Incremental Prognostic Value of Coronary CT Angiography in Patients With Suspected Coronary Artery Disease

被引:91
|
作者
Russo, Vincenzo [1 ]
Zavalloni, Andrea
Reggiani, Maria Letizia Bacchi [2 ]
Buttazzi, Katia
Gostoli, Valentina
Bartolini, Simone
Fattori, Rossella
机构
[1] Univ Hosp S Orsola, Cardio Thorac Vasc Dept, Cardiovasc Radiol Unit, Bologna, Italy
[2] Univ Hosp S Orsola, Cardiol Inst, Bologna, Italy
关键词
coronary disease; imaging; prognosis; CT coronary angiography; ACUTE MYOCARDIAL-INFARCTION; SPIRAL COMPUTED-TOMOGRAPHY; STABLE ANGINA-PECTORIS; INTRAVASCULAR ULTRASOUND; STRESS ECHOCARDIOGRAPHY; DIAGNOSTIC-ACCURACY; HEART-ASSOCIATION; EUROPEAN-SOCIETY; GUIDELINE UPDATE; TASK-FORCE;
D O I
10.1161/CIRCIMAGING.109.880625
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
Background-Multidetector CT coronary angiography (MDCTCA) is capable of detecting coronary artery disease (CAD) with a high diagnostic accuracy. In particular, this technique is credited with having a negative predictive value close to 100%. However, data about the prognostic value of MDCTCA are currently lacking. We sought to determine the prognostic value of MDCTCA in patients with suspected but undocumented CAD and, in particular, the incremental prognostic value as compared with clinical risk and calcium scoring. Methods and Results-A total of 441 patients (age, 59.7 +/- 11.6 years) with suspected CAD underwent MDCTCA to evaluate the presence and severity of the disease. Patients were followed up as to the occurrence of hard cardiac events (cardiac death, nonfatal myocardial infarction, and unstable angina requiring hospitalization). Coronary lesions were detected in 297 (67.3%) patients. During a mean follow-up of 31.9 +/- 14.8 months, 44 hard cardiac events occurred in 40 patients. CT calcium scoring showed a statistically significant incremental prognostic value as compared to a baseline clinical risk model (P = 0.018), whereas MDCTCA provided an additional incremental prognostic value as compared with a baseline clinical risk model plus calcium scoring if considering both nonobstructive versus obstructive CAD (P = 0.016) or, better, plaque composition (calcified versus noncalcified and/or mixed plaques, P = 0.0001). During follow-up, an excellent prognosis was noted in patients with normal coronary arteries, with an annualized incidence rate of 0.88% if compared with those with mild CAD (3.89%) and with patients with significant coronary disease (8.09%). The presence of noncalcified or mixed plaques, regardless of lesion severity, was found to be the strongest predictor of events (P < 0.0001) as a potential marker of plaque vulnerability. Conclusions-MDCTCA provides independent and incremental prognostic information as compared to baseline clinical risk factors and calcium scoring in patients with suspected CAD. (Circ Cardiovasc Imaging. 2010; 3: 351-359.)
引用
收藏
页码:351 / 359
页数:9
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