title: Spirometry, blood gas analysis and ultrasonography of the diaphragm after Winnie's interscalene brachial plexus block.
abstract: Ten patients with healthy lungs were subjected to radiology, sonography, spirometry and blood gas analysis before and after an interscalene brachial plexus block prior to shoulder surgery. Winnie's interscalene block induced ipsilateral hemidiaphragmatic paresis that was confirmed by radiology and sonography. Changes in forced expiratory vital capacity (FVC), forced expiratory volume (FEV1) and peak expiratory flow rate (PEFR) were significant and PaO2 declined by an average of 1.3 kPa. These changes should not cause further clinical symptoms in sitting patients with unaffected lungs. In patients with pulmonary disease, this method of nerve block should be limited to cases for which there is a clear indication.
authors.affiliation: Department of Anaesthesia, University of Innsbruck, Anichstrasse 35, A-6020 Innsbruck, Austria.
authors.forename: M
authors.initials: M
authors.lastname: Gottardis
authors.forename: T
authors.initials: T
authors.lastname: Luger
authors.forename: C
authors.initials: C
authors.lastname: Flörl
authors.forename: G
authors.initials: G
authors.lastname: Schön
authors.forename: T
authors.initials: T
authors.lastname: Penz
authors.forename: H
authors.initials: H
authors.lastname: Resch
authors.forename: A
authors.initials: A
authors.lastname: Benzer
mesh_terms: D000328:Adult; D001784:Blood Gas Analysis; D001917:Brachial Plexus; D002245:Carbon Dioxide / Q000097:blood*; D003964:Diaphragm / Q000000981:diagnostic imaging / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009407:Nerve Block; D019637:Orthopedic Procedures; D010100:Oxygen / Q000097:blood*; D012129:Respiratory Function Tests; D015656:Respiratory Mechanics / Q000187:drug effects*; D012782:Shoulder / Q000601:surgery; D013147:Spirometry; D014463:Ultrasonography
chemical_list: D002245:Carbon Dioxide; D010100:Oxygen