Certified Respiratory Therapist Practice Exam

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Prepare for the Certified Respiratory Therapist Exam with our engaging quiz, complete with multiple-choice questions and detailed explanations. Boost your confidence and knowledge before test day!

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What is the consequence of using a suction catheter that is too large for the ET tube?

Increased suction pressure
Decreased airflow
Potential blockage of the ET tube
Temporary loss of ventilatory support

The correct answer is: Potential blockage of the ET tube

Using a suction catheter that is too large for the endotracheal (ET) tube can indeed lead to potential blockage of the ET tube. When the suction catheter's diameter exceeds that of the ET tube, it can create an obstruction within the tube, preventing adequate airflow. This blockage may hinder the passage of air into and out of the patient’s lungs, which is critical for maintaining proper ventilation and oxygenation. This scenario can elevate the risk of complications, including hypoxia, as the effective air passage is compromised. In clinical practice, selecting the appropriate size for the suction catheter is key to ensuring effective suctioning while safeguarding unobstructed airflow through the ET tube. Therefore, understanding the relationship between catheter size and ET tube diameter is essential for respiratory therapists to prevent potential airway management issues during suctioning procedures.