trigeminal rhythm

tri·gem·i·nal rhyth·m

a cardiac arrhythmia in which the beats are grouped in trios, usually composed of a sinus beat followed by two extrasystoles.
Synonym(s): trigeminy

tri·gem·i·nal rhythm

(trī-jem'i-năl ridh'ŭm)
A cardiac arrhythmia in which the beats are grouped in trios, usually composed of a sinus beat followed by two extrasystoles.
Synonym(s): trigeminy.