title: Quiz of the month.
authors.forename: S H
authors.initials: SH
authors.lastname: Norris
mesh_terms: D000137:Acid-Base Imbalance / Q000150:complications / Q000175:diagnosis*; D000368:Aged; D006333:Heart Failure / Q000150:complications; D006801:Humans; D008297:Male; D011656:Pulmonary Emphysema / Q000150:complications