# Analgesic Effects of Low-dose S-ketamine in Major Spine Fusion Surgery

> **NCT04964219** · PHASE4 · COMPLETED · sponsor: **Peking University First Hospital** · enrollment: 164 (actual)

## Conditions studied

- S-ketamine
- Postoperative Analgesia
- Spine Fusion

## Interventions

- **DRUG:** S-ketamine
- **DRUG:** Placebo

## Key facts

- **NCT ID:** NCT04964219
- **Lead sponsor:** Peking University First Hospital
- **Sponsor class:** OTHER
- **Phase:** PHASE4
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2022-02-08
- **Primary completion:** 2025-04-01
- **Final completion:** 2025-05-02
- **Target enrollment:** 164 (ACTUAL)
- **Last updated:** 2025-07-30


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04964219

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04964219, "Analgesic Effects of Low-dose S-ketamine in Major Spine Fusion Surgery". Retrieved via AI Analytics 2026-07-26 from https://api.ai-analytics.org/clinical/NCT04964219. Licensed CC0.

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*[Clinical trials dataset](/datasets/clinical-trials) · CC0 1.0*