Table 2

CTA, MPI findings: univariable and multivariate analysis for cardiac events

Cardiac events (n=27)No events (n=177)Annual event rate (%)Unadjusted HR (95% CI)p ValueAdjusted HR (95% CI)p Value
UCT=08 (6.5%)115 (93.5%)2.8211
UCT≥119 (23.5%)62 (76.5%)8.273.07 (1.38 to 7.49)0.00542.34* (1.01 to 5.89)0.0465
SSS<44 (3.8%)101 (96.2%)1.4411
SSS≥423 (23.2%)76 76.8%)9.676.73 (2.59 to 22.96)<0.00013.36† (1.18 to 12.12)0.0217
  • *HR was adjusted for LVEF, time since CABG, EuroSCORE II and SSS.

  • †HR was adjusted for LVEF, time since CABG, EuroSCORE II and UCT. Eight events in patients with UCT=0 included three non-fatal MI and five HF, 19 events in UCT≥1 included three cardiac deaths, six non-fatal MIs, three late revascularisations and seven HFs. Four events in patients with SSS<4 included three non-fatal MIs and one late revascularisation, 23 events in SSS≥4 included three cardiac deaths, six non-fatal MIs, two late revascularisations and 12 HFs.

  • CABG, coronary-artery-bypass grafting; CTA, CT angiography; EuroSCORE II, European System for Cardiac Operative Risk Evaluation risk model; HF, heart failure; LVEF, left ventricular ejection fraction; MPI, myocardial perfusion imaging; SSS, summed stress score; UCT, unprotected coronary territory.