Seasonal variations of cardiac output in rats.
Cardiac output of rats shows seasonal variations with low values in spring and summer and high ones in autumn and winter. The stroke volume was much more implicated in these changes than the heart rate. The seasonal changes of cardiac output are probably due to changes of thyroid function.
D000818:Animals; D001794:Blood Pressure; D002200:Capillary Resistance; D002302:Cardiac Output; D002940:Circadian Rhythm; D006339:Heart Rate; D008297:Male; D051381:Rats; D012621:Seasons