POWERED EQUIPMENT

DEFIBRILLATOR

Emergency equipment needed in the OT for restoring normal heartbeat


This equipment allows an electric shock to be applied to the heart to correct ventricular or atrial fibrillation.
- It may be mains or battery operated and can apply the shock through the chest wall or via electrodes placed directly in contact with the walls of the heart.
- When switched on, the defibrillator charges a condenser to a maximum energy of 320 J external application, and 100 J using internal electrodes.
- The level of stored energy output can be continuously controlled between 5 and 320 J and this energy is released in a pulse lasting about 3 milliseconds.
- In the case of atrial fibrillation the defibrillator is coupled with an electrocardiograph so that the defibrillation discharge is delivered in synchronization, normally 40 milliseconds delay after the peak of the R wave of the patient’s ECG.
- Although different makes of defibrillator vary slightly in the method of operation, basically the same technique is used.
- The cardiac recorder defibrillator when used in an emergency the instruction are printed on the side of the box.
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