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Table 1 Baseline characteristics of the study population, their comparison between the responsive and unresponsive patients to nitroglycerine, and the univariable logistic regression analysis

From: Intracoronary injection of nitroglycerine can prevent unnecessary percutaneous coronary intervention

  Total, n = 360 Responsive (n = 27) Unresponsive (n = 333) Odds ratio 95 confidence interval P-value
Age, year (mean ± SD) 60.2 ± 11.6 60.8 ± 10.5 60.2 ± 11.7 0.99 0.96–1.03 0.796
Male sex, n (%) 265 (73.6) 18 (66.7) 247 (74.2) 1.43 0.62–3.31 0.397
Hypertension, n (%) 176 (48.9) 11 (40.7) 165 (49.5) 1.43 0.64–3.17 0.381
Diabetes mellitus, n (%) 106 (29.4) 5 (18.5) 101 (30.3) 1.92 0.71–5.20 0.202
Hyperlipidemia, n (%) 81 (22.5) 4 (14.8) 77 (23.1) 1.73 0.58–5.15 0.325
Smoking, n (%) 117 (32.5) 10 (37.0) 107 (32.1) 0.8 0.36–1.82 0.601
Previous cardiovascular disease, n (%) 138 (38.3) 6 (22.2) 132 (39.6) 2.3 0.90–5.85 0.081
Diagnosis at presentation, n (%)
Stable angina 128 (35.6) 13 (48.1) 115 (34.5) 0.058
Unstable angina/NSTEMI 83 (23.1) 9 (33.3) 74 (22.2) 0.93 0.38–2.28 0.873
STEMI 149 (41.4) 5 (18.5) 144 (43.2) 3.26 1.13–9.40 0.029
The involved vessel, n (%)
LM stenosis 19 (5.3) 3 (11.1) 16 (4.8) 0.4 0.11–1.48 0.172
LAD stenosis 223 (61.9) 10 (37.0) 213 (64.0) 3.02 1.34–6.80 0.006
LCX stenosis 112 (31.1) 4 (14.8) 108 (32.4) 2.76 0.93–8.17 0.067
RCA stenosis 144 (40.0) 11 (40.7) 133 (39.9) 0.97 0.43–2.15 0.935
Multivessel disease, n (%) 159 (44.2) 1 (3.7) 158 (47.4) 23.47 3.15–174.99 0.002
  1. LAD left anterior descending artery; LCX left circumflex artery; LM left main coronary artery; NSTEMI Non-ST elevation myocardial infarction; RCA right coronary artery; SD standard deviation; STEMI ST-elevation myocardial infarction
  2. *P < 0.05 was considered significant