论文部分内容阅读
目的通过对不同心功能分级心力衰竭患者心率减速力(DC)的测定,早期识别慢性心力衰竭(CHF)高危人群,尽早给予预防、治疗。方法选取2014年10月—2015年3月于中铁一局西安医院住院的CHF患者75例作为CHF组,同时选取同期心功能正常者73例作为对照组,对所选人群行动态心电图检查,检测DC值、进行危险分层,行超声心动图检查,测量左心室舒张末期内径(LVEDd)、计算左心室射血分数(LVEF)。比较CHF各亚组之间DC、LVEDd、LVEF,各危险分层患者心血管事件发生率。结果心功能Ⅱ级、Ⅲ级、Ⅳ组间DC、LVEDd、LVEF比较,差异有统计学意义(P<0.05)。DC低危组、中危组、高危组心源性猝死、恶性心律失常、心力衰竭再住院发生率比较,差异有统计学意义(P<0.05)。结论 CHF患者DC值明显降低,且随着心功能的恶化而下降,DC值不仅能反映心力衰竭的严重程度,而且可作为评估近期预后的指标。
OBJECTIVE: To early measure the risk of heart failure (DC) in patients with different heart function grading and to early identify and treat the high risk group of chronic heart failure. Methods Seventy-five CHF patients hospitalized in Xi’an Hospital of China Railway First Bureau from October 2014 to March 2015 were selected as the CHF group. Meanwhile, 73 patients with normal cardiac function in the same period were selected as the control group. The dynamic electrocardiogram (ECG) DC value, risk stratification, line echocardiography, left ventricular end-diastolic diameter (LVEDd), left ventricular ejection fraction (LVEF) was calculated. The incidences of cardiovascular events among DC, LVEDd, LVEF and risk stratification patients were compared between CHF subgroups. Results There were significant differences in DC, LVEDd and LVEF between grade Ⅱ, grade Ⅲ and Ⅳ of cardiac function (P <0.05). The incidence of sudden cardiac death, malignant arrhythmia, and rehospitalization of heart failure in DC low-risk group, moderate-risk group and high-risk group were statistically significant (P <0.05). Conclusion The DC value of CHF patients decreased significantly and decreased with the deterioration of cardiac function. The DC value not only can reflect the severity of heart failure, but also can be used as an index to evaluate the prognosis in the near future.