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Serum vitamin D status following pediatric cardiac surgery and association with clinical outcome

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Abstract

Our aim is to determine the prevalence of vitamin D deficiency in children with congenital heart disease (CHD). In addition, we demonstrated the effect of cardiopulmonary bypass (CPB) on vitamin D, parathyroid hormone (PTH), and calcium levels. The association between perioperative vitamin D levels and postoperative clinical outcomes has been explored. A prospective observational study was conducted from February 2018 to June 2019 on 69 children undergoing elective surgery for CHD under CPB. Blood samples were collected preoperatively, immediate postoperatively, and 24 h postoperatively. Vitamin D deficiency was present in 34 (49.3%) patients preoperatively and 63 (91.3%) patients immediately postoperative. We identified 42.03% decline of 25(OH)D immediately postoperative. Changes in ionized calcium (iCa) concentrations were accompanied by reciprocal alterations in PTH concentrations. Lower postoperative 25(OH)D was associated with higher maximum vasoactive inotropic score (VIS) in the first 24 h postoperative (r = − 0.259, p = 0.03).

Conclusion: Vitamin D deficiency is common in children with CHD and the majority are vitamin D deficient following cardiac surgery with acute decline of serum 25(OH)D after CPB. Lower postoperative vitamin D levels in children undergoing cardiac surgery are associated with the need for increasing the inotropic support.

What is Known:

• Vitamin D is a pleiotropic hormone, important for calcium homeostasis.

• Vitamin D deficiency might affect the outcome in critically ill patients.

What is New:

• Cardiopulmonary bypass causes acute decline of vitamin D in children.

• Lower postoperative vitamin D is associated with higher inotropic support.

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Abbreviations

25(OH)D:

25-Hydroxy vitamin D

CHD:

Congenital heart disease

CPB:

Cardiopulmonary bypass

ECMO:

Extracorporeal membrane oxygenation

iCa:

Ionized calcium

ICU:

Intensive care unit

IQR:

Interquartile range

KAUH:

King Abdulaziz University Hospital

PCICU:

Pediatric cardiac intensive care unit

PTH:

Parathyroid hormone

RACHS:

Risk-adjusted classification for congenital heart surgery

VIS:

Vasoactive inotropic score

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Funding

This project was funded by the Deanship of Scientific Research (DSR), King Abdulaziz University, Jeddah, under grant no. (DF-815-140-1441). The authors, therefore, gratefully acknowledge DSR for the technical and financial support.

Author information

Authors and Affiliations

Authors

Contributions

AMD: study concept/design, data collection, data analysis/interpretation, writing the article and reviewing the manuscript. JA: data collection and drafting the initial manuscript. OOA: study concept/design and critical revision of article. AAE: data interpretation and critical revision of article. ZFZ: data collection and critical revision of article. THF: study design and reviewing the manuscript. AA: data collection and interpretation. GA: study design, statistical analysis and data interpretation. All authors read and approved the final manuscript.

Corresponding author

Correspondence to Ahmed M. Dohain.

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Conflict of interest

The authors declare that they have no conflict of interest.

Ethical approval

The study was approved by the King Abdulaziz University Institutional Review Board.

Informed consent

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

Additional information

Communicated by Peter de Winter

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Dohain, A.M., Almogati, J., Al-Radi, O.O. et al. Serum vitamin D status following pediatric cardiac surgery and association with clinical outcome. Eur J Pediatr 179, 635–643 (2020). https://doi.org/10.1007/s00431-019-03538-x

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  • DOI: https://doi.org/10.1007/s00431-019-03538-x

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