Evaluation of Tp-e interval, Tp-e / QT ratio and Tp-e / QTc ratio in blunt chest trauma patients

Abstract

BACKGROUND: After blunt chest trauma, life-threatening arrhythmias may occur in the early post-injury period, as well as a few days after the injury. This study aimed to evaluate the risk of arrhythmias in blunt chest trauma patients using Tp-e interval, Tp-e/QT ratio and Tp-e/QTc ratio. METHODS:In this study, patients who applied to the emergency department due to blunt chest trauma were examined prospectively. The 12-lead ECG was performed to both blunt chest trauma and control group. ECG measurements of QT and Tp-e intervals were performed from both groups.RESULTS: A total of 81 participants; 41 blunt chest trauma patients and 40 healthy volunteers were included in this study. Tpe, Tpe/ QT, Tpe/QTc values were statistically significant in the trauma group compared to the control group (p<0.001). Although Tpe/QTc, max QT and min QT were statistically significant (p<0.05) in patients with a rib fracture, no difference was detected concerning Tpe, Tpe/QT compared to no-rib fracture group (p>0.05). CONCLUSION:Tp-e interval, Tp-e/QT ratio and Tp-e/QTc ratio in ECG predict the arrhythmias that may occur in blunt cardiac trauma, especially in blunt chest trauma patients.

Is There a Relationship Between TP-e/QT Ratio and Spinal Anesthesia-Related Cardiovascular Events in Pregnant Women?

“…While the median value was 0.2 in patients who did not use atropine, it was 0.235 in patients who used it, with no statistical difference (p=0.169). When the literature is examined, the TPe/ QT ratio was found to be less than 0.21 among healthy volunteers and 0.21 and above among patients with cardiac disease in the studies comparing healthy volunteers and populations with cardiac problems [14,15]. In our study, although it did not reach a statistically significant level, it was found to be above 0.21 in cases who developed intraoperative bradycardia and hypotension (patients who used intraoperative ephedrine and atropine due to hypotension), as well as in cases with a family history of heart disease.…”

Künt göğüs travmalı hastalarda Tp-e aralığı, Tp-e/QT oranı ve Tp-e/QTc oranının Klinik Önemi

“…As is known, cardiac lesions that may develop in patients after blunt thoracic trauma can vary in a wide spectrum ranging from an uncomplicated myocardial contusion to major vessel injuries (3,11). It is known that arrhythmias may occur following cardiac injuries that may develop after trauma (12).…”

“…Myocardial contusion, atrial fibrillation, myocardial rupture, rupture of the interventricular septum, and rupture of the tricuspid valve are the main conditions that can be seen after trauma (14,15). Recently, QT and its corrected QTc value have been explored in the literature as a good indicator of myocardial repolarization aberrations (3,16). Studies have shown that Tp-e/QTc is the myocardial repolarization parameter obtained by separating the time from the peak of the T wave on the ECG to the end of the Tp-e and Tp-e to the QT and QTc values, and it has been described as the transmural dispersion of repolarization.…”

“…Blunt chest injuries increase in parallel with the augmenting in the incidence of traffic accidents. The anterior chest wall and soft tissues are impacted by blunt traumas, and many injuries are benign and do not require hospitalization (2,3). Many complications can originate after blunt chest trauma.…”

“…Investigations have shown that potentially lethal arrhythmias may develop after blunt chest trauma (4). There are few studies in the literature evaluating Tp-e interval, Tp-e/QT ratio, and Tp-e/QTc ratio as headstones of cardiac arrhythmia in patients with blunt chest trauma (3). In this study, we desired to evaluate the cardiac arrhythmia risk in patients with blunt chest trauma, using the Tp-e interval, Tp-e/QT ratio and Tp-e/ QTc ratio as a potential cardiac arrhythmia marker.…”