title: Best evidence topic reports. BET 4: Does it matter whether a chest drain is aimed upwards or downwards for the optimum drainage of fluid or air from the pleural cavity?
mesh_terms: D004322:Drainage / Q000295:instrumentation / Q000379:methods*; D004417:Dyspnea / Q000209:etiology; D019317:Evidence-Based Medicine; D006801:Humans; D010996:Pleural Effusion / Q000150:complications / Q000628:therapy*