What is the best measure of the efficiency of gas exchange in the lung?
a. PaCO2
b. VDS/VT
c. End-tidal PCO2
d. PaCO2/PETCO2
ANS: B
The dead space-tidal volume ratio (VD/VT) is a measure of the efficiency of gas exchange.
Health Professions
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The CORRECT sequence of steps for an arteriotomy for embolectomy or thrombectomy is:
a. #15 blade, Metzenbaum scissors, Yankauer suction, insertion of Fogarty catheter b. #10 blade, Metzenbaum scissors, insertion of Fogarty catheter c. #11 blade, Potts-Smith scissors, insertion of Fogarty catheter d. #12 blade, 14 g angiocath insertion, removal of stylet, insertion of Fogarty catheter
Health Professions