ArticleInternational journal of medical sciences2026
Changes of the QRS-T angle in Patients Undergoing Transcatheter Aortic Valve Implantation.
Article in International journal of medical sciences, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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6 authors.
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Abstract
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.
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