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Original Article
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Volume 348:5-14 January 2, 2003 Number 1
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A Randomized, Controlled Trial of the Use of Pulmonary-Artery Catheters in High-Risk Surgical Patients
James Dean Sandham, M.D., Russell Douglas Hull, M.B., B.S., Rollin Frederick Brant, Ph.D., Linda Knox, R.N., Graham Frederick Pineo, M.D., Christopher J. Doig, M.D., Denny P. Laporta, M.D., Sidney Viner, M.D., Louise Passerini, M.D., Hugh Devitt, M.D., Ann Kirby, M.D., Michael Jacka, M.D., for the Canadian Critical Care Clinical Trials Group

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ABSTRACT

Background Some observational studies suggest that the use of pulmonary-artery catheters to guide therapy is associated with increased mortality.

Methods We performed a randomized trial comparing goal-directed therapy guided by a pulmonary-artery catheter with standard care without the use of a pulmonary-artery catheter. The subjects were high-risk patients 60 years of age or older, with American Society of Anesthesiologists (ASA) class III or IV risk, who were scheduled for urgent or elective major surgery, followed by a stay in an intensive care unit. Outcomes were adjudicated by observers who were unaware of the treatment-group assignments. The primary outcome was in-hospital mortality from any cause.

Results Of 3803 eligible patients, 1994 (52.4 percent) underwent randomization. The base-line characteristics of the two treatment groups were similar. A total of 77 of 997 patients who underwent surgery without the use of a pulmonary-artery catheter (7.7 percent) died in the hospital, as compared with 78 of 997 patients in whom a pulmonary-artery catheter was used (7.8 percent) — a difference of 0.1 percentage point (95 percent confidence interval, –2.3 to 2.5). There was a higher rate of pulmonary embolism in the catheter group than in the standard-care group (8 events vs. 0 events, P=0.004). The survival rates at 6 months among patients in the standard-care and catheter groups were 88.1 and 87.4 percent, respectively (difference, –0.7 percentage point [95 percent confidence interval, –3.6 to 2.2]; negative survival differences favor standard care); at 12 months, the rates were 83.9 and 83.0 percent, respectively (difference, –0.9 percentage point [95 percent confidence interval, –4.3 to 2.4]). The median hospital stay was 10 days in each group.

Conclusions We found no benefit to therapy directed by pulmonary-artery catheter over standard care in elderly, high-risk surgical patients requiring intensive care.


Source Information

From the Faculty of Medicine, University of Calgary, Calgary, Alta. (J.D.S., R.D.H., R.F.B., L.K., G.F.P., C.J.D., S.V., A.K.); the Sir Mortimer B. Davis Jewish General Hospital, Montreal (D.P.L.); the Faculty of Medicine, University of Montreal, Montreal (L.P.); the Faculty of Medicine, Dalhousie University, Halifax, N.S. (H.D.); and the University of Alberta, Edmonton (M.J.) — all in Canada.

Address reprint requests to Dr. Sandham at the Department of Critical Care Medicine, EG23 Foothills St. NW, Calgary, AB T2N 2T9, Canada, or at sandham{at}ucalgary.ca.

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Related Letters:

Pulmonary-Artery Catheters in High-Risk Surgical Patients
Cholley B. P., Payen D., Karkouti K., Wijeysundera D. N., Beattie S. W., Schwann N. M., Mangano D. T., the Multicenter Study of Perioperative Ischemia Research Group , Sandham J. D., Hull R. D., Brant R. F.
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N Engl J Med 2003; 348:2035-2037, May 15, 2003. Correspondence

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