NCLEX-PN

Explanation : Supraventricular tachycardia is simply defined as all tachyarrhythmias with a heart rate of more than 150 beats per minute. The atrial and ventricular cardiac rates are from 150 to 250 beats per minute, the cardiac rhythm is regular, the p wave may not be visible because it is behind the QRS complex, the PR interval is not discernible, the QRS complexes look alike, and the length of the QRS complexes ranges from 0.06 to 0.12 seconds. (See Atrial Arrhythmias ) 6. Identify this cardiac rhythm strip:

A.​ Asystole B.​ Atrial Flutter

C.​ Supraventricular Tachycardia D.​ Premature Atrial Contractions

Correct Response : B Explanation : Atrial flutter, which is a relatively frequently occurring tachyarrhythmia, is characterized by a rapid atrial rate of 250 to 400 beats per minute, a variable ventricular rate, a regular atrial rhythm, and a possibly irregular ventricular rhythm. The P waves are not normal, the flutter wave has a saw tooth look (f waves), the PR interval is not measurable, QRS complexes are uniform, and the length of these QRS complexes is from 0.06 to 0.12 seconds. (See Atrial Arrhythmias ) 7. Identify this cardiac rhythm strip:

A.​ Idioventricular Rhythm B.​ Bundle Branch Block C.​ Sinus Bradycardia D.​ Atrial Flutter

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