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Mechanical Vent Test 3 Practice

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During airway suctioning, patients may experience transient desaturation and tachycardia. Which measures reduce these effects?
Correct Answer:
Closed suctioning, preoxygenation, and limit suction duration
Explanation:
During airway suctioning, the brief interruption of ventilation and removal of oxygen can cause a drop in oxygen levels and a vagal response that raises heart rate. Using a closed suction system keeps the patient connected to the ventilator, preserving oxygen delivery and airway pressures so less oxygen is lost during the procedure. Preoxygenation with high FiO2 before suctioning builds an oxygen reserve, helping the patient tolerate the transient apnea. Limiting the duration of each suction pass minimizes the time the patient is not ventilated, reducing the risk of desaturation and tachycardia. Together, these measures address the main causes of the undesired effects during suctioning.

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