Biomaterial Database

[Hemodynamic changes in normovolemic and hypovolemic canines during epidural block]. 1992

X L Zhuang

First People's Hospital, Shanghai.

Hemodynamic changes were studied in normovolemic and hypovolemic canines during epidural block. In normovolemic canines after epidural block, stroke volume (SV) increased, heart rate (HR) slowed down and total peripheral resistance (TPR) and mean arterial pressure (MAP) decreased. In addition, hepatic vascular resistance (HVR) and renal vascular resistance (RVR) decreased but quantity of hepatic artery per beat (QHR/HR), quantity of hepatic artery per beat (QPV/HR) and quantity of renal artery per beat (QRA/HR) increased significantly. In hypovolemic canines, the hemodynamic changes after epidural block were similar in normovolemic ones but more abrupt. The increase of QHA/HR, QPV/HR and QRA/HR was not statistically significant, but minute hepatic blood volume quantity of hepatic artery (QHA), quantity of portal vein (QPV) and hepatic blood flow (HBF) decreased significantly. In hypovolemic canines during epidural block, ischemic injury of the liver should be alerted and abrupt hemodynamic changes should be well controlled.

UI	MeSH Term	Description	Entries
D008102	Liver Circulation	The circulation of BLOOD through the LIVER.	Hepatic Circulation,Circulation, Liver,Circulation, Hepatic
D012079	Renal Circulation	The circulation of the BLOOD through the vessels of the KIDNEY.	Kidney Circulation,Renal Blood Flow,Circulation, Kidney,Circulation, Renal,Blood Flow, Renal,Flow, Renal Blood
D001810	Blood Volume	Volume of circulating BLOOD. It is the sum of the PLASMA VOLUME and ERYTHROCYTE VOLUME.	Blood Volumes,Volume, Blood,Volumes, Blood
D004285	Dogs	The domestic dog, Canis familiaris, comprising about 400 breeds, of the carnivore family CANIDAE. They are worldwide in distribution and live in association with people. (Walker's Mammals of the World, 5th ed, p1065)	Canis familiaris,Dog
D006339	Heart Rate	The number of times the HEART VENTRICLES contract per unit of time, usually per minute.	Cardiac Rate,Chronotropism, Cardiac,Heart Rate Control,Heartbeat,Pulse Rate,Cardiac Chronotropy,Cardiac Chronotropism,Cardiac Rates,Chronotropy, Cardiac,Control, Heart Rate,Heart Rates,Heartbeats,Pulse Rates,Rate Control, Heart,Rate, Cardiac,Rate, Heart,Rate, Pulse
D006439	Hemodynamics	The movement and the forces involved in the movement of the blood through the CARDIOVASCULAR SYSTEM.	Hemodynamic
D000767	Anesthesia, Epidural	Procedure in which an anesthetic is injected into the epidural space.	Anesthesia, Extradural,Anesthesia, Peridural,Epidural Anesthesia,Anesthesias, Epidural,Anesthesias, Extradural,Anesthesias, Peridural,Epidural Anesthesias,Extradural Anesthesia,Extradural Anesthesias,Peridural Anesthesia,Peridural Anesthesias
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia
D014655	Vascular Resistance	The force that opposes the flow of BLOOD through a vascular bed. It is equal to the difference in BLOOD PRESSURE across the vascular bed divided by the CARDIAC OUTPUT.	Peripheral Resistance,Total Peripheral Resistance,Pulmonary Vascular Resistance,Systemic Vascular Resistance,Peripheral Resistance, Total,Resistance, Peripheral,Resistance, Pulmonary Vascular,Resistance, Systemic Vascular,Resistance, Total Peripheral,Resistance, Vascular,Vascular Resistance, Pulmonary,Vascular Resistance, Systemic