Abstract
Objective Hypertension induces coronary artery disease (CAD) and progression of arterial wall calcification. As coronary calcifications may cause artefacts in 64-slice computed tomography coronary angiography (CTCA), we sought to determine the diagnostic accuracy of CTCA in patients with and without arterial hypertension. Methods Eighty-five consecutive patients with suspected CAD underwent CTCA, calcium-scoring and conventional coronary angiography, and were grouped as hypertensive (28 women, 31 men, mean age 65 ± 9 years, age range 49–82 years) or normotensive patients (10 women, 16 men, mean age 62 ± 11 years, age range 39–77 years). On an intention-to-diagnose-basis, no coronary segment was excluded and non-evaluative segments were rated as false positive. Results Per-patient sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) in the hypertensive group were 91.4, 83.3, 88.9, and 86.9%, while the respective values in the normotensive group were 100, 78.9, 63.6, and 100% (P = 0.42, 0.71, 0.05, and 0.15). In the hypertensive group the prevalence of CAD was 59% and the mean calcium-score was 256; respective values in the normotensive group were 27% and 69, (P < 0.01, and < 0.05 vs. hypertensives). Conclusions Although hypertensives have significantly higher coronary calcifications, sensitivity and specificity are comparably high as in normotensives. The prevalence of CAD is higher in hypertensives and brings about a trend towards a lower NPV and a higher PPV.
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Abbreviations
- CAD:
-
Coronary artery disease
- CTCA:
-
Computed tomography coronary angiography
- CCA:
-
Conventional coronary angiography
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Husmann, L., Scheffel, H., Valenta, I. et al. Impact of hypertension on the diagnostic accuracy of coronary angiography with computed tomography. Int J Cardiovasc Imaging 24, 763–770 (2008). https://doi.org/10.1007/s10554-008-9307-3
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DOI: https://doi.org/10.1007/s10554-008-9307-3