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Essential oil-herbal sachet intervention improves sleep quality and reduces anxiety in maintenance hemodialysis patients

In a single-center randomized trial, 88 maintenance hemodialysis patients with poor sleep (PSQI >7) were randomized to usual care or usual care plus an essential oil-herbal sachet intervention. At 3 months, the intervention group had significantly lower PSQI scores (7.8 ± 2.6 vs 13.8 ± 2.5; adjusted β = -5.37, 95% CI -6.29 to -4.45, p < 0.001) and lower HADS-A anxiety scores (9.2 ± 2.1 vs 11.8 ± 2.4; adjusted β = -2.61, 95% CI -3.26 to -1.96, p < 0.001). Sleep response occurred in 77.3% of intervention vs 31.8% of control, and anxiety response in 68.2% vs 29.5%.

Last updated: Aug 27, 2026•1 RCTs•📖 Read as article →

Evidence Score

Evidence Score44/100
Human RCT★★☆☆☆
Meta-analysis☆☆☆☆☆
Mechanism★★★★★
Safety★★★★☆
Confidencelow

Study Evidence

Study 1. Essential Oil-herbal Sachet Intervention for Sleep Quality and Anxiety in Maintenance Hemodialysis: A Single-center Randomized Trial.

observational

Lin Y, Zhu Y · Journal of visualized experiments : JoVE (2026)

Participants: N/A
Duration: 3 months
Intervention: Combined olfactory intervention: essential oil preparation (lavender, bergamot, coconut oil in 5:3:10 ratio) used during dialysis and before sleep, plus traditional Chinese herbal sachet placed near pillow and replaced monthly
Outcome: Sleep quality (PSQI global score) and anxiety (HADS-A score) at month 3
Effect Size: Adjusted β for PSQI = -5.37; adjusted β for HADS-A = -2.61
Population: Maintenance hemodialysis patients with baseline PSQI >7 (n=88)

Result:

PubMed: 42644519DOI: 10.3791/71294

Mechanism Graph

Olfactory stimulation from essential oils (lavender, bergamot) activates limbic system and promotes relaxation
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Herbal sachet provides continuous aromatic exposure near pillow during sleep
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Combined aromatherapy may reduce sympathetic arousal and anxiety
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Improved relaxation and reduced anxiety lead to better sleep quality

Limitations

  • ⚠Single-center, open-label design with no blinding due to odor-based intervention
  • ⚠Not prospectively registered (trial registration absent)
  • ⚠Short follow-up (3 months) and small sample size (n=88)
  • ⚠Potential placebo effect due to lack of sham control

Frequently Asked Questions

What is the essential oil-herbal sachet intervention?▼

It combines an essential oil preparation (lavender, bergamot, coconut oil in 5:3:10 ratio) used during dialysis and before sleep, with a traditional Chinese herbal sachet placed near the pillow and replaced monthly.

How effective is this intervention for sleep quality in hemodialysis patients?▼

At 3 months, the intervention group had significantly lower PSQI scores (7.8 vs 13.8, adjusted β = -5.37, p < 0.001), with a sleep response rate of 77.3% vs 31.8% in controls.

Does this intervention also reduce anxiety?▼

Yes, HADS-A scores were significantly lower in the intervention group (9.2 vs 11.8, adjusted β = -2.61, p < 0.001), with an anxiety response rate of 68.2% vs 29.5%.

Are there any side effects?▼

Any adverse events were reported in 15.9% of intervention vs 6.8% of control, but no serious intervention-related adverse events occurred.

Products

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References

  1. 1.Lin Y, Zhu Y. "Essential Oil-herbal Sachet Intervention for Sleep Quality and Anxiety in Maintenance Hemodialysis: A Single-center Randomized Trial.." Journal of visualized experiments : JoVE, 2026. PMID: 42644519 DOI: 10.3791/71294
Disclaimer: This content is for educational purposes only and is not medical advice. Evidence scores reflect the quality and quantity of available research, not clinical recommendations. Always consult a healthcare professional before starting any supplement or intervention.