Volume 106, Issue 1 pp. 408-417
REVIEW

Fasting Versus Non-Fasting Before Cardiac Catheterization: A Systematic Review and Meta-Analysis of Randomized Controlled Trials

Juliana Muniz

Corresponding Author

Juliana Muniz

Internal Medicine Department, Schmieder Klinik Heidelberg, Heidelberg, Germany

Correspondence: Juliana Muniz ([email protected])

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Antonio O. Gonçalves Neto

Antonio O. Gonçalves Neto

Federal University of Paraná, Curitiba, Brazil

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Beatriz A. A. H. Morais

Beatriz A. A. H. Morais

Centro Universitário CESMAC, Maceió, Brazil

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Camil Suciu-Bogdan

Camil Suciu-Bogdan

Internal Medicine Department, Schmieder Klinik Heidelberg, Heidelberg, Germany

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David Ferreira

David Ferreira

Cardiovascular Department, John Hunter Hospital, Newcastle, Australia

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Joao Braghiroli

Joao Braghiroli

Department of Cardiology, Jackson Memorial Hospital, Florida, USA

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Sergio F. Camara

Sergio F. Camara

Heart Institute of Sao Paulo (InCor), University of Sao Paulo, Sao Paulo, Brazil

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Henrique B. Ribeiro

Henrique B. Ribeiro

Heart Institute of Sao Paulo (InCor), University of Sao Paulo, Sao Paulo, Brazil

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First published: 27 April 2025

ABSTRACT

Background

Current guidelines recommend routine fasting before cardiac catheterization under conscious sedation. However, data supporting this practice have been limited.

Aims

We aimed to compare the safety and patient well-being of a non-fasting strategy to standard fasting in patients who undergo heart catheterization procedures.

Methods

We conducted a meta-analysis of randomized studies comparing fasting versus non-fasting before cardiac catheterization. We systematically reviewed PubMed, Embase, and Cochrane databases until October 2024. We incorporated unpublished subgroup data from the previously published SCOFF Trial, exclusively on patients who underwent catheterization procedures.

Results

We included 7 RCTs comprising 3289 patients who underwent cardiac catheterization procedures. The pooled analysis demonstrated the non-inferiority of the non-fasting strategy, with no significant differences in the incidences of nausea/vomiting (RR 0.90; 95% CI 0.50−1.61; p = 0.72), hypoglycemia (RR 0.78; 95% CI 0.45−1.35, p = 0.38), acute kidney injury (RR 1.45; 95% CI 0.77−2.75, p = 0.251), and length of hospital stay (SMD 0.005, 95% CI −0.109 to 0.099, p = 0.92) compared to the fasting strategy. The non-fasting strategy was significantly associated with reduced rates of intraprocedural hypotension and showed a statistically significant improvement in overall patient satisfaction (SMD −0.749; 95% CI −1.26; −0.234, p = 0.004) when compared to the fasting strategy.

Conclusion

A non-fasting strategy before cardiac catheterization procedures is as safe as the standard fasting protocol and demonstrates a significant improvement of overall patient satisfaction. These findings support the consideration of non-fasting protocols as a patient-centered approach that maintains safety while enhancing the patient experience.

Conflicts of Interest

The authors declare no conflicts of interest.

Data Availability Statement

They also take responsibility for the reliability and freedom from bias of the data presented and their discussed interpretation.

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