In 50% of the @entity1 presenting with a @entity1163 , the cause is cardiac. The incidence of @entity944 with 24% is high in this group. Since most of the @entity591 -induced @entity1163 are due to @entity1165 ( @entity1165 ), a careful diagnostic approach must be used. The possibility of a @entity1165 to end in a fibrillation is great, especially in the presence of a @entity299 , which leads to a bad prognosis in such @entity1 . The aim of a careful anamnesis and clinical history is to establish the presence of a @entity299 . A @entity3153 , a long QT, an old @entity583 or a @entity453 ( @entity453 ) can be assessed by echocardiography (ECG). Stress testing is useful in evaluating a @entity453 and can possibly lead to a diagnosis when a @entity1165 or a @entity4710 ( @entity4710 ) is induced. ECG is used to assess the cardiac ejection fraction and in the evaluation of a suspected right or left @entity296 . The ambulatory ECG allow a diagnosis only in 2 to 3% of the cases. Nevertheless, the presence of more than 10 PVC/h and/or asymptomatic nonsustained @entity1165 is a predictor for @entity944 in syncopy @entity1 . Detection of late potentials has a sensitivity of 50 to 83% and a sensibility of 89 to 91% for the prediction of inducible sustained @entity1165 during electrophysiological studies (EPS) in @entity1 with @entity1163 . However, the usefulness of this technique is not fully established, since there is no significant difference in survival or recurrence of @entity1163 between @entity1 with and without late potentials. The EPS is an invasive technique and therefore used at the end of the investigations. The cardiovascular mortality is low (4%) in @entity1 with a negative EPS. A treatment is mandatory in @entity591 -induced @entity1163 even when the cause is a @entity4710 . Antiarrhythmic drugs are useful for the treatment of @entity4710 . However, radiofrequency ablation of the accessory pathway is preferable, since the success rate is over 90%, and the side effects of chronic ingestion of antiarrhythmic drugs can therefore be avoided. Some @entity1165 can be treated successfully with drugs under the control of an EPS, but most of the @entity1 must have the implantation of an @entity299 ( @entity299 ).

[ @entity591 -induced XXXX ].

@entity1 :: ('9606', 'Species') :: ['patients'] @entity4710 :: ('MESH:D013617', 'Disease') :: ['supraventricular tachycardia', 'SVT'] @entity296 :: ('MESH:D009202', 'Disease') :: ['cardiomyopathy'] @entity1165 :: ('MESH:D017180', 'Disease') :: ['VT', 'ventricular tachycardia'] @entity944 :: ('MESH:D003645', 'Disease') :: ['sudden death'] @entity1163 :: ('MESH:D013575', 'Disease') :: ['syncopes', 'syncope'] @entity591 :: ('MESH:D013610', 'Disease') :: ['tachycardia'] @entity453 :: ('MESH:D003324', 'Disease') :: ['CAD', 'coronary artery disease'] @entity299 :: ('MESH:D006331', 'Disease') :: ['organic heart disease', 'cardiac disease', 'internal cardiac defibrillator', 'ICD'] @entity583 :: ('MESH:D009203', 'Disease') :: ['myocardial infarction'] @entity3153 :: ('MESH:D014927', 'Disease') :: ['Wolff-Parkinson-White syndrome']
@entity1163 :: (MESH:D013575,Disease) :: ['syncopes']
