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Heart rate variability and metabolic syndrome in hospitalized patients with schizophrenia.
MedLine Citation:
PMID:  22310863     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
PURPOSE: Reduced heart rate variability significantly increases cardiovascular mortality. Metabolic syndrome increases the cardiac autonomic dysfunction. Recently, increasing cardiovascular mortality has been reported in patients with schizophrenia. This study was done to compare heart rate variability between adults with and without schizophrenia and to compare the relationship of heart rate variability to metabolic syndrome in hospitalized patients with schizophrenia.
METHODS: This was a descriptive and correlational study in which 719 adults without schizophrenia and 308 adults with schizophrenia took part between May and June 2008. We measured the following: five-minute heart rate variability; high-frequency, low-frequency, the ratio of low-frequency to high-frequency, and the Standard Deviation of all the normal RR intervals. Data was also collected on metabolic syndrome, abdominal obesity, triglycerides, HDL cholesterol, blood pressure and fasting glucose.
RESULTS: The Standard Deviation of all the normal RR intervals values of heart rate variability indices were 1.53±0.18. The low-frequency and high-frequency values of heart rate variability indices were significantly higher in hospitalized patients with schizophrenia (3.89±1.36; 3.80±1.20) than those in the healthy participants (2.20±0.46; 2.10±0.46). There were no significant differences between the schizophrenic patients with and without metabolic syndrome.
CONCLUSION: The results of this study indicate that schizophrenia patients have significantly lower cardiac autonomic control, but they have significantly higher low-frequency and high-frequency values than those of healthy adults. Use of antipsychotic drug may affect the autonomic nervous system in schizophrenic patients. Metabolic syndrome was not associated with cardiac autonomic control in schizophrenia patients.
Authors:
Kyunghee Lee; Jeongeon Park; Jeongim Choi; Chang Gi Park
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of Korean Academy of Nursing     Volume:  41     ISSN:  2093-758X     ISO Abbreviation:  J Korean Acad Nurs     Publication Date:  2011 Dec 
Date Detail:
Created Date:  2012-02-07     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101488689     Medline TA:  J Korean Acad Nurs     Country:  Korea (South)    
Other Details:
Languages:  eng     Pagination:  788-94     Citation Subset:  IM; N    
Affiliation:
College of Nursing, Keimyung University, Daegu, Korea. khl645@kmu.ac.kr.
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