Signin or Join Restore Access

Sinus Arrhythmia | Reference Guide.

ecg rhythm strip for reference guide

EKG Features

Rate: Normal (60-100 bpm) and rate may increase during inspiration
Rhythm: Irregular, varying with respiration
P Wave: Normal
PR Interval: Normal (0.12-0.20 sec)
QRS: Normal (0.06-0.10 sec)
Resembles Normal Sinus Rhythm with the distinction being the intervals from one cardiac complex to the next are changing as influenced by the patients respiratory pattern. Note the changing R to R Intervals.
Sinus arrhythmia is a cyclic variation on a sinus rhythm of more than 10% or 120ms due to respiratory breathing. Sinus arrhythmia is common (and normal) in children. If the variation occurs independent of respiration in an adult, evaluate for sick sinus syndrome.
External Source:

Sinus Arrhythmia - Guide |

Return to EKG Reference Guide Index

An error has occurred. This application may no longer respond until reloaded. Reload 🗙