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[Biorthythmological risk factors for progression of coronary heart disease]
Insights
Seasonal and birth-date related cycles significantly impact coronary heart disease (CHD) progression. Winter and autumn, along with specific birth-trimesters, show increased angina and ischemia in patients with CHD.
Area of Science:
- Cardiology
- Chronobiology
- Internal Medicine
Context:
- Coronary heart disease (CHD) progression is influenced by various factors.
- Understanding the impact of individual annual cycles (IAC) and seasons on CHD is crucial for patient management.
Purpose:
- To investigate the role of seasons and specific periods within an individual annual cycle (IAC) on the progression of coronary heart disease (CHD).
- To analyze clinical and functional parameters in patients with stable angina pectoris in relation to seasonal and IAC influences.
Summary:
- This study examined 52 patients with functional class II stable angina pectoris.
- Findings indicate that autumn and winter are associated with increased angina progression.
- 24-hour monitoring revealed increased silent ischemia and decreased heart rate variability in winter, and increased painful ischemia in autumn.
- Specific IAC trimesters, particularly the fourth (months 10-12), showed a poorer CHD course with prolonged total and silent ischemia and increased latent coronary insufficiency.
Impact:
- Results highlight the significance of biorhythmological factors, including season and IAC periods, in determining the course of CHD.
- This suggests potential for chronotherapeutic interventions in managing coronary heart disease.
- Identifies specific high-risk periods for patients with stable angina pectoris, aiding in proactive healthcare strategies.
Abstract:
The study was undertaken to study a role of periods of an individual annual cycle (IAC) (from the date of a birthday to the following one) and the season of a year in patients with coronary heart disease (CHD) in its progression. The study enrolled 52 patients with functional classes II and stable angina pectoris. Clinical and functional parameters were estimated by the data of bicycle ergometric test (BET), 24-hour monitoring (24-h M), ECG, and echocardiography. The vast majority of cases of progression of angina were observed in autumn and winter. Moreover, in patients with angina, the duration of silent ischemia significantly increased and heart rate variability decreased in winter and that of painful ischemia increased in autumn, as evidenced by 24-h M. Trimesters 1 (months 1 to 3 from the date of birth) and particularly IV (months 10 to 12 from the date of birth) have been found to be characterized by a poor course of CHD. Thus, in trimester IV, the duration of total, and silent ischemia significantly prolonged, as shown by 24-h M; episodes of latent coronary insufficiency increased in number, as evidenced by BET. Thus, the course of CHD is determined by a number of biorhythmological factors: the season of a year and the period of IAC.
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