Comparison of clinical and electrophysiologic features of preexcitation syndromes in patients presenting initially after age 50 years with those presenting at younger ages
Rosenfeld L, Van Zetta A, Batsford W. Comparison of clinical and electrophysiologic features of preexcitation syndromes in patients presenting initially after age 50 years with those presenting at younger ages. The American Journal Of Cardiology 1991, 67: 709-712. PMID: 2006621, DOI: 10.1016/0002-9149(91)90526-q.Peer-Reviewed Original ResearchConceptsGroup 2 patientsGroup 1 patientsPreexcitation syndromeAtrial fibrillation/flutterAge 50 yearsChronic cardiac diseaseWide complex tachycardiaLate adulthoodInitial arrhythmiaElectrocardiographic evidenceOlder patientsElectrophysiologic featuresElectrophysiologic studyAtrial arrhythmiasQRS intervalSurgical diseaseOrthodromic tachycardiaCardiac diseaseGroup 1PatientsNormal rangeComplex tachycardiaYounger ageElectrocardiographic identificationPrenatal period