Abstract
The temperature distribution at the skin surface could be a useful tool to monitor changes in cardiac output. Goal: The aim of this study was to explore infrared thermography as a method to analyze temperature profiles of critically ill children. Methods: Patients admitted to the pediatric intensive care unit (PICU) were included in this study. An infrared sensor was used to take images in clinical conditions. The infrared core and limb temperatures (Ξc & Ξl) were extracted, as well as temperatures along a line drawn between these two regions. Results: The median [interquartile range] Ξc extracted from the images was 33.88°C [32.74-34.19] and the median Ξl was 30.21°C [28.89-33.13]. There was a good correlation between the Ξc and the clinical axillary temperature (rho = 0.39, p-value = 0.016). There was also a good correlation between the Ξc and Ξl (rho = 0.66, p-value = 1.2 eâ05). Conclusion: Thermography was found to be effective to estimate the body temperature. Correlation with specific clinical conditions needs further study.
Highlights
HUMANS have the ability to regulate their own body temperature, and keep it at a stable level between 36.5°C and 37.5 °C on average
The temperature of the surface of the skin remains stable in the range of 33°C to 36 °C under normal conditions. [1,2] The temperature of the skin and various parts of the body is a direct result of the blood flow, and the temperature distribution at the surface of the skin can give us an insight into the changes in vascularization in the body
[6] This type of hemodynamic analysis of the human body based on temperature is a new and diverse field and is especially novel when applied to children in the pediatric intensive care unit (PICU)
Summary
HUMANS have the ability to regulate their own body temperature, and keep it at a stable level between 36.5°C and 37.5 °C on average. All objects that have a temperature above absolute 0 K (-273 °C) emit infrared radiation. The prevalence and use of infrared sensors for body temperature measurement has surged. The efficacy of these sensors in the clinical setting is yet to be studied and validated for widespread use, especially in the case of critical care. The International Standards Organization (ISO) published a protocol for the use of IR cameras for temperature estimation and recommended that the inner canthus region of the eye is the only site on the face that is suitable for non-contact temperature measurement [7]. It is recommended for any studies that use IR cameras for core temperature detection to only use the inner canthus region of the eye to get the most accurate possible measurements
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