hemiblock


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Related to hemiblock: fascicular block

hemiblock

 [hem´e-blok″]
failure in conduction of electrical impulse in either of the two main divisions of the left branch of the bundle of his; the interruption may occur in either the anterior (superior) or posterior (inferior) division. Hemiblock accompanied by an anterior wall myocardial infarction is a particularly serious finding.
left anterior hemiblock a conduction block of the anterior superior division of the left bundle branch; left anterior hemiblock with acute anterior wall myocardial infarction is a particularly serious finding.

divisional block

arrest of the impulse in one of the assumed two main divisions of the left branch of the atrioventricular bundle; that is, in either the anterior (superior) division or the posterior (inferior) division.
Synonym(s): hemiblock

hemiblock

(hĕm′ĭ-blŏk′)
n.
Arrest of the cardiac electrical impulse in either the anterior or the posterior division of the left branch of the bundle of His.

hem·i·block

(hem'ē-blok)
Arrest of the impulse in one of the two main divisions of the left branch of the bundle of His; i.e., in either the anterior (superior) division or the posterior (inferior) division.
References in periodicals archive ?
Clinical characteristics and outcomes of acute coronary syndrome patients with left anterior hemiblock. Heart 2014; 100(18): 1456-61.
(*) p<0.05 was accepted statistically significant and marked bold CAD: coronary artery disease; LAH: left anterior hemi block; LPH: left posterior hemiblock; LBBB: left bundle branch block; RBBB: right bundle branch block.
In our study ECG abnormalities like sinus bradycardia, ventricular premature contraction, T-wave inversion and left anterior hemiblock occurred in our patients who did not have any symptoms regarding cardiovascular system involvement.
An electrocardiogram showed a left anterior hemiblock and a first-degree atrioventricular block.
Patients who develop disease in only one fascicle of the left bundle are said to have a hemiblock. Patients may exhibit hemiblock or LBBB, a total loss of conduction in the left main branch bundle.
Electrocardiogram (ECG) showed mild sinus bradycardia, left anterior hemiblock, and left atrial dilatation.
The ECG showed a regular sinus rhythm at 70 beats per minute, a complete right branch block, and posterior left hemiblock (Figure 1), and PR interval was 120 ms.
(c) LAH, left anterior bundle hemiblock; COPD, chronic obstructive pulmonary disease; AP, angina pectoris; CHD, coronary heart disease.
Low voltage complexes throughout the record and left anterior hemiblock indicate poor prognosis.
The factors considered to cause LAD have included altered anatomic and electrical position of the heart, a normal variation, left anterior hemiblock, left bundle branch block (LBBB), Left ventricular hypertrophy (LVH), Myocardial fibrosis, inferior wall myocardial infarction, emphysema, WPW Syndrome, congenital heart disease (endocardial cushion defects), ectopic ventricular rhythms, pacing from apex of left or right ventricle and unknown factors associated with age.
More frightening yet was correctly identifying right and left bundle branch blocks or left anterior and posterior hemiblocks. In short, the Dip is what happens between basic knowledge and mastery.
The Hemiblocks: New Concepts of Intraventricular Conduction Based on Human Anatomical, Physiological and Clinical Studies.