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Vitamin C Level Effect in Orthognathic Surgery

Does Vitamin C Level Effect Postoperative Analgesia in Orthognathic Surgery: a Preliminary Study?

Status
Completed
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT04416386
Enrollment
30
Registered
2020-06-04
Start date
2020-06-13
Completion date
2022-03-30
Last updated
2022-07-26

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Maxillofacial Abnormalities, Maxillofacial Injuries, Maxillofacial Trauma

Brief summary

Comparing the pre and post-operative blood plasma levels of vitamin C according to oxidative stress and investigate the correlation between post-operative analgesia requirement and vitamin C levels following orthognathic surgery.

Detailed description

Vitamin C (ascorbic acid) is a water-soluble vitamin that has many functions include antioxidant, neuroprotective, neuromodulator and co-factor for various enzymes or chemical reactions. Primarily ascorbic acid is the most potent non-enzymatic antioxidant agent in an extracellular fluid which is crucial for defense against oxidative stress. Recent clinical studies have shown that trauma or surgery may lead to oxidative stress and plasma vitamin C level decreases due to body demand that most likely caused by oxidative stress. Pain is defined as an unpleasant sensory and emotional experience associated with actual or potential tissue damage. One of the major purposes in the management of post-operative pain is to minimize the dose of medications to reduce side effects while providing adequate analgesia. In orthopedic surgery and management of postherpetic neuralgia oral vitamin C supplementation significantly reduced pain. However, the decrease in vitamin C concentration,the effects on antinociception and postoperative pain are not fully understood. In this study, investigators aimed to compare pre and post-operative blood plasma levels of vitamin C after orthognathic surgery and investigate a correlation between post-operative analgesia requirement and vitamin C levels without vitamin C administration.

Interventions

OTHERVitamin C

Pre and post-operative blood plasma levels of vitamin C will be investigated

Sponsors

Medipol University
Lead SponsorOTHER

Study design

Observational model
CASE_CONTROL
Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
ALL
Age
19 Years to 38 Years

Inclusion criteria

* American Society of Anesthesiologists (ASA) classification I-II * Scheduled for orthognatic surgery under general anesthesia

Exclusion criteria

* history of bleeding diathesis, * receiving anticoagulant treatment, * known local anesthetics and opioid allergy, * infection of the skin at the site of the needle puncture, * pregnancy or lactation, * patients who do not accept the procedure

Design outcomes

Primary

MeasureTime frameDescription
Blood plasma levels of vitamin CChange from baseline blood plasma levels of vitamin C at postoperative 1, 2, 4, 8, 16 hoursPre and post-operative blood plasma levels of vitamin C

Secondary

MeasureTime frameDescription
Opioid consumptionChange from baseline opioid consumption levels at postoperative 1, 2, 4, 8, 16 hoursPostoperative opioid consumption

Countries

Turkey (Türkiye)

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026