外伤性骨折患者心率减速力分析

Analysis of deceleration capacity of rate in patients with traumatic fracture

目的探讨外伤性骨折患者心率减速力(deceleration capacity of rate,DC)的变化及其与心率变异性(heart rate variability,HRV)的相关性。方法选择外伤性骨折患者60例,根据年龄分为Ⅰ组(40～60岁)、Ⅱ组(61～80岁),两组患者均进行24h动态心电图检测并计算DC及HRV等各项指标。结果Ⅰ组DC为(6.08±1.74)ms;Ⅱ组DC为(5.13±0.82)ms;DC与HRV指标SDNN、rMSSD、pNN50、HF等呈正相关(P<0.01),与HR呈负相关。结论外伤性骨折患者DC指标和HRV指标相关性较好,DC可独立作为自主神经功能检测的指标。

Objective To explore the change of deceleration capacity of rate(DC) in patients with traumatic fracture and the correlation between DC and heart rate variability (HRV).Methods 60 cases of patients with traumatic fracture were divided into two groups according to their ages: Group I(age 40-60) and Group Ⅱ(age 61-80). Both of groups were detected by dynamic electrocardiogram for 24 hours and calculated the DC and HRV indexes.Results DC of Group I was (6.08±1.74) ms;DC of Group Ⅱ was (5.13±0.82) ms;DC was positively correlated with HRV indexes such as SDNN, rMSSD, pNN50 and HF(P&lt;0.01), and was negatively correlated with HR. Conclusion There was a good correlation between indexes of DC and HRV in patients with traumatic fracture. DC can independently be an index of the autonomic nerve function tests.