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Tülümen E, Giustetto C, Wolpert C, Maury P, Anttonen O, Probst V, Blanc JJ, Sbragia P, Scrocco C, Rudic B, Veltmann C, Sun Y, Gaita F, Antzelevitch C, Borggrefe M, Schimpf R. PQ segment depression in patients with short QT syndrome: a novel marker for diagnosing short QT syndrome? Heart Rhythm 2014; 11:1024-30. [PMID: 24589867 DOI: 10.1016/j.hrthm.2014.02.024] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/20/2013] [Indexed: 12/01/2022]
Abstract
BACKGROUND Patients with short QT syndrome (SQTS) have an increased risk for atrial tachyarrhythmias, ventricular tachyarrhythmias, and/or sudden cardiac death. PQ segment depression (PQD) is related to atrial fibrillation and carries a poor prognosis in the setting of acute inferior myocardial infarction and is a well-defined electrocardiographic (ECG) marker of acute pericarditis. OBJECTIVE To evaluate the prevalence of PQD in SQTS and to analyze the association with atrial arrhythmias. METHODS Digitalized 12-lead ECGs of SQTS patients were evaluated for PQD in all leads and for QT intervals in leads II and V5. PQD was defined as ≥0.05 mV (0.5 mm) depression from the isoelectric line. RESULTS A total of 760 leads from 64 SQTS patients (mean age 36 ± 18 years; 48 [75%] men) were analyzed. PQD was seen in 265 (35%) leads from 52 (81%) patients and was more frequent in leads II, V3, aVF, V4, and I (n = 43 [67%], n = 30 [47%], n = 27 [42%], n = 25 [39%], and n = 25 [39%], respectively). Nine of 64 (14%) patients presented with atrial tachyarrhythmias, and all of them had PQD. CONCLUSION Fifty-two of 64 (81%) patients with SQTS reveal PQD. As PQD is rarely observed in healthy individuals, this ECG stigma may constitute a novel marker for SQTS in addition to a short QT interval.
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Affiliation(s)
- Erol Tülümen
- University Medical Centre Mannheim, University of Heidelberg, Mannheim, Germany; DZHK (German Centre for Cardiovascular Research), partner site Heidelberg/Mannheim, Germany.
| | - Carla Giustetto
- Division of Cardiology, Department of Medical Sciences, University of Turin, Turin, Italy
| | - Christian Wolpert
- Department of Medicine-Cardiology, Nephrology and Internal Intensive Care Medicine, Klinikum Ludwigsburg, Ludwigsburg, Germany
| | - Philippe Maury
- Federation of Cardiology, University Hospital Rangueil, Toulouse, France
| | - Olli Anttonen
- Division of Cardiology, Lahti Central Hospital, Lahti, Finland
| | - Vincent Probst
- Service de Cardiologie, Institut du Thorax, Université de Nantes, Nantes, France
| | - Jean-Jacques Blanc
- Departement de Cardiologie, Université de Bretagne Occidentale, Hôpital de la Cavale Blanche, Brest, France
| | | | | | - Boris Rudic
- University Medical Centre Mannheim, University of Heidelberg, Mannheim, Germany; DZHK (German Centre for Cardiovascular Research), partner site Heidelberg/Mannheim, Germany
| | - Christian Veltmann
- University Medical Centre Mannheim, University of Heidelberg, Mannheim, Germany; DZHK (German Centre for Cardiovascular Research), partner site Heidelberg/Mannheim, Germany
| | - Yaxun Sun
- Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, Zhejiang, People's Republic of China
| | - Fiorenzo Gaita
- Division of Cardiology, Department of Medical Sciences, University of Turin, Turin, Italy
| | | | - Martin Borggrefe
- University Medical Centre Mannheim, University of Heidelberg, Mannheim, Germany; DZHK (German Centre for Cardiovascular Research), partner site Heidelberg/Mannheim, Germany
| | - Rainer Schimpf
- University Medical Centre Mannheim, University of Heidelberg, Mannheim, Germany; DZHK (German Centre for Cardiovascular Research), partner site Heidelberg/Mannheim, Germany
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