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Relationship between Serum Bilirubin and Left Ventricular Hypertrophy in Patients with Essential Hypertension
Tao Zhou1, Xiaofang Chen2, Zhanzhan Li3
1Department of Cardiology, the Third Affiliated Hospital, Southern Medical University, Guangzhou, Guangdong Province, China.
Insights
Lower serum bilirubin levels are linked to left ventricular hypertrophy (LVH) in new hypertension patients. This suggests bilirubin may serve as a novel risk marker for LVH in essential hypertension.
Area of Science:
- Cardiology
- Clinical Biochemistry
Background:
- Prospective studies indicate low bilirubin levels predict cardiovascular events.
- The association between serum bilirubin and left ventricular hypertrophy (LVH) in essential hypertension requires further investigation.
Purpose of the Study:
- To evaluate the relationship between serum bilirubin levels and LVH in newly diagnosed hypertension patients.
Main Methods:
- A study of 344 newly diagnosed hypertensive patients, divided into LVH (n=138) and non-LVH (n=206) groups.
- Utilized physical examination, laboratory tests, and echocardiography.
- Employed multivariate logistic regression to assess the association between serum bilirubin and LVH.
Main Results:
- Patients with LVH exhibited lower serum bilirubin levels compared to those without LVH.
- Serum total bilirubin showed a negative association with left ventricle mass index (LVMI) (B=-0.017, P=0.008), even after adjusting for confounders.
- Serum total bilirubin was independently associated with LVH, acting as a protective factor (OR=0.91, P=0.010).
Conclusions:
- Serum bilirubin may serve as a novel, readily available marker for assessing LVH risk in hypertensive individuals.
- Further large-scale cohort studies are warranted to confirm these findings.
Background:
Prospective studies have found low bilirubin levels were an important predictive factor of cardiovascular events. However, few have yet investigated possible association between serum bilirubin level and LVH in essential hypertension. The aim of the present study was to evaluate the relationship between serum bilirubin levels with LVH in newly diagnosed hypertension patients.
Methods:
The present study evaluated the relationship between serum total bilirubin level and left ventricle hypertrophy (LVH) in newly diagnosed hypertensive patients with a sample size of 344. We divided subjects into LVH group (n=138) and non-LVH group (n=206). Physical examination, laboratory tests and echocardiography were conducted. The multivariate logistic regression model was used to verify the independent association between RDW and LVH.
Results:
Our results found that patients with LVH had lower bilirubin levels than non-LVH ones. Stepwise multiple linear regression analysis showed total bilirubin level (B=-0.017, P=0.008) was negatively associated with left ventricle mass index (LVMI) even adjusting for some confounders. The multiples logistic regression found total bilirubin level was independently related with of LVH, as a protective factors (OR=0.91, P=0.010).
Conclusion:
As a routine and quick laboratory examination index, serum bilirubin may be treated as novel marker for evaluating LVH risk in hypertensive patients. Cohort study with larger sample size are needed.
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