A new application of the ST-HR loop to evaluate the exercise-induced reversible ischemia in healed anterior wall myocardial infarction.

Exercise-induced ST-segment elevation in infarct-related leads is often seen on the treadmill exercise electrocardiogram of patients with anterior wall myocardial infarction. However, the cause of this phenomenon is still a matter of controversy. The purpose of this study was to evaluate the relation between the direction of ST-segment-heart rate (ST-HR) loop rotation and reversible myocardial ischemia in the infarct-related area.

[Detection and diagnosis of coronary arteries using multi-detector CT].

Objective: In this study coronary arteries were compared and evaluated in 41 cases using multidetector CT with slice thicknesses of 2 mm and 1 mm. All 323 segments including #1-3, 5-8, and 11 [based on the American Heart Association (AHA) classification system] were used: 163 segments of 2 mm and 160 segments of 1 mm.

Methods: The images obtained were separated into fivelevels (0-4 points) of cardiac motion artifacts and evaluated based on volume rendering (VR) and partial maximum intensity projection (partial MIP).

Myocardial bridging of the left anterior descending coronary artery in acute inferior wall myocardial infarction.

Background: We observed marked myocardial bridging of the left anterior descending coronary artery (LAD) in the acute stages of inferior wall myocardial infarction (MI) in a group of patients who developed shock despite successful reperfusion of the infarct-related lesion (IRL).

Hypothesis: The purpose of this study was to elucidate the clinical significance of myocardial bridging in patients with inferior wall MI and shock.

Methods: The study group consisted of 53 patients with single-vessel disease of the right coronary artery, who underwent coronary angiography for acute inferior wall MI.

Effect of the stenosis location and severity on left ventricular function after single-vessel anterior wall myocardial infarction.

Background: The purpose of the current study was to determine how the location of the infarct-related lesion (IRL) and the degree of stenosis during the acute and chronic phases of infarction might affect left ventricular (LV) function in patients with acute anterior wall myocardial infarction.

Methods: Ninety consecutive patients with a first single-vessel anterior wall myocardial infarction (male/female ratio 75:15, mean age 60+/-9 years) underwent coronary angiography (CAG) immediately and 1 month after infarction. Patients were grouped according to IRL location (proximal [Coronary Artery Surgery Study (CASS) No.

Transition from classic aortic dissection to aortic intramural hemorrhage--a case report.

A 64-year-old man was hospitalized with chief complaints of chest and back pain. A diagnosis of Stanford type A aortic dissection with a false lumen extending from the ascending to the descending aorta was made based on the results of computed tomography (CT). A CT obtained the following day showed resolution of the false lumen and increased brightness of the aortic wall, typical of aortic dissection with intramural hemorrhage.