Lab 1: Resting CV Measurements Flashcards Preview

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Flashcards in Lab 1: Resting CV Measurements Deck (18):
1

At what sites on the heart do we auscultate the primary heart sounds?

Base and apex

2

What does S1 correspond to?

Onset of systole; closing of the AV valves (mitral and tricuspid)

3

What does S2 correspond to?

End of systole; closing of the aortic and pulmonic valves

4

What are the primary heart sounds the result of?

Turbulence, or disruption of flow, downstream from the closing valves

5

What causes the pulsations you feel when you take a pulse?

A bolus of blood moving through the artery

6

To what pressure are you supposed to fully inflate the BP cuff?

At least 200 mmHg

7

At what rate should you let the BP cuff drain?

2-3 mmHg per sec

8

What is the first Korotkoff sound? What does this indicate?

The first consecutive taps heard indicate the SBP

9

What is the fifth Korotkoff sound? What does it indicate?

The disappearance of the taps indicates the DBP.

10

What is systolic BP?

Peak pressure experienced by the arterial wall

11

What is diastolic BP?

Basal pressure experienced by the arterial wall

12

What are some common errors when measuring BP?

Tucking the stethoscope under the cuff, placing it in the middle of the antecubital fossa or below the elbow, under inflating the cuff, releasing the pressure too slowly or too quickly, allowing the subject to hold their arm out during measurement

13

Equation for MAP

MAP = DBP + 1/3 PP

14

Equation for Pulse Pressure

PP = SBP - DBP

15

Equation for MAP during exercise

MAP(exercise) = DBP + 1/2 PP

16

Equation for Rate-Pressure Product

RPP = SBP x HR

17

What is RPP a measure of?

Amount of work/stress experienced by the heart

18

What happens to MAP as exercise intensity increases?

Time spent in diastole shortens, so that at moderate to high work intensities diastolic time is approx equal to time spent in systole