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KMID : 0389520120190010027
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Sleep Medicine.Psychophysiology
2012 Volume.19 No. 1 p.27 ~ p.34
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Heart Rate Variability and Lipid Profile in Patients with Major Depressive Disorder
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Ahn Eun-Jung
Choi Jin-Sook
Jang Yong-E
Sim Hyun-Bo
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Abstract
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Objectives: The analysis of heart rate variability (HRV) is a useful non-invasive tool to investigate the autonomic nerve function. Previous studies on the relationship between HRV and depression have been reported controversial results. Similarly, the correlation between the serum lipids and depression is debatable. The purpose of this study is to examine the relationship between heart rate variability, lipid profile and depression.
Methods: A total of 42 patients with major depressive disorder (MDD) and 32 age and sex-matched normal subjects who had no previous history of major medical and mental illnesses were recruited for this study. A structured-interview was used to assess the general characteristics and psychiatric illness. HRV measures were assessed by time-domain and frequency-domain analyses. Psychological symptoms were measured using the Hamilton rating scale for anxiety (HAM-A), Hamilton rating scale for depression (HAM-D). In addition, the evaluation for lipid profile was performed by blood test.
Results: In serum lipid profile test, MDD group showed higher cholesterol ( mg/dL vs. mg/dL, p=0.044), TG ( mg/dL vs. mg/dL, p=0.018), LDL ( vs. , p=0.004) level than normal control group. In HRV time domain analyses, the standard deviation of the NN interval (SDNN) was decreased in MDD group than normal control group, but was not significant ( ms vs. ms, p=0.078). ApEn (Approximate Entrophy) was significantly increased in MDD group than normal control group ( vs. , p<0.001). ApEn was correlated with LDL level (r=0.277, p=0.028), HAM-D scores (r=0.534, p<0.001) and HAM-A scores (r=0.470, p<0.001).
Conclusions: MDD patients showed increased ApEn, one of the HRV measurement. And this ApEn was correlated with LDL, HAM-D and HAM-A scores. In this study, the analysis of ApEn would be a useful test of MDD.
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KEYWORD
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Depression, Heart rate variability, Approximate Entrophy, Lipid
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