SHUPA Physiology - Vascular Function

These are 8x more distensible than arteries

Loss of this happens to vessels with age and results in greater differences between systolic and diastolic volumes

This refers to a dip in aortic pressure

This is delayed with increase in volume or stress relaxation in order to accommodate the extra blood flow or hemorrhage

• Aortic incisura

• Distensibility

• Compliance

• Accommodation

This is found by subtracting the diastolic volume from the systolic volume

• Stroke volume

• Arterial compliance

• Pulse pressure

• Distensibility

This condition results in limited distensibility and increased systolic pressure because there is no accommodation for flow

• Aortic stenosis

• Patent ductus arteriosus

• Arteriosclerosis

• Aortic regurgitation

This condition results from the valve not opening properly and is reflected by a flattened pressure contour

• Aortic stenosis

• Patent ductus arteriosus

• Arteriosclerosis

• Aortic regurgitation

This condition results from the valve not closing properly which sends back flow into the ventricle, causing huge pressure differences between systolic and diastolic pressures

• Aortic stenosis

• Patent ductus arteriosus

• Arteriosclerosis

• Aortic regurgitation

This condition results from the structure between the aorta and artery being persistently opened, which causes some blood to escape into the pulmonary circulation. This causes an overall increase in systolic pressure and decrease in diastolic pressure.

• Aortic stenosis

• Patent ductus arteriosus

• Arteriosclerosis

• Aortic regurgitation

Larger incisurae occur in these two structures rather than smaller vessels that show less variation between systole and diastole

• Femoral artery

• Arteriole

• Proximal aorta

• Capillary