title: Diagnostic Accuracy of Computed Tomography Angiography as Compared to Conventional Angiography in Patients Undergoing Noncoronary Cardiac Surgery.
abstract: OBJECTIVE
  To compare the diagnostic accuracy of multi-slice computed tomography (MSCT) angiography with conventional angiography in patients undergoing major noncoronary cardiac surgeries.
  
  
  METHODS
  We studied fifty major noncoronary cardiac surgery patients scheduled for invasive coronary angiography, 29 (58%) female and 21 (42%) male. Inclusion criteria of the study were age of the patients ≥40 years, having low or intermediate probability of coronary artery disease (CAD), left ventricular ejection fraction (LVEF) >35%, and patient giving informed consent for undergoing MSCT and conventional coronary angiography. The patients with LVEF <35%, high pretest probability of CAD, and hemodynamically unstable were excluded from the study.
  
  
  RESULTS
  The diagnostic accuracy of CT coronary angiography was evaluated regarding true positive, true negative values. The overall sensitivity and specificity of CT angiography technique was 100% (95% confidence interval [CI]: 39.76%-100%) and 91.30% (95% CI: 79.21%-97.58%). The positive (50%; 95% CI: 15.70%-84.30%) and negative predictive values (100%; 95% CI: 91.59%-100%) of CT angiography were also fairly high in these patients.
  
  
  CONCLUSIONS
  Our study suggests that this non-invasive technique may improve perioperative risk stratification in patients undegoing non-cardiac surgery.
authors.affiliation: Department of Cardiology, U. N. Mehta Institute of Cardiology and Research Centre, Ahmedabad, Gujarat, India.
authors.forename: Hasit
authors.initials: H
authors.lastname: Joshi
authors.affiliation: Department of Cardiology, U. N. Mehta Institute of Cardiology and Research Centre, Ahmedabad, Gujarat, India.
authors.forename: Ronak
authors.initials: R
authors.lastname: Shah
authors.affiliation: Department of Cardiology, U. N. Mehta Institute of Cardiology and Research Centre, Ahmedabad, Gujarat, India.
authors.forename: Jayesh
authors.initials: J
authors.lastname: Prajapati
authors.affiliation: Department of Cardiology, U. N. Mehta Institute of Cardiology and Research Centre, Ahmedabad, Gujarat, India.
authors.forename: Vipin
authors.initials: V
authors.lastname: Bhangdiya
authors.affiliation: Department of Cardiology, U. N. Mehta Institute of Cardiology and Research Centre, Ahmedabad, Gujarat, India.
authors.forename: Jayal
authors.initials: J
authors.lastname: Shah
authors.affiliation: Department of Research, U. N. Mehta Institute of Cardiology and Research Centre, Ahmedabad, Gujarat, India.
authors.forename: Yogini
authors.initials: Y
authors.lastname: Kandre
authors.affiliation: Department of Research, U. N. Mehta Institute of Cardiology and Research Centre, Ahmedabad, Gujarat, India.
authors.forename: Komal
authors.initials: K
authors.lastname: Shah
keywords: Computed tomography angiography; conventional angiography; major noncoronary cardiac surgery