The relation study between serum bilirubin and diastolic cardiac dysfunction in heart failure with preserved ejection fraction patients
YUAN Bo
REN Hui
GONG Jie
LI Jing
ZHENG Shikang
WANG Jiawen
WANG Rui
GAO Tianlin
Abstract：Objective To investigate the correlation between serum bilirubin level and diastolic dysfunction in pa -tients with heart failure (HFpEF) with normal ejection fraction.Methods From 2014 January to 2014 December, 80 patients with HFpEF were enrolled .According to the results of ultrasound examination , patients were divided into 3 subgroups:mild subgroup with 13 cases, moderate sub group with 44 cases, severe sub group with 23 cases, 30 cases of healthy physical ex-amination were selected as healthy control group .Left atrial diameter , left ventricular end diastolic diameter , left ventricular ejection fraction, left ventricular end diastolic volume , E peak, A peak, early diastolic mitral annular velocity were measured by echocardiography , and E/Ea values were calculated .The relationship between bilirubin level and cardiac ultrasound and the results of echocardiography were analyzed .Results Moderate sub group and severe subgroups ’ total bilirubin ( TB) and direct bilirubin (DB) were significantly higher than those of healthy control group (TB in moderate subgroups:t =1.732, P =0.045;TB in severe sub group:t =2.032, P =0.025.DB in moderate subgroups:t =2.732, P =0.007;TB in severe sub group:t =2.036, P =0.026), comparison within HFpEF group, severe HFpEF subgroup’s serum TB and dB was sig-nificantly lower than that of the mild sub group (TB:t =1.715, P =0.047;DB:t =2.032, P =0.024).HFpEF group’s EA peak was significantly lower than that in healthy control group ( t =0.010, P =0.017) and E /EA was higher than that of healthy control group ( t =0.022, P =0.032).Severe subgroup’s EA peak and E /EA were significantly lower than mild sub group (EA peak:t =2.079, P =0.023;E /EA:t =2.411, P =0.011).A negative correlation between TB and DB levels and E/Ea were existed ( r =-0.401, P =0.040;r =-0.434, P =0.030).By multivariate stepwise regression analysis showed that serum level of TB can be as an independent variable into e peak ( P =0.003 ) and EA peak ( P =0.003) respectively as the dependent variable for linear regression equation .Conclusion Bilirubin level is closely related to ventricular diastolic function , which may be an important risk factor in the pathogenesis of HFpEF .
Keywords：BilirubinHeart failurepreserved ejection fractionDiastolic functionClinical significance
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 1003-1006 )