When shock occurs due to upper gastrointestinal bleeding, the most urgent treatment measure is to quickly establish intravenous access and actively and rapidly replenish fluids and blood volume. Consideration can be given to the intravenous drip of balanced solutions, Ringer's solution or 5% glucose saline. Fluid replenishment should follow the principles of starting quickly then slowing, and using crystalloids before colloids.

At the same time, after shock correction, it is crucial to perform a thorough gastroscopic examination to identify the cause and location of the bleeding, and to undertake the relevant endoscopic treatments. Additionally, patients with upper gastrointestinal bleeding need comprehensive treatment including suppressing acid secretion and protecting the gastric mucosa.