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Vitamin D in critically ill patients.

Katarzyna Matysiak-Luśnia1

  • 12nd Department of Anaesthesiology and Intensive Therapy, University Hospital in Wrocław, Poland Clinic for Home Parenteral and Enteral Nutrition, Regional Specialist Hospital, Jelenia Góra, Poland. mi_anest@op.pl.

Anaesthesiology Intensive Therapy
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Vitamin D deficiency is common and linked to worse health outcomes, especially in critically ill patients. Understanding vitamin D

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Area of Science:

  • Endocrinology
  • Nutritional Science
  • Critical Care Medicine

Background:

  • Vitamin D deficiency is a widespread global health issue affecting both the general population and hospitalized patients, particularly those in intensive care.
  • Low vitamin D levels are associated with increased risks of illness and death in the general population and critically ill individuals.
  • Beyond its role in bone metabolism, vitamin D functions as a steroid hormone with diverse effects on immunity, inflammation, and cellular processes.

Purpose of the Study:

  • To review and synthesize current scientific understanding regarding the connection between vitamin D levels and critical illness.
  • To highlight the multifaceted roles of vitamin D beyond bone health, including its impact on systemic functions.

Main Methods:

  • Literature review of existing studies on vitamin D status and critical illness.
  • Synthesis of evidence on the pleiotropic effects of vitamin D.
  • Analysis of the relationship between vitamin D insufficiency and various systemic disorders.

Main Results:

  • Vitamin D deficiency is prevalent in critically ill patients and correlates with adverse outcomes.
  • Emerging evidence links vitamin D insufficiency to conditions such as type II diabetes, cancer, obesity, and cardiovascular diseases.
  • Vitamin D's regulatory roles in immunity, inflammation, cell proliferation, differentiation, apoptosis, and angiogenesis are increasingly recognized.

Conclusions:

  • Vitamin D status is a significant factor in critical illness.
  • Further research is warranted to elucidate the precise mechanisms and therapeutic implications of vitamin D in critical care.
  • Maintaining adequate vitamin D levels may be crucial for improving outcomes in critically ill patients.