The clinical problem of stress ulcers

Area of Science:

• Gastroenterology
• Critical Care Medicine
• Pathophysiology

Background:

• True stress ulcers are superficial gastric lesions associated with severe physiological stress like shock, trauma, burns, and sepsis.
• Differentiating stress ulcers from Cushing's ulcers, chronic ulcer exacerbations, and drug-induced gastritis is crucial due to distinct pathogenetic mechanisms.

Purpose of the Study:

• To elucidate the etiology and clinical manifestations of true stress ulcers.
• To discuss the efficacy of prophylactic measures and the challenges in managing stress ulcer hemorrhage.

Main Methods:

• Review of the pathophysiology linking ischemia and tissue acidosis to stress ulcer formation.
• Evaluation of the role of luminal acid and pepsin in ulceration.
• Assessment of prophylactic strategies including antacids and H2 receptor antagonists.

Main Results:

• The primary clinical manifestation of stress ulcers is hemorrhage.
• Prophylaxis using antacids, alone or with H2 receptor antagonists, is highly effective when gastric pH is monitored.
• Established hemorrhage from stress ulcers is associated with high morbidity and mortality.

Conclusions:

• Stress ulcer etiology is primarily driven by ischemia and tissue acidosis, requiring luminal acid and pepsin for ulceration.
• Effective prophylaxis can be achieved through careful pH monitoring and appropriate medical interventions.
• Management of bleeding stress ulcers remains a significant clinical challenge with poor outcomes.