Haemodynamic calculations

Question 1

Calculate SVR
Calculate SVRI

What is the normal value?
What is the normal value for SVRI?

What is normal CI?

Answer 1

SVR = (MAP-CVP) / CO x 80

SVRI: (MAP-CVP) / CI x 80

SVR= 900-1200 dynes.s.cm-5

SVRI=1700-2600 dynes.s.cm-5

CI = 2.8-3.5L/min/m2

Question 2

Calculate PVR
Calculate PVRI

What is the normal value?
What is the normal value for PVRI?

Answer 2

PVR = (PAP-PAWP) / CO x80

PVRI = (PAP-PAWP) / CI x 80

PVR = 120-200 dynes.s.cm-5

PVRI = 210-360 dynes.s.cm-5.m2

Question 3

Calculate:

Delivery of 02
Oxygen extraction ratio

Range for:
02 extraction ratio
02 consumption index
02 delivery index

Answer 3

D02 = CO x CaO2 x 10

CaO2 = Hb x sats x 1.34 /100

O2 extraction ratio: CaO2 -CvO2/CaO2

O2 Extraction ratio: 0.22-0.33

O2 consumption index: 100-180ml/min/m2

02 delivery index: 520-720ml/min/m2