Submitted by Dr LAU Chun Wing Arthur, ICU, PYNEH, Hong Kong, on 2 June 2009
In using the classic shunt equation (Qs/Qt=(Cc’O2 – CaO2)/ (Cc’O2 – CvO2) for the calculation of the shunt fraction, the following information or knowledge is necessary, except:
A. Alveolar gas equation
B. A pulmonary artery catheter to obtain mixed venous blood
C. Oxygen content equation
D. Bohr equation
Answer: D
The Bohr equation is concerned with the calculation of physiological dead space.
References
1. Shunt equation
2. Shunt and dead space
3. Classic shunt equation
To see the details of the above diagram, go here.