ACCS Practice Exam 2025 – Complete Test Preparation Guide

Question: 1 / 400

What size endotracheal tube is typically appropriate for the average adult male?

6.0 - 7.0

7.5 - 8.5

The typical size for an endotracheal tube used in the average adult male is indeed within the range of 7.5 to 8.5 mm in internal diameter. This size range is preferred because it balances the need for adequate airflow and minimizes trauma to the trachea during intubation and ventilation.

Endotracheal tubes of this size allow for efficient ventilation, reducing the resistance to airflow, which is particularly important in critical care settings where patient safety and comfort are paramount. Additionally, using a tube that is too small can lead to increased work of breathing and potential hypoxemia, while using one that is too large may cause damage to the airway tissue or make placement difficult. Therefore, the choice of 7.5 to 8.5 mm aligns well with the typical anatomical considerations and physiological needs in adult males.

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8.0 - 9.0

9.0 - 10.0

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