Related Experiment Video
Updated: May 12, 2026
Surgical Swine Model of Chronic Cardiac Ischemia Treated by Off-Pump Coronary Artery Bypass Graft Surgery
Published on: March 27, 2018
Predictors of readmission for complications of coronary artery bypass graft surgery
Edward L Hannan1, Michael J Racz, Gary Walford
1Department of Health Policy, Management, and Behavior, School of Public Health, University at Albany, State University of New York, Albany 12144-3456, USA. elh03@health.state.ny.us
Insights
Coronary artery bypass graft (CABG) readmissions within 30 days are common, often due to infection or heart failure. Older age, comorbidities, and specific provider factors increase this risk.
Area of Science:
- Cardiovascular Surgery
- Health Services Research
Background:
- Perioperative mortality after coronary artery bypass graft (CABG) surgery is well-studied.
- Factors influencing early readmissions post-CABG remain less clear.
Purpose of the Study:
- To identify significant predictors of 30-day readmission following CABG surgery.
- To understand the causes and associated risk factors for early CABG readmissions.
Main Methods:
- A retrospective analysis of 16,325 patients undergoing CABG in New York from 1999-2000.
- Investigated patient demographics, preoperative risk factors, complications, operative/postoperative factors, and provider characteristics.
- Examined causes for readmission within 30 days of discharge.
Main Results:
- 12.9% of patients were readmitted within 30 days post-CABG.
- Most common readmission causes were postsurgical infection (28%) and heart failure (16%).
- Eleven risk factors, including older age, female sex, African American race, greater body surface area, recent myocardial infarction, and six comorbidities, were associated with higher readmission rates. Provider characteristics (low surgeon volume, high hospital mortality rate) and postoperative factors (discharge to facility, prolonged length of stay) also predicted readmission.
Conclusions:
- Thirty-day readmission is a significant adverse outcome after CABG.
- Readmission rates can potentially supplement mortality data in assessing provider quality.
Context:
Risk factors for perioperative mortality after coronary artery bypass graft (CABG) surgery have been extensively studied. However, which factors are associated with early readmissions following CABG surgery are less clear.
Objective:
To identify significant predictors of readmission within 30 days following CABG surgery.
Design, Setting, And Patients:
Causes for readmission within 30 days were investigated for all patients discharged after CABG surgery in the state of New York from January 1, 1999, through December 31, 1999. A variety of patient demographics, preoperative risk factors, complications, operative and postoperative factors, and provider characteristics were considered as potential predictors of readmissions.
Main Outcome Measure:
Hospital readmissions within 30 days of discharge following CABG surgery.
Results:
Of 16 325 total patients, 2111 (12.9%) were readmitted within 30 days for reasons related to CABG surgery. The most common causes of readmission were postsurgical infection (n = 598 [28%]) and heart failure (n = 331 [16%]). Eleven risk factors were found to be independently associated with higher readmission rates: older age, female sex, African American race, greater body surface area, previous myocardial infarction within 1 week, and 6 comorbidities. After controlling for these preoperative patient-level risk factors, 2 provider characteristics (annual surgeon CABG volume <100, hospital risk-adjusted mortality rate in the highest decile) and 2 postoperative factors (discharge to nursing home or rehabilitation/acute care facility, length of stay during index CABG admission of > or =5 days) were also related to higher readmission rates.
Conclusions:
Readmission within 30 days following discharge is an important adverse outcome of CABG surgery. Continued attempts should be made to explore the potential of readmission as a supplement to mortality in assessing provider quality.
More Related Videos
10:03Coronary Progenitor Cells and Soluble Biomarkers in Cardiovascular Prognosis after Coronary Angioplasty
Published on: January 28, 2020
05:16Cutoff Value of Phase Angle by Bioelectrical Impedance Analysis at Admission as a Prognostic Factor in Patients with Acute Heart Failure
Published on: June 10, 2025
Related Concept Videos
01:28Cardiac Catheterization I: Pre-Procedure Overview
01:27Coronary Artery Disease V: Interprofessional Care
01:30Acute Coronary Syndrome III: Diagnostic Studies
01:28Acute Coronary Syndrome IV: Interprofessional Care
01:28Cardiomyopathy VII: Pre and Post Operative Nursing Management
01:23Peripheral Artery Disease V: Postoperative Nursing Management