cardiac cycle karius

Question 1

normal aortic and pulmonary pressures

Answer 1

aortic: 120/70
pulmonary: 25/15

Question 2

pressures in heart chambers

Answer 2

Atria: 15/4
RV: 25/0
LV: 120/0

Question 3

closing of aortic valve produces this in the aortic pressure wave

Answer 3

dicrotic notch

atria shows a similar wiggle

Question 4

third heart sound caused by

Answer 4

blood rushing into the ventricle during the rapid filling phase

Question 5

fourth heart sound

Answer 5

hear during atrial contraction

result of last little bit of blood being squeezed into the ventricle

Question 6

murmur is heard when either

Answer 6

blood is moving in a direciton it shouldnt be moving

blood is having a hard time moving in direction it should be moving in

Question 7

diastolic murmur heard when

Answer 7

• aortic regurgitation, blood moving back into the aorta or pulmonary artery (moving in a direction it shouldnt be)
• can’t get into ventricle due to stenosis (hard time moving in direction it should be moving in)

Question 8

“a” wave in JP created by

Answer 8

atrial contraction

- no valve between atria and great veins so pressure reflected backwards

Question 9

c wave in JP created by

Answer 9

period of isovolumetric contraction in the ventricles - bulging of wall back into the atria

Question 10

v wave in JP created by

Answer 10

blood returning back to the heart but can’t enter the ventricle