1. When a single irritable site in the atria initiates many electrical impulses at a rapid rate, the rhythm is called: a. Sinus rhythm                                 c. Atrial fibrillation b. Atrial...

1. When a single irritable site in the atria initiates many electrical impulses at a rapid rate, the rhythm is called:

a. Sinus rhythm                                 c. Atrial fibrillation

b. Atrial flutter                  d. Atrial tachycardia

2. SVT may occur in a healthy person and can result from:

a. Overexertion                                c. Hypokalemia

b. Hypoxia                           d. All the above