Cited by 143Cardiac Valve Diseases and TreatmentsAortic Disease and Treatment ApproachesCardiac and Coronary Surgery Techniques

Predictors of low cardiac output syndrome after isolated aortic valve surgery

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Maganti, Manjula D., Rao, Vivek, Borger, Michael A., Ivanov, Joan, David, Tirone E.·2005·Circulation

Abstract

BACKGROUND: Low cardiac output syndrome (LCOS), defined as the need for postoperative intraaortic balloon pump or inotropic support for >30 minutes in the intensive care unit, remains a relatively common complication of aortic valve (AV) surgery. The aim of this study is to identify the preoperative predictors of LCOS in patients undergoing isolated AV surgery. METHODS AND RESULTS: We conducted a retrospective review of data prospectively entered into an institutional database. Between 1990 and 2003, 2255 patients underwent isolated AV surgery with no other concomitant cardiac surgery. The independent predictors of LCOS and operative mortality (OM) were determined by stepwise logistic regression analysis. The overall prevalence of LCOS was 3.9%. The independent predictors of LCOS were (odds ratio in parentheses) renal failure (5.0), earlier year of operation (4.4), left ventricular ejection fraction <40% (3.6), shock (3.2), female gender (2.8), and increasing age (1.02). Overall OM was 2.9%. The OM was higher in patients who experienced LCOS (38% versus 1.5%; P<0.001). The independent predictors of mortality were (odds ratio in parentheses) preoperative renal failure (8.3), urgency of surgery (3.4), previous stroke (2.9), congestive heart failure (2.6), previous cardiac surgery (2.3), hypertension (1.7), and small AV size (1.3). CONCLUSIONS: Low-output syndrome is associated with significantly increased morbidity and mortality. Novel strategies to preserve renal function, optimization of preexisting heart failure symptoms, and avoidance of prosthesis-patient mismatch may reduce the incidence of LCOS and lead to improved results after AV surgery.

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Crossref · 10.1161/circulationaha.104.526087

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Research works printed but not linked: 2

  1. Rao V, Christakis GT, Weisel RD, Buth KJ, Ikonomidis JS, Shirai T, Cohen G, David TE. Changing pattern of valve surgery. Circu- lation. 1996;94:113-120.
  2. Hosmer DW, Lemeshow S. Applied logistic regression. New York: John Wiley and Sons; 1989.

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Authors
Maganti, M. D., Rao, V., Borger, M. A., Ivanov, J., & David, T. E.
Affiliations
University of Toronto (CA)
Venue
Circulation
Published
2005-08-30
Volume
112
Issue
9_supplement
Pages
I448-52
ISSN
  • 0009-7322 (ISSN-L)
  • 1524-4539
OpenAlex
W1495427827
Cited by
143
References
22
Citations by year
2026: 4 · 2025: 3 · 2024: 4 · 2023: 19 · 2022: 8 · 2021: 5 · 2020: 12 · 2019: 11 · 2018: 3 · 2017: 8 · 2016: 3 · 2015: 7 · 2014: 9 · 2013: 7 · 2012: 9
FWCI
2.05
Type
journal article
Language
en
Open access
Locations
  • Circulation (publishedVersion)
  • PubMed (publishedVersion)
Funders
Heart and Stroke Foundation of Canada
Topics
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiac Valve Diseases and Treatments
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Aortic Disease and Treatment Approaches
  • Health Sciences › Medicine › Surgery › Cardiac and Coronary Surgery Techniques
Keywords
low cardiac output syndrome, aortic valve surgery, isolated aortic valve replacement, postoperative complications, postoperative mortality, preoperative risk factors, renal failure, left ventricular ejection fraction, shock, prosthesis-patient mismatch, heart failure, intra-aortic balloon pump, inotropic support
MeSH terms
Aged, Aortic Valve, Cardiac Output, Low, Cardiotonic Agents, Critical Care, Female, Humans, Intra-Aortic Balloon Pumping, Kidney Failure, Chronic, Length of Stay, Male, Middle Aged, Postoperative Complications, Prospective Studies, Retrospective Studies, Risk Factors, Stroke Volume, Prevalence, Odds Ratio, Databases, Factual, Treatment Outcome

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