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Critical Care
Published in: Critical Care 1/2018

Open Access 01-12-2018 | Review

Clinical chronobiology: a timely consideration in critical care medicine

Authors: Helen McKenna, Gijsbertus T. J. van der Horst, Irwin Reiss, Daniel Martin

Published in: Critical Care | Issue 1/2018

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Abstract

A fundamental aspect of human physiology is its cyclical nature over a 24-h period, a feature conserved across most life on Earth. Organisms compartmentalise processes with respect to time in order to promote survival, in a manner that mirrors the rotation of the planet and accompanying diurnal cycles of light and darkness. The influence of circadian rhythms can no longer be overlooked in clinical settings; this review provides intensivists with an up-to-date understanding of the burgeoning field of chronobiology, and suggests ways to incorporate these concepts into daily practice to improve patient outcomes. We outline the function of molecular clocks in remote tissues, which adjust cellular and global physiological function according to the time of day, and the potential clinical advantages to keeping in time with them. We highlight the consequences of “chronopathology”, when this harmony is lost, and the risk factors for this condition in critically ill patients. We introduce the concept of “chronofitness” as a new target in the treatment of critical illness: preserving the internal synchronisation of clocks in different tissues, as well as external synchronisation with the environment. We describe methods for monitoring circadian rhythms in a clinical setting, and how this technology may be used for identifying optimal time windows for interventions, or to alert the physician to a critical deterioration of circadian rhythmicity. We suggest a chronobiological approach to critical illness, involving multicomponent strategies to promote chronofitness (chronobundles), and further investment in the development of personalised, time-based treatment for critically ill patients.
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Metadata
Title
Clinical chronobiology: a timely consideration in critical care medicine
Authors
Helen McKenna
Gijsbertus T. J. van der Horst
Irwin Reiss
Daniel Martin
Publication date
01-12-2018
Publisher
BioMed Central
Published in
Critical Care / Issue 1/2018
Electronic ISSN: 1364-8535
DOI
https://doi.org/10.1186/s13054-018-2041-x

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