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DEFIBRILLATORS.pptx created by KIRAN KARETHA
Defibrillation is a process in which an electronic device sends an electric shock to the heart to stop an extremely rapid, irregular heartbeat, and restore the normal heart rhythm. Defibrillator is an electronic apparatus used to counteract atrial or ventricular fibrillation by application of a brief electric shock to the heart.
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DEFIBRILLATORS.pptx created by KIRAN KARETHA
- 1. DEFIBRILLATORS PRESENTED BY MS. KIRANK. KARETHA M.SC (N), MSN (CCN)
- 2. DEFIBRILLATION •Defibrillation is aprocess in which an electronic device sends an electric shock to the heart to stop an extremely rapid, irregular heartbeat, and restore the normal heart rhythm.
- 3. DEFIBRILLATOR: •Defibrillator is anelectronic apparatus used to counteract atrial or ventricular fibrillation by application of a brief electric shock to the heart. •An electrical device used to counteract fibrillation of the heart muscle and restore normal heartbeat by applying a brief electric shock.
- 4. Need for Defibrillation: •cardiacarrhythmias (improper beating of the heart, whether irregular, too fast or too slow.) •ventricular fibrillation. •pulseless ventricular tachycardia.
- 5. Purpose: •Defibrillation is performedto correct life-threatening fibrillation of the heart, which could result in cardiac arrest. •It should be performed immediately after identifying that the patient is experiencing a cardiac emergency, has no pulse and is unresponsive.
- 6. PRINCIPLE OF DEFIBRILLATUON •Energystorage capacitor is charged at relatively slow rate. •Energy stored in capacitor is then delivered at a relatively rapid rate to chest of the patient •Simple arrangement involve the discharge of capacitor energy through the patient’s own resistance.
- 7. Joules of defibrillator: •Theamounts of joules a defibrillator delivers depends on the type of defibrillator and the condition being treated: •Biphasic defibrillator: The initial shock for an adult is typically between 150 and 200 joules. For children, the initial shock is 2 joules. •Monophasic defibrillator: The initial shock is typically 360 joules.
- 8. Difference between monophasicand biphasic defibrillator: •The main difference between a monophasic and a biphasic defibrillator is the type of electric shock they deliver: •Monophasic defibrillator: Delivers a single electric shock •Biphasic defibrillator: Delivers two types of electric shocks
- 9. Monophasic and Biphasicshoch delivery:
- 10. Types of defibrillatorelectrodes: 1. Spoon shaped electrode: applied directly to the heart.
- 11. •2. paddle typeelectrode: applied against the chest wall.
- 12. 3. Pad typeelectrode: applied directly on the chest wall
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- 14. Types of defibrillator: 1.manual external defibrillator 2. manual internal defibrillator 3. automated external defibrillator 4. semi-automated external defibrillator 5. Implanted cardioverter defibrillator 6. wearable cardiac defibrillator
- 15. 1. Manual externaldefibrillator •The units are used in conjunction with electrocardiogram reader, which the healthcare provider uses to diagnose a cardiac condition. •The healthcare provider will then decide what charge to use, based on proven guidelines and experience, and will deliver shock through paddles or pads on the patient’s chest.
- 17. 2. Manual internaldefibrillator •These are the direct descendants of the work of beck and lown. •They are virtually identical to the external version, except that the charge is delivered through internal paddles in direct contact with the heart. •These are almost exclusively found in operating theatres, where a shock is required.
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- 19. Internal defibrillation tothe heart
- 20. 3. Automated externaldefibrillator (AED) •These simple to use units are based on computer technology which is designed to analyze the heart rhythm itself, and then advise the user whether a shock is required. •The automatic units also take time to diagnose and treat the condition far more quickly with a manual unit.
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- 22. 4. Semi automatedexternal defibrillator •A semi-automated defibrillator (AED) is a medical device that analyzes the heart's rhythm and prompts the user to deliver a shock if an abnormal rhythm is detected.
- 23. Difference between semi-automatedand automated Defibrillator: •The difference between a semi-automated and fully- automated AED is that the semi-automatic AED requires the user to press a button to deliver the shock, while the fully-automated AED does it without intervention.
- 24. 5. Implantable cardioverterdefibrillator •An implantable cardioverter-defibrillator (ICD) is a small battery-powered device placed in the chest. •It detects and stops irregular heartbeats, also called arrhythmias. •An ICD continuously checks the heartbeat. It delivers electric shocks, when needed, to restore a regular heart rhythm.
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- 26. 6. Wearable cardiacdefibrillator •A wearable cardiac defibrillator (WCD) is a battery- powered device that monitors the heart and delivers an electric shock to correct irregular heart rhythms. •The WCD is worn as a vest under clothing, with defibrillator pads on the back and an electrode belt around the rib cage. It continuously monitors the heart rate and rhythm, and automatically delivers a shock if it detects a life-threatening arrhythmia.
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