UNLABELLED The electrocardiogram (ECG) findings in acute coronary syndrome should always be interpreted in the context of the clinical findings and symptoms of the patient, when these data are available. It is important to acknowledge the dynamic nature of ECG changes in acute coronary syndrome. The ECG pattern changes over time and may be different if recorded when the patient is symptomatic o...

abstract  introduction: ischemic heart diseases (ihd) is the major cause of mortality and morbidity worldwide. diabetes mellitus (dm) is known as one of the main risk factors of ihd. silent ischemia is seen in diabetic patients more that in others. identification of these cases is of great value in clinical practice. in this study, ecg changes and their relationship with clinical symptoms of is...

Electrocardiographic manifestations of transient myocardial ischemia were studied, in 11 patients undergoing angioplasty (PTCA) of a left anterior descending coronary artery stenosis, by the visual inspection of the standard surface electrocardiogram (S-ECG) and the intracoronary ECG (IC-ECG) as well as computer-assisted analysis of the S-ECG. Cross-correlation analysis (CCA) performed by compu...

Participation in sports activity and regular physical training is associated with physiological structural and electrical changes in the heart (athlete's heart) that enable sustained increases in cardiac output for prolonged periods. Cardiovascular remodelling in the conditioned athlete is often associated with ECG changes. In rare cases, abnormalities of an athlete's ECG may reflect an underly...

BACKGROUND AND PURPOSE Abnormal ECG changes are frequently observed in patients with subarachnoid hemorrhage (SAH). Recently, evidence has been obtained that right insular cortex mediates sympathetic cardiovascular effects. We therefore assessed the laterality and location of SAH dominance in inducing cardiovascular changes as measured by ECG, blood pressure, and heart rate. METHODS After exc...

BACKGROUND Typical diagnostic, coved-type 1, Brugada ECG patterns fluctuate spontaneously over time with a high proportion of non-diagnostic ECG patterns. Insulin modulates ion transport mechanisms and causes hyperpolarization of the resting potential. We report our experience with unmasking J-ST changes in response to a dextrose-insulin test. METHODS Nine patients, mean age 40.5±19.4years (r...

Electrocardiographic (ECG) data from twenty Duchenne dystrophic patients aged 6 18 years were examined and compared with normal standards to explore the characteristic ECG abnormalities in these patients. Pathological electrocardiographic patterns were seen in 13 cases whereas 7 electrocardiograms were found normal. Amongst these 13 cases, the ECG of seven patients showed right ventricular hype...

The course of 357 balloon inflations performed during 38 angioplasties for single-vessel coronary artery disease was prospectively studied using continuous ECG recording. Ischemic ECG changes appeared during 91 percent of the inflations at a mean of 20 +/- 8 seconds after inflation and resolved in 97 percent of those at a mean of 11 +/- 5 seconds after deflation. Elevation of the plasma CPK lev...

Acute coronary syndrome is a common cause of presentation to hospital. ST segment elevation on an electrocardiogram (ECG) is likely to be cardiac in origin, but in low-risk patients other causes must be ruled out. We describe a case of a man with hypercalcaemia, no evidence of cardiac disease, and ECG changes mimicking acute myocardial infarction. These ECG changes resolved after treatment of t...