A prolonged R–R interval indicates which of the following kinds of cardiac arrhythmia?
a. Atrial fibrillation c. Premature ventricu-lar beats
b. Sinoatrial block d. Paroxysmal atrial tachycardia
ANS: B
Sinoatrial blocks occur when the impulse generated at the sinoatrial node is blocked before it can enter the atrial muscle. On the electrocardiogram this is demonstrated by a sudden loss of P waves resulting from the absence of atrial depolarization. The contour of the QRS complex is normal, but the R–R intervals are usually prolonged, indicating the presence of a junctional es-cape rhythm.
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The term "three-way match" refers to patient identification by means of:
A. stated name must match the requisition and the bed label. B. three forms of computerized identification. C. stated name must match the requisition and the armband. D. three forms of paper identification.