When Using a Colorimetric End-Tidal Carbon Dioxide Detector, the Absence

question 94

Multiple Choice

When using a colorimetric end-tidal carbon dioxide detector, the absence of carbon dioxide in exhaled air after six breaths indicates that the endotracheal tube has been placed:

• A) in the right mainstem bronchus.
• B) in the esophagus.
• C) in the left mainstem bronchus.
• D) in the trachea.

---

Definitions:

Covalent Bonds

Atomic bonds created through the mutual sharing of pairs of electrons among atoms.

VSEPR

A model used in chemistry to predict the geometry of individual molecules from the number of electron pairs surrounding their central atoms.

Lewis Structures

Diagrammatic methods for representing the bonds between atoms in a molecule and the lone pairs of electrons that may exist.

Elemental Symbol

A one or two-letter abbreviation derived from the element's English or Latin name used to represent an element in chemical formulas.