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10 July 2017 : Case report  Brazil

Wolff-Parkinson-White Syndrome with Ventricular Hypertrophy in a Brazilian Family

Challenging differential diagnosis, Diagnostic / therapeutic accidents, Management of emergency care, Rare disease, Educational Purpose (only if useful for a systematic review or synthesis), Rare coexistence of disease or pathology

Lenises de Paula van der Steld1ABCDEFG*, Oscar Campuzano234ACDEF, Alexandra Pérez-Serra23E, Mabel Moura de Barros Zamorano5BCD, Selma Sousa Matos6B, Ramon Brugada2347BEG

DOI: 10.12659/AJCR.904613

Am J Case Rep 2017; 18:766-776

Abstract

BACKGROUND: PRKAG2 syndrome diagnosis is already well-defined as Wolff-Parkinson-White syndrome (WPW), ventricular hypertrophy (VH) due to glycogen accumulation, and conduction system disease (CSD). Because of its rarity, there is a lack of literature focused on the treatment. The present study aimed to describe appropriate strategies for the treatment of affected family members with PRKAG2 syndrome with a long follow-up period.

CASE REPORT: We studied 60 selected individuals from 84 family members (32 males, 53.3%) (mean age 27±16 years). Patients with WPW and/or VH were placed in a group of 18 individuals, in which 11 (61.1%) had VH and WPW, 6 (33.3%) had isolated WPW, and 1 (5.6%) had isolated VH. Palpitations occurred in 16 patients (88.9%), chest pain in 11 (61.1%), dizziness in 13 (72.2%), syncope in 15 (83.3%), and dyspnea in 13 (72%). Sudden cardiac death (SCD) occurred in 2 (11.1%), and 2 patients with cardiac arrest (CA) had asystole and pre-excited atrial flutter-fibrillation (AFL and AF) as the documented mechanism. Transient ischemic attack (TIA) and learning/language disabilities with delayed development were observed. Genetic analysis identified a new missense pathogenic variant (p.K290I) in the PRKAG2 gene. Cardiac histopathology demonstrated the predominance of vacuoles containing glycogen derivative and fibrosis. The treatment was based on hypertension and diabetes mellitus (DM) control, antiarrhythmic drugs (AD), anticoagulation, and radiofrequency catheter ablation (RCA). Six patients (33.3%) underwent pacemaker implantation (PM).

CONCLUSIONS: The present study describes the clinical treatment for a rare cardiac syndrome caused by a PRKAG2 mutation.

Keywords: Cardiomyopathy, Hypertrophic, Familial, Death, Sudden, Cardiac, Wolff-Parkinson-White Syndrome

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American Journal of Case Reports eISSN: 1941-5923
American Journal of Case Reports eISSN: 1941-5923