title: At either end of the tube.
authors.affiliation: Royal Infirmary of Edinburgh, Edinburgh EH16 4SA, UK. Barryschyma@hotmail.com
authors.forename: Barry M
authors.initials: BM
authors.lastname: Schyma
authors.forename: Robin
authors.initials: R
authors.lastname: Kerr
authors.forename: Shirjel
authors.initials: S
authors.lastname: Alam
mesh_terms: D000328:Adult; D000739:Anecdotes as Topic; D006348:Cardiac Surgical Procedures / Q000009:adverse effects / Q000523:psychology*; D003693:Delirium / Q000209:etiology; D004696:Endocarditis / Q000150:complications* / Q000175:diagnosis; D006801:Humans; D008297:Male; D008505:Medical Staff, Hospital; D008944:Mitral Valve Insufficiency / Q000209:etiology / Q000601:surgery*; D010820:Physicians / Q000523:psychology; D011184:Postoperative Period