Interpret the following rhythm:

A) Normal sinus rhythm
B) Sinus bradycardia
C) Sinus tachycardia
D) Sinus arrhythmia

Question

Interpret the following rhythm:

A) Normal sinus rhythm 
B) Sinus bradycardia 
C) Sinus tachycardia 
D) Sinus arrhythmia

Quizplus · Accepted Answer

Normal sinus rhythm (NSR)reflects normal conduction of the sinus impulse through the atria and ventricles.Atrial and ventricular rates are the same and range from 60 to 100 beats per minute.Rhythm is regular or essentially regular.PR interval is 0.12 to 0.20 seconds.QRS interval is 0.06 to 0.10 seconds.P and QRS waves are consistent in shape.Sinus tachycardia results when the SA node fires faster than 100 beats per minute.Bradycardia is defined as a heart rate less than 60 beats per minute.Sinus arrhythmia is a cyclical change in heart rate that is associated with respiration.The heart rate slightly increases during inspiration and slightly slows during exhalation because of changes in vagal tone.

Interpret the Following Rhythm