Biomaterial Database

Effect of perfusate temperature on pulmonary vascular resistance and compliance by arterial and venous occlusion in the rat. 2005

Alessandro Rubini

Department of Human Anatomy and Physiology, Section of Physiology, University of Padova, Via Marzolo 3, 35100 Padova, Italy. alessandro.rubini@unipd.it

The effect of different temperatures of perfusing fluid was tested on the pulmonary circulation of the rat. With increasing temperature, a decrease in overall pulmonary vascular resistance was observed, which depended on the associated reductions of arterial, venous and capillary vascular resistances. The highest sensitivity to temperature changes was exhibited by the venous segment. The overall sensitivity of pulmonary vessels to temperature caused a reduction in hydraulic resistance of about 1% for each 1 degrees C temperature increment. Compliance of pulmonary vessels increased when perfusate temperature was increased from between 25 and 35 degrees C to 45 degrees C, probably due to a direct effect of temperature on the stiffness of the vessel walls.

UI	MeSH Term	Description	Entries
D008297	Male		Males
D010477	Perfusion	Treatment process involving the injection of fluid into an organ or tissue.	Perfusions
D011651	Pulmonary Artery	The short wide vessel arising from the conus arteriosus of the right ventricle and conveying unaerated blood to the lungs.	Arteries, Pulmonary,Artery, Pulmonary,Pulmonary Arteries
D011652	Pulmonary Circulation	The circulation of the BLOOD through the LUNGS.	Pulmonary Blood Flow,Respiratory Circulation,Circulation, Pulmonary,Circulation, Respiratory,Blood Flow, Pulmonary,Flow, Pulmonary Blood,Pulmonary Blood Flows
D011667	Pulmonary Veins	The veins that return the oxygenated blood from the lungs to the left atrium of the heart.	Pulmonary Vein,Vein, Pulmonary,Veins, Pulmonary
D004548	Elasticity	Resistance and recovery from distortion of shape.
D005260	Female		Females
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
D013696	Temperature	The property of objects that determines the direction of heat flow when they are placed in direct thermal contact. The temperature is the energy of microscopic motions (vibrational and translational) of the particles of atoms.	Temperatures
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