P636T wave peak to t wave end interval is prolonged in patients with atrioventricular nodal reentry:

Yontar, Osman Can; Tütüncü, Ahmet; Karaagac, Kemal; Karakuş, Ali; Yontar, Onur; Melek, Mehmet

doi:10.1093/cvr/cvu098.63

Cited by 2 publications

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“…On the other hand, recent studies showed that prolongation of the Tp-e interval is a marker of ventricular arrhythmias, increased risk of mortality in congenital long QT syndromes, hypertrophic cardiomyopathy, and also in patients with myocardial infarction who underwent primary percutaneous coronary intervention (18)(19)(20)(21). Prolongation of the Tp-e interval indicates a period of potential vulnerability to reentrant ventricular arrhythmias (22). Therefore, it is clinically im-portant that we have shown that the Tp-e interval is prolonged in patients with leprosy, and it shows us that we should be careful about cardiac complications, especially arrhythmic events.…”

Section: Discussionmentioning

confidence: 99%

Electrocardiographic Findings of Leprosy

Yıldırım¹,

Seçen²,

Demir³

et al. 2018

Erciyes Med J

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Objective: The purpose of the present study was to investigate the effect of leprosy on basic electrocardiography (ECG) parameters. Materials and Methods: A total of 66 patients including 33 patients with leprosy (mean age: 70.06 years, 24 males) and 33 control patients (mean age: 56.66 years, 15 males) were included in the study. ECG recordings of all patients were obtained, and groups were compared in terms of heart rate, PR, QT, QTc, JTc, and T peak to T end (Tp-e) durations and branch blocks. Results: QT (391.30 vs. 367.66, p<0.01), QTc (423.57 vs. 407.15, p<0.01), and Tp-e (74.18 vs. 66.93, p<0.001) intervals were significantly prolonged in the leprosy group. The left anterior hemiblock (LAH) was observed more in patients with leprosy (42.4% in 14 patients) than in the non-leprosy group (42.4% vs. 12.1%, p<0.01). In addition, the rate of the unifascicularblock was significantly higher in the leprosy group (39.4% vs. 9.1%, p<0.01). Conclusion: Leprosy has a significant effect on QT, QTc, and Tp-e intervals. Prolongation of the QT, QTc, and Tp-e intervals is an indicator of leprosy's effect on the cardiac autonomic system. The ratio of the LAH is also rather high, and that may be a marker of the area where leprosy is most effective on the heart.

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Section: Discussionmentioning

confidence: 99%

Electrocardiographic Findings of Leprosy

Yıldırım¹,

Seçen²,

Demir³

et al. 2018

Erciyes Med J

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“…A prolonged Tp-e interval represents a period of susceptibility to ventricular arrhythmias. It was shown that this interval has been associated with increased risk of mortality in various congenital and structural heart diseases (11)(12)(13)(14)(15). There is little information in current literature concerning ventricular arrhythmia susceptibility in ASD.…”

Section: Introductionmentioning

confidence: 99%

Atrial septal defect patients with greater shunts show susceptibility for ventricular arrhythmias

Yontar¹

2020

HVT

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Objective: Ventricular arrhythmia episodes are not infrequent in patients with atrial septal defect (ASD). Disturbance in cardiac volume and pressures may lead to enlargement and fibrosis in heart. An interatrial volume displacement through septal defect, briefly interatrial shunt, is the major reason for this complication. Prolongation of the interval between the peak and end of the T wave (Tpeak to Tend, Tp-e) on the 12-lead electrocardiogram (ECG), is utilized as a marker of ventricular arrhythmogenesis during last years. The aim of this study was to assess if there is an impact of shunt ratio on ventricular repolarization in patients with ASD by using Tp-e interval, Tp-e/QT ratio, and Tp-e/QTc ratio. Methods: Patient records of Samsun Training and Research Hospital were retrospectively analyzed. Electrocardiograms of 133 patients, who were diagnosed as ASD between January 2016 and December 2019 were obtained and scanned. ECG intervals were measured. Shunt ratios, right ventricle diameters and volumes were also acquired. Patients were grouped into two by their calculated shunt ratio, ratio of ≥2.0 is accepted as a high shunt group and <2.0 as a low shunt group. Results: Both groups’ baseline characteristics were similar. Right ventricular dimensions and systolic pulmonary artery pressure were higher in high shunt group. Furthermore, ASD patients with higher shunt ratio had significantly higher ECG measurements than controls, Tp-e: 103.0 (22.1) vs 76.2 (10.2); Tp-e/QT: 0.25 (0.03) vs 0.21 (0.02); Tp-e/QTc: 0.22 (0.03) vs, 0.17 (0.02); for all p<0.001). Of all ECG parameters; Tp-e (r=0.631, p<0.001), Tp-e/QT (r=0.531, p<0.001) and Tp-e/QTc (r=0.614, p<0.001) had moderate correlation with shunt ratio. Conclusion: T wave peak-to-end interval is a measure of transmural dispersion of repolarization and accepted as a surrogate for increased ventricular arrhythmogenesis risk. Our findings show that ASD patients whose shunt ratio are ≥2.0 show increased risk for arrhythmias. Key words: atrial septal defect, electrocardiogram, ventricular arrhythmia, risk, ventricular repolarization

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P636T wave peak to t wave end interval is prolonged in patients with atrioventricular nodal reentry:

Cited by 2 publications

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Electrocardiographic Findings of Leprosy

Electrocardiographic Findings of Leprosy

Atrial septal defect patients with greater shunts show susceptibility for ventricular arrhythmias

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