Exercise-induced ST-segment elevation was correlated with myocardial perfusion abnormalities and coronary artery obstruction in 35 patients. Ten patients (group 1) developed exercise ST elevation in leads without Q waves on the resting ECG. The site of ST elevation corresponded to both a reversible perfusion defect and a severely obstructed coronary artery. Associated ST-segment depression in o...

ST segment elevation in characteristic electrocardiographic leads during an acute myocardial infarction generally allows correct identification of the coronary artery occluded (1). Electrocardiographic changes, usually ST segment depression, are often noted in other leads, presumably representing myocardium sub served by other coronary arteries. What do such changes mean? Are they a benign elec...

In acute myocardial infarction depression of the ST segment in leads distant from those showing ST elevation has been considered to be "reciprocal" but might reflect local ischaemia. To examine this possibility 103 consecutive patients who underwent exercise testing early after myocardial infarction were reviewed. Treadmill exercise testing was performed a mean of 12 (range 5-30) days after inf...

OBJECTIVES To investigate the diagnostic and prognostic value of ST segment depression limited to the recovery phase of an exercise stress test, as compared with that of ST segment depression appearing during exercise. SETTING Exercise stress test laboratory of a university hospital. PATIENTS AND DESIGN Clinical and angiographic data were compared for 574 consecutive patients who developed ...

Objectives: To investigate the diagnostic and prognostic value of ST segment depression limited to the recovery phase of an exercise stress test, as compared with that of ST segment depression appearing during exercise. Setting: Exercise stress test laboratory of a university hospital. Patients and design: Clinical and angiographic data were compared for 574 consecutive patients who developed S...

To determine electrocardiographic changes and whether myocardial ischemia occurs during cesarean section, electrocardiograms were recorded continuously using Holter monitoring in 25 patients undergoing elective cesarean section under either spinal or epidural anesthesia. In addition, in 13 of the patients, two-dimensional precordial echocardiography was carried out before and during cesarean se...

In 38 patients with angina pectoris, 87 unipolar lead electrocardiograms were recorded from different sites over the entire thoracic surface both before and after submaximal treadmill exercise. The site of exercise-induced ST depression on the body surface was correlated with the findings of the coronary arteriography. The number of leads which showed exercise-induced ST depression was 7.2 +/- ...

Symptom-limited cardiopulmonary exercise testing was performed in 37 patients with mitral stenosis (MS) without significant coronary artery stenosis to evaluate factors affecting ST depression in exercise electrocardiograms. The degree of ST depression was not associated with gender or exercise tolerance. The incidence of significant ST depression was higher in the patients receiving than in th...

OBJECTIVE AND METHODS We examined the prognostic significance of electrocardiographic predictors (number of leads with ST depression, maximal ST depression, QT dispersion), C-reactive protein, fibrinogen, myosin light chain 1 and creatine kinase MB fraction in 62 patients with unstable angina showing ST depression during an anginal attack. RESULTS During the 90-day follow-up period, 15 patien...