Abnormalities of arterial blood pressure

2021-05-31 05:06 PM

In patients with aortic stenosis, the opening diameter of the aortic valve is markedly restricted, and the aortic pulse pressure is also markedly reduced because outflow is reduced as it passes through the narrowed valve.

In some cases, pathology of the circulatory system causes abnormal lines of arterial blood pressure in addition to a change in blood pressure. Especially, in conditions such as aortic stenosis, ductus arteriosus, aortic regurgitation.

In patients with aortic stenosis, the opening diameter of the aortic valve is markedly restricted, and the aortic pulse pressure is also markedly reduced because outflow is reduced as it passes through the narrowed valve.

In a patient with a patent ductus arteriosus, half or more of the blood pumped into the aorta by the left ventricle immediately flows posteriorly through the ductus arteriosus into the pulmonary artery and pulmonary vessels, such that the blood pressure diastolic will drop very low before the next heartbeat.

In patients with aortic regurgitation, the aortic valve is absent or does not close completely. So, after each heartbeat, the blood that has just been pumped into the aorta will immediately return to the left ventricle. As a result, aortic pressure can drop to zero between heartbeats. And there will be no defect of the pulsating aorta because there is no closed aorta.