Why is defibrillation in the first few minutes of cardiac arrest so critical?
A) If cardiac arrest is not treated within the first few minutes, ventricular fibrillation will convert to asystole, a non-shockable heart rhythm.
B) Research has shown that a heart in cardiac arrest will continue to pump blood for a few minutes before cardiac output drops to zero.
C) In the first few minutes of cardiac arrest, the blood pressure is still normal, but will drop quickly, making successful defibrillation less likely.
D) In the first few minutes of cardiac arrest the heart is still warm, but begins to cool rapidly making it less receptive to a defibrillatory shock.
Question 2
Blood pressure is defined as:
A) stroke volume heart rate SVR.
B) stroke volume diastolic pressure SVE.
C) heart rate preload SVR.
D) afterload preload SVE.
Critical thinking skills
Anatomical sites for cardiac function
The Critical Weather Maker: Atmospheric Stability
The cardiac cycle
Intraaortic balloon pump. The balloon deflates during systole, so cardiac output is unimpeded.
Cardiac muscle