Florida State Paramedic Practice Exam

What effect can abdominal distention have on ventilation?

1. Improved airway patency

2. Increased diaphragm movement

3. Pushed diaphragm down, leading to vomiting

4. Better lung capacity

The correct answer is: Pushed diaphragm down, leading to vomiting

Abdominal distention can have a significant impact on ventilation, primarily by pushing the diaphragm downward. When the abdomen becomes distended, it exerts pressure on the diaphragm, which can restrict its upward and downward movement during respiration. This restriction can lead to an inability to fully expand the lungs, contributing to reduced effective ventilation and potentially increasing the risk of vomiting, especially in patients who may already be at risk for aspiration or have compromised protective airway reflexes. Distention can impede proper diaphragm function, making it difficult for the diaphragm to return to its resting position, which is essential for normal inhalation and exhalation. This downward push can limit the volume of air the lungs can accommodate and the effectiveness of the patient’s breathing efforts. Understanding this relationship is crucial for paramedics and medical personnel when assessing and managing patients who may present with abdominal distention, ensuring appropriate interventions are taken to facilitate optimal ventilation.