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August 19, 2022Open Access

High-dose perioperative vitamin D supplementation significantly reduced the rate of early postoperative vitamin D insufficiency to 14% compared to 56% in untreated controls.

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Why the study?

Post-operative vitamin D supplementation improves CRC survival outcomes in randomised trials, but the feasibility, safety, and efficacy of pre- and perioperative vitamin D in patients undergoing CRC surgery remained to be tested.

Does perioperative 3200IU oral cholecalciferol improve 25OHD levels and reduce CRP in patients undergoing colorectal cancer resection?

Population

122 patients undergoing CRC surgery

Comparison

3200IU oral cholecalciferol per day perioperatively vs untreated CRC controls

Design

Feasibility study

Key result

High-dose perioperative vitamin D supplementation significantly reduced the rate of early postoperative vitamin D insufficiency to 14% compared to 56% in untreated controls.

Authors

PVP G Vaughan-ShawLBLouis F. BuijsJBJames P. Blackmur

Discussion

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Overview

May support perioperative vitamin D repletion in colorectal resection; leaves open randomized confirmation of CRP and outcome effects.

Study Design

Type

Cohort (n=122)

Multicenter

No

Structured PICO

Does perioperative 3200IU oral cholecalciferol improve 25OHD levels and reduce CRP in patients undergoing colorectal cancer resection?

P
Population
122 patients undergoing colorectal cancer resection, not previously on vitamin D supplements, evaluated for perioperative vitamin D levels.
I
Intervention
3200IU oral cholecalciferol per day perioperatively
C
Comparator
Contemporaneous untreated CRC controls
O
Outcome
Serial serum 25OHD levelssurrogate

Main Result

Absolute Event Rate: 14% vs 56%

p-value: p=0.003

High-dose perioperative vitamin D supplementation is feasible, increases 25OHD levels, and reduces early postoperative CRP in patients undergoing colorectal cancer resection.

Limitations

  • Not a randomised study, allowing potential confounding factors to influence results.
  • Supplemented patients recruited in 2020 were compared against a combined control group that included patients recruited in 2013.
  • The COVID-19 pandemic markedly impacted total study recruitment and sampling, limiting statistical power.
  • The study does not provide direct evidence of a survival benefit from early supplementation.
  • Compared against a combined control group including historical patients
  • Non-randomized design cannot fully exclude confounding factors
  • Power limited by COVID-19 which impacted recruitment and sampling
  • No direct evidence of survival benefit provided

Cite This Study

Vaughan-Shaw et al. (2022) conducted a cohort in Colorectal cancer (n=122). Vitamin D3 (Cholecalciferol) vs. Untreated controls was evaluated on Early postoperative vitamin D insufficiency (25OHD < 50nmol/l) (p=0.003). High-dose perioperative vitamin D supplementation significantly reduced the rate of early postoperative vitamin D insufficiency to 14% compared to 56% in untreated controls.

synapsesocial.com/papers/6a818116176d2ce0316629a8https://doi.org/10.1101/2022.08.18.22278022
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