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Year : 2021  |  Volume : 31  |  Issue : 1  |  Page : 11-16

Can Tei index predict high syntax score in patients with chronic coronary syndrome and normal left ventricular systolic function?

1 Department of Cardiology, Faculty of Medicine, Ain Shams University, Cairo, Egypt
2 Department of Internal Medicine, National Research Center, Cairo, Egypt

Correspondence Address:
Hazem Mansour
Department of Cardiology, Faculty of Medicine, Ain Shams University, Cairo
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/jcecho.jcecho_73_20

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Objective: Some patients who had chronic coronary syndrome (CCS) and were recognized as low risk, however, developed cardiovascular events, whereas others who were categorized as high risk did not develop any cardiovascular events. Invasive coronary angiography is the gold standard tool for the assessment of coronary artery disease (CAD) severity. The SYNTAX score (SS) was recently recognized as an invasive angiographic-guided scoring system used in risk stratification of patients who have more than one-vessel CAD and undergoing revascularization with percutaneous cardiovascular intervention. It has a good predictive value of adverse cardiovascular events. Exploration for unique noninvasive modalities that may help in a better way for risk stratification of CCS patients by predicting the severity of CAD (as reflected by SS) would be of a paramount value. Tei index is a promising modality for that objective, which is a Doppler-derived time interval index that combines both systolic and diastolic cardiac performance. Methods: We examined the relationship between the severity of CAD as assessed by the SS and Tei index in 100 patients with CCS and normal left ventricular systolic function. Results: All the studied 100 patients had a normal ejection fraction with mean = 58.92 ± 7.88; the mean value of Tei index was 0.84 ± 0.26. There was a statistically significant positive association between Tei index and SS (P = 0.0001); moreover, there was a correlation between left anterior descending (LAD) affection and Tei index (P = 0.0001).The cutoff point of Tei index to detect SS above 22 was >0.93 (with specificity of 86.5% and sensitivity of 42.4%). Conclusion: Tei index significantly correlates with SS and LAD affection. Moreover, it is a cheap, radiation-free, noninvasive technique and may be used as a further risk stratification modality beyond others.

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