In neonates with CDH, what is the purpose of inserting an orogastric or nasogastric tube?

In neonates with CDH, what is the purpose of inserting an orogastric or nasogastric tube?

• A. Evacuate the stomach to reduce intrathoracic pressure
• B. Deliver nutrition
• C. Measure gastric pH
• D. Provide airway protection

Answer: (A)

In neonates with congenital diaphragmatic hernia, the stomach and sometimes other abdominal contents can herniate into the chest and become distended. This distension increases intrathoracic pressure and further compresses the already compromised lungs, making ventilation and oxygenation during anesthesia much harder. An orogastric or nasogastric tube with suction is placed to evacuate gas and stomach contents, thereby decompressing the stomach. This reduces the volume within the thorax, decreases mediastinal shift, and improves lung expansion and ventilation. It also lowers the risk of gastric rupture and aspiration during positive-pressure ventilation and airway management. This is not primarily about delivering nutrition, measuring gastric pH, or providing airway protection, though those aren’t entirely irrelevant in other contexts. The key purpose here is to decompress the stomach to reduce intrathoracic pressure and facilitate safe ventilation.

In neonates with congenital diaphragmatic hernia, the stomach and sometimes other abdominal contents can herniate into the chest and become distended. This distension increases intrathoracic pressure and further compresses the already compromised lungs, making ventilation and oxygenation during anesthesia much harder. An orogastric or nasogastric tube with suction is placed to evacuate gas and stomach contents, thereby decompressing the stomach. This reduces the volume within the thorax, decreases mediastinal shift, and improves lung expansion and ventilation. It also lowers the risk of gastric rupture and aspiration during positive-pressure ventilation and airway management.

This is not primarily about delivering nutrition, measuring gastric pH, or providing airway protection, though those aren’t entirely irrelevant in other contexts. The key purpose here is to decompress the stomach to reduce intrathoracic pressure and facilitate safe ventilation.