Table 1.
Comparison of STEMI patients’ baseline characteristics between March and April 2020 versus the same period of 2019. Categorical variables are expressed in frequencies, and percentages and numerical variables in means and standard deviations.
| March and April 2019 | March and April 2020 | p-value | |
|---|---|---|---|
| Patients | 55 | 49 | |
| Weekly STEMI patients | 6.9±1.9 | 6.1±2.4 | 0.494 |
| Age, years | 61.9±12 | 64.5±13.8 | 0.308 |
| Male gender | 46 (84.8%) | 38 (77.6%) | 0.295 |
| Hypertension | 35 (63.6%) | 38 (77.6%) | 0.091 |
| Type 2 diabetes | 16 (29.1%) | 11 (22.4%) | 0.293 |
| Dyslipidemia | 29 (52.7%) | 32 (65.3%) | 0.135 |
| Clinical HF | 3 (5.5%) | 1 (2%) | 0.354 |
| Chronic kidney disease | 4 (7.3%) | 2 (4.1%) | 0.396 |
| Previous stroke | 2 (3.6%) | 3 (6.1%) | 0.445 |
| Current smoker | 24 (43.6%) | 18 (36.7%) | 0.303 |
| Creatinine, mg/dL | 1.1±0.7 | 1.1±0.5 | 0.769 |
| Previous peripheral arterial disease | 2 (3.6%) | 1 (2%) | 0.721 |
| Previous myocardial Infarction | 1 (1.8%) | 1 (2%) | 0.872 |
| Previous PCI | 1 (1.8%) | 1 (2%) | 0.872 |
| Previous CABG | 0 | 0 | |
| Pre-hospital emergency medical service | 21 (38.2%) | 10 (20.4%) | 0.038 |
| Patient delay, min | 240 [120-570] | 360 [120-600] | 0.940 |
| System delay, min | 49 [30-110.25] | 140 [90-180] | 0.019 |
| Killip-Kimball class | 1.4±0.8 | 1.9±1.2 | 0.006 |
| I | 41 (74.5%) | 25 (51%) | |
| II | 10 (18.2%) | 11 (22.4%) | |
| III | 1 (1.8%) | 4 (8.2%) | |
| IV | 3 (5.5%) | 9 (18.4%) |
CABG: coronary artery bypass graft; HF: heart failure; PCI: percutaneous coronary intervention; STEMI: ST-elevation myocardial infarction.