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[Diagnosis of sick sinus syndrome: sinus node recovery time as a bedside-investigation (author's transl)].

Prolonged sinus node recovery time is the most important diagnostic parameter of the sick sinus syndrome. In consideration of the therapeutic proceeding (antiarrhythmic drugs, pacemaker implantation or combination of these two therapeutic measures) an exact diagnostic proceeding is desirable. In 103 atrial stimulations we found in 42 cases a prolonged sinus node recovery time. There are shown details, which make the atrial stimulation practicable as a bedside-investigation.