Final answer:
A third-degree block, also known as a complete heart block, is the type of dysrhythmia characterized by the ventricles ignoring a consistent number of atrial impulses. In this condition, there is no correlation between atrial activity and ventricular activity, and the ventricles rely on an escape rhythm to maintain a regular heartbeat.
Step-by-step explanation:
The type of dysrhythmia characterized by the ventricles ignoring a consistent number of atrial impulses is called a third-degree block or complete heart block.
Third-degree block is a type of arrhythmia where there is no correlation between atrial activity (the P wave) and ventricular activity (the QRS complex). The atrial impulses are completely blocked from reaching the ventricles, causing them to ignore a consistent number of atrial impulses.
In this condition, the ventricles rely on an escape rhythm, which is a backup pacemaker site, to maintain a regular heartbeat.