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Determining cold-stress in full-term newborns through temperature site comparisons
Scholarly Inquiry for Nursing Practice
|January 1, 1991
Summary
This study explored infant temperature site relationships to detect cold stress early. Comparing axillary and rectal temperatures in newborns can indicate potential issues before core temperature drops.
Area of Science:
- Neonatal physiology
- Infant thermoregulation
Background:
- Cold stress is a significant risk for newborns.
- Early detection of cold stress is crucial for preventing complications.
- Core temperature monitoring may not always provide the earliest indication of thermal stress.
Purpose of the Study:
- To investigate the relationship between axillary and rectal temperatures in full-term infants.
- To determine if temperature differentials can predict cold stress before a core temperature decrease.
- To identify distinct infant groups based on axillary and rectal temperature comparisons.
Main Methods:
- Secondary analysis of data from 120 full-term infants.
- Simultaneous axillary and rectal temperature measurements every 30 seconds using mercury-in-glass thermometers.
- Categorization of infants into three groups based on temperature site differentials.
Main Results:
- Group 1: Rectal temperature higher than axillary (neutral environment).
- Group 2: Equal axillary and rectal temperatures.
- Group 3: Axillary temperature higher than rectal (suggesting brown adipose tissue metabolism to maintain core temperature).
Conclusions:
- Temperature relationships between axillary and rectal sites offer insights into an infant's thermal state.
- Specific differentials may indicate a neutral environment or active thermogenesis via brown adipose tissue.
- Further research could refine these differentials for early cold stress detection in neonates.