True and False Left Anterior Hemiblock

Left anterior hemiblock masking inferior myocardial infarction.

A case is presented in which transient left anterior hemiblock masked the electrocardiographic signs of old inferior wall infarction. The electrocardiographic features are correlated with the anatomopathological findings. This case re-emphasizes the need for careful evaluation of patients with chest pain and left anterior hemiblock.

Left anterior hemiblock or inadvertent lead misplacement?

CASE REPORT Left Anterior and Left Posterior Hemiblock

A patient with tricuspid atresia and characteristic electrocardiographic features of counterclockwise and superiorly oriented frontal plane QRS loop (left anterior hemiblock) is presented. Operative intervention resulted in a clockwise and inferior rotation of the frontal QRS loop (left posterior hemiblock) without the development of complete left bundle branch block. This observation suggests ...

Left anterior hemiblock masking coronary insufficiency.

A case is presented in which transient left anterior hemiblock masked the electrocardiographic signs of coronary insufficiency during work.

Effect of intermittent left anterior hemiblock on left ventricular function.

Studies of left ventricular function were performed during intermittent left anterior hemiblock, Max dP/dt and Vmax fell during left anterior hemiblock, with a rise in left ventricular end-diastolic pressure compared with a normally conducted beat.