title: Ultrasonography and lung mechanics can diagnose diaphragmatic paralysis quickly.
abstract: Diaphragmatic paralysis after cardiovascular surgery requires early diagnosis prior to extubation. The effectiveness of ultrasonography and a lung mechanics assessment was evaluated. Paralysis of the diaphragm was diagnosed when the diaphragm failed to move or moved in a cephalad direction during inspiration. It was diagnosed in 3 of 40 patients (7.5%) who underwent cardiovascular surgery from 1998 to 1999. Patients were extubated when all parameters met the extubation criteria, irrespective of the presence or absence of diaphragmatic paralysis. One patient required prolonged assisted ventilation and died from mediastinitis on the 35th postoperative day. The other 2 patients required assisted ventilation for an additional 1-3 days. Ultrasonography and a lung mechanics assessment are effective tools for the early diagnosis of diaphragmatic paralysis and assessment of respiratory function after cardiovascular surgery.
authors.affiliation: First Department of Surgery, Yokohama City University School of Medicine, 3-9 Fuku-ura, Kanazawa-ku, Yokohama 236-0004, Japan. manaberu@aol.com
authors.forename: Takahiro
authors.initials: T
authors.lastname: Manabe
authors.forename: Masahide
authors.initials: M
authors.lastname: Ohtsuka
authors.forename: Yutaka
authors.initials: Y
authors.lastname: Usuda
authors.forename: Kiyotaka
authors.initials: K
authors.lastname: Imoto
authors.forename: Michio
authors.initials: M
authors.lastname: Tobe
authors.forename: Yoshinori
authors.initials: Y
authors.lastname: Takanashi
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D013504:Cardiovascular Surgical Procedures / Q000009:adverse effects*; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012129:Respiratory Function Tests / Q000379:methods; D012133:Respiratory Paralysis / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000209:etiology / Q000503:physiopathology*; D014463:Ultrasonography