Second Degree AV Block Type II is typically caused by an intermittent block (interrupted supraventricular impulse) below the AV node. One or more QRS complexes are dropped with PR intervals that do not change (fixed PR interval). This irregular rhythm requires close monitoring: 1) low cardiac output is likely when multiple dropped QRS complexes occur; and 2) this rhythm can progress to complete heart block (third degree AVB).
Discontinue arrythmie, can be diagnosed with the ECG and the identification of the discontinuity of the wave in the image.
Mobitz II AV block necessitating active intervention. The definitive treatment is typically the insertion of a permanent pacemaker, even in asymptomatic patients, due to this high risk.
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