Final answer:
True, survival rates for cardiac arrests from non-Vfib/pulseless Vtach rhythms are generally poorer because conditions like asystole or PEA do not respond to defibrillation.
Step-by-step explanation:
The statement "Survival rates are poor for arrests associated with rhythms other than Vfib/pulseless Vtach" is generally considered true. Ventricular fibrillation (Vfib) and pulseless ventricular tachycardia (Vtach) are life-threatening cardiac arrhythmias where the ventricles quiver (Vfib) or beat too rapidly to pump blood effectively (Vtach). These conditions are often treatable with defibrillation, which aims to reset the heart's rhythm back to normal. In contrast to cases with Vfib/Vtach, cardiac arrests due to other rhythms, such as asystole or pulseless electrical activity (PEA), have significantly lower survival rates because these conditions do not respond to defibrillation. External automated defibrillators (EADs) are effective in treating Vfib by stopping the heart briefly so that the sinoatrial (SA) node can trigger a normal conduction cycle, but they are not effective for asystole or PEA.