Rev Esp Cardiol. 2009;62(1):100-8 105 proximal occlusion of the RCA: ST depression in I and ST elevation in II < III and isoelectric in V1, according to the algorithm we published5,6 and is associated with multivessel disease (ST depression in V2-V6).7 The search for electrocardiographic criteria to differentiate LCA disease from other lesions effectively requires prospective studies, especiall...

Thirty four healthy young male subjects performed symptom limited exercise on Bruce protocol on treadmill machine. Hyperventilation induced labile repolarisation ST-T abnormalities were observed in 2 whereas exercise induced ST changes (upsloping ST depression in 4 and horizontal ST depression in 1) were observed in 5 additional candidates. Changes were unaccompanied by symptoms or signs and qu...

To the Editor:—In a recent commentary, Fleisher stated that even if ST segment trend monitoring has identified accurately a significant ST segment change, ST segment depression may not represent myocardial ischemia in younger individuals or in those with a low probability of coronary artery disease (CAD). In support of this contention, the argument is made that structural CAD usually is absent ...

STUDY OBJECTIVES Prior studies have proposed several ECG criteria for identifying the culprit artery in patients with acute inferior myocardial infarction (MI). We applied each criterion to our patients to assess its utility. In doing so, we discovered a previously unreported, but highly useful, criterion utilizing lead aVR. STUDY DESIGN Retrospective review. PATIENTS Thirty consecutive pat...

OBJECTIVE To determine the diagnostic value of ST segment depression limited to recovery phase of Exercise Tolerance Test (ETT). STUDY DESIGN An observational cross-sectional study. PLACE AND DURATION OF STUDY The study was carried out at Punjab Institute of Cardiology, Lahore, from March to August 2007 for a period of 6 months. METHODOLOGY In this study, 100 patients were selected with p...

PURPOSE To evaluate myocardial contractility during ST segment depression in healthy parturients during Cesarean section (CS). METHODS Forty-seven consecutive term parturients undergoing elective CS under spinal anesthesia were studied. The ST segment was recorded continuously on leads II and V5 using a Holter monitor. Myocardial performance was evaluated by measuring cardiac index (CI), hear...

BACKGROUND The association of particulate matter (PM) with cardiovascular morbidity and mortality is well documented. PM-induced ischemia is considered a potential mechanism linking PM to adverse cardiovascular outcomes. METHODS AND RESULTS In a repeated-measures study including 5979 observations on 48 patients 43 to 75 years of age, we investigated associations of ambient pollution with ST-s...

The characteristics of 93 patients in whom electrocardiographic recordings were obtained within 12 hours of the onset of non-Q-wave myocardial infarction were studied. Patients were divided into the three groups according to what electrocardiographic changes were seen. Forty nine patients had ST segment depression, 35 had ST segment elevation, and nine had T wave changes. Patients with ST segme...

ST-T wave changes in the electrocardiogram detected during routine examination and aggravated by erect posture, hyperventilation, and exercise in apparently healthy young individuals have been termed vasoregulatory abnormalities. No evidence of ischaemic heart disease has been found in such subjects. Ten young healthy air crew with vasoregulatory abnormalities were subjected to maximal exercise...

OBJECTIVE To determine the association of prolonged ST segment depression after an exercise test with severity of coronary artery disease. METHODS A cross sectional study of 100 consecutive patients referred to the cardiology laboratory for stress myocardial perfusion imaging (MPI) conducted between April-August 2008. All selected patients were monitored until their ST segment depression was ...