Journal
JOURNAL OF HOSPITAL MEDICINE
Volume 9, Issue 5, Pages 289-296Publisher
FRONTLINE MEDICAL COMMUNICATIONS
DOI: 10.1002/jhm.2182
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Funding
- Northern California Institute for Research and Education
- Veterans Affairs Medical Center, San Francisco, California
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BACKGROUNDAngiotensin-converting enzyme inhibitors (ACE-Is) are a widely used class of cardiovascular medication. However, limited data exist on the risks of postoperative nonresumption of an ACE-I. OBJECTIVETo evaluate the factors and 30-day mortality risks associated with the postoperative nonresumption of an ACE-I. DESIGNA retrospective cohort study. SETTINGVeterans Affairs (VA) Healthcare System. PATIENTSA total of 294,505 admissions in 240,978 patients with multiple preoperative prescription refills (>3) for an ACE-I who underwent inpatient surgery from calendar years 1999 to 2012. INTERVENTIONNone. MEASUREMENTSWe classified surgical admissions based upon the timing of postoperative resumption of an ACE-I prescription from the day of surgery through postoperative days 0 to 14 and 15 to 30, and collected 30-day mortality data. We evaluated the relationship between 30-day mortality and the nonresumption of an ACE-I from postoperative day 0 to 14 using proportional hazard regression models, adjusting for patient- and hospital-level risk factors. Sensitivity analyses were conducted using more homogeneous subpopulations and propensity score models. RESULTSTwenty-five percent of our cohort did not resume an ACE-I during the 14 days following surgery. Nonresumption of an ACE-I within postoperative day 0 to 14 was independently associated with increased 30-day mortality (hazard ratio: 3.44; 95% confidence interval: 3.30-3.60; P<0.001) compared to the restart group. Sensitivity analyses maintained this relationship. CONCLUSIONSNonresumption of an ACE-I is common after major inpatient surgery in the large VA Health Care System. Restarting of an ACE-I within postoperative day 0 to 14 is, however, associated with decreased 30-day mortality. Careful attention to the issue of timely reinstitution of chronic medications such as an ACE-I is indicated. Journal of Hospital Medicine 2014;9:289-296. 2014 Society of Hospital Medicine
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