Student or educator? Sign up with your school email and get 6 months of Pro free.
Cited by 317

The DOI matches its Crossref record; 36 of the 36 references it cites were found in a registry or an index.

Ascorbic Acid Prevents Contrast-Mediated Nephropathy in Patients With Renal Dysfunction Undergoing Coronary Angiography or Intervention

Open access
Spargias, Konstantinos, Alexopoulos, Elias, Kyrzopoulos, Stamatis, Iacovis, Panayiotis, Greenwood, Darren C., Manginas, Athanassios, Voudris, Vassilis, Pavlides, Gregory, Buller, Christopher E., Kremastinos, Dimitrios, Cokkinos, Dennis V.·2004·Circulation

Abstract

Background— Contrast agents can cause a reduction in renal function that may be due to the generation of reactive oxygen species. Conflicting evidence suggests that administration of the antioxidant acetylcysteine prevents this renal impairment. The action of other antioxidant agents has not been investigated. Methods and Results— We conducted a randomized, double-blind, placebo-controlled trial of ascorbic acid in 231 patients with a serum creatinine concentration ≥1.2 mg/dL who underwent coronary angiography and/or intervention. Ascorbic acid, 3 g at least 2 hours before the procedure and 2 g in the night and the morning after the procedure, or placebo was administered orally. Contrast-mediated nephropathy was defined by an absolute increase of serum creatinine ≥0.5 mg/dL or a relative increase of ≥25% measured 2 to 5 days after the procedure. Contrast-mediated nephropathy occurred in 11 of the 118 patients (9%) in the ascorbic acid group and in 23 of the 113 patients (20%) in the placebo group (odds ratio [OR], 0.38; 95% confidence interval [CI], 0.17 to 0.85; P =0.02). The mean serum creatinine concentration increased significantly in the placebo group (from 1.36±0.50 to 1.50±0.54 mg/dL, P <0.001) and nonsignificantly in the ascorbic acid group (from 1.46±0.52 to 1.52±0.64 mg/dL, P =0.07). The mean increase in serum creatinine concentration was greater in the placebo group than in the ascorbic acid group (difference of 0.09 mg/dL; 95% CI, 0.00 to 0.17; P =0.049). Conclusions— Prophylactic oral administration of ascorbic acid may protect against contrast-mediated nephropathy in high-risk patients undergoing a coronary procedure.

Overview

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1161/01.cir.0000146396.19081.73

Cites

36 of 36 references verified0 citation errors · 0 not checkable

Statistics

Verification

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Citations

Cites

Show all 36 references

Cited by

See all 317

Metadata

Authors
Spargias, K., Alexopoulos, E., Kyrzopoulos, S., Iacovis, P., Greenwood, D. C., Manginas, A., Voudris, V., Pavlides, G., Buller, C. E., Kremastinos, D., & Cokkinos, D. V.
Venue
Circulation
Published
2004-11-02
Volume
110
Issue
18
Pages
2837-2842
ISSN
  • 0009-7322 (ISSN-L)
  • 1524-4539
OpenAlex
W2143687264
Cited by
317
References
36
FWCI
11.64
Type
journal article
Language
en
Open access
bronze

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review

How to cite

Cite CoChat for the checks on this page, and the paper for its own findings.

This page
CoChat. (2026). Citation check: Ascorbic Acid Prevents Contrast-Mediated Nephropathy in Patients With Renal Dysfunction Undergoing Coronary Angiography or Intervention. https://app.cochat.ai/papers/10.1161/01.cir.0000146396.19081.73
The paper
Spargias, K., Alexopoulos, E., Kyrzopoulos, S., Iacovis, P., Greenwood, D. C., Manginas, A., Voudris, V., Pavlides, G., Buller, C. E., Kremastinos, D., & Cokkinos, D. V. (2004). Ascorbic Acid Prevents Contrast-Mediated Nephropathy in Patients With Renal Dysfunction Undergoing Coronary Angiography or Intervention. Circulation. https://doi.org/10.1161/01.cir.0000146396.19081.73

Data sources

Bibliographic data: Semantic Scholar, OpenAlex, Crossref.

Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.