conduction defect

conduction defect

A failure of the normal passage of controlling electrical impulses through the specialized conduction muscle fibres of the heart. Conduction defects lead to various forms of HEART BLOCK.
References in periodicals archive ?
Key Words: Coronary artery disease, Chronic conduction defect, Coronary angiography, Permanent pacemaker
It may lead to central nervous system dysfunction; confusion, convulsions, coma, reversible cardiac conduction defect, secondary renal insufficiency even death.
Echocardiography (ECG) shows different changes in the form of sinus tachycardia, bundle branch blocks, intraventricular conduction defect, atrial and ventricular premature complexes, atrial fibrillation, ventricular tachyarrhythmia, ST segment elevation or depression, and T wave inversion.
Boxer Cardiomyopathy, or more specifically arrhythmogenic right ventricular cardiomyopathy (ARVC), is an inherited electrical conduction defect that causes an arrhythmia, or irregular heart beat.
Six preoperative predictors (carotid artery disease, previous coronary artery surgery, chronic obstructive pulmonary disease, conduction defect, body mass index > 25, and age > 80) and one postoperative (bleeding) predictor were significant.
After eighteen hours the hospital's ward coordinator reminded him that the patient had not shown any dizziness since admission and the monitor had not indicated a significant conduction defect, and so the patient should be sent home.
Naturally occurring mutations in LMNA have been shown to be responsible for distinct diseases called laminopathies, including dilated cardiomyopathy with of without conduction defect and with and without variable skeletal muscle involvement (17-19, 4, 20).
The SCN5A gene governs the behavior of cardiac sodium ion channels, and mutations in the gene are known to cause long QT syndrome, Brugada syndrome, sudden unexplained nocturnal death syndrome, ventricular fibrillation, congenital sick sinus syndrome, and progressive cardiac conduction defect.
In pretreatment studies, the Wisconsin scientists pinpointed the patients' tachycardia to a specific conduction defect in the electrical impulses that cause the heart's lower chambers to contract.
Any conduction defect is possible, but when symptomatic, complete heart block is most commonly reported in 23-30% of patients, followed by bundle branch block at 12-32%.
1 Rarely, interventricular septal hydatidosis leads to conduction defect, as in our case.
Forty patients who developed no intraventricular conduction defect during the course of anterior MI with the same demographic characteristics were selected as the control group.