ArticleCureus2025
Impact of Yoga Nidra on Heart Rate Variability in Coronary Artery Disease Patients Undergoing Coronary Artery Bypass Grafting: A Comparative Study.
Article in Cureus, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers, 1 of them a synthesis that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
2 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Yoga and Tai chi: a cross-cultural comparative study of health benefits, cultural sustainability, and global public health implications.Frontiers in public health · 2026Pooled it
- Effect of transcutaneous electrical nerve stimulation on patients after coronary artery bypass grafting: a systematic review and meta-analysis.Frontiers in cardiovascular medicine · 2026Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Background This study aimed to assess the changes in heart rate variability (HRV) before and after coronary artery bypass grafting (CABG) in patients with coronary artery disease (CAD) and evaluate the effect of Yoga Nidra as a postoperative intervention on autonomic function during recovery. Methodology A prospective study was conducted among 32 patients diagnosed with CAD and scheduled for elective CABG. Preoperative and postoperative HRV measurements were recorded. After discharge, participants were randomly divided into the following two groups: the case group received the Yoga Nidra intervention (guided sessions, two sessions daily for three months), while the control group received standard care without Yoga Nidra. HRV was assessed again three months postoperatively. Parameters such as high-frequency (HF) power, low-frequency (LF) power, and LF/HF ratio were analyzed to evaluate autonomic nervous system (ANS) modulation. Results In the case group, a significant decrease in HF (normalized units) was observed two weeks after surgery (from 40.38 to 30.85), reflecting a transient reduction in parasympathetic activity due to surgical stress. However, by the end of the three-month Yoga Nidra intervention, HF values improved significantly to 40.98, indicating a parasympathetic rebound. A decrease in the values of LF and the LF/HF ratio was noted, suggesting a restoration of autonomic balance in the Yoga Nidra group compared to the controls. In other words, at the end of three months, the HF component showed a statistically significant improvement in the Yoga Nidra group compared to controls (p = 0.003). The 95% confidence interval for the group difference (4.80, 21.50) did not cross zero, and the effect size (r = 0.61) indicated a large effect. Conclusions This study demonstrates that while CABG initially disrupts autonomic function, as evidenced by reduced parasympathetic markers, regular Yoga Nidra practice contributes to modulating the balance of the ANS during recovery periods, facilitating a favorable shift toward parasympathetic dominance. This shift, as assessed by HRV parameters, suggests improved autonomic recovery and enhanced myocardial electrical stability during the postoperative period.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.