This Article Full Text Full Text (PDF) CME: Take the course for this article: Circulation: February 19, 2008, Volume 117, Number 7 All Versions of this Article: 117/7/876    most recent CIRCULATIONAHA.107.728147v1 Alert me when this article is cited Alert me if a correction is posted Citation Map Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Request Permissions Citing Articles Citing Articles via HighWire Google Scholar Articles by Mehta, R. H. PubMed PubMed Citation Articles by Mehta, R. H. Related Collections CV surgery: coronary artery disease Related Article

(Circulation. 2008;117:876-885.)
© 2008 American Heart Association, Inc.

Cardiovascular Surgery

Clinical Characteristics and In-Hospital Outcomes of Patients With Cardiogenic Shock Undergoing Coronary Artery Bypass Surgery

Insights From the Society of Thoracic Surgeons National Cardiac Database

Rajendra H. Mehta, MD, MS; Joshua D. Grab, MS; Sean M. O’Brien, PhD; Donald D. Glower, MD; Constance K. Haan, MD, MS; James S. Gammie, MD; Eric D. Peterson, MD, MPH, on Behalf of the Society of Thoracic Surgeons National Cardiac Database Investigators

From the Duke Clinical Research Institute (R.H.M., J.D.G., S.M.O., E.D.P.) and Duke University Medical Center (R.H.M., D.D.G., E.D.P.), Durham, NC; University of Florida (C.K.H.), Jacksonville; and University of Maryland (J.S.G.), Baltimore.

Correspondence to Rajendra H. Mehta, MD, Box 17969, Duke Clinical Research Institute, Durham, NC 27715. E-mail mehta007{at}dcri.duke.edu

Received July 21, 2007; accepted December 7, 2007.

Background— There exist few studies that characterize contemporary clinical features and outcomes or risk factors for operative mortality in cardiogenic shock (CS) patients undergoing coronary artery bypass grafting (CABG).

Methods and Results— We evaluated data of 708 593 patients with and without CS undergoing CABG enrolled in the Society of Thoracic Surgeons National Cardiac Database (2002–2005). Clinical, angiographic, and operative features and in-hospital outcomes were evaluated in patients with and without CS. Logistic regression was used to identify predictors of operative mortality and to estimate weights for an additive risk score. Patients with preoperative CS constituted 14 956 (2.1%) of patients undergoing CABG yet accounted for 14% of all CABG deaths. Operative mortality in CS patients was high and surgery specific, rising from 20% for isolated CABG to 33% for CABG plus valve surgery and 58% for CABG plus ventricular septal repair. Although mortality for CABG surgery overall declined significantly over time (P for trend <0.0001), mortality for CS patients undergoing CABG did not change significantly during the 4-year study period (P=0.07). Factors associated with higher death risk for CS patients undergoing CABG were identified by multivariable analysis and summarized into a simple bedside risk score (c statistic=0.74) that accurately stratified those with low (<10%) to very high (>60%) mortality risk.

Conclusions— Patients with CS represent a minority of those undergoing CABG yet have persistently high operative risks, accounting for 14% of deaths in CABG patients. Estimation of patient-specific risk of mortality is feasible with the simplified additive risk tool developed in our study with the use of routinely available preprocedural data.

---

 

CLINICAL PERSPECTIVE

Related Article:

Clinical Summaries
Circulation 2008 117: 857-859. [Full Text]

This article has been cited by other articles:

				MEND-CABG II Investigators* Efficacy and Safety of Pyridoxal 5'-Phosphate (MC-1) in High-Risk Patients Undergoing Coronary Artery Bypass Graft Surgery: The MEND-CABG II Randomized Clinical Trial JAMA, April 16, 2008; 299(15): 1777 - 1787. [Abstract] [Full Text] [PDF]