Sinus Arrhythmia by ECG Finding

**Semantic type:** Finding

**Definition:** An electrocardiographic finding in which the sinus rate fluctuates with the respiratory cycle. (CDISC)

**Synonyms:** - Respiratory Sinus Arrhythmia - SINUS ARRHYTHMIA - Sinus Arrhythmia - Sinus Arrhythmia by EKG Finding - Sinus arrhythmia