[Electrocardiographic diagnosis of left main coronary artery obstruction using ST-segment and QRS-complex vector analysis].

Introduction And Objectives: It is vital that obstruction of the left main coronary artery (LMCA) is diagnosed early. We investigated the value of ST-segment and QRS-complex vector analysis in identifying LMCA obstruction in acute coronary syndrome.

Methods: The study involved 57 consecutive patients with electrocardiographic features suggestive of LMCA obstruction.

Myocardial damage after inhalation of chloramines.

The objective of this case report was to document a rare case of myocardial damage, in the context of an accidental inhalation of chloramines, demonstrated by electrocardiogram and myocardium-specific enzymes.

[Electrocardiographic prediction of the site of lesion in the anterior descending artery in acute myocardial infarction].

Introduction And Objectives: The goal of this study was to analyze the value of electrocardiography in predicting the site of the lesion in the left anterior descending coronary artery, in relation to the first septal and the first diagonal branches, in patients with acute anterior myocardial infarction.

Method: Ninety consecutive patients who were admitted to the coronary unit with acute anterior myocardial infarction from July 1998 to May 2000 were studied retrospectively. The electrocardiographic changes were analyzed and correlated with the site of the lesion in the anterior descending artery, as determined by coronary angiography.

[The effect of myocardial infarct on the employment situation of patients].

Introduction And Objectives: The impact of acute myocardial infarction in labour activity changes from one country to another as well as patients' characteristics. Our purpose was aimed to learn the main demographic, professional, clinical and therapeutic variables which might affect the return to work after suffering a myocardial infarction in our environment.

Methods: 584 patients treated consecutively in our Coronary Unit for 4 years, aged under 65, were studied.

[Early discharge in uncomplicated acute myocardial infarction].

Introduction And Objectives: The length of hospital stay for uncomplicated myocardial infarction is still a debatable issue. Our study tries to establish the rate of patients amenable early discharged and the safety of this practice.

Patients And Methods: We studied retrospectively the clinical features, in-hospital events and 30-day follow up of 238 patients discharged early (5 or 6 days) during the last three years.

A new electrocardiographic approach to identify the coronary artery responsible for acute inferior myocardial infarction: a study in 100 patients.

Objective: The objective of this study is to analyze the value of the electrocardiogram in the identification of the coronary artery responsible for acute inferior myocardial infarction.

Material And Methods: One hundred consecutive patients with acute inferior myocardial infarction were studied, 67 with a lesion in the right coronary artery and 33 in the circumflex artery. The ST segment changes in the inferior, lateral, precordial and right-chest leads were analyzed, as well as the arithmetic sum of the ST segment in the inferior and V2 leads (II + V2, III + V-2 and aVF + V2).

Electrocardiographic diagnosis of the responsible coronary artery in acute inferior myocardial infarction through right chest leads V3R-V8R. A prospective study.

In order to identify the electrocardiographic changes that occur in right-chest leads V3R-V8R for the most significant diagnosis of the responsible coronary artery of acute myocardial infarction, the authors performed a prospective study on 66 patients in whom coronary arteriography was done between the first and twelfth weeks after suffering the infarction. Electrocardiograms were done within the first six hours after the onset of symptoms. Lesions of the right coronary artery were found in 46 patients--27 at a proximal level and 19 at a distal one--and in 20 patients the circumflex coronary artery was injured.

Diagnostic value of the arithmetic sum of the ST segment of inferior and V2 leads, II + V2, III + V2 and aVF + V2 in identifying the artery responsible for inferior acute myocardial infarction.

In order to evaluate electrocardiographic changes in the diagnosis of the artery responsible for inferior myocardial infarction, a prospective study was performed on inferior and V2 ST segment deviation and its correlation using the arithmetic sum: II + V2, III + V2, and aVF + V2. A group of 66 patients with inferior acute myocardial infarction (AMI) was studied. A standard 12-leads electrocardiogram was performed within six hours of the onset of chest pain.

[Mitral insufficiency caused by isolated rupture of the papillary muscle secondary to blunt thoracic trauma].

We report a patient suffering from mitral insufficiency after isolated rupture a papillary muscle as a result of a car accident with blunt chest trauma. The diagnosis is often difficult due to related multiple lesions which vary the clinical picture. Physical exploration, electrocardiogram, enzymatic and nuclear scan lack adequate sensitivity and specificity.

[Depression and elevation of the ST segment in the V4R lead during the stress test of a patient with a proximal lesion of the right coronary artery].

We report a patient with a proximal right coronary artery lesion in whom opposite shifts of ST segment in V4R lead were observed during and after exercise. ST-segment depression was provoked by exercise, while ST-segment elevation appeared in the recovery phase. We speculate that different degrees of myocardial ischemia (non-transmural vs transmural) may explain this apparently paradoxical response.