How To
Discover Medshop Australia’s comprehensive how to guides and learn more about a broad range of healthcare and medical industry topics. From using a ventilator and defibrillator to finding your nearest AED in an emergency, we have all the information you need. Subscribe to the blog or contact us today for more information.
October 15, 2024
Carolyn Cumper
Gloves and Masks — Who Should Wear Them and Why
Over the past few months, as the coronavirus crisis has unfolded around the globe, one usually uncontentious element of viral protection has become highly controversial. The subject of personal protective equipment (PPE), in particular masks, gloves, gowns, and face shields in healthcare settings, is now hotly debated by health authorities, hospitals, medical professionals, and politicians alike. No one seems able to come to a definitive conclusion on who should wear them and for which reasons. Today, depending on your particular location, you might be mandated by law to wear masks whenever you leave the house. On the other hand, in certain places, you might be advised not to purchase PPE in order to ensure healthcare facilities do not run short of stock. People are confused, and with good reason. So, who should wear PPE? And what is the current guidance for Australia? Here, we take a look at the subject of personal protective equipment in healthcare and why there is so much confusion on when and where it should be used. Who Should Wear Masks? There are a number of issues surrounding the subject of protective masks, and to make matters more complicated, two of the most recognisable global health bodies, the WHO and the CDC, disagree. The WHO currently states that: “If you are healthy, you only need to wear a mask if you are taking care of a person with COVID-19.” and that you should “wear a mask if you are coughing or sneezing.” However, the CDC has recently revised its guidance on mask wearing, now suggesting: “…wearing cloth face coverings in public settings where other social distancing measures are difficult to maintain (e.g., grocery stores and pharmacies), especially in areas of significant community-based transmission.” Among the reasons for the conflicting advice, from both these two bodies and various other outlets, is the types of mask used and their efficacy. The use of N95 respirators is now widely recommended for healthcare workers in high-risk environments, with proper fit testing and fit checking required to ensure a tight seal, as these masks are proven to protect against airborne particles. Fit tests should be performed yearly or when facial features change. Additionally, when it comes to more advanced masks such as N95 respirators used in healthcare, not only are fit tests required to ensure a proper seal is formed, but supply/demand issues mean that this type of mask should be reserved for healthcare professionals. The use of PPE such as safety face shields may be seen in supermarkets and other customer-facing environments, such as pharmacies, but again, these should be reserved for frontline and healthcare workers. Currently, there is no official guidance from the Australian government on wearing masks in public, however, this doesn’t rule out a u-turn in the coming weeks, with many other countries changing their advice as the crisis grows. If you want to err on the side of caution, then you can make a perfectly serviceable mask at home, or purchase one here. Who Should Wear Gloves? When it comes to protective gloves, the advice is a little clearer. Gloves do not, and never should, replace comprehensive hand hygiene. In fact, in most cases, washing your hands regularly and thoroughly is preferable to wearing any kind of sanitary glove, since wearing them may lead to people becoming less prudent with hand hygiene. In hospitals and healthcare environments, gloves are used for specific purposes and then disposed of immediately. The potential for the misuse of gloves by the general public, is one of the reasons that they are unlikely to be mandatory, and over reliance on this type of PPE can lead to shortages elsewhere. Exceptions include those in food preparation, or for anyone who has any kind of open wound. Again, there is no advice from the Australian government on glove wearing outside of the healthcare sector, and stockpiling gloves could have a knock-on effect on the healthcare sector’s ability to effectively equip those most at risk. The bottom line is, unless you are obligated to wear masks and gloves by law or according to health & safety advice, then its probably better not to. However, for more information on whether this advice changes in Australia, stay tuned to the Medshop blog. Author: Carolyn Cumper's career spans from being a Patrol Officer in Rhodesia to a Paediatric Nurse in the UK, and later a Deputy Hospice Manager in Australia. Her diverse journey includes roles in law enforcement, healthcare, and business, culminating in her significant contributions to Medshop.
August 20, 2024
Steven Cumper
What is Doppler Ultrasonography? A Guide
Doppler ultrasonography is a type of ultrasound imaging that healthcare professionals use to get a closer look at your blood flow. As a businessman with a strong foundation in biomedical science and osteopathic medicine, I've seen first-hand how essential this technology has become across multiple healthcare settings. Non-invasive, painless, and completely safe, Doppler ultrasonography produces results almost instantly, helping healthcare professionals diagnose and monitor a range of conditions related to the direction of blood flow and blood pressure. Ultrasonography has been widely used by doctors since the 1960s to assess a range of conditions and diseases. The technique uses high-frequency sound waves to create a picture of internal body structures like tendons, muscles, and organs. It’s also commonly used in pregnancy to assess the condition of the baby and spot any abnormalities. Doppler technology has continued to evolve, and now there are specialized devices that cater to specific clinical needs. At Medshop, we provide an extensive selection of advanced Dopplers that enhance diagnostic capabilities for practitioners. Normal types of ultrasound imaging, although incredibly useful in the diagnostic process, don’t show blood flow. If doctors want to assess the condition of blood vessels, and the rate of blood flow in the body, they need to use Doppler ultrasonography, especially to assess the direction of blood flow and identify potential blockage in the blood vessels. A Doppler ultrasound test can be used by healthcare professionals to identify a number of conditions and to aid diagnoses. Incredibly useful, this quick, non-invasive technique can save lives and help doctors to provide top-level care. The advancements in handheld Doppler devices have empowered many general practitioners and specialists alike to make on-the-spot assessments that can be critical for patient outcomes. What is the Difference Between a Doppler and an Ultrasound? A Doppler is a type of ultrasound imaging that’s used to measure or assess the flow of blood in the body. Doppler ultrasonography uses high-frequency sound waves to build a picture of how blood cells are moving in a patient’s vessels. The technique can be used to measure the speed and direction of blood flow in the body and is a valuable technique for diagnosing and monitoring a range of diseases and conditions, such as blockage or arterial occlusion. At Medshop, we offer a variety of Doppler devices, such as the Huntleigh FD1+ Fetal Doppler, which provides clear and reliable readings to assist in both prenatal care and general vascular assessments. These devices are designed to be easy to use, portable, and accurate, which makes them a staple in many healthcare professionals' toolkits. Doppler ultrasound tests are carried out using small, handheld devices called transducers. These are simply placed against the patient’s skin and then adjusted until the person carrying out the scan gets a satisfactory reading. The patient shouldn’t experience any pain or discomfort during a Doppler ultrasound test. What is the Doppler in an Ultrasound? The ‘Doppler’ in a Doppler ultrasound test refers to the Doppler Effect, or Doppler shift. This was first identified in the mid-19th century by Austrian physicist Christian Doppler. It describes the increase or decrease in the frequency of sound, light, or other waves as the source of the waves and the observer move towards or away from each other. A Doppler ultrasound test bounces sound waves off of the blood cells circulating in a patient’s body. This allows the doctor or sonographer carrying out the test to build up a detailed and informative picture of the patient’s vessels. This core technology is the basis for many of the Doppler devices available today, including the popular Edan SD3 Vascular Doppler, which provides a cost-effective yet highly reliable solution for clinics. What is Doppler Flow? Doppler flow is a type of Doppler imaging. Like other types of Doppler imaging, it uses high-frequency sound waves to measure the flow of blood through a vessel. Waveforms of the blood flow are shown on the ultrasound imaging screen, allowing the professional carrying out the scan to assess the patient’s circulation. Color Doppler, a more advanced form of Doppler imaging, provides color-coded visuals that show the speed and direction of blood flow in real time. Doppler flow studies are often used to assess the blood flow in a baby’s umbilical vein and arteries. It can also be used to check the foetal brain, foetal heart, and other internal organs. Doppler flow is sometimes called Doppler velocimetry. What is A Doppler Ultrasound Used For? Doppler ultrasound tests are commonly used to assess patients suffering from symptoms that indicate there is an issue with the circulatory system. For example, if a doctor believes a patient is experiencing reduced blood flow, blockage, or heart disease, they may use a Doppler to get more information about the patient’s blood vessels and flow. Doppler imaging allows doctors to make quick and accurate assessments and help them to decide if further treatment is needed. Whether you're dealing with vascular complications or prenatal monitoring, devices like the Edan SD5 and the Summit LifeDop 150 from Medshop are perfect examples of how modern Doppler technology is improving diagnostic capabilities. Symptoms that may result in a Doppler ultrasound test include: Numbness or weakness in the legs Painful cramping in the hips or leg muscles when walking or climbing stairs Cold feeling in the lower leg or foot Change in colour and/or shiny skin on your leg Shortness of breath Swelling in the legs, feet, and/or abdomen Fatigue Patients may also require a Doppler if: They’ve had a stroke - Transcranial Dopplers can be used to check blood flow to the brain They have injured their blood vessels They are being treated for a known blood flow disorder If they are pregnant and their doctor believes there may be a blood flow problem with mother or baby. What Can a Doppler Ultrasound Detect? A Doppler ultrasound can be used to detect and diagnose a range of conditions and diseases related to the circulatory system. These include: A blocked artery (arterial occlusion) Decreased blood circulation into the legs (peripheral artery disease) Bulging arteries (aneurysms) Narrowing of an artery (carotid artery stenosis) Deep vein thrombosis (DVT) Blood clots Poorly functioning valves in leg veins. These can cause blood and other fluids to pool in the legs (venous insufficiency) Heart valve defects and congenital heart disease How to Perform a Doppler Ultrasound Sonographers and most doctors will learn how to do a Doppler ultrasound test as part of their training. Some specialist nurses will also be taught how to use Doppler imaging and read the results. From my experience, having access to quality Doppler devices during training and clinical practice is crucial. This is why Medshop’s extensive range caters to both new learners and experienced professionals. The process is simple and usually involves applying gel to the patient’s skin to ensure the best transmission of sound waves. The handheld transducer is then applied to the affected area, and the sonographer moves it around to capture the correct readings. How to Read a Doppler Ultrasound The way a Doppler is read will depend on the exam being carried out. For example, a lot of foetal Dopplers are mostly used to check the baby’s heartbeat. In this instance, a simple heart rate reading will probably be sufficient to give the doctor or sonographer the information they need. If the doctor or sonographer is checking for an aneurysm, DVT or another circulatory condition, they may use another type of Doppler. Common types of Doppler ultrasonography include: Colour Doppler - This uses a computer to change sound waves into different colours which show the speed and direction of blood flow in real time. Power Doppler – This is a type of colour Doppler that can provide more detail about blood flow than a standard colour Doppler. However, it can’t show the direction of blood flow. Spectral Doppler – This type of Doppler shows blood flow data on a graph, rather than colour images. It’s often used to see how much of a blood vessel is blocked. Continuous wave Doppler – When this type of Doppler is carried out, sound waves are sent and received continuously. This provides a more accurate measurement of blood when it is flowing quickly. How to Interpret a Doppler Ultrasound Again, the way a Doppler is interpreted will depend on what the doctor is looking for and which type of Doppler has been carried out. If your readings fall outside normal parameters, your doctor will talk you through the results and what they mean for your diagnosis. How to do a Doppler Ultrasound in Pregnancy Because they are small, easy to use, and accurate, Dopplers are commonly used to check a baby’s heart rate during pregnancy. In many cases, family doctors will learn how to read a Doppler ultrasound test in pregnancy to allow them to monitor mother and baby without the need for a hospital visit. From my experience, devices like the Huntleigh FD3 provide essential insight for practitioners caring for expecting mothers, and are trusted in both clinical and home settings. When a Doppler ultrasound test is carried out in pregnancy, gel will be placed on the mother’s belly and a specially designed foetal doppler applied to the skin. The doctor or sonographer will then move the transducer around until they get a clear reading of the baby’s heartbeat. This process should be painless and non-invasive. Doppler ultrasonography is an incredible medical tool that provides valuable information on a range of conditions. Learn more about Doppler ultrasonography, and about the Dopplers in our collection of high-quality medical devices by exploring the Medshop store today or contacting one of our advisors. Author: Steven John Cumper, B.App.SC. (Osteo.), M.Ost., is a businessman with a strong foundation in biomedical science and osteopathic medicine, who founded and led Medshop to international success, culminating in its acquisition by the Bunzl Group in September 2021, where he continues to serve as Managing Director (Medshop Group).
August 09, 2024
Steven Cumper
CPR vs. AED — What Sets Them Apart
This information is not intended to be a substitute for professional medical advice.To understand the latest medical guidance on using CPR or an AED please consult Australian Resuscitation Council or the American Heart Association. In a medical emergency, every second counts. Whether it's a sudden cardiac arrest or a critical respiratory event, having the knowledge and skills to respond effectively can meanthe difference between life and death. Two crucial tools in such situations are Cardio-Pulmonary Resuscitation (CPR) and the use of an Automated External Defibrillator (AED). Understanding when to administer CPR versus employing an AED is important knowledge that can save lives—whatever your background. Both techniques are designed to support a failing heart, but they serve distinct roles when caring for a patient. This article explains the critical differences between CPR and AED, delving into when to employ each technique and how they can work together to save lives. Read on to learn more. The Importance of Immediate Response in Cardiac Emergencies Cardiac emergencies, such as heart attacks and sudden cardiac arrest, are critical and time-sensitive situations that require immediate and effective response. The importance of immediate action cannot be overstated, as it can significantly impact the outcome and increase the chances of saving a person's life. When the heart's blood supply is compromised, either due to a blockage in the arteries (heart attack) or a sudden malfunction of the heart's electrical system (cardiac arrest), every passing moment can lead to irreversible damage to the heart muscle and vital organs. Immediate response can help minimise the extent of damage and increase a person's chances of survival. What Is CPR? Cardiopulmonary resuscitation (CPR) is a life-saving technique performed by first responders in emergencies when a person's heartbeat or breathing has stopped. CPR aims to manually circulate blood and oxygen throughout the body to maintain essential organ function until professional medical help arrives. CPR is a critical intervention during cardiac arrests, drowning incidents, suffocation, and other situations where the normal circulation of blood is disrupted. How Does It Work Check Responsiveness: Gently shake the person and shout to check if they are responsive. If there is no response, it indicates an emergency. Call for Help: Dial emergency services or ask someone nearby to do so. Open the Airway: Tilt the person's head back slightly and lift the chin to open the airway. Check for Breathing: Look, listen, and feel for normal breathing. If the person is not breathing or is breathing abnormally, CPR should be initiated. Chest Compressions: Place the heel of one hand on the centre of the person's chest, just below the nipple line. Place the other hand on top and interlock the fingers. Deliver chest compressions by pushing hard and fast at a rate of about 100-120 compressions per minute. Allow the chest to fully recoil between compressions. Rescue Breaths: After 30 compressions, give two rescue breaths. Pinch the person's nose shut, cover their mouth with yours, and give breaths until the chest rises. Continue Compressions and Breaths: Alternate between 30 compressions and 2 rescue breaths until the person starts breathing on their own, emergency personnel arrive, or you are too exhausted to continue. CPR helps maintain blood circulation, delivering oxygen to the brain and other vital organs. It can buy valuable time until more advanced medical interventions, such as defibrillation, can be administered. Automated external defibrillators (AEDs) are often used in conjunction with CPR to restore the heart's normal rhythm. When to Use CPR — Situations and Indications Cardiopulmonary resuscitation (CPR) is a critical technique used to revive a person whose heart has stopped beating or is beating irregularly, and who is not breathing or not breathing normally. Knowing when to use CPR is essential for providing timely and effective assistance in life-threatening situations. Here are some key situations and indications for performing CPR: Cardiac Arrest — CPR is most commonly used during cardiac arrest. Cardiac arrest occurs when the heart suddenly stops pumping blood effectively. This can result from various causes, such as a heart attack, arrhythmias, drowning, electrocution, or severe trauma. If a person is unresponsive, not breathing, and has no pulse, CPR should be initiated immediately. Unresponsiveness — If an individual is unresponsive and not breathing normally, CPR should be started. Gently tap the person and shout loudly to check for responsiveness. If there is no response, begin CPR. No Normal Breathing — If a person is not breathing or is only gasping, CPR should be initiated. Gasping is not considered normal breathing and requires immediate action. Choking — If a person becomes unresponsive due to choking and is not breathing, CPR should be started after attempting to clear the airway with back blows and abdominal thrusts (Heimlich manoeuvre). If the person regains responsiveness, CPR is not needed. Drowning — Individuals who have experienced near-drowning incidents and are unresponsive with no normal breathing require CPR to restore breathing and circulation. Drug Overdose or Poisoning — In cases of severe drug overdose or poisoning leading to unconsciousness and no normal breathing, CPR is necessary to maintain blood flow and oxygen delivery. Sudden Collapse — If a person collapses suddenly and is unresponsive, CPR should be started to provide immediate life support while awaiting medical help. Unknown Cause of Unresponsiveness — If the cause of unresponsiveness is unknown and the person is not breathing or not breathing normally, CPR should be initiated to address potential cardiac arrest. It's important to note that CPR is not typically performed in situations where the person has a pulse and is breathing normally, even if they are unconscious. In such cases, placing the person in the recovery position and monitoring them until medical help arrives may be appropriate. Remember, early initiation of CPR significantly improves survival rates and reduces the risk of brain damage. If you are unsure whether CPR is needed, it's safer to begin chest compressions until professional medical assistance arrives. Proper CPR technique and training are crucial to ensure the best possible outcomes in these critical situations. What is an AED? The acronym AED stands for Automated External Defibrillator, and they are placed in public places, often as part of a broader first aid kit, to provide emergency care in the event of cardiac arrest. Defibrillator AEDs, like the ones produced by Laerdal, Zoll, and HeartSine allow untrained people to administer ventricular fibrillation (VF) to a human body that has suffered a cardiovascular event such as a heart attack. The AED has changed the fate of cardiac arrest victims forever. Before their introduction, without medical attention, standard CPR was the only chance someone had of surviving a cardiac event. Today, in cities where CPR is widely practised and AEDs are readily available, success rates range from 25 to better than 60 percent. The high end of the data comes from cases where the AED came into play. In the absence of CPR training and AEDs, success rates drop closer to 10 percent. It’s the AED units that improve these data the most. Unlike the hospital defibrillation machines, which predated AEDs and required specific training, these new consumer-friendly defibrillators are accessible to even the untrained. As stated by Defib First Australia, “Modern AEDs cannot be used inappropriately and it is not possible to do any further harm to a cardiac arrest victim who is, in effect, dead and will remain so unless defibrillated.” As far as the value of the AED on cardiac patients, the same site said it best: “An AED is the most vital piece of emergency first aid equipment and the only effective first aid treatment for cardiac arrest.” You can learn more about how to use an AED defibrillator here. Check HeartStart AED with FREE carry case* When should an AED be used? In short, whenever someone’s heart has stopped beating, that’s the best time to use the AED pads. When a heart stops beating, time is of the essence, because after six minutes of oxygen depletion, the brain begins to die. Damage can and will likely occur long before that point. That means you have minutes to get the oxygen moving through the body again. In the heat of such a moment, even though time seems to slow down, minutes slip away quickly. The good news about today’s AEDs is that they will not deliver a shock to a body with a beating heart. As such, there is no bad time to grab the AED if someone has fallen down. For this reason, most response training advises you to delegate retrieval of the nearest AED in the first moments of the incident. Key Differences Between CPR And AED Cardiopulmonary Resuscitation (CPR) and Automated External Defibrillator (AED) are both crucial components of cardiac arrest response, but they serve different roles in the effort to save a person's life. Here are the key differences between CPR and AED: CPR (Cardiopulmonary Resuscitation) Manual chest compressions and rescue breaths. Maintains minimal blood flow until normal heart activity is restored. Trained individuals perform CPR. Requires training for proper technique. No specialised equipment needed. AED (Automated External Defibrillator) Delivers electric shock to restore normal heart rhythm. Resets the heart's electrical activity during specific arrhythmias. Designed for use by laypeople. Minimal to no AED training required due to voice prompts. Specialised device that analyses and corrects heart rhythm. Combined Use CPR and AED are used together to maximise survival chances. CPR starts blood circulation, AED assesses and corrects heart rhythm. The Role of CPR and AED In Cardiac Arrest Response In a cardiac arrest emergency, CPR and AED work together to improve the chances of survival: CPR (First Step) Provides manual chest compressions and rescue breaths. Circulates oxygenated blood to vital organs. Buys time until professional medical help arrives. AED (Second Step) Analyzes the heart's rhythm. Delivers an electric shock if needed. Aims to restore a normal heart rhythm. The combination of immediate CPR followed by AED use is crucial for an effective cardiac arrest response, with each step enhancing the patient's chances of recovery. Common Misconceptions and Myths About CPR And AED There are several misconceptions and myths surrounding CPR and AED: Myth — Only medical professionals can perform CPR. Fact — Bystanders and laypeople can effectively perform CPR and should do so in emergencies. Myth — AEDs can cause harm. Fact — AEDs are designed to be safe and will only deliver a shock if a shockable rhythm is detected. Myth — AEDs can restart a stopped heart. Fact — AEDs aim to restore a normal rhythm in a heart that is still beating abnormally; they don't "restart" a stopped heart. Myth — CPR can restart the heart. Fact — CPR can help maintain blood flow and oxygenation but may not restart the heart. AED use is often necessary for rhythm correction. Myth — Only older adults need CPR and AED. Fact — Cardiac arrest can happen to people of all ages, including children and young adults. Myth — You need to be certified to use an AED. Fact — While training is helpful, AEDs are designed for use by anyone, even without formal certification. Myth — You should stop CPR when using an AED. Fact — Continue CPR until the AED is ready to analyse or deliver a shock. The AED will prompt you when to pause. FAQs — Clearing Doubts About CPR And AED Do you use an AED on someone with a pacemaker? The simple answer is yes, but there are a few caveats to AEDs used with pacemakers. Know that pacemakers of any sort should withstand external defibrillation without a problem. The problem with the pacemaker placement is that it usually coincides with the placement of one defibrillator pad. As such, you’ll have to get as close as possible to the correct location. Some AED units may assist with placement. Others may reject the placement. You may need to place the pad directly on the pacemaker, but try to avoid this. In any case, remember that any effort you make is better than none. This person only stands to improve their situation as they are essentially terminal without a heartbeat. Once the pads are in place, run the AED as normal and keep your hands off. After a successful resuscitation, their pacemaker may require attention from a professional, but that’s not a reason to avoid AED administration. Can you use an AED on an infant? If you find yourself in this spot, know that there are special pads and accompanying instructions with most AED units for delivering a shock to a child. The cutoff age is eight. Any human under eight years old will need specially sized defibrillation pads. You should NEVER use the adult pads on a child under the age of eight, even if you have no other options. The risk is not only to the child but to those in the near vicinity. Again, check with your accredited CPR/AED organisation for more details on that. When not to use an AED? Automated External Defibrillators (AEDs) are life-saving devices, but there are specific situations when their use should be avoided. Firstly, AEDs should not be used when the victim is breathing normally or has a detectable pulse. These devices are designed for cases of sudden cardiac arrest where the victim is unresponsive, not breathing, and lacks a pulse. Additionally, AEDs should not be used in environments with moisture or water present, as this can compromise their effectiveness. Moving the victim to a dry area or ensuring their chest is dry before attaching the AED pads is crucial. If the victim's chest is obstructed by medicinal patches or excessive hair, it's essential to clear the area quickly by wiping or shaving before applying the AED pads. Using an AED in areas with explosive or flammable materials is highly dangerous, as the electrical shock delivered by the device could potentially ignite a fire or cause an explosion. In cases of severe hypothermia where the victim's body temperature is extremely low, it's important to prioritize warming the victim before attempting defibrillation, as their heart's response to the shock can be significantly affected. Lastly, if there is a valid, visible Do Not Resuscitate (DNR) order for the victim, it indicates their explicit wish not to be resuscitated. In such cases, using an AED would be inappropriate. In summary, while AEDs are valuable tools for cardiac arrest situations, careful assessment of the circumstances and the victim's condition is essential to their appropriate use. Why is defibrillation important in CPR? Defibrillation is crucial in emergencies involving cardiac arrest for several reasons. Firstly, it delivers an electrical shock to the heart, momentarily stopping all electrical activity. This pause allows the heart's natural pacemaker to reset, potentially restoring a normal rhythm In addition, defibrillation complements CPR efforts. While CPR maintains minimal blood flow to vital organs, it cannot correct an irregular heart rhythm. Defibrillation steps in to potentially restore a normal rhythm, maximally boosting the odds of successful resuscitation. Certain abnormal heart rhythms, specifically ventricular fibrillation (VF) or pulseless ventricular tachycardia (VT), respond well to defibrillation. These are categorised as "shockable" rhythms, and without swift intervention, they often lead to fatal outcomes. Finally, Automated External Defibrillators (AEDs) are designed to be portable and user-friendly. They offer clear voice and visual prompts, making them accessible in various settings, from homes to public spaces. They can be operated by individuals with minimal training, extending their potential life-saving reach. Can You Perform CPR While Using an AED? Yes, you can and should perform CPR while preparing to use an AED. When responding to a cardiac arrest, it's essential to start CPR immediately to maintain blood circulation to the vital organs. Once the AED arrives, continue CPR while the AED is being set up and the pads are being applied. However, when the AED is ready to analyze the heart's rhythm or deliver a shock, you must briefly stop CPR and ensure no one is touching the patient. After the shock is delivered (if needed), immediately resume CPR until the AED instructs you otherwise or professional medical help arrives. This combination of CPR and AED use is critical for increasing the chances of survival. How does CPR compare to Basic Life Support (BLS)? In short, CPR and BLS are similar as they share the same goal—to keep the airway open, the heart beating, and the circulation of oxygen to the body going without the use of advanced life support. However, understanding the difference between the two will allow you to know when to use CPR and when to use BLS. A BLS certification is a little more advanced, not so much as an Advanced Life Support (ALS) certification, but more than a standard CPR certification. That said, in practice, there is little daylight between these two. Some BLS certifications teach advanced methods like the administration of oxygen, team approaches, and in-hospital procedures, but the two certifications are close neighbours. In the case of someone seeking a certification for employment, it’s best to check with the employer if they consider the certifications as equivalent qualifiers. To someone suffering a catastrophic cardiovascular event, it will make little difference whether their attendant is CPR or BLS certified. Both are better than doing nothing when an AED is not available. Author: Steven John Cumper, B.App.SC. (Osteo.), M.Ost., is a businessman with a strong foundation in biomedical science and osteopathic medicine, who founded and led Medshop to international success, culminating in its acquisition by the Bunzl Group in September 2021, where he continues to serve as Managing Director (Medshop Group).
August 09, 2024
Steven Cumper
What is a Defibrillator? How AEDs Work and How to Use Them
Everyone knows what a defibrillator is. They’re a mainstay of Hollywood drama and a paramedic’s most recognisable tool. Here we look at how they work and when to use one.
July 22, 2024
Steven Cumper
Choosing the Best Sphygmomanometer for Everyday Use
Monitoring blood pressure is crucial for maintaining overall health and preventing serious conditions such as heart disease, stroke, and kidney failure. Regular monitoring allows individuals to detect hypertension early, manage existing conditions more effectively, and make informed decisions about their health. By keeping track of blood pressure readings, one can identify patterns and triggers, and work with healthcare providers to tailor treatment plans accordingly. The purpose of this guide is to help readers choose the best sphygmomanometer for everyday use. With so many options available on the market, it can be challenging to determine which device meets your specific needs in terms of accuracy, ease of use, and reliability. This guide will provide detailed information on various options of sphygmomanometers, key features to look for, and top recommendations based on personal experience and expert reviews. What is a Sphygmomanometer? A sphygmomanometer is a medical device used to measure blood pressure. It consists of an inflatable cuff, a measuring unit (either a mercury column, aneroid gauge, or digital display), and sometimes a stethoscope for manual types. There are several types of sphygmomanometers: Manual Sphygmomanometers: These include mercury and aneroid sphygmomanometers. They require the user to inflate the cuff manually and listen to blood flow sounds using a stethoscope. They are known for their accuracy but require training to use correctly. Digital Sphygmomanometers: These devices automatically inflate the cuff and display readings on a digital screen. They are user-friendly and ideal for home use, though their accuracy can vary based on the model. Wrist Sphygmomanometers: These are compact and convenient, wrapping around the wrist instead of the upper arm. They are easy to use but can be less accurate due to the sensitivity of wrist arteries to position and movement. The Best Sphygmomanometer for Nurses When it comes to choosing the best sphygmomanometer for nurses, there’s a few avenues you can take, and your choice will very much depend on the most common applications. There’s the traditional route or the more innovative route. Additionally, there’s your patients to consider, and there’s rarely a one sphygmomanometer fit all approach. Here then, we look at three types of sphygmomanometer that can be useful to you. Standard Aneroid Sphygmomanometer Standard aneroid sphygmomanometers, such as this one, are instantly recognizable and somewhat iconic. They offer great value for money and include everything you need in a handy carry case. This includes gauge, cuff, and the classic bulb pump. They are easy to use and maintain thanks to their simple design, and they can be quickly recalibrated after extended use. Standard aneroid sphygmomanometers are a great choice for student nurses, since they offer reliability and accuracy without breaking the bank. They also offer intuitive operation and, when referring to your study materials, it is likely that this type of sphygmomanometer will be referenced. Palm Style Aneroid Sphygmomanometer Palm style sphygmomanometers, like this, are a relatively new design that improves on the traditional bulb pump mechanism. These sphygmomanometers offer tactile pumping for both left and right handers using soft touch casing and a low-profile pump. They also include features such as improved air release valves and no pins stop. This type of sphygmomanometer is great for nurses who must take the blood pressure of lots of patients in a short space of time, reducing hand fatigue and improving comfort. Infant and Paediatric Sphygmomanometer For nurses who regularly work with children, a specialist infant and paediatric sphygmomanometer is the best choice. This type of equipment offers the same kind of functionality as other sphygmomanometers; however, they are presented in a range of colourful and playful finishes that can help to distract anxious children. For nurses studying or entering paediatric wards, this type of sphygmomanometer is a vital addition to your existing tools and equipment, allowing you to easily take the blood pressure of infants and children. Best Sphygmomanometer Brands When it comes to finding the best sphygmomanometer brands, there are two names that stand out. Here, we take a look at Welch Allyn and Prestige to see what they have to offer when it comes to high-quality sphygmomanometers Welch Allyn Welch Allyn is a highly respected name in the world of medical equipment, and it is no surprise that their sphygmomanometers are among the best around. The Welch Allyn DS66, for example, maintains highly accurate readings while improving durability through its DuraShock technology. This major innovation removes the need for gears within the equipment, ensuring that regular calibration is a thing of the past. They are lightweight, include comfort grips, and offer other practical features such as latex free materials and one-finger deflation triggers. They are also certified to an accuracy of +/- 3mmHg, ensuring the DS66 is the best sphygmomanometer for nurses who require the highest quality professional tools. Additionally, a broad range of accessories and spares, such as these reusable blood pressure cuffs, ensure your Welch Allyn sphygmomanometer is always up to the task—however often it is used and in whatever conditions. Prestige Prestige aneroid sphygmomanometers, while sitting at the budget end of the market, still offer superb functionality and usability. Ideal for student nurses looking for the best entry level sphygmomanometer to use during their studies, they provide great value for money without compromising on accuracy or reliability. Spare cuffs suitable for children, adults, and large adults are included within the specially designed carry case, while latex-free design improves comfort and safety. Available in a range of colours, Prestige also offer sphygmomanometers designed with eye-catching patterns made specifically for children. Finally, with a lifetime calibration warranty on Prestige products, you can rest assured that your sphygmomanometer will outlast your studies and serve you for many years to come. Author: Steven John Cumper, B.App.SC. (Osteo.), M.Ost., is a businessman with a strong foundation in biomedical science and osteopathic medicine, who founded and led Medshop to international success, culminating in its acquisition by the Bunzl Group in September 2021, where he continues to serve as Managing Director (Medshop Group).
July 22, 2024
Steven Cumper
What to Do if You Break a Mercury Thermometer
The evolution of the thermometer begins with the Greeks, with Hero of Alexandria recognising that certain substances expand and contract dependant on temperature. At that time, it was simply a water/air interface that was more of a scientific curiosity than a piece of practical equipment. It took another 1600 years for the first device that we might recognise to be invented, however this type of thermometer designed by Giuseppe Biancani in 1617, was actually called a thermoscope. Fast-forward another century and Dutch inventor and scientist Daniel Gabriel Fahrenheit introduces the world to the first reliable thermometer. This was the first type of thermometer to use mercury instead of water/alcohol mixtures, and it was this design that would remain in use until after the Second World War. Today, that iconic mercury-based design has all but been replaced by other types of thermometer, however, while digital now rules, in Australia, they are more prevalent than in most other western countries. Australia does not allow the sale and use of mercury thermometers for medical purposes. The Australian Therapeutic Goods Administration (TGA) has issued guidance aligned with the Minamata Convention on Mercury, which aims to phase out mercury-containing medical devices, including thermometers, due to their potential health risks and environmental impact. This initiative, supported by WHO and other global health organizations, seeks to eliminate the use of mercury in medical devices by promoting safer and more environmentally friendly alternatives, such as digital thermometers. Today, in many cases, alternative types of thermometer are used either alongside mercury-based devices or as replacements. Here, we take a look at the different types of thermometer used today and what to do if your toxic mercury thermometer breaks. Types of Thermometer Available Today Digital Thermometers – Digital thermometers are among the fastest and most accurate. Readings can be taken from under the tongue, the rectum, or the armpit in the same way as a traditional thermometer. Ear Thermometers – Otherwise known as tympanic thermometers, this type of thermometer uses infrared light to make temperature reading. Non-contact Thermometers – Non-contact thermometers also work with infrared to provide readings without contacting the body. They are probably the least accurate but can be useful for children. Glass Thermometers – Traditional glass thermometers using mercury or alcohol for readings are still used by individuals who already possess these thermometers. Mercury thermometers are heavily regulated and generally phased out for medical use due to their significant health and environmental risks. Alcohol thermometers, on the other hand, are considered safer and are still permitted. They are widely used as alternatives to mercury thermometers in various settings, including homes, schools, and laboratories, because they pose less risk and are environmentally friendly. Alcohol thermometers are mostly used for non-medical purposes. Using a Mercury Thermometer? Here’s What to do if it Breaks The first thing to remember if you break a mercury thermometer is that the silvery substance contained within those glass tubes has the potential to be highly toxic. Of course, identifying whether it is really mercury in your thermometer is an important step, however, it is always better to be safe than sorry. To help you identify whether the type of thermometer you are using is, in fact, mercury-based, ask yourself: Is the liquid silver? If it is not, then it is most likely to be an alcohol-based thermometer. If it is, then it may be either a mercury or a non-mercury thermometer. Does the thermometer contain any warnings? Sometimes, the paper calibration strip inside the thermometer will tell you which substance has been used. If there is no writing or warning, assume that it is mercury. Cleaning up Mercury Spills If your mercury thermometer breaks, then you can also identify whether the substance contained is mercury by observing its behaviour. Mercury is a liquid metal that has properties quite unique from other substances. Smaller droplets will pool together into a large sphere shape, which will break again into smaller droplets when pressure is applied. However, never touch mercury and take care not to scatter smaller droplets into hard-to-reach areas. When cleaning up after a mercury spill, you should be careful to NEVER do the following: • NEVER use a vacuum cleaner. This will disperse the mercury into the air • NEVER use a broom. This will break the mercury into smaller droplets and disperse them. • NEVER pour mercury down the drain. This can either damage plumbing, septic tanks, or sewage treatment plants while polluting at the same time. • NEVER walk around with mercury on your shoes of clothing. Additionally, you should prep the area where the mercury has been spilled by doing the following: • Ask people to leave the area ensuring no one walks through the mercury as they do so. Remove any pets from the area. Open all windows and doors to the outside and close doors to other parts of the building. • For absorbent surfaces, the contaminated items must be disposed of according to the guidelines below • For non-absorbent surfaces, clean-up is easier • Do not allow children or elderly people to help you clean up Instructions on How to Clean up Mercury Spills Put on rubber or nitrile gloves. Cover the affected areas with powdered sulphur, this will make the mercury easier to see and suppress any vapours. Pick up any broken glass or other debris, fold within a paper towel and place in a labelled, Ziplock bag. Use a piece of cardboard or plastic to gather mercury beads. Use slow sweeping motions. Darken the room and hold a torch at the low angle to check for any other mercury. Inspect the entire room. Use an eyedropper to draw up the mercury. Dispense onto a damp paper towel. Place the paper towel in a labelled, Ziplock bag. Place all items, including gloves, into a trash bag. Label the bag as hazardous and containing mercury. Author: Steven John Cumper, B.App.SC. (Osteo.), M.Ost., is a businessman with a strong foundation in biomedical science and osteopathic medicine, who founded and led Medshop to international success, culminating in its acquisition by the Bunzl Group in September 2021, where he continues to serve as Managing Director (Medshop Group).
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