First Report on 30-day and Operative Mortality in Risk Model of Isolated Coronary Artery Bypass Grafting in Japan

Noboru Motomura, Hiroaki Miyata, Hiroyuki Tsukihara, Masafumi Okada, Shinichi Takamoto

Research output: Contribution to journalArticle

47 Citations (Scopus)

Abstract

Background: Risk models of coronary artery bypass grafting (CABG) using a large database are useful for improving surgical quality. To obtain accurate, high-quality assessments of the surgical outcomes, each country should maintain its own database. This study was conducted to collect Japanese data and prepare a risk stratification of isolated CABG procedures using the Japan Adult Cardiovascular Surgery Database (JACVSD). Methods: We analyzed 7133 CABG-only records from 97 participating sites throughout Japan using a data entry form with 255 variables that was sent to the JACVSD office by our Web-based data collection system. The statistical model was constructed by multiple logistic regression. Model discrimination was tested using the area under the receiver operating characteristic curve (C index). Model calibration was tested by the Hosmer-Lemeshow test. Results: Of 7133 operations, 47.2% had diabetes mellitus, 14.0% were urgent, and 15.6% involved peripheral vascular disease. The observed 30-day and operative mortality rates were 2.02% and 2.72%, respectively. Significant variables with high odds ratios included emergency or salvage status (3.71), preoperative creatinine value exceeding 3.0 mg/dL (3.59), aortic valve stenosis (3.01), and moderate to severe chronic lung disease (2.86). Hosmer-Lemeshow test and C-index values for 30-day mortality were satisfactory at 0.96 and 0.85, respectively. Conclusions: The results obtained in Japan were at least as good as those reported elsewhere. The performance of our risk model also matched those of the Society of Thoracic Surgeons National Adult Cardiac Database and the European Society Database.

Original languageEnglish
Pages (from-to)1866-1872
Number of pages7
JournalAnnals of Thoracic Surgery
Volume86
Issue number6
DOIs
Publication statusPublished - 2008 Dec
Externally publishedYes

Fingerprint

Coronary Artery Bypass
Japan
Databases
Mortality
Peripheral Vascular Diseases
Aortic Valve Stenosis
Statistical Models
Ambulatory Surgical Procedures
Information Systems
ROC Curve
Calibration
Lung Diseases
Creatinine
Diabetes Mellitus
Emergencies
Chronic Disease
Logistic Models
Odds Ratio
Outcome Assessment (Health Care)

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine
  • Surgery
  • Pulmonary and Respiratory Medicine

Cite this

First Report on 30-day and Operative Mortality in Risk Model of Isolated Coronary Artery Bypass Grafting in Japan. / Motomura, Noboru; Miyata, Hiroaki; Tsukihara, Hiroyuki; Okada, Masafumi; Takamoto, Shinichi.

In: Annals of Thoracic Surgery, Vol. 86, No. 6, 12.2008, p. 1866-1872.

Research output: Contribution to journalArticle

Motomura, Noboru ; Miyata, Hiroaki ; Tsukihara, Hiroyuki ; Okada, Masafumi ; Takamoto, Shinichi. / First Report on 30-day and Operative Mortality in Risk Model of Isolated Coronary Artery Bypass Grafting in Japan. In: Annals of Thoracic Surgery. 2008 ; Vol. 86, No. 6. pp. 1866-1872.
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