非器質(zhì)性室性期前收縮與心率變異性和心功能的相關(guān)性分析
[Abstract]:Premature Ventricular Contraction (PVC) is a common arrhythmia in premature beats. Preventricular contraction can occur in normal people and people with various organic heart diseases. Objective: To investigate the circadian rhythm of non-organic premature ventricular contraction (NVPS) and the effects of different loads of NVPS on heart rate variability (HRV) and left ventricular function in patients with NVPS. A total of 135 patients (72 males and 63 females) with non-organic premature ventricular contraction (NVPS) were investigated by ambulatory electrocardiogram (AECG) and medical history from September 2015 to January 2017 in the outpatient and inpatient departments of Chaoyang Central Hospital, Liaoning Province. Patients with organic premature ventricular systole 2.1 were divided into three groups according to different loads of non-organic premature ventricular systole: low-load group 85 (10%), medium-load group 34 (10%-20%) and high-load group 16 (20%). The non-organic premature ventricular systole was divided into daytime group (78 cases) and night group (57 cases). daytime group: the number of non-organic premature ventricular systole in daytime accounted for more than 50% of the total number of non-organic premature ventricular systole in the whole day. nocturnal group: the number of non-organic premature ventricular systole in the whole day accounted for more than 50%. The time domain indexes of heart rate variability (HRV) were compared between daytime and nighttime groups, and their correlation was analyzed. 2.3 According to the 24-hour data of dynamic electrocardiogram, the occurrence times of pre-ventricular systole in each time period (01:00-24:00) were recorded. The circadian rhythm of non-organic premature ventricular systole and the circadian rhythm of non-organic premature ventricular systole in daytime group and nighttime group. 3.1 103 patients with cardiac Doppler echocardiography were divided into three groups according to different loads of non-organic premature ventricular systole: 66 patients with low load (10%) and 25 patients with medium load (25%). Left Atrial Diameter (LAD), Interventricular Septum Thickness (IVST), Left Ventricular End Diastolic Diameter (LVEDD), Left Ventricular Posterior Wall Thickness (LVPT) were analyzed in 12 patients (20%) with high load and 10% ~ 20% with high load. Wall thickness, LVPW, left ventricular ejection fraction (LVEF) and other cardiac function indicators. 3.2 According to the time of ambulatory electrocardiogram, 58 patients were divided into day group (06:00-18:00) and 45 patients were divided into night group (18:00-06:00). The effects of pre-ventricular systole on left atrial diameter (LAD), interventricular septal thickness (IVST), left ventricular end-diastolic diameter (LVEDD), left ventricular posterior wall thickness (LVPW), left ventricular ejection fraction (LVEF) and other cardiac function indices were analyzed by SPSS 19.0 statistical software. The measurements were expressed by mean (+) standard deviation (sx (+). Results: 1 135 patients with non-organic premature ventricular systole were compared in clinical data. 1. Comparison of basic data of heart rate variability, age and sex in patients with different loads of premature ventricular systole There was no significant difference among the three groups (P 0.05), but there was significant difference in the total number of ventricular premature contractions among the three groups (P 0.01). There was no significant difference in the total number of premature ventricular contractions between the two groups (P 0.05). The clinical data of 2 103 patients with non-organic premature ventricular contractions were compared. 2.1 There was no significant difference in cardiac function between the three groups of age and sex (P 0.05), but there was no significant difference in the total number of premature ventricular contractions among the three groups of different load. There was no significant difference in age, sex and total number of non-organic premature ventricular systoles between the two groups (P 0.05). 3 135 patients with non-organic premature ventricular systoles had no significant difference (P 0.05). Comparison of heart rate variability in pre-systolic patients 3.1 Comparison of heart rate variability between different non-organic pre-ventricular systolic loads showed that there was no significant difference between the three groups (P 0.05). SDANN values gradually decreased with the increase of non-organic premature ventricular systolic load (P 0.05). There were significant differences in SDANN indexes between low and medium load (P 0.05), and between low and high load (P 0.05). SDANN values gradually decreased with the increase of non-organic premature ventricular systolic load. There was no significant difference in heart rate variability between 2-day non-organic premature ventricular systole and nocturnal non-organic premature ventricular systole (P 0.05). There was significant difference in r-MMSD between 2-day non-organic premature systole and nocturnal non-organic premature ventricular systole (P 0.05). The frequency of non-organic premature ventricular contraction with high load reached its peak at about 10:00 a.m. and its peak at about 1:00 a.m. The frequency of non-organic premature ventricular contraction with daytime predominance also reached its peak at about 10:00 a.m. and at 1:0 a.m. The number of nocturnal non-organic premature ventricular contractions peaked at about 1:00 a.m. and reached a low at about 13:00 p.m. There was no significant difference in LAD, IVST, LVEDD and LVPW between low load group and high load group (P 0.05). There was significant difference in LVEF between low load group and high load group (P 0.05). There was no significant difference in left atrial diameter (LAD), interventricular septal thickness (IVST), left ventricular end-diastolic diameter (LVEDD), left ventricular posterior wall thickness (LVPW), left ventricular ejection fraction (LVEF) between the two groups (P CONCLUSION: 1. With the increase of non-organic premature ventricular systolic load, the values of 65 Compared with patients with premature ventricular systole, the nocturnal r-MMSD index was significantly lower, mainly related to parasympathetic nerve damage; 3 Non-organic premature ventricular systole showed circadian rhythm changes. With the increase of non-organic premature ventricular systolic load, the frequency of premature ventricular systole also increased. 4 With non-organic premature ventricular systolic load. The left ventricular ejection fraction (LVEF) decreased gradually with the increase of LVE ejection fraction (LVEF). Non-organic pre-ventricular systole (NVP) and nocturnal non-organic pre-ventricular systole (NVP) had little effect on LV function.
【學(xué)位授予單位】:承德醫(yī)學(xué)院
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2017
【分類號】:R541.7
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