EtCO2 values are reported in which unit?

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Prepare for the NOVA Clinical Anesthesia Exam 1. Familiarize yourself with key concepts in anesthesia, get tested on-depth with multiple-choice questions, and use hints and explanations to enhance learning. Start your study journey today!

Multiple Choice

EtCO2 values are reported in which unit?

Explanation:
EtCO2 is a partial pressure of CO2 in the exhaled gas at the end of expiration, so it’s a pressure measurement. The standard unit for this value is millimeters of mercury (mmHg). While some devices may display kPa in metric units, mmHg is what you’ll see most in anesthesia practice and exams. Concentration units like percent or ppm are used for amounts, not pressure, so they aren’t appropriate for EtCO2.

EtCO2 is a partial pressure of CO2 in the exhaled gas at the end of expiration, so it’s a pressure measurement. The standard unit for this value is millimeters of mercury (mmHg). While some devices may display kPa in metric units, mmHg is what you’ll see most in anesthesia practice and exams. Concentration units like percent or ppm are used for amounts, not pressure, so they aren’t appropriate for EtCO2.

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