The nurse is analyzing a patient's telemetry strip and observes this regular pattern appearance below. How should the nurse document this finding?
Explanation & Rationale
Atrial flutter is a supraventricular tachyarrhythmia characterized by a rapid, regular atrial rate, typically between 250 and 350 beats per minute. It is caused by a macro-reentrant circuit, most commonly involving the tricuspid valve annulus in the right atrium, which creates a distinct electrical signature on the electrocardiogram. A. A premature atrial contraction (PAC) is a single ectopic beat that occurs earlier than the next expected sinus beat. It does not create a continuous "sawtooth" pattern across the baseline but rather appears as an isolated, slightly distorted P wave followed by a normal-appearing QRS complex. B. Ventricular tachycardia (VT) is a life-threatening arrhythmia originating in the ventricles. It is characterized by wide, bizarre QRS complexes and the absence of P waves. The rhythm in the provided description shows a rapid atrial oscillation that is distinct from the regular, wide complexes seen in VT. C. Atrial flutter is classic for its "sawtooth" or "F-wave" appearance on the telemetry strip. Because the atrioventricular (AV) node cannot conduct every impulse from the rapid atrial circuit, the rhythm often presents with a fixed conduction ratio (e.g., 2:1 or 4:1), resulting in a regular ventricular response. D. A premature ventricular contraction (PVC) is an isolated, wide, and bizarre QRS complex that occurs prematurely and is not preceded by a P wave. Like the PAC, it is a single event within an otherwise underlying rhythm and does not constitute a sustained, regular atrial pattern.