• Xuefang Zhu, Xiuping Xu, Zhen Wei, and Zenghua Zhu.
• Xuefang Zhu, Department of Ultrasound, the third Hospital of Quzhou, 226 Baiyun North Avenue, Quzhou 324000, Zhejiang Province, P.R. China.
• Pak J Med Sci. 2022 Mar 1; 38 (4Part-II): 1004-1008.

ObjectivesTo evaluate right ventricular diastolic function in patients with coronary slow flow phenomenon (CSFP) by using Doppler tissue imaging (DTI).MethodsCSFP patients diagnosed using coronary angiography from June 2019 to December 2020 at the third Hospital of Quzhou were retrospectively investigated, with a similar number of patients with normal coronary blood flow during the same period taken as the control group. Right ventricular systolic and diastolic function index was measured via DTI.ResultsNo differences were found between CSFP and control groups in terms of baseline data, RV end systolic diameter, RV end diastolic diameter, or RV ejection fraction. The peak velocity E in the early diastolic phase of the right ventricle was decreased in CSFP patients, while the peak velocity a in the late diastolic phase of the right ventricle was increased, resulting in a lower E / a ratio.ConclusionsRight ventricular diastolic function in patients with CSFP is decreased, and this can be identified using DTI. DTI has important applicative value for evaluating right ventricular diastolic function in patients with CSFP.Copyright: © Pakistan Journal of Medical Sciences.

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