Case-control study on Torsades de pointes (TdP) FRESH-PEF3984-en Elodie AUBRUN Case-control study on Torsades de pointes (TdP) FRESH-PEF3984-en 3984 FRESH-PEF3984 Lamiae GRIMALDI-BENSOUDA L.A. SANTE EPIDEMIOLOGIE EVALUATION RECH Epidemiology France Portal (PEF) L.A. SANTE EPIDEMIOLOGIE EVALUATION RECH null Lamiae;GRIMALDI-BENSOUDA Pharmacoepidemiology Cardiology and vascular medicine Polymorphic ventricular tachycardia Healthcare system determinants: Use of care Healthcare system determinants Surveillance and assessment of the risk of torsades de pointes or syncope in long QT syndrome from drug exposure during actual treatment. null France Individuals General population Male Female Young Adult (19 to 24 years) Adult (25 to 44 years) Middle Aged (45 to 64 years) Aged (65 to 79 years) Case study: patients, men and women aged between 18 and 79, who have experienced a syncopal episode and a torsades de pointes or QT interval higher or equal to 500 ms, declared by a cardiologist, and occurring 30 days before enrolment. Clinical data Participant-reported health data Health event/morbidity Other Through organizations (health services or institutions schools businesses etc.) [10000-20000[ individuals Converting or copying information into a structured record Interview with the participant (including clinical) Observational Study Observational Study Case-control study 20 cases 13000+ témoins/controls Unknown To be defined Access on specific project only