Functions and dynamics of blood circulation.

Question 1

What is pulse?

Answer 1

Refers to alterations in pressure and volume inside arteries as a consequence of systole of the left ventricle.

Question 2

How can pulse be detected?

Answer 2

Through palpation of an artery lying close to the body surface or sphygmography. Due to the difference between systolic and diastolic pressures.

Question 3

What is measurement of pulse used for?

Answer 3

Enables evaluation of the cardiac cycle in the periphery.

Question 4

Which features are usually measured?

Answer 4

Pulse frequency
rythm
amplitude
power of the wave
degree of possible wave supression

Question 5

Which arteries are normally used for pulse palpation?

Answer 5

a. radialis

a. carotis

Question 6

What is pulse pressure?

Answer 6

Difference between systolic and diastolic press. 120/80 –> 40 mm/Hg (120-80)

Question 7

What is PVW?

Answer 7

Pulse Wave Velocity –> an index of arterial stiffness. Can be measured as an interval between occurence of pulse wave on two points of the body surface.

Question 8

What can be the result of increased stiffness of arteries?

Answer 8

A riskc factor for hypertension (High blood pressure)