Health professionals are confronted with problems on how best to resolve medical emergencies that face their clients. The response accorded to a patient at the time of need directly affects the chances of survival. In this regard, the health professional require relevant and sophisticated interventions in order to assist amicably in medical emergencies…
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Per the European Union legal framework, a medical device is an apparatus that is used in diagnosis, prevention, or treatment of diseased conditions where its mode of action is not through chemical action in a patient’s body. Medical devices consist of enormous variations with regard to their sophistication and scope of use, which ranges from tongue depressors to medical robots and cardiac pacemakers. Biomedical engineering involves fundamental aspects of the device production including designing, system analysis, and practical application. This is in line with ensuring that quality and reliable devices. This paper seeks to highlight defibrillators as medical devices with regard to their history, scope of application and safety aspects of the device in terms of human factors engineering. It is estimated that about 30,000 people in the United Kingdom experience cardiac arrest away from the hospital annually and they are assisted by medical emergency response units (Resuscitation Council, 2010). Such assistance is facilitated by the availability of portable medical devices, which prove essential in the delivery of the critically required services. Among the crucial devices required in relieving the effects of cardiac arrest is the defibrillator. Defibrillators are apparatus, external or implanted, that deliver an electric shock to the heart via the chest cavity in order to restore normal heart rhythms. Defibrillators function by delivering a joust of electric current to the heart in order to polarise the muscles and nerve cells, allowing them resume a normal rhythm (Street, 2012). Implanted Cardioverter Defibrillator (ICD) constantly monitors the heartbeat rate as well as its rhythm to detect abnormal and life threatening rhythms, which on detection an electric shock is sent to the heart to restore a normal rhythm (Defibrillation, n.d). The device also works as a pacemaker to curb the effects of the electric shock, which slows down the rate of the heartbeat. The above is illustrative of a monitoring and feedback mechanism, where the defibrillators function based on signals taken from the patient after its analysis. Among the external defibrillator units are automated external defibrillators (AED), which automate the patient’s heartbeat rhythms for monitoring as electric shock is administered to normalise the rhythm. AEDs consist of in-built computer systems that examine the patient’s heartbeat in order to assess the need to administer defibrillation (Sciammarella, n.d.). One of the common causes of cardiac arrest is ventricular fibrillation, which is characterised by chaotic, unorganised electrical malfunction of the heart resulting in a less effective heartbeat (Khandpur, 2003). This chaotic electrical activity can be stopped and its effects reversed by the application of an electrical counter shock where heart assumes a normal and organised rhythm. Disorders in the generation of a normal pulse by the heart results irregular heartbeats manifested in arrhythmias. Abnormal automaticity and triggered activity are characteristic of conduction abnormalities that trigger ventricular tachycardia. In addition to the use of medication and surgical procedures in the management of arrhythmias, defibrillation comes in handy in resolution of ventricular tachyarrhythmia and atrial fibrillation. This is especially so for medical emergencies that occurs away from healthcare facilities.
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(“Defibrillators Essay Example | Topics and Well Written Essays - 2500 words”, n.d.)
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(Defibrillators Essay Example | Topics and Well Written Essays - 2500 Words)
“Defibrillators Essay Example | Topics and Well Written Essays - 2500 Words”, n.d. https://studentshare.org/design-technology/1403910-difibrillator.
The author states that the Defibrillator is used to address the heart problem of Ventricular fibrillation and arrhythmia, which are both heart conditions that are associated with irregular heartbeat. The device is used to help patients who have abnormal electrical heart activities, which may range from heartbeats that are too fast.
Such devices include automated external defibrillators and implanted cardioverter defibrillators, which offer the much-needed relief away from healthcare facilities. It is crucial to have a full understanding of how the medical device, in this case the defibrillator, works in order to appreciate the hazards associated with its application.
The automated external defibrillator is one of the portable electronic devices within the medical field that is used to automatically diagnose the potentially life-threatening ventricular tachycardia and cardiac arrhythmias. This device can treat these diseases through defibrillation allowing the heart to reestablish an effective rhythm.
Medtronic is headquartered in Minneapolis and was founded in the year 1949. It is an international supplier of technological medical devices with total sales in 2011 totaling $5 billion (Medtronic, 2013).
The problem of the paper is to show how important is the ventricular fibrillation. Cardiac deaths are primarily caused by a fatal abnormal heart rhythm. Many cardiac arrests occur because of VF, and unless detected and defibrillated in time, the victim’s death is certain. It is proven that the chances of successful defibrillation decline at the rate of 10% per minute of delay.
Each year over 150,000 UK people die from cardiac arrests. From 80s the problem was addressed with Automated External Defibrillators (AEDs) which could interpret heart rhythm and deliver a defibrillation shock. Now AEDs are placed in public locations - airplanes, airports, shopping malls, stadiums, casinos, exercise facilities, office buildings.
This is caused by a condition known as atherosclerosis, where the blood vessels become narrower and less flexible as blood vessels become blocked by blood clots. CVD is the primary cause of death worldwide. 17.5 million people died from CVD
These technology oriented scientists are advancing studies to elaborate on how these hard, non-elastic materials used in conventional electronics such as computers interact with the supple curvaceous human
These exceptions exist, in order to protect the carrier from being liable for the loss of the goods in dire circumstances (Wilson, 2001). Such exceptions protect the carrier to the extent of their ability to prove that it was indeed necessary to lose the goods at sea. I agree with the exceptions because they only operate at sea.
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