A Review of The Properties of The Pulmonary Artery in Pulmonary Arterial Hypertension with Emphasis on The Water Hammer

Abstract

The transfer of pressure through the entire circulation and control of blood flow are necessary preconditions for the development of pulmonary circulation. For these tasks to be fulfilled optimally and taking into account the normally low pressure in the pulmonary circulation, the pulmonary arteries must normally show high elasticity (compliance) [6]. The relationship between pressure and volume, called volume elasticity or arterial compliance, is used to describe this issue. This is usually defined by the quotient: Compliance(C)= (stroke volume)/ (pulse pressure) = SV/PP (I), where: pulse pressure = systolic pressure minus diastolic pressure. This calculates the blood volume that can be accommodated in a vessel, with a predefined diameter, at a known pressure. An