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Objective:To investigate the difference of heart rate variability in cardioinhibitory type vasovagal syncope(VVS-CI) children with different body mass index(BMI).Methods:Clinical data of thirty-four children with syncope or pre-syncope were retrospectively analyzed, who visited specialist clinic for syncope and diagnosed as VVS-CI at the Second Xiangya Hospital of Central South University from January 2012 to December 2019.BMI was calculated based on height and weight, and divided into lean group(BMI≤18.4 kg/m 2, n=19) and normal group(BMI 18.5-23.9 kg/m 2, n=15). Heart rate variability(HRV) of 24 h dynamic electrocardiogram was analyzed using linear analysis method.Time domain index included SDNN, SDANN, rMSSD and pNN50.Frequency domain index included total power(TP), ultra low frequency power(ULF), very low frequency power(VLF), low frequency power(LF), high frequency power(HF) and LF/HF. Results:There was no significant difference in SDNN, SDANN and rMSSD between lean and normal group( P>0.05), but pNN50 increased in lean group( P<0.05). No significant differences were found in TP, ULF, LF, HF and LF/HF between two groups( P>0.05), while VLF was lower in lean group than that in normal group( P<0.05). There was no statistical difference in time domain index and frequency domain index between different gender between lean and normal group( P>0.05). SDNN, SDANN and LF were higher in<12 years old than those in≥12 years old in lean group( P<0.05). There was no statistical difference in rMSSD, pNN50, TP, ULF, VLF, HF and LF/HF( P>0.05). ULF increased and LF decreased in<12 years old compared to ≥12 years old in normal group( P<0.05). No statistical differences were found in SDNN, SDANN, rMSSD, pNN50, TP, VLF, HF and LF/HF( P>0.05). Conclusion:The autonomic nervous regulation function of VVS-CI children with low BMI and normal BMI is different, resulting in HRV difference.There were also differences in HRV between<12 years old and ≥12 years old with the same BMI.
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Objective:To investigate the relationship between body mass index (BMI) and response time of cardioinhibitory type vasovagal syncope (VVS-CI) in children.Methods:The clinical data of 56 children with syncope or pre-syncope were retrospectively analyzed and they visited specialist clinic for syncope and were diagnosed as VVS-CI in the Second Xiangya Hospital, Central South University from December 2012 to September 2019.Based on height and weight, BMI was calculated, and divided into low BMI group (35 cases) and normal BMI group (21 cases). Between the 2 groups, baseline heart rate, head-up tilt test (HUTT) positive response heart rate, baseline head-up tilt test (BHUT) positive response time, and sublingual nitroglycerin-provocated HUTT (SNHUT) positive response time were compared.The correlation between BMI and positive response time was analyzed.SPSS 22.0 software was applied for statistical analysis.Results:There were no significant differences in age, sex, duration of disease and number of syncope between the 2 groups (all P>0.05). No significant differences were found in baseline heart rate and positive response heart rate between the 2 groups [(78.5±15.3) times/min vs.(72.8±8.7) times/min, t=1.223, P=0.230; (44.0±13.9) times/min vs.(47.0±10.0) times/min, t=-0.664, P=0.511]. Compared with normal BMI group, BHUT positive patients/SNHUT positive patients were higher in low BMI group (27/8 cases vs.9/12 cases, χ2=4.839, P=0.027), and the positive response time of BHUT was shorter [(13.1±4.6) min vs.(23.7±9.5) min, t=-2.691, P=0.023]. There were no significant differences in SNHUT positive response time between the 2 groups ( P>0.05). Low BMI was correlated with BHUT positive response time ( r=0.750, P=0.005). Normal BMI was not associated with BHUT positive response time ( r=0.316, P=0.217). There was no correlation between low BMI and normal BMI and SNHUT positive response time ( r=0.177, P=0.431; r=0.021, P=0.940). Conclusions:Low BMI is positively correlated with BHUT positive response time of children with VVS-CI.The time it takes for syncope occurrence was shorter in children with low BMI than that in normal BMI.
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Long-term tachycardia may cause tachycardiomyopathy(TCM),clinical manifestation is similar to the dilated cardiomyopathy.But,after treatment,cardiac function can be partially or completely recovered.By the explanation of definition,etiology,pathogenesis,diagnosis and treatment progress of TCM,the aim of the thesis is to enrich the knowledge of clinician about the diagnosis and treatment of TCM.
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Objective To explore the variation of serum galectin-3 and its correlation with ventricular remodeling in children with chronic cardiac failure (CHF). Methods Forty-ifve children with CHF were included and divided into cardiac function II group (n=10 ), III group (n=18 ), and IV group (n=17 ) according to the severity of CHF. The subjects were also divided into endocardial fibroelastosis (EFE) group (n=21 ) and dilated cardiomyopathy (DCM) group (n=24 ) according to primary disease. Thirty health children were included as control group. The level of serum galectin-3 was detected by ELISA. The level of serum NT-pro BNP was measured by radio immunoassay. The index of ventricular remodeling was detected by ultrasonic cardiogram. The correlation of the level of serum galectin-3 with ventricular remodeling and the level of serum NT-pro BNP were analyzed. Results In 45 children ( 19 males and 26 females) with CHF, the mean age was 3 . 42 ± 1 . 89 years. The levels of serum galectin-3 and NT-pro BNP were higher in cardiac function II group, III group, and IV group than those in control group (all P?0 . 05 ). Spearman rank correlation analysis showed that the level of serum galectin-3 was positively correlated with the left ventricular end diastolic diameter, the left ventricular mass, the left ventricular mass fraction, and the level of serum NT-pro BNP (all P?
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[Summary] In this study, PubMed, Embase, China National Knowledge Infrastructure, databases VIP Chinese Periodical Database, and Wanfang Chinese Periodical Database were systematically searched for the case-control study related β3-adrenergic receptor ( ADRB3 ) Trp64Arg gene polymorphism to overweight/obesity among children from 1962 to 2014.Twelve eligible studies with 2 222 overweight/obese children and 1 955 normal children were included according the uniform inclusion and exclusion criteria.Meta-analyses showed that Trp64Arg polymorphism was associated with significantly increased overweight/obesity risk in Arg carriers among children( OR=1.34,95%CI1.17-1.53).Afterstratificationforethnicity,highlysignificantcoorelationofTrp64Argpolymorphism to overweight/obesity in Asian children(OR=1.44, 95%CI 1.23-1.68) but not significant in Europe(OR=1.05, 95%CI 0.79-1.40).It suggested that Trp64Arg polymorphism is associated with overweight/obesity susceptibility in children.Our results support an strong association between Trp64Arg polymorphism and overweight/obesity among the Asian children investigated.
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ObjectiveTo study the changes and clinical significance of serum heart-type fatty acid-binding protein (H-FABP) and soluble ST2 protein (sST2) in children with chronic heart failure (CHF).MethodsThirty-nine children with CHF and 30 healthy children were recruited. Serum levels of H-FABP and sST2 were determined by ELISA, The left ventricular ejection fraction (LVEF) and fractional shortening of the left ventricle (LVFS) were measured by two-dimensional echocardiog-raphy.ResultsIn 39 children with CHF, 15 males and 24 females, aged 2 months to 14 years, included 27 cases of endocardial ifbroelastosis (EFE) and 12 cases of dilated cardiomyopathy (DCM). According to the cardiac functional grading standard, the children with CHF were divided into 10 cases with cardiac function II, 15 cases with cardiac function III, and 14 cases with cardiac function IV. The mean levels of H-FABP, sST2 and NT-Pro-BNP in children with CHF at stage of heart failure and heart failure remission were statistically higher than those in the healthy children (allP0.05). The Spearman correlation analysis showed that, in children with CHF at stage of heart failure, the serum H-FABP level was positively correlated with NT-Pro-BNP, sST2 and cardiac function (r=0.402、0.621、0.644,P<0.05). Serum sST2 level was positively correlated with NT-Pro-BNP and cardiac function (r = 0.501、0.678,P<0.05), and was negatively correlated with LVEF and LVFS (r=?0.340、?0.329, P<0.05).ConclusionsH-FABP and sST2 are involved in the development of heart failure. H-FABP and sST2 can be used as reference indices for clinical diagnosis and assessment of CHF.