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ORIGINAL RESEARCH
Year : 2022  |  Volume : 6  |  Issue : 2  |  Page : 100-107

Echocardiographic Assessment of Right Ventricular Systolic Function in Postoperative Tetralogy of Fallot Patients with Special Emphasis on Right Ventricular-Global Longitudinal Strain


Department of Pediatric Cardiology, Fortis Escorts Heart Institute, New Delhi, India

Correspondence Address:
Dr. Mohammad Moaaz Kidwai
Flat No – G3, Ground Floor, Alhamd Gulmohar Suites, New Sir Syed Nagar, Aligarh - 202 002, Uttar Pradesh
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/jiae.jiae_60_21

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Background: Limitations of echocardiography have long been known for the assessment of right ventricular (RV) systolic function in postoperative tetralogy of Fallot (TOF) patients. In this study, we evaluated the role of RV-global longitudinal strain (GLS) for the assessment of RV systolic function. Materials and Methods: It was a single institution prospective observational study of ninety postoperative TOF patients. Detailed 2-dimensional echocardiography along with RV-GLS using speckle tracing imaging was done at baseline and after 1 year. The children were divided into three groups based on duration since total correction, i.e., group A (6 months to 5 years), group B (6–10 years), and group C (>10 years) to assess the differences in RV systolic function. Furthermore, correlation of RV-GLS with RV-fractional area change (FAC), tricuspid annular plane systolic excursion, and tricuspid valve tissue Doppler imaging s' velocity was done. Results: In group A patients, a statistically significant increase in RV systolic function was seen over a period of 1 year. However, in group B and C patients, no significant change was seen. There was a strong positive correlation of RV-GLS only with RV-FAC during the first follow-up (r = 0.41, P < 0.01) and second follow-up periods (r = 0.67, P < 0.01). Conclusion: RV-GLS has a strong positive correlation with RV-FAC, and it detects preclinical regional myocardial dysfunction even when the RV-FAC is normal and thus must be included in the evaluation of postoperative TOF children.


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