Hemodynamic Values

Question 1

Mean Arterial Pressure (MAP)

Answer 1

[(2 x diastolic) + systolic] / 3

Normal : 90 mmHg

Question 2

Mean Pulmonary Arterial Pressure (MPAP)

Question 3

Mean Airway Pressure

Question 4

Peripheral Vascular Resistance (PVR)

Question 5

Ejection Fraction (EF)

Answer 5

Stroke volume / End diastolic volume

Normal : 0.5 - 0.7

EF < 0.30 associated with comprised cardiovascular function and imminent heart failure

Question 6

Oxygen Consumption

Question 7

Cardiac Output (CO)

Answer 7

HR x Stroke Volume (SV)

Normal : 4-8 L/min

Question 8

Cardiac Index (CI)

Answer 8

CO / Body surface area (BSA)
OR
Blood volume (Q) / BSA

Normal : 2.5 - 4 L/min/m2

Question 9

Stroke Index (SI)

Answer 9

SV / BSA

Normal : 35-55 mL/beat/m2

Question 10

Stroke Volume (SV)

Answer 10

CO / HR

Normal :

Question 11

Cardiac Cycle time

Question 12

Left/Right Ventricular Stroke Work (LVSW)

Answer 12

LVSW = [(MAP x SV) x 0.0136]
RVSW = [(MPAP x SV) x 0.0136]

Question 13

Left/Right Ventricular Stroke Index (LVSI)

Answer 13

LVSWI = LSW / BSA
Normal : 40-60 g-m/m2

RVSWI = RSW / BSA
Normal : 7-12 g-m/m2

Question 14

Right Atrium Pressure (CVP)

Answer 14

2-6

> 6 may mean hypervolemia or right ventricular failure

< 2 may mean hypovolemia / hemorrhage / vasodilation

Question 15

Right Ventricle Pressure (PA Pressure)

Answer 15

25/10

> 35/15 : Pulmonary HTN / Fluid overload / Hypervolemia

< 20/5 : Hypovolemia / Cardiovascular collapse

Question 16

Left Atrium Pressure / Pulmonary Veins (PCWP)

Answer 16

Normal : < 18 mmHg

> 18 mmHg : Left Ventricular failure / Fluid overload

Question 17

Left Ventricular Pressure (ABP)

Answer 17

120/80

Question 18

Systemic Vascular Resistance (SVR)

Answer 18

[(MAP - CVP) / CO] x 80

Normal : 900-1500 dyne x s x cm-5

Question 19

Pulmonary Vascular Resistance (PVR)

Answer 19

[(MPAP - PAOP)/CO)] x 80

Normal : 100-250 dyne x s x cm-5