Heart Rate Variability and Coronary Artery Bypass Grafting: A Systematic Review.
Patrycja S Matusik1, Omar Alomar2, Maryam Rafaqat Hussain3
1Chair of Radiology, Jagiellonian University Medical College and University Hospital, 30-688 Kraków, Poland.
Reviews in Cardiovascular Medicine
|July 30, 2024
Summary
Heart rate variability (HRV) changes after coronary artery bypass grafting (CABG) but typically recovers within six months. While traditional HRV measures don't predict post-CABG complications, altered non-linear HRV may indicate higher risk.
Area of Science:
- Cardiology
- Autonomic Nervous System Function
- Surgical Outcomes
Background:
- Coronary artery bypass grafting (CABG) is a key treatment for coronary artery disease.
- Post-CABG patients face risks of cardiovascular events, including arrhythmias.
- Abnormal heart rate variability (HRV) is linked to autonomic dysfunction and arrhythmias after CABG.
Purpose of the Study:
- To systematically review research on heart rate variability (HRV) following coronary artery bypass grafting (CABG).
- To explore the relationship between HRV, autonomic function, and post-CABG complications.
Main Methods:
- Systematic literature search of PubMed, Cochrane, and Embase databases.
- Analysis of relevant English-language articles.
- Focus on time and frequency domain HRV, and non-linear measures.
Main Results:
- HRV acutely decreases post-CABG but recovers by 6 months.
- Pre-existing conditions (heart failure, diabetes, depression) negatively impact post-CABG HRV.
- Cardiac rehabilitation may improve HRV recovery and exercise capacity.
Conclusions:
- Traditional HRV parameters do not reliably predict post-CABG complications.
- Non-linear HRV measures show potential for identifying high-risk patients, including those prone to atrial fibrillation.
- Current data do not confirm early HRV assessment predicts long-term mortality post-CABG.
Keywords:
atrial fibrillationcoronary artery bypass grafting surgeryheart rate variabilitymortalityrehabilitationMore Related Videos
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