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Published on: June 5, 2019
Heart Rate Variability Analysis of Healthy Individuals and Patients with Ischemia and Arrhythmia
Galya Georgieva-Tsaneva1, Evgeniya Gospodinova1
1Institute of Robotics, Bulgarian Academy of Science, 1113 Sofia, Bulgaria.
Insights
Treatment improved heart rate variability (HRV) in patients with ischemia and arrhythmia. Key HRV parameters, including SDNN and RMSSD, showed significant increases, indicating better cardiac function after intervention.
Area of Science:
- Cardiology
- Biomedical Engineering
- Medical Informatics
Background:
- Arrhythmia and ischemic heart disease are significant cardiovascular conditions affecting cardiac activity.
- Assessing heart rate variability (HRV) provides crucial insights into autonomic nervous system function and cardiovascular health.
- Established cardiology information systems aid in the analysis of complex physiological signals like Holter monitoring data.
Purpose of the Study:
- To evaluate the impact of treatment on cardiac activity in patients with arrhythmia and ischemic heart disease.
- To compare HRV parameters between patients and a healthy control group.
- To assess the utility of an information demonstration cardiology system in analyzing cardiac recordings.
Main Methods:
- Utilized long-term (approx. 24h) Holter monitoring to record cardiac activity during daily life.
- Employed an established information demonstration cardiology system for signal processing and analysis.
- Applied linear, non-linear, and graphical methods to analyze heart rate variability (HRV).
Main Results:
- Significant increases observed in time-domain HRV parameters (SDNN, SDANN, RMSSD, SDNN index, HRVTi) in both ischemic and arrhythmia patient groups post-treatment.
- Non-linear HRV parameters (e.g., alpha) also showed improvement in both patient cohorts.
- The information system effectively processed and analyzed complex cardiac data for diagnostic insights.
Conclusions:
- Treatment positively impacts cardiac autonomic function, as evidenced by improved HRV parameters in patients with ischemia and arrhythmia.
- The analyzed HRV metrics demonstrate the effectiveness of the intervention in enhancing cardiac regulation.
- The information demonstration cardiology system is a valuable auxiliary tool for diagnosing and managing cardiovascular diseases.
Abstract:
This article presents the results of a study of the cardiac activity of patients diagnosed with arrhythmia and ischemic heart disease. The obtained results were compared with the results obtained from a healthy control group. The studies were conducted on long-term cardiac recordings (approximately 24 h) registered by means of Holter monitoring, and the observations were made in the daily activities of the individuals. All processing, analysis and evaluations on the registered signals were performed by means of an established information demonstration cardiology system. The mathematical analysis included linear, non-linear and graphical methods for estimating and analyzing heart rate variability (HRV). Re-examinations were carried out on some of the observed individuals after six months of treatment. The results show an increase in the main time domain parameters of the HRV, such as the SDNN (from 86.36 ms to 95.47 ms), SDANN (from 74.05 ms to 82.14 ms), RMSSD (from 5.1 ms to 6.92 ms), SDNN index (from 52.4 to 58.91) and HRVTi (from 12.8 to 16.83) in patients with ischemia. In patients with arrhythmia, there were increases in the SDNN (from 88.4 ms to 96.44 ms), SDANN (from 79.12 ms to 83.23 ms), RMSSD (from 6.74 ms to 7.31 ms), SDNN index (from 53.22 to 59.46) and HRVTi (from 16.2 to 19.42). An increase in the non-linear parameter α (from 0.83 to 0.85) was found in arrhythmia; and in α (from 0.80 to 0.83), α1 (from 0.88 to 0.91) and α2 (from 0.86 to 0.89) in ischemia. The presented information system can serve as an auxiliary tool in the diagnosis and treatment of cardiovascular diseases.
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