CClinicalTrials.gg
Status unknownNCT04210453Updated Mar 26, 2020

The Impact of Vitamin C on Postoperative Acute Kidney Injury in Risk Patients Undergoing Valvular Heart Surgery

A Phase 4 interventional study of Vitamin C and Control (Normal saline) in Acute Kidney Injury, sponsored by Yonsei University. Status unknown at 1 site in Korea, Republic of. Open to participants aged 20 Years and older. Per ClinicalTrials.gov, last updated 2020-03-26.

Sponsored by Yonsei University · Phase 4, Interventional, and Prevention

The sponsor has not verified this record recently (last verified Mar 2020), so the status shown — last known as Recruiting — may be out of date.
Phase
Phase 4
Study type
Interventional
Enrollment
264
Allocation
Randomized
Ages
20 Years and older
Sex
All
01

Study summary

In cases of cardiac surgery or sepsis which cause inflammation, oxidative stress, endothelial injury and vasoplegia, serum vitamin C concentration is sharply decreased. The anti-inflammatory and anti-oxidant effects of vitamin C and the effects of reducing vasoconstrictor use have been demonstrated in patients with sepsis and septic shock, however, the foregoing effects have not been validated in patients undergoing cardiac surgery.

In this study, investigators investigate the effect of intravenous vitamin C on the incidence of acute renal injury after valvular heart surgery.

02

Conditions studied

  • Acute Kidney Injury

Keywords

  • Postoperative acute kidney injury
03

In context

Acute Kidney Injury

1,595 studies on the registry are indexed under Acute Kidney Injury; 371 are open to participants now.

This study's planned enrollment of 264 is above the median of 100 across 763 interventional studies indexed under Acute Kidney Injury.

Browse Acute Kidney Injury studies →

Lead sponsor

Yonsei University is the lead sponsor of 1,387 studies on the registry; 232 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
20 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Patients older than 20 years and undergoing elective valvular heart surgery whose preoperative acute renal failure score is ≥3 (moderate to severe risk).

Exclusion criteria

Exclusion Criteria:

  • Emergency operation
  • Cardiogenic shock or ventricular-assist device (eg. ECMO, IABP)
  • Severe chronic kidney disease (GFR(CKD-EPI) \<30ml/min/1.73m2)
  • Patients with past history of gout or renal stone or hyperoxaluria or cystinuria
  • Hemolytic anemia due to pyruvate kinase deficiency or glucose-6-phosphate dehydrogenase deficiency
  • Sicklemia or thalassemia
  • Hemochromatosis
  • Allergy to disodium ethylenediamine-tetraacetate or ascorbic acid
  • Patients taking aspirin up to 3 days before surgery
  • Patients taking antiepileptic drug or fluphenazine or steroid
  • Patients taking vitamin C within a month of surgery
  • Pregnant or lactating women
  • Patients who cannot understand the informed consent (eg. Foreigner)
05

Study design

Phase
Phase 4
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
264 participants (estimated)

Study arms

  • Placebo comparator
    Control group

    Participants in this group are administered IV normal saline.

    Drug: Control (Normal saline)

  • Experimental
    Vitamin C group

    Participants in this group are administered IV vitamin C diluted in normal saline.

    Drug: Vitamin C

Interventions

  • DrugVitamin C

    Participants in "Vitamin C group" are administered IV vitamin C diluted in 100 cc normal saline 1 day before surgery, at rewarming during surgery, 3 hours after surgery, and every 6 hours thereafter until postoperative 24 hours.

  • DrugControl (Normal saline)

    Participants in "Control group" are administered IV 100cc normal saline at the same timepoint as above.

06

What researchers measure

Primary outcomes

  1. Postoperative acute kidney injury

    Compare the incidence of postoperative acute kidney injury between the Vitamin C group and the control group according to KDIGO guideline.

    Time frame: Postoperative 7 days

Secondary outcomes

  1. Postoperative oxidative stress and vascular injury(Comparing the serum concentration)

    Compare the serum concentration of Malondialdehyde, Thrombomodulin before anesthetic induction and after CPB cessation.

    Time frame: Before anesthetic induction (Baseline)

  2. Postoperative oxidative stress and vascular injury(Comparing the serum concentration)

    Compare the serum concentration of Malondialdehyde, Thrombomodulin before anesthetic induction and after CPB cessation.

    Time frame: 5 minute after CPB cessation

07

Study locations

1 of 1 sites recruiting
  • Department of Anesthesiology and Pain Medicine Anesthesia and Pain Research Institute, Yonsei Cardiovascular Hospital, Yonsei University College of Medicine
    Seoul, Korea, Republic of
    Recruiting
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Mar 26, 2020, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04210453
Lead sponsor
Yonsei University
Responsible party
Sponsor
First posted
Dec 24, 2019
Start date
Mar 24, 2020
Primary completion
Dec 2022 (estimated)
Completion
Dec 2022 (estimated)
Last update
Mar 26, 2020

Study contacts

Hye Bin Kim
Contact
KAKDDUGI@yuhs.ac
82-2-2224-1242

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is status unknown, as verified in Mar 2020. You cannot join it, but the record below documents what was studied.

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Start the discussion