The best answer is: rapid atrial fibrillation

Arrhythmias involving circuits and bypass tracks (most PSVT's, atrial flutter and ventricular tachycardia) respond well to lower delivered energy.

To convert fibrillation (atrial and ventricular fibrillation), a critical mass of fibrillating myocardium must be simultaneously depolorized frequently requiring much higher levels of delivered energy.

The best answer is: false

Although a secondary assessment tool, the 12-lead ECG does not take priority over determining the mechanism of the stroke using CT or MRI scans. ECG monitoring is recommended for the first 24 hours of evaluation in patients with acute ischemic stroke to detect significant arrhythmias and the onset of atrial fibrillation.

The best answer is: true

The most recent Guidelines repeatedly call for early 12-lead ECG analysis for treating patients with acute coronary syndrome symptoms, emphasizing the use of pre-hospital 12-lead ECG by EMS personnel.

The best answer is: the patient should be placed in a left lateral tilt (30 degrees) position

Current ECC Guidelines discuss the concern that a pregnant uterus may compress the inferior vena cava and reduce venous return, and hamper potential cardiac output. Placing the patient in this position during CPR is classified a IIa recommendation.

The best answer is: false

When a slow heart rate causes a decrease in cardiac output and instability, the treatment should first be to speed up the heart rate. Using a vasopressor to treat symptomatic bradycardia is a bad choice. Pacing is the right choice.