In which emergency situation would you most likely pass a stomach tube in a dog?

Passing a stomach tube in a dog is most commonly indicated in the case of gastric-dilatation-volvulus (GDV). This life-threatening condition involves the stomach twisting upon itself, leading to accumulation of gas and fluid, and can result in severe gastric distension. By passing a stomach tube, the veterinary professional can decompress the distended stomach, which is critical for relieving pressure, restoring normal blood flow to the stomach, and preventing further complications such as perforation or shock.

In contrast, while mesenteric torsion, intestinal intussusception, and perforated stomach might also present with gastrointestinal distress, the primary interventions for those issues would focus on surgical intervention and stabilization rather than the routine use of a stomach tube for immediate relief. In these cases, the risk of significant manipulation or introduction of foreign materials could exacerbate the condition. Therefore, passing a stomach tube is most warranted during an emergency involving GDV due to its need for prompt decompression of the stomach.