Measurement of Pressure

Question 1

How to you measure right atrial pressure?

Answer 1

Jugular venous pressure

Question 2

How is JVP taken?

Answer 2

Right internal jugular vein located.
Estimate highest visible pulsation above sternal angle.
+4cm

Question 3

What is the normal value of JVP?

Answer 3

5-8cm H2O

Question 4

How is a waveform found of JVP?

Answer 4

Insert a central line

Question 5

What does the JVP waveform look like?

Answer 5

ACXVY - ie same as LA pressure curve in cardiac cycle, just more dramatic slopes

Question 6

What is cardiac thoracic ratio?

Answer 6

Max horizontal cardiac diameter: max horizontal thoracic diameter

Question 7

What is the normal cardiac thoracic ratio?

Answer 7

Less than 0.5

Question 8

What condition occurs when the cardiac thoracic ratio is higher

Answer 8

Cardiomegaly

Question 9

What artery is used to measure arterial pulse?

Answer 9

Brachial artery

Question 10

What signifies systolic blood pressure?
What signifies diastolic blood pressure?

What causes these sounds?

Answer 10

Korotkoff sounds start
Korotkoff sounds stop

Due to laminar to turbulent to laminar flow

Question 11

What are the requirements for measuring arterial blood pressure?

Answer 11

• Correct cuff size
• Upright, legs crossed, feet fat on floor
• Arm supported
• Resting