Certified Hyperbaric Technologist Practice Test

Disable ads (and more) with a membership for a one time $2.99 payment

Prepare for the Certified Hyperbaric Technologist Test with comprehensive study materials including flashcards and multiple choice questions. Each question comes with detailed explanations and hints to aid your understanding. Get exam-ready now!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

Which electrode site is known to be the least accurate for TcpO2 readings?

Plantar surface of the foot
Forehead
Chest
Upper arm

The correct answer is: Plantar surface of the foot

The plantar surface of the foot is considered the least accurate site for TcpO2 (transcutaneous oxygen tension) readings due to several physiological factors. This area often has varying blood flow and temperature, which can significantly affect the accuracy of oxygen measurements. The foot contains a dense network of arteries and veins, and peripheral circulation may be compromised due to various conditions, such as peripheral vascular disease. Additionally, the skin on the plantar surface is thicker than on other parts of the body, which may contribute to delayed readings and inconsistencies in TcpO2 values. Other sites, such as the forehead, chest, and upper arm, are generally more reliable due to better perfusion and a thinner layer of skin, allowing for more accurate transcutaneous measurements. The forehead, in particular, benefits from good blood flow and is frequently used in clinical settings as a standard site for TcpO2 monitoring.