PA Lines

Question 1

RA Pressure

Answer 1

2-6 mmHg

Question 2

RV Pressure

Answer 2

20-30/0-6 mmHg

Only measured during insertion

Question 3

PAS

Answer 3

20-30 mmHg - Together with PAD indicates R vent afterload

Question 4

PAD

Answer 4

8-15 mmHg - Together with PAS indicates R vent afterload
- If correlated with W/ PCWP 1-4mmHg diff, can be used for L Preload (in absence of lung pathology, and if readings are in normal range, otherwise need to wedge

Question 5

PCWP

Answer 5

8-12 mmHg - Gold standard indicator of L Preload

Question 6

CO

Answer 6

4-8L/min

Question 7

CI

Answer 7

CO corrected for body surface area

2.5-4L/min

Question 8

SVR

Answer 8

800-1400 dynes/sec/cm-5

Indicates L afterload

Question 9

PVR

Answer 9

100-250 dynes/sec/cm-5 - Gold standard for R afterload, where PAP can also show, this is definitive

Question 10

What PA measure show preload

Answer 10

RA Pressure - R side

PCWP - L side

Question 11

What PA measures show afterload

Answer 11

PAS/PAD/PAM - analogue for R afterload
PVR - calculated gold standard measure for R Afterload
SVR - calculated gold standard measure for L Afterload

Question 12

What parameters speak to contractility

Answer 12

CO/CI