1. In the explosive phase of a cough

[Editor]

a. Inraplueral pressure may rise to 50 mm Hg
b. There is a decrease in cerebral perfusion pressure.
c. There is a decrease in venous return
d. There is a narrowing of the airways
e. There is contraction of the diaphragm

mark wrote:

a. Inraplueral pressure may rise to 50 mm Hg
T sounds reasonable
b. There is a decrease in cerebral perfusion pressure.
F CPP=MAP-ICP, therefire it will inc.
c. There is a decrease in venous return
t due to increased intrathoracic P
d. There is a narrowing of the airways
F , why?
e. There is contraction of the diaphragm
?, the diaphragm rises passively but in an explosive cough is thta process active ?F

[jijindr]

CCP= MAP-(ICP+JVP).
JVP will increase during cough, so CPP will fall slightly.