International journal of medical sciences · 2026
Changes of the QRS-T angle in Patients Undergoing Transcatheter Aortic Valve Implantation.
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Amirie Scharbanu, Zadeh Behnam, Bruder Oliver, Schmitz Thomas, Toischer Karl, Jensen Christoph Julian
Аннотация
OBJECTIVE: This study aimed to investigate changes in the frontal QRST angle in patients who underwent transcatheter aortic valve implantation (TAVI).
BACKGROUND: The QRS-T angle is a prognostic marker in several clinical settings. The impact of TAVI on the QRS-T angle, especially in the long term, has not been investigated thus far.
METHODS: A total of 104 patients undergoing transcatheter aortic valve replacement due to severe aortic stenosis underwent a standardized digital 12-lead ECG for the calculation of the QRS-T angle before and 24 h after the intervention, as well as 30 days after the intervention.
RESULTS: There was a significant and dynamic change in the QRS-T angle during the TAVI procedure. An initial increase in the number of patients with a wider QRS-T angle (>90°) was notable immediately after valve replacement. After 30 days, there was a significant decrease in the number of patients with a wide QRS T-angle.
CONCLUSION: The QRS-T angle widens early after transcatheter aortic valve replacement and improves below the baseline during a 3 months follow-up. This could be related to the cardiacischemic stress during valve intervention. In contrast, QRS-T angle narrowing during follow-up might reflect the normalization of left ventricular hemodynamics and prognostic improvement.
BACKGROUND: The QRS-T angle is a prognostic marker in several clinical settings. The impact of TAVI on the QRS-T angle, especially in the long term, has not been investigated thus far.
METHODS: A total of 104 patients undergoing transcatheter aortic valve replacement due to severe aortic stenosis underwent a standardized digital 12-lead ECG for the calculation of the QRS-T angle before and 24 h after the intervention, as well as 30 days after the intervention.
RESULTS: There was a significant and dynamic change in the QRS-T angle during the TAVI procedure. An initial increase in the number of patients with a wider QRS-T angle (>90°) was notable immediately after valve replacement. After 30 days, there was a significant decrease in the number of patients with a wide QRS T-angle.
CONCLUSION: The QRS-T angle widens early after transcatheter aortic valve replacement and improves below the baseline during a 3 months follow-up. This could be related to the cardiacischemic stress during valve intervention. In contrast, QRS-T angle narrowing during follow-up might reflect the normalization of left ventricular hemodynamics and prognostic improvement.