Sinoatrial block

What it means

Disturbance in the atrial activation that is caused by transient failure of impulse conduction from the sinoatrial node to the cardiac atria.

Sinoatrial block is characterized by a delayed in heartbeat and pauses between P waves as demonstrated by electrocardiography.

Rare diseases that can present with this1

The range is how often this sign appears among people diagnosed with each disease — it is not a probability of having any of them. Many of these signs also occur in common, non-rare conditions. A sign on this page is a conversation to have with a clinician, not a conclusion.

Part of the broader category