ABC | Volume 112, Nº5, May 2019

Original Article Luciano et al Analysis of coronariographies in Southern Brazil Arq Bras Cardiol. 2019; 112(5):526-531 Table 1 – Distribution of patients between the two institutions according to gender, clinical presentation, classification of appropriate use, coronary angiography result and treatment Source Hospital A Hospital B Score n = 171 % Score n = 566 % Gender Female 70 40.9% 196 34.6% p = 0.132 Male 101 59.1% 370 65.4% Clinic ACS 46 26.9% 375 66.3% p < 0.001 Stable 125 73.1% 191 33.7% Evaluation of appropriation Rarely Appropriate 10 5.8% 22 3.9% p = 0.084 Occasionally Appropriate 61 35.7% 50 8.8% p < 0.001 Appropriate 100 58.5% 494 87.3% p < 0.001 Result Normal 90 52.6% 214 37.8% p = 0.008 Single-vessel 38 22.2% 164 29.0% p = 0.078 Two-vessel 27 15.8% 100 17.7% p = 0.568 Three-vessel 12 7.0% 71 12.5% p = 0.045 LCT 4 2.3% 17 3.0% p = 0.647 Treatment Clinical 122 71.3% 340 60.1% p < 0.001 Angioplasty 31 18.1% 150 26.5% p = 0.025 Surgical 18 10.5% 76 13.4% p = 0.318 ACS: acute coronary syndrome; LCT: left coronary artery trunk. * Statistical significance analyzes performed using the chi-square test. Table 2 – Distribution of patients with ACS within the two institutions according to gender, result of coronary angiography and treatment Source Hospital A Hospital B Score n = 46 % Score n = 375 % Gender Female 19 41.3% 124 33.1% p = 0.266 Male 27 58.7% 251 66.9% Result Normal 10 21.7% 96 25.6% p = 0.569 Single-vessel 12 26.1% 126 33.6% p = 0.305 Two-vessel 15 32.6% 81 21.6% p = 0.093 Three-vessel 6 13.0% 57 15.2% p = 0.698 LCT 3 6.5% 15 4.0% p = 0.424 Treatment Clinical 20 43.5% 188 50.1% p = 0.394 Angioplasty 19 41.3% 130 34.7% p = 0.374 Surgical 7 15.2% 57 15.2% p = 0.997 ACS: acute coronary syndrome; LCT: left coronary artery trunk. * Statistical significance analyzes performed using the chi-square test. for preoperative cardiac surgery exams at Hospital B when compared to Hospital A, and a predominance of CAD investigation at Hospital A (Table 3). Of the 737 patients, 32 (4.3%) had their coronary angiography classified as rarely appropriate. Of these, 18 cases (56.2%) were related to non-performance of previous functional tests; six (18.8%) were asymptomatic patients or those with stable symptoms who underwent prior revascularization; six (18.8%) were stable asymptomatic non‑cardiac surgery patients with functional capacity ≥ 4 METS; one (3.1%) had known CAD receiving clinical treatment, and with low-risk findings in noninvasive tests, or stable symptoms, and one (3.1%) with mild or moderate aortic valve stenosis of native or prosthetic valve, and asymptomatic regarding valve disease. Among those classified as rarely appropriate, seven cases (21.9%) had severe coronary lesions but, regardless of the result of the coronary angiography, all patients in this group 528