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The prognostic impact of the controlling nutritional status (CONUT) score in patients undergoing cardiovascular surgery

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Abstract

Background

Various postoperative predictive markers following cardiovascular surgery have been examined for use in the current aging population. The controlling nutritional status (CONUT) score, which is advocated not only as a screening tool for poor nutritional status, but also as an immunonutritional assessment, has started to attract attention in several clinical settings, such as in cancer and heart failure patients. The aim of this study was to evaluate the value of the CONUT score as a postoperative prognostic marker in patients who underwent cardiovascular surgery.

Methods

A total of 75 patients who underwent elective cardiovascular surgery between January 2015 and October 2017 were retrospectively analyzed. The patients were divided into two groups according to their preoperative CONUT score (i.e., CONUT < 2 or CONUT ≥ 2), and their clinicopathological characteristics, surgical outcomes, and overall survival were compared. The median follow-up period was 23 months (range 0–43 months) after surgery.

Results

The high CONUT group (CONUT ≥ 2), which consisted of 30 (40.0%) patients, had a significantly worse prognosis than the low CONUT group with regard to overall survival (p = 0.0007). On multivariate analyses, the CONUT score was identified as the only independent prognostic factor for overall survival (hazard ratio 1.47 per 1 CONUT score increase, 95% confidence interval 1.05–2.06, p < 0.026).

Conclusions

The CONUT score is a reliable and independent preoperative predictor of overall survival after cardiovascular surgery.

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Funding

This research received no specific grant from any funding agency in the public, commercial, or not-for-profit sectors.

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Author notes

  1. Takeshiro Fujii equally contributed.

Authors and Affiliations

  1. Division of Cardiovascular Surgery, Department of Surgery, School of Medicine, Faculty of Medicine, Toho University, 6-11-1, Omorinishi, Ota, Tokyo, 143-8541, Japan

    Masanori Hara, Takeshiro Fujii, Hiroshi Masuhara & Yoshinori Watanabe

  2. Department of Cardiovascular Surgery, Misato Central General Hospital, 4-5-1, Chuo, Misato, Saitama, 341-8526, Japan

    Muneyasu Kawasaki & Keiichi Tokuhiro

Authors
  1. Masanori Hara
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  2. Takeshiro Fujii
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  3. Hiroshi Masuhara
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  4. Muneyasu Kawasaki
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  5. Keiichi Tokuhiro
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  6. Yoshinori Watanabe
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Correspondence to Masanori Hara.

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Ethical approval

Use of the clinical data in this study was approved by the human ethics review committee of Misato Central General Hospital.

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Informed consent was obtained from all individual participants included in the study.

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Hara, M., Fujii, T., Masuhara, H. et al. The prognostic impact of the controlling nutritional status (CONUT) score in patients undergoing cardiovascular surgery. Gen Thorac Cardiovasc Surg 68, 1142–1147 (2020). https://doi.org/10.1007/s11748-020-01346-x

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  • DOI: https://doi.org/10.1007/s11748-020-01346-x

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