How can you tell the difference between Vtach and VFib?
How can you tell the difference between Vtach and VFib?
Vfib is rapid totally incoordinate contraction of ventricular fibers; the EKG shows chaotic electrical activity and clinically the patient has no pulse. Vtach is defined by QRS greater than or equal to . 12 secs and a rate of greater than or equal to 100 beats per minute.
What is coarse ventricular fibrillation?
Ventricular fibrillation (VF) has been classified electrocardiographically as “fine amplitude” or “coarse amplitude” VF. It has been suggested that coarse VF represents increased “synchronization” of myocardial activation which could result in lower thresholds for defibrillation.
Which leads are best for a rhythm strip and why is a rhythm strip necessary?
To assess the cardiac rhythm accurately, a prolonged recording from one lead is used to provide a rhythm strip. Lead II, which usually gives a good view of the P wave, is most commonly used to record the rhythm strip.
Do you shock VFib or V-tach?
If in doubt, it is acceptable to deliver a shock. If it is fine v-fib, you may terminate the rhythm; however, if the rhythm is asystole, defibrillation will be ineffective and you can follow the asystole protocol with confidence.
Is VFib a shockable rhythm?
There are two shockable rhythms and two non-shockable rhythms. The two shockable rhythms are: Ventricular Fibrillation, or VFib. Pulseless ventricular tachycardia, or V-tach.
How do you read ventricular fibrillation?
ECG findings in Ventricular Fibrillation (VF)
- Chaotic irregular deflections of varying amplitude.
- No identifiable P waves, QRS complexes, or T waves.
- Rate 150 to 500 per minute.
- Amplitude decreases with duration (coarse VF –> fine VF)
What do the precordial leads look at?
The precordial, or chest leads, (V1,V2,V3,V4,V5 and V6) ‘observe’ the depolarization wave in the frontal plane. Example: V1 is close to the right ventricle and the right atrium. Signals in these areas of the heart have the largest signal in this lead. V6 is the closest to the lateral wall of the left ventricle.
What are the 4 fatal rhythms?
You will need to be able to recognize the four lethal rhythms. Asystole, Ventricle Tachycardia (VT), Ventricle Fibrillation (VF), and Polymorphic Ventricle Tachycardia (Torsade de pointes).
Do you do compressions for VFib?
First call 911 or your local emergency number. Then start CPR by pushing hard and fast on the person’s chest — about 100 to 120 compressions a minute. Let the chest rise completely between compressions. Continue CPR until an automated external defibrillator (AED) is available or emergency personnel arrive.
What is fine ventricular fibrillation (VF)?
Ventricular fibrillation with low amplitude waves (less than 3 mm) is called “fine” VF. Fine ventricular fibrillation is even more dangerous than coarse ventricular fibrillation, because there is even less contractility of the myocardium, which results in a smaller amplitude.
What are Vtach and Vfib arrhythmias?
Ventricular arrhythmias like VTACH and VFIB occur in and out of the hospital. The only difference is, people aren’t hooked up to the monitors. So instead of catching the arrhythmia, the patient goes unresponsive. VTACH and VFIB are HUGE deals, and these ventricular arrhythmias are deadly!
What is coarse amplitude ventricular fibrillation?
Ventricular fibrillation (VF) has been classified electrocardiographically as “fine amplitude” or “coarse amplitude” VF. It has been suggested that coarse VF represents increased “synchronization” of myocardial activation which could result in lower thresholds for defibrillation.
What is the difference between polymorphic Vtach and Vfib?
VFIB is similar to polymorphic VTACH, but on a much wider scale. Essentially, all of the ventricular cells are irritable and it produces a disorganized chaotic arrhythmia that does not perfuse the body and is a CODE BLUE. This will degenerate into asystole unless rapidly reversed.
