stomas

A stoma is a surgically created opening that connects a hollow viscus to the skin surface, allowing diversion of stool, urine, or air either temporarily or permanently, with common types including colostomy, ileostomy, and urostomy classified by function, duration, construction, and output characteristics. Understanding stoma management is clinically significant because these patients require careful monitoring for complications such as parastomal hernia, prolapse, retraction, and fluid-electrolyte imbalances—particularly with high-output ileostomies that can produce up to 1.5-2 liters daily, leading to dehydration and metabolic acidosis. Medical students must recognize the surgical principles of stoma creation, differentiate between loop, end, and double-barrel configurations, and appreciate the physiological consequences and psychosocial impact on patients requiring long-term appliance care and potential reversal procedures.