INTRODUCTION AND OBJECTIVES Exercise-induced left bundle-branch block does not always denote the presence of underlying coronary artery disease. The aim of this study was to analyze the clinical characteristics and evolution of patients with rate-dependent left bundle-branch block. PATIENTS AND METHOD 9,318 consecutive exercise stress studies were reviewed. The clinical characteristics and ev...

To map precise myocardial perfusion anatomy, we correlated detailed coronary arteriographic anatomy for every coronary artery and all secondary branches in the heart that had flow-limiting stenosis with corresponding specific, circumscribed, myocardial perfusion defects by positron emission tomography. Eight hundred ninety-five patients with abnormal coronary arteriograms showing any visible co...

1.3 Compartments 7 1.3.1 Posterior Compartment 7 1.3.1.1 Connective Tissue Structures 7 1.3.1.2 Muscles 10 1.3.1.3 Reinterpreted Anatomy and Clinical Relevance 12 1.3.1.4 Important Vessels, Nerves and Lymphatics of the Posterior Compartment: 13 1.3.2 Anterior Compartment 14 1.3.2.1 Connective Tissue Structures 14 1.3.2.2 Muscles 15 1.3.2.3 Reinterpreted Anatomy and Clinical Relevance 16 1.3.2.4...

Coronary angiography, cine left ventriculography, and the cardiovascular hemodynamics of 24 patients with left bundle branch block were studied. Seven patients were found to have significant coronary artery disease, always severe. Five had cardiomyopathy and seven had valvular disease. Only those with coronary artery disease or cardiomyopathy had abnormal left ventricular contraction patterns. ...

AIM Left ventricular (LV) lead placement in the latest activated region is an important determinant of response to cardiac resynchronization therapy (CRT). We investigated the feasibility of coronary venous electroanatomic mapping (EAM) to guide LV lead placement to the latest activated region. METHODS AND RESULTS Twenty-five consecutive CRT candidates with left bundle-branch block underwent ...

A 58-year-old man was admitted with a 6-week history of fever, lethargy, arthralgia, and dyspnea on exertion. He had no prior illness or cardiovascular risk factors, and with the exception of a pyrexia, his physical examination was unremarkable. Investigations were performed, including blood and urine cultures and a connective tissue screen. He was subsequently discharged with a view to an earl...