(133) Shockable Rhythms

1. Cardiac arrest associated with shockable rhythms have:

A. A lower rate of return of spontaneous circulation (ROSC) and a higher rate of hospital discharge than cardiac arrests associated with non-shockable rhythms.

B. A higher rate of ROSC and a higher rate of hospital discharge than cardiac arrests associated with non-shockable rhythms.

C. A lower rate of ROSC and a lower rate of hospital discharge than cardiac arrests associated with non-shockable rhythms.

D. A higher rate of ROSC and a lower rate of hospital discharge than cardiac arrests associated with non-shockable rhythms.

2. The most successful treatment for ventricular fibrillation is:

A. IV Lidocaine bolus followed cardiac compressions for 2 minutes

B. Cardiac thump to initiate a mechanical “defibrillation”

C. Cardiac chest compressions for 2 minutes followed by IV Amiodarone

D. Early and prompt defibrillation with a biphasic defibrillator

3. The main difference between electrical defibrillation and electrical cardioversion is:

A. That with electrical cardioversion the electrical shock is synchronized with the ECG and delivered at the upstroke of the QRS on the ECG.

B. That with electrical cardioversion, the electrical shock is synchronized with the ECG and delivered at the upstroke of the T-wave on the ECG

C. That with defibrillation, the electrical shock is synchronized with the ECG and the shock is delivered during a positive fluctuation of the fibrillation wavelet.

D. That with defibrillation, the electrical shock is synchronized with the ECG and the shock is delivered during a negative fluctuation of the fibrillation wavelet.

4. Several factors have been associated with improved rates of ROSC in patients with shockable rhythms. These include:

A. Witnessed cardiac arrest and greater than 4 minutes to defibrillation

B. Witnessed cardiac arrest and less than 4 minutes to defibrillation

C. Older age and resuscitation duration of less than 10 minutes

D. Younger age and unwitnessed cardiac arrest

5. Ensuring safety when delivering the electrical shock is paramount. Which of the following maneuvers or strategies can be used to maximize safety for the patient and the person delivering the shock:

A. Use of hands-off patch chest electrodes to deliver the shock.

B. Use of copious amounts of alcohol and ECG gel on the paddles prior to delivering the shock.

C. Vocalizing CLEAR and ensuring that all personal working with the animal are not touching the pet immediately after the shock is delivered.

Shaving the fur prior to the delivery of the shock with paddles placed on the sternum and right axilla.

(133) Shockable Rhythms

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