title: Bedside analysis of arterial blood gases and electrolytes during and after cardiac surgery.
abstract: Intraoperative changes in arterial blood gas tensions and serum electrolyte concentrations may contribute to the development of arrhythmias and cardiovascular insufficiency. Rapid intraoperative assessment of these parameters may improve patient care by permitting earlier treatment of abnormalities. We evaluated a portable blood gas and electrolyte analyzer in six patients undergoing coronary artery bypass surgery. Evaluation by anesthesia personnel took place in the operating room. The analyzer produced rapid, accurate, and reliable data that were comparable to clinical laboratory data. Correlation coefficients between the analyzer and laboratory determinations for PaO2, PaCO2, pH, K+, Ca++, and hematocrit were all greater than 0.92. Large changes in circulating ionized calcium (18%) and potassium (38%) concentrations were noted during cardiac surgery. Bedside blood gas and electrolyte analyzers represent a new technology worthy of further evaluation.
authors.affiliation: Department of Anesthesia, Bowman Gray School of Medicine, Winston-Salem, NC 27103.
authors.forename: R A
authors.initials: RA
authors.lastname: Strickland
authors.forename: T R
authors.initials: TR
authors.lastname: Hill
authors.forename: G P
authors.initials: GP
authors.lastname: Zaloga
mesh_terms: D001784:Blood Gas Analysis / Q000295:instrumentation*; D006348:Cardiac Surgical Procedures; D004573:Electrolytes / Q000097:blood*; D005069:Evaluation Studies as Topic; D006801:Humans; D008991:Monitoring, Physiologic / Q000295:instrumentation*
chemical_list: D004573:Electrolytes