[Drug bradyarrhythmias as a cause of hospital admission. Study of 83 cases].

Background And Objective: The frequency and circumstances associated with drugs-induced bradiarrhythmia (DB) causing hospital admission are little known.

Patients And Method: Retrospective analyses of DB in Cardiology (CD) and Internal Medicine (IMD) Departments of a 3rd level hospital over two consecutive years.

Results: We detected 83 cases (mean age: 72.

[Normal conventional electrocardiogram with negative pharmacological stress test does not rule out Brugada syndrome].

The diagnosis of Brugada syndrome, or right bundle-branch block with an elevated ST segment and negative T waves in V1-3, is obscured by the transitory normalization of the electrocardiogram, which can be unmasked by administering sodium-channel blockers. It has been recently reported that the condition can be underdiagnosed if only conventional precordial leads are used. We present the cases of two asymptomatic patients, a mother and son, with a family history of sudden cardiac death in first-degree relatives.