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ECG arrhythmias
Carnegie ventricular arrhythmias
| Question | Answer |
|---|---|
| Where do ventricular beats and rhythms originate? | Below the bundle of His in a pacemaker site in either the right or left ventricle. |
| When an impulse arises in the ventricles how does it travel? | From cell to cell through the myocardium depolarizing the ventricles asynchronously |
| Since the ventricles are not stimulated simultaneously in ventricular arrhythmias, the stimulus spreads through the ventricles in an aberrant manner resulting in | Wide QRS complex of 0.12 second or greater |
| Repolarization in ventricular arrhythmias result in | ST segment and T waves which slope in the opposite direction from the mean QRS deflection |
| Is a p-wave produced in ventricular rhythms? | No. |
| Ventricular arrhythmias include | PVCs, VT, VF, idioventricular rhythm, accelerated idioventricular rhythm |
| The term used when the QRS complexes are of the same morphology in the same lead the same rhythm | Monomorphic VT |
| What is the term used when the QRS complexes differ in morphology in the same lead? What is the VT called? | Polymorphic VT |
| Treatment protocols for unstable monomorphic VT with Paul Pulse | Convert the written using synchronized cardioversion beginning at 100 jewels biphasic energy dose |
| Torsades depois ventricular tachycardia means | Twisting of the points |
| Treatment protocol 40d Pvt | Immediate unsynchronized shock at 200 joules biphasic energy dose |
| Can cardioversion be used on torsades? | No. |
| What happens in ventricular fibrillation? | A disorganized chaotic electrical focus in the ventricles takes over control of the heart. |
| V fib With large amplitude waves is called | Course vis VF |
| If VF waves are small, the rhythm is called | Fine VF |
| What happens when VF occurs | There is no cardiac output, peripheral pulses and blood pressure are absent, and patient becomes unconscious immediately |
| Treatment protocols VF | If there is no pulse and the patient is unconscious, defibrillator at 200 joules biphasic. If the arrested unwitnessed, perform CPR for 5 cycles before the initial shock. |
| What is the rate for a do ventricular rhythm? | 20 to 40 beats per minute |
| What is the rate for accelerated idioventricular rhythm? | 50 to 100 beats per minute |
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