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Table 3 Comparison of the clinical and electrocardiographic findings during Exercise Echocardiography in patients: Group 1 (G1) and Group 2 (G2).

From: Chronotropic incompetence and a higher frequency of myocardial ischemia in exercise echocardiography

VARIABLES G1 n = 490 (12%) G2 n = 3552(88%) P
Angina 81 (16%) 150 (4%) < 0.0001
Blood pressure ≥ 220 × 120 mmhg 72 (15%) 508 (14%) 0.822
Simple Arrhythmia 97 (20%) 822 (23%) 0.098
Severe Arrhythmia 20 (4%) 64 (2%) 0.001
ST segment changes 144 (30%) 1517 (43%) < 0.0001
  1. G1 group: patients who failed to achieve 85% of the maximal age-predicted HR;
  2. G2 group: patients who were able to achieve 85% of the maximal age-predicted HR.