The Relationship Between Myocardial Bridge and Electrocardiographic Tp-e Interval, Tp-e/QT and Tp-e/ QTc Ratio
Journal Title: HASEKİ TIP BÜLTENİ - Year 2017, Vol 55, Issue 1
Abstract
Aim: Myocardial bridge (MB) is generally known as an asymptomatic and benign anomaly, however, it can cause serious clinical conditions such as exercise-induced ventricular tachycardia and sudden death. Tp-e interval is the distance between the peak and the end of the T wave in electrocardiography. Tp-e/QT and Tp-e/QTc ratios are used as electrocardiographic indicators of ventricular arrhythmias. We have studied the effect of coronary angiographic features (the degree of stenosis and length of MB) of MB on myocardial repolarization parameters. Methods: The study group consisted of 53 patients with isolated MB and 58 patients with normal coronary arteries. Results: The QT interval and QTc were similar between the groups, however, Tp-e interval (92.72±14.72 and 79.59±12.12, respectively; p<0.001) and Tp-e/QT (0.24±0.041 and 0.21±0.025, respectively; p<0.001) and Tp-e/QTc (0.22±0.037 and 0.19±0.025, respectively; p<0.001) ratios were found to be significantly increased in MB group compared to the control group. In the comparison of the MB patients with critical and those with noncritical stenosis, Tp-e interval (100.69±10.79, 80.57±11.25, respectively; p<0.001) and Tp-e/QT (0.266±0.033, 0.219±0.037, respectively; p<0.001) and Tp-e/QTc (0.244±0.029, 0.196±0.027, respectively; p<0.001) ratios were higher in the MB with critical stenosis group. Conclusion: Our results indicate that these parameters can be practical ECG markers of ventricular arrhythmias in patients with MB.
Authors and Affiliations
Erkan Yıldırım, Emrah İpek, Kamuran Kalkan, Mustafa Öztürk, Mahir Cengiz, Hikmet Hamur
Keywords
Related Articles
- EP ID EP227931
- DOI 10.4274/haseki.3265
- Views 120
- Downloads 0
Alterations in Biomechanical Properties of the Cornea After Selective Laser Trabeculoplasty
Aim: To investigate changes in corneal biomechanical properties after selective laser trabeculoplasty (SLT). Methods: Patients who have received SLT and underwent evaluation of corneal biomechanical properties by ocular...
Frequency of Paroxysmal Nocturnal Hemoglobinuria Clone in Turkish Myelodysplastic Syndrome Group
Aim: Retrospective, cross-sectional, observational study to examine the frequency and features of paroxysmal nocturnal hemoglobinuria (PNH) clones in patients with myelodysplastic syndrome (MDS). Methods: Data were analy...
Flow-Mediated Dilatation and Asymmetric Dimethylarginine Do Not Predict Mortality in Peritoneal Dialysis Patients
Aim: Asymmetric dimethylarginine (ADMA) is associated with increased coronary artery disease risk through endothelial dysfunction in dialysis patients. We aimed to investigate the role of flow-mediated dilatation (FMD),...
The Value of Fibrosis Index in Discrimination of Chronic Hepatitis and Cirrhosis
Aim: To evaluate the value of Doppler ultrasonography (US) and fibrosis index in differentiating between chronic hepatitis and cirrhosis. Methods:Sixty-seven non-cirrhotic viral hepatitis B and C patients and 28 cirrho...
Co-existance of Juvenil Ankylosing Spondylitis with Familial Mediterranean Fever and Takayasu’s Arteritis: A Case Report
Juvenile ankylosing spondylitis (JAS) coexisting with Familial Mediterranean Fever (FMF) or Takayusu’s arteritis (TA) together with JAS have been reported in the literature. However, co-existance of these three diseases...