Anesthesia Technician Practice Exam

Which method yields a less reliable core temperature reading?

1. Invasive monitoring

2. Oral measurement

3. Skin measurement

4. Rectal measurement

The correct answer is: Skin measurement

Core temperature measurement is essential for patient safety during anesthesia and surgery. Skin measurement is considered less reliable compared to other methods because it is influenced by external factors such as ambient temperature, air movement, and the patient's metabolic state. Skin temperature readings can vary significantly based on these variables and may not accurately reflect the actual core body temperature. In contrast, invasive methods such as rectal, esophageal, or bladder measurements provide direct readings of core temperature and are less affected by external factors. Oral measurement is also more reliable than skin measurement, although it can be influenced by recent ingestion of food or liquids. Understanding the differences in temperature measurement methods helps ensure accurate monitoring and patient safety during procedures.