The Impact of Intravenous Vitamin C Combined With Nerve Blocks on Postoperative Pain and Recovery After Total Knee Arthroplasty

NCT ID: NCT05514197

Last Updated: 2025-11-19

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

73 participants

Study Classification

INTERVENTIONAL

Study Start Date

2022-11-02

Study Completion Date

2024-01-11

Brief Summary

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The aim of this prospective randomized-control study was to evaluate the impact of a single high-dose intravenous vitamin C added to ultrasound-guided blocks at induction on postoperative pain, sngception and early functional rehabilitation of the knee joint in patients under-going total knee arthroplasty.

Detailed Description

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Conditions

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Ascorbic Acid Postoperative Pain

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

TRIPLE

Participants Caregivers Outcome Assessors

Study Groups

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Vitamin C arm

Intravenous loading of 100mg/kg ascorbic acid before induction, Maximus 10g

Group Type EXPERIMENTAL

Ascorbic acid 100mg/kg, Maximus 10g

Intervention Type DRUG

Intravenous loading of 100mg/kg ascorbic acid with normal saline, totally 100ml Completed before induction

Control arm

Intravenous loading of the same volume Normal saline as experimental arm

Group Type PLACEBO_COMPARATOR

Control Rx

Intervention Type DRUG

Intravenous loading 100ml normal saline

Interventions

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Ascorbic acid 100mg/kg, Maximus 10g

Intravenous loading of 100mg/kg ascorbic acid with normal saline, totally 100ml Completed before induction

Intervention Type DRUG

Control Rx

Intravenous loading 100ml normal saline

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

1. Physical status according to American Society of Anesthesiologists (ASA) I-III
2. Patients scheduled for total knee arthroplasty
3. Patients aged ranging from 50 to 80 years old

Exclusion Criteria

1. Previous operation on the same knee
2. Allergy or intolerance to one of the study medications
3. Coagulopathy
4. Having lower limbs neuropathy
5. End-organ failure (CKD stage IV or V, NYHA III or IV)
6. BMI \> 35
7. Chronic opioid use (\>3 months) or drug abuser
8. Difficulty in communication (Impaired mental status)
9. Hyperuricemia or Glucose-6-phosphate dehydrogenase deficiency patient
Minimum Eligible Age

50 Years

Maximum Eligible Age

80 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Chimei Medical Center

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Jen-Yin Chen

Role: STUDY_DIRECTOR

Department of Anesthesiology, Chimei Medical Center

Locations

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Chi Mei Medical Center

Tainan, Tainan City, Taiwan

Site Status

Countries

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Taiwan

Other Identifiers

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CMMC11104/016

Identifier Type: -

Identifier Source: org_study_id

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