Cardiac Cycle

Question 1

at rest, what does heart spend more time in?

Answer 1

diastole

Question 2

Murmur causes

Answer 2

stenosis, regurg, ejection thru dilated chamber, blood flow increase, VSD

Question 3

Phase 1 (atrial systole)

Answer 3

a wave

coincides with Ventricular diastole (EDV)

Question 4

a wave

Answer 4

transient rise of LA pressure

Question 5

Phase 2 (isovolumetric contraction)

Answer 5

QRS complex!!

AV valves close (V>A pressure)

Question 6

Phase 3 (rapid ejection)

Answer 6

V>A pressure
semilunar OPEN
(70% SV)

Question 7

Phase 4 (reduced ejection)

Answer 7

T-wave!!

V pressure dec, blood flow dec (30%)
semilunar close (DIASTOLE STARTS)

Question 8

Phase 5 (isovolumetric relaxation)

Answer 8

ESV, all valves closed

aortic pressure declines with elastic recoil

Question 9

Phase 6 (rapid filling)

Answer 9

AV OPEN and PASSIVE filling begins

Question 10

Heart Sound 1

Answer 10

beg of phase 2, closure of AV valves

Question 11

Heart Sound 2

Answer 11

beg of phase 5; closure of semilunar valves (a>pt)

Question 12

3rd HS

Answer 12

mid of Stg 6; path in adults

Question 13

4th HS

Answer 13

mid of Phase 1; old people

Question 14

Semilunar murmurs

Answer 14

stenosis–> systolic

insuffiency–>diastolic

Question 15

AV murmurs

Answer 15

stenosis–> diastolic

insufficiency–> systolic

Question 16

Jugular Venous Pulse Wave

Answer 16

used to eval pressure in RA bc no valves

Question 17

A wave of JVPW

Answer 17

(phase 1) venous distention due to atrial systole

Question 18

C wave

Answer 18

(phase 3) close of tricuspid bulges into atrium during isoV contraction

Question 19

X descent

Answer 19

(phase 2-4) decreased p due to RA relax

Question 20

V wave

Answer 20

(phase 6) filling of RA with venous blood

Question 21

Y descent

Answer 21

(mid6-7) rapid flow of blood into RV @ end of isoV relax