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鼻咽癌患者不同放疗剂量下心率变异与心电图改变的研究 被引量:2

Study of ECG changes and heart rate variability at different doses of radiotherapy in patients with nasopharyngeal carcinoma
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摘要 目的探讨鼻咽癌患者不同放疗剂量下心率变异性(HRV)、心电图变化情况。方法选取2011年1月至2014年12月行放射治疗的鼻咽癌患者101例,观察患者治疗前及不同放射剂量的放射治疗后心电图、HRV时域[NN间期标准差(SDNN)、NN间期均值标准差(SDANN)、相邻NN间期均值的均方根(r MSSD)和NN相邻间期差值超过50ms的心搏数所占百分比(p NN50)]以及频域[超低频功率(ULF)、极低频功率(VLF)、低频功率(LF)、高频功率(HF)、总功率(TP)]指标情况。结果鼻咽癌患者放射治疗前的室上性心律失常、室性心律失常及ST-T改变的发生情况与不同放射剂量治疗后相比,差异无统计学意义(P>0.05);与放射治疗前比较,鼻咽癌患者在不同剂量放射治疗后SDNN、r MSSD和p NN50均明显下降,差异有统计学意义(P<0.05),但是SDANN比较差异无统计学意义(P>0.05);患者55~65 Gy放射治疗后SDNN和r MSSD分别为(121.22±21.53)ms和(21.36±6.11)ms,明显低于放射治疗前和15~25 Gy和35~45 Gy放射治疗后(P>0.05);不同剂量放射治疗后p NN50比较差异无统计学意义(P>0.05);与放射治疗前比较,鼻咽癌患者不同剂量放射治疗后VLF明显升高,LF、HF及TP的指标明显下降(P<0.05),但是ULF放射治疗前后比较差异无统计学意义(P>0.05);患者55~65 Gy放射治疗后VLF、LF、HF和TP分别为(12 170.55±388.40)m V、(517.43±125.37)m V、(352.57±102.17)m V和(2 432.81±533.30)m V,均明显低于放射治疗前和15~25Gy和35~45 Gy放射治疗后(P>0.05)。结论对鼻咽癌患者进行心电图和心律变异性分析,能间接评价放疗患者的心脏自主神经功能,为临床治疗提供依据。 Objective To investigate the changes of heart rate variability (HRV) and electrocardiogram (ECG) in patients with nasopha-ryngeal carcinoma ( NPC) under different radiation doses. Methods From January 2014 to February 2016 , 101 patients with nasopharyngeal carcinoma who were treated in our hospital were selected. Electrocardiogram and HRV time domain, frequency domain indicators before treatment and after radiation therapy under different radiation dose were observed. Results There was no difference in ventricular arrhythmia, ventricular ar-rhythmia and ST - T changes before and after therapy ( P 〈0.05) ; pNN50, rMSSD and SDNN decreased after radiotherapy, the difference was statistically significant ( P 〈 0. 05) , but SDANN was not statistically significantly different ( P 〈 0 .0 5 ); After 55 - 65 Gy of radiation therapy in patientswith SDNNand rMSSD (121.22±21.53) ms and (21.36±6.11) ms were significantlylowerthanthatbeforeradiotherapyandafter 15-25 Gy and 35-45 Gy radiotherapy ( P 〈0. 05 ) . After different doses of radiotherapy difference of pNN50 was not statistically significant ( P 〈0. 05 ). VLF increased, LF, HF and TP decreased after radiotherapy ( P〈0.05) , but the difference of ULF was not statistically significant (P 〈0.05). Patients after 55 -65 Gy of radiation therapy VLF, LF,HF and TP (12170.55 ±388.40) mV, (517.43 ±125.37) mV, (352. 57 ± 102. 17) mV and (2432. 81 ± 533.30) mV,were significantly lower than before treatment and after 15 -25 Gy and 35-45 Gy radiation therapy ( P 〈0.05). Conclusion ECG and heart rate variability analysis of nasopharyngeal carcinoma patients can indirectly evaluate the radiological cardiac autonomic nerve function, provide the basis for clinical treatment.
出处 《临床和实验医学杂志》 2017年第11期1090-1093,共4页 Journal of Clinical and Experimental Medicine
基金 广西壮族自治区卫生厅自筹经费科研课题(编号:Z2011428) 广西医疗卫生重点科研课题(编号:2011117)
关键词 鼻咽癌 放疗 心电图 心率变异性 Nasopharyngeal carcinoma radiation therapy electrocardiogram heart rate variability
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