Abstract：Objective To investigate the clinical value of P wave terminal force in lead V1（PtfV1） among patients with cardiac insufficiency and the relationship between PtfV1and left ventricular ejection fraction （LVEF）.Methods A total of 87 patients with cardiac insufficiency were selected as experimental group who had been admitted by the department of cardiology in our hospital. Another 85 cases of healthy people were enrolled as control group. We measured and calculated their PtfV1 in body surface ECG and LVEF in echocardiogram. The differences of the two indices were compared between experimental and control groups. At the same time, we compared the changes of PtfV1 in experimental group with mild, moderate and severe decline of LVEF[(40-50)%,(30-40)%, and (＜30%)] respectively as well as the index separately between the three subgroups in experimental group and control group. Results (i) The LVEF value of experimental group was significantly lower than that of control group[(37.32±8.36)% vs. (60.79±6.56)%, P＜0.05], and so was PtfV1 value[(－0.067±－0.021) mm·svs. (－0.017±－0.009) mm·s, P＜0.05]. (ii) Among the patients separately with mild, moderate and severe decline of LVEF, PtfV1 value orderly decreased[(－0.047±－0.007) mm·s, (－0.071±－0.010) mm·s, and (－0.095±－0.013) mm·s]. The PtfV1 value in each of the three subgroups was lower than that in control group, with statistically significant difference(P＜0.05). It indicated that PtfV1 reduced with the decrease of LVEF. Conclusion In the patients with cardiac insufficiency, PtfV1 declines significantly with the decrease of LVEF and the index is positively correlated with the severity of cardiac insufficiency. Therefore,PtfV1 can be applied in evaluating the severity of cardiac insufficiency as a practical index.
江山, 周贝贝, 王付. 心电图V1导联P波终末电势与心功能不全的相关性研究[J]. 实用心电学杂志, 2016, 25(3): 201-203.
JIANG Shan, ZHOU Bei-Bei, WANG Fu. The relativity between P wave terminal force in lead V1 and cardiac insufficiency. JOURNAL OF PRACTICAL ELECTROCARDIOLOGY, 2016, 25(3): 201-203.
[1] Morris JJ Jr, Estes EH Jr, Whalen RE, et al. P-wave analysis in valvular heart disease[J]. Circulation, 1964,29（4）：242-252.[2] Liu G, Tamura A, Torigoe K, et al. Abnormal P-wave terminal force in lead V1 is associated with cardiac death or hospitalization for heart failure in prior myocardial infarction[J]. Heart Vessels, 2013, 28(6)：690-695.[3] 徐广志, 王文娟, 张树龙, 等. 心电图V1导联P波终末电势与HATCH评分的相关性分析[J]. 中华心律失常学杂志, 2014, 18(4)：287-290.[4] 王辉, 孙勇. 心电学技术[M]. 北京：人民卫生出版社, 2006：55.[5] 叶任高, 陆再英, 谢毅, 等. 内科学[M]. 北京：人民卫生出版社, 2007：161.[6] LloydJones D, Adams R, Carnethon M, et al. Heart disease and stroke statistics-2009 update：a report from the American Heart Association Statistics Committee and Stroke Statistics Subcommittee[J]. Circulation, 2009, 119(3)：480-486.[7] 刘少波, 刘华荣, 李建中, 等. 原发性高血压左心结构改变患者的PTFv1改变与心律失常的关系[J]. 广东医学院学报, 2000, 18(3)：243-244.[8] Chhabra L, Chaubey VK, Kothagundla C, et al. Pwave indices in patients with pulmonary emphysema:do Pterminal force and interatrial block have confounding effects?[J]. Int J Chron Obstruct Pulmon Dis, 2013，8(3)：245-250.[9] 冯立军, 唐晶, 祁莉, 等. 心电图Ptfv1值与多普勒超声心动图对左心室肥大的诊断价值[J]. 中国老年学杂志, 2014, 34(1)：109-110.[10] 李多, 刘麒, 李凤杰, 等. PtfV1在心衰患者的应用价值[J]. 临床心电学杂志, 2015, 24(4)：274-277.
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