USMLE Forum Archives - USMLE Step 3 - PFT. Q4
PFT. Q4
zkadhem - 05-21-09 12:27
Q.4. A 52-year-old man who has never smoked has been confined to bed for the
past year because of massive obesity (BMI = 48). He has hypoxemia secondary to
hypoventilation and has peripheral edema suggesting cor pulmonale. Which of the
following sets of lung volumes are most likely present?
A. TLC 110% predicted, FRC 120% predicted, RV 160% predicted
B. TLC 85% predicted, FRC 62% predicted, RV 94% predicted
C. TLC 60% predicted, FRC 65% predicted, RV 58% predicted
D. TLC 120% predicted, FRC 80% predicted, RV 60% predicted
E. TLC 100 % predicted, FRC 98% predicted, RV 105% predicted
zkadhem - 05-21-09 12:27
Q.4. A 52-year-old man who has never smoked has been confined to bed for the
past year because of massive obesity (BMI = 48). He has hypoxemia secondary to
hypoventilation and has peripheral edema suggesting cor pulmonale. Which of the
following sets of lung volumes are most likely present?
A. TLC 110% predicted, FRC 120% predicted, RV 160% predicted
B. TLC 85% predicted, FRC 62% predicted, RV 94% predicted
C. TLC 60% predicted, FRC 65% predicted, RV 58% predicted
D. TLC 120% predicted, FRC 80% predicted, RV 60% predicted
E. TLC 100 % predicted, FRC 98% predicted, RV 105% predicted
The correct answer and explanation will be available after you answer.
Page 1
#2
Re: PFT. Q4 meduploader - 05-21-09 14:40 My answer is: b.
TLC 85% predicted, FRC 62% predicted, RV 94% predicted
#12
Re: PFT. Q4 babbu5508 - 09-30-10 13:43 My answer is: c.
TLC 60% predicted, FRC 65% predicted, RV 58% predicted..restrictive pattern due too the severe obesity decreasing chest movements...
Page 1