Dynamic relations between right and left atrial pressure shifts induced by catecholamines.
Acute experiments on cats showed that injection of catecholamines induced unidirectional shifts in right and left atrial pressure in 70% cases (these shifts were positive in one half of cats and negative in the other half). In 30% cases, the left and right atrial pressures changed in opposite direction: right atrial pressure decreased, while left atrial pressure increased (19%), or vice versa (11%). The pressure changes in the left atrium had greater amplitude and longer duration compared to those in the right atrium.
Tkachenko
B I
BI
Department of Visceral System Physiology, Institute of Experimental Medicine, Russian Academy of Medical Sciences, St. Petersburg, Russia.
Evlakhov
V I
VI
Poyasov
I Z
IZ
D000818:Animals; D016275:Atrial Function / Q000187:drug effects; D001794:Blood Pressure / Q000187:drug effects*; D002395:Catecholamines / Q000494:pharmacology* / Q000502:physiology; D002415:Cats; D004837:Epinephrine / Q000494:pharmacology / Q000502:physiology; D006325:Heart Atria / Q000187:drug effects*; D009638:Norepinephrine / Q000494:pharmacology / Q000502:physiology
D002395:Catecholamines; D009638:Norepinephrine; D004837:Epinephrine