Zhu Xuefang, Xu Xiuping, Wei Zhen, Zhu Zenghua
Xuefang Zhu, Department of Ultrasound, the third Hospital of Quzhou, 226 Baiyun North Avenue, Quzhou 324000, Zhejiang Province, P.R. China.
Xiuping Xu Department of the 3 Wards, the third Hospital of Quzhou, 226 Baiyun North Avenue, Quzhou 324000, Zhejiang Province, P.R. China.
Pak J Med Sci. 2022 Mar-Apr;38(4Part-II):1004-1008. doi: 10.12669/pjms.38.4.5342.
To evaluate right ventricular diastolic function in patients with coronary slow flow phenomenon (CSFP) by using Doppler tissue imaging (DTI).
CSFP 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.
No 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.
Right 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.
采用多普勒组织成像（DTI）评估冠状动脉慢血流现象（CSFP）患者的右心室舒张功能。
回顾性调查2019年6月至2020年12月在衢州市第三医院经冠状动脉造影诊断的CSFP患者，选取同期冠状动脉血流正常的患者作为对照组，数量与CSFP患者相似。通过DTI测量右心室收缩和舒张功能指标。
CSFP组与对照组在基线数据、右心室收缩末期内径、右心室舒张末期内径或右心室射血分数方面均无差异。CSFP患者右心室舒张早期的E峰速度降低，而右心室舒张晚期的a峰速度增加，导致E/a比值降低。
CSFP患者的右心室舒张功能降低，可通过DTI识别。DTI在评估CSFP患者右心室舒张功能方面具有重要应用价值。
