Dexmedetomidine-flurbiprofen axetil-based opioid-free analgesia improves postoperative sleep quality and attenuates melatonin suppression after thyroidectomy

Q: What is the primary benefit of opioid-free analgesia for sleep after thyroidectomy?

The opioid-free regimen based on dexmedetomidine and flurbiprofen axetil significantly improves sleep quality and preserves nocturnal melatonin secretion compared to opioid-based analgesia.

Q: Does the opioid-free regimen provide adequate pain control?

Yes, postoperative pain intensity and sedation levels were comparable between the opioid-free and opioid groups at all measured time points.

Q: What adverse events are reduced with opioid-free analgesia?

The incidences of nausea, vomiting, and pruritus were significantly reduced in the opioid-free group.

Q: How was sleep quality measured in this study?

Sleep quality was assessed using the Richards-Campbell Sleep Questionnaire (RCSQ) and detailed sleep parameters including sleep latency, nocturnal awakenings, and total sleep time.

In a randomized controlled trial of 96 patients undergoing thyroidectomy, an opioid-free PCIA regimen (dexmedetomidine, flurbiprofen axetil, ondansetron) significantly improved sleep quality (RCSQ scores, P<0.001) and preserved nocturnal melatonin secretion (urinary 6-SMT, P<0.001) compared to opioid-based PCIA (sufentanil, ondansetron). The opioid-free group also showed shorter sleep latency, fewer nocturnal awakenings, longer total sleep time, lower anxiety, and reduced opioid-related adverse events.

Last updated: Jul 28, 2026•1 RCTs•📖 Read as article →

Evidence Score

Evidence Score42/100

Human RCT★★☆☆☆

Meta-analysis☆☆☆☆☆

Mechanism★★★★★

Safety★★★★☆

Confidencelow

Study Evidence

Study 1. Dexmedetomidine-flurbiprofen axetil-based opioid-free analgesia attenuates postoperative melatonin suppression and improves sleep quality after thyroidectomy: a randomized controlled trial.

observational

Guo R, Luo X, Chen L, Rao PG, Wang LF, Lei XH, Dai GY, Fang H · Frontiers in pharmacology (2026)

Participants: N/A

Duration: 48 hours postoperative

Intervention: Opioid-free PCIA with dexmedetomidine, flurbiprofen axetil, and ondansetron initiated 5 minutes before end of surgery

Outcome: Postoperative sleep quality (RCSQ), urinary 6-sulfatoxymelatonin excretion normalized to creatinine, sleep latency, nocturnal awakenings, total sleep time, anxiety levels

Effect Size: N/A

Population: 96 patients undergoing thyroidectomy

Result:

PubMed: 42465992 DOI: 10.3389/fphar.2026.1839440

Mechanism Graph

Dexmedetomidine provides sedation and analgesia without opioid receptor activation

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Flurbiprofen axetil reduces inflammation and pain via COX inhibition

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Avoidance of opioids prevents suppression of nocturnal melatonin secretion

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Improved melatonin secretion leads to better sleep quality and reduced anxiety

Limitations

⚠Single-center study with relatively small sample size (n=96)
⚠Short follow-up limited to postoperative days 1 and 2, not assessing long-term sleep outcomes

Frequently Asked Questions

What is the primary benefit of opioid-free analgesia for sleep after thyroidectomy?▼

The opioid-free regimen based on dexmedetomidine and flurbiprofen axetil significantly improves sleep quality and preserves nocturnal melatonin secretion compared to opioid-based analgesia.

Does the opioid-free regimen provide adequate pain control?▼

Yes, postoperative pain intensity and sedation levels were comparable between the opioid-free and opioid groups at all measured time points.

What adverse events are reduced with opioid-free analgesia?▼

The incidences of nausea, vomiting, and pruritus were significantly reduced in the opioid-free group.

How was sleep quality measured in this study?▼

Sleep quality was assessed using the Richards-Campbell Sleep Questionnaire (RCSQ) and detailed sleep parameters including sleep latency, nocturnal awakenings, and total sleep time.

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References

1.Guo R, Luo X, Chen L, Rao PG, Wang LF, Lei XH, Dai GY, Fang H. "Dexmedetomidine-flurbiprofen axetil-based opioid-free analgesia attenuates postoperative melatonin suppression and improves sleep quality after thyroidectomy: a randomized controlled trial.." Frontiers in pharmacology, 2026. PMID: 42465992 DOI: 10.3389/fphar.2026.1839440

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