Gilenya has not been studied in patients with ischemic heart disease, congestive heart failure, second degree or higher conduction block, sick sinus syndrome, or prolonged QT interval.

Therefore, the substrate of ventricular fibrillation is transient or permanent conduction block.

Overdoses cause hyperkalemia, which can lead to paresthesia, cardiac conduction blocks, fibrillation, arrhythmias, and sclerosis.

Ultimately, the causes act by three mechanisms: depressed automaticity of the heart, conduction block, or escape pacemakers and rhythms.

It refers to a conduction block between the atria and ventricles.

The sucrose gap technique is used to create a conduction block in nerve or muscle fibers.

The method creates conduction block in a nerve or muscle fiber by introducing a gap of high resistance between two groups of cells.

Electrophysiological testing of these children showed motor axonal loss with occasional conduction block with a lack of demyelinating features and normal sensory potentials.

Patients are still aware of pain even after full conduction block has occurred; hence, general anesthetics and/or analgesics must also be given to prevent anesthesia awareness.

In the absence of changes indicating axonal damage, conduction block implies myelin damage to the involved segment.