Dual-source CTCA demonstrated high diagnostic accuracy for coronary stenoses compared to catheter angiography, with 96.6% sensitivity and 86.8% specificity, irrespective of heart rate.
Observational (n=150)
Does dual-source CTCA provide high diagnostic accuracy for coronary stenoses compared to CCA across different BMI, Agatston score, and heart rate subgroups?
Dual-source CTCA provides high diagnostic accuracy for ruling out coronary artery stenoses, maintaining high sensitivity and negative predictive value even in patients with high heart rates, BMI, or calcium scores.
AIMS: To prospectively investigate the diagnostic accuracy of dual-source computed tomography coronary angiography (CTCA) to diagnose coronary stenoses in relation to body mass index (BMI), Agatston score (AS), and heart rate (HR) as compared with catheter coronary angiography (CCA). METHODS AND RESULTS: Hundred and fifty consecutive patients (47 female, mean age 62.9 +/- 12.1 years) underwent dual-source CTCA without HR control. Patients were divided into subgroups depending on the median of their BMI (26.0 kg/m2), AS (194), and HR (66 b.p.m.). CCA was considered the standard of reference. Mean BMI was 26.5 +/- 4.2 kg/m2 (range 18.3-39.1 kg/m2), mean AS was 309 +/- 408 (range 0-4387), and HR was 68.5 +/- 12.6 b.p.m. (range 35-102 b.p.m.). Diagnostic image quality was found in 98.1% of all segments (2020/2059). Considering not-evaluative segments at CTCA as false-positive, overall per-patient sensitivity, specificity, positive, and negative predictive value were 96.6%, 86.8%, 82.6%, and 97.5%, respectively. High HR did not deteriorate diagnostic accuracy of CTCA. High BMI and AS were associated with a decrease in per-patient specificity to 84.1% and 77.8%, respectively, while sensitivity and negative predictive value remained high. CONCLUSION: Dual-source CTCA provides high diagnostic accuracy irrespective of the HR and serves as a modality to rule-out coronary artery stenoses even in patients with high BMI and AS.
Alkadhi et al. (Thu,) conducted a observational in Coronary stenoses (n=150). Dual-source computed tomography coronary angiography (CTCA) vs. Catheter coronary angiography (CCA) was evaluated on Diagnostic accuracy (sensitivity, specificity, positive and negative predictive value). Dual-source CTCA demonstrated high diagnostic accuracy for coronary stenoses compared to catheter angiography, with 96.6% sensitivity and 86.8% specificity, irrespective of heart rate.
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