Acute and Critical Care

Original Article

Basic science and research
Comparison of salivary and serum cortisol levels in mechanically ventilated patients and non-critically ill patients: Jung Hee Kim, Yoon Ji Kim, Sang-Min Lee, Jinwoo Lee; Acute Crit Care. 2020;35(3):149-155. Published online August 31, 2020; DOI: https://doi.org/10.4266/acc.2020.00297

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Background
Although the measuring free cortisol is ideal for assessment of hypothalamicpituitary-adrenal function, it is not routinely measured. Salivary cortisol correlates well with the biologically active free cortisol. Therefore, this study measured the morning basal as well as adrenocorticotropic hormone-stimulated salivary cortisol levels in mechanically ventilated patients and compared the results with non-critically ill patients.
Methods
We prospectively enrolled 49 mechanically ventilated patients and 120 patients from the outpatient clinic. Serum and saliva samples were collected between 8 AM and 10 AM. Salivary cortisol levels were measured using an enzyme immunoassay kit. The salivary samples were insufficient in 15 mechanically ventilated patients (30.6%), and these patients were excluded from the final analysis.
Results
Mechanically ventilated patients (n=34) were significantly older and had lower body mass index and serum albumin levels and higher serum creatinine levels than non-critically ill patients (n=120). After adjustment for these parameters, both basal and stimulated salivary and serum cortisol levels were higher in mechanically ventilated patients. The increase in cortisol was not significantly different between the two groups. Serum cortisol levels showed a positive correlation with salivary cortisol levels. Among mechanically ventilated patients, both basal serum and salivary cortisol levels were lower in survivors than in non-survivors.
Conclusions
Both basal total serum and salivary cortisol levels were elevated in mechanically ventilated patients and in non-survivors.

Citations

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Xin Liu, Weimin Dang, Hui Liu, Yao Song, Ying Li, Weixian Xu
Journal of Occupational Health.2022;[Epub] CrossRef

Review

Hormonal Changes in Critical Condition: Heung Bum Lee, Chi Ryang Chung; Korean J Crit Care Med. 2010;25(3):123-129.; DOI: https://doi.org/10.4266/kjccm.2010.25.3.123

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Abstract PDF

When disease or trauma progresses to a critical state, the reaction of the endocrine system in creating homeostasis is essential for survival. The association between the severity of hormonal changes and outcome in terms of morbidity and mortality has led to the challenge of development of several endocrine treatments. During sepsis, nitric oxide-mediated apoptosis is observed in the neurons and glial cells of the cerebrovascular centers of the autonomic nervous system. It is probably one of the components of the circulatory dysfunction of sepsis. The regulation of different organs was neither linear nor independent however organs were found to behave as biological oscillators coupled to each other through neurological or hormonal communication pathways. Sepsis, because of systemic inflammatory responsive syndrome, disrupts these communication pathways and leads to organ failures. Endocrine hormonal issues related to the intensive care setting are common challenges to ICU specialists. Disruptions of the endocrine system in sepsis are characterized by 1) an increase in cortisol plasma levels with a loss of the circadian rhythm of its secretion; 2) hyperglycemia due to insulin resistance and rise in hyperglycemic hormones secretion; 3) relative vasopressin deficiency; and 4) euthyroid sick syndrome or non-thyroidal illness syndrome. This article discusses the dynamic changes of four main endocrine axes: hypothalamic-pituitary-adrenal axis, insulin, vasopressin and thyroid during grave states of disease, when a patient is in critical condition.

Citations

Citations to this article as recorded by

The Changing Pattern of Blood Glucose Levels and Its Association with In-hospital Mortality in the Out-of-hospital Cardiac Arrest Survivors Treated with Therapeutic Hypothermia
Ki Tae Kim, Byung Kook Lee, Hyoung Youn Lee, Geo Sung Lee, Yong Hun Jung, Kyung Woon Jeung, Hyun Ho Ryu, Byoeng Jo Chun, Jeong Mi Moon
Korean Journal of Critical Care Medicine.2012; 27(4): 255. CrossRef

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