What method of chest tube removal has been associated with the lowest level of pneumothorax recurrence?
a. Clamp the chest tube for 4 hr; if chest ra-diograph is good, remove the tube.
b. Clamp chest tube for 24 hr; if clinically stable, remove the tube.
c. Remove the chest tube as soon as the air leak resolves.
d. Remove the chest tube 48 hr after the air leak resolves.
ANS: D
The recurrence rate is near zero when chest tubes are removed 48 hr after the air leak no longer is seen in the water-seal chamber.
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This organ gets smaller with age and may even disappear in adults
A) thymus B) tonsils C) spleen D) adenoids
How can pregnancy cause a woman to make an antibody to a red blood cell antigen?
a. Fetal cells carrying an antigen inherited from the mother and foreign to the father cross the placenta b. Fetal cells carrying an antigen inherited from the father and foreign to the mother cross the placenta c. Fetal cells carrying a homozygous dose of an antigen cross the placenta d. Fetal cells carrying a heterozygous dose of an antigen cross the placenta