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(Chest. 1994;106:391-395.)
© 1994 American College of Chest Physicians

Stacked Inspiratory Spirometry Reduces Pulmonary Shunt in Patients After Coronary Artery Bypass

David Strider R.N., M.S.N.1; Doug Turner R.N., M.S.N.1; Mary Beth Egloff R.N., M.S.N.1; Suzanne M. Burns R.N., M.S.N., R.R.T.1; and Jonathon D. Truwit M.D., F.C.C.P.1

1 From the University of Virginia Health Sciences Center, Charlottesville

Atelectasis is a major factor in postoperative morbidity for patients undergoing cardiopulmonary surgery. We evaluated the effectiveness of stacked inspiratory spirometry (STIS) in 17 patients status postcoronary artery bypass graft in a nonrandomized fashion. We measured pulmonary shunt as an endpoint, and compared the magnitudes before and after the STIS maneuver. Our results showed an 8.66 percent reduction in pulmonary shunt (p<0.05). The reduction in shunt was modest; however, repetitive maneuvers might result in greater improvement.

Key Words: atelectasis • incentive spirometry • postoperative • pulmonary shunt

Submitted on August 20, 1993
Accepted on January 12, 1994






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Copyright © 1994 by the American College of Chest Physicians.