IV (systematic review of level IV studies).

Level III.

The presence of viremia in individuals with HIV is independently associated with impaired DL. Suppression of VL may allow for recovery in diffusing capacity over time, though the degree to which this occurs requires further investigation.

No abstract

A 52-year-old man presented with acute onset of chest pain and was found to have an inferolateral ST-segment elevation myocardial infarction and acute mitral regurgitation due to papillary muscle rupture. This case describes a rare, potentially fatal mechanical complication of acute myocardial infarction. ( Level of Difficulty: Beginner. )