second-degree block

second-degree block

See Heart block.
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References in periodicals archive ?
Type II second-degree block is usually representative of a more advanced conduction abnormality of the His-Purkinje system.
In fetuses treated with dexamethasone, one of six with second-degree block progressed to third degree, and three remained in second degree (one paced, two progressed to third degree); two reverted to NSR (one progressed to second).
There is no reference to complicated arrhythmias such as flutter, second-degree block, junctional rhythms, and dissociation or complete block; a major distubance such as hyperkalemia is demonstrated at only the peaked T-wave stage.