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Cardiac autonomic modulation in response to a glucose stimulus.
Gilberto Perpiñan1,2, Erika Severeyn3, Sara Wong4
1Faculty of Electronic and Biomedical Engineering, Antonio Nariño University, Cartagena, Colombia. gilberto.perpinan@uan.edu.co.
Medical & Biological Engineering & Computing
|October 24, 2018
Summary
Metabolic syndrome patients show cardiac autonomic imbalance after glucose intake, with increased sympathetic and decreased parasympathetic activity. This study used heart rate variability (HRV) to assess these effects.
Area of Science:
- Cardiology
- Metabolic Health
- Autonomic Nervous System Research
Background:
- Hyperglycemia and hyperinsulinemia can impact cardiac autonomic control.
- Heart rate variability (HRV) analysis provides insights into autonomic modulation.
- Understanding these effects is crucial for individuals with metabolic syndrome.
Purpose of the Study:
- To investigate the impact of acute hyperglycemia on cardiac autonomic modulation.
- To compare HRV responses to an oral glucose tolerance test (OGTT) in metabolic syndrome, marathon runners, and controls.
- To assess the role of ECG in evaluating glucose-induced autonomic changes.
Main Methods:
- Conducted an oral glucose tolerance test (OGTT) with 30-minute glucose and insulin measurements.
- Analyzed 5-minute ECG recordings for time-domain and frequency-domain HRV measures.
- Included subjects with metabolic syndrome, marathon runners, and a healthy control group.
Main Results:
- Subjects with metabolic syndrome exhibited increased sympathetic and decreased parasympathetic tone post-glucose load.
- HRV measures indicated a significant autonomic imbalance in the metabolic syndrome group.
- Marathon runners and control groups showed different HRV responses compared to the metabolic syndrome group.
Conclusions:
- Acute hyperglycemia and hyperinsulinemia disrupt cardiac autonomic modulation in individuals with metabolic syndrome.
- HRV analysis is a valuable tool for assessing glucose-induced autonomic changes.
- Findings highlight the cardiovascular implications of metabolic dysfunction.
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