Dr. Raghul M
M.Ch (Gold Medalist) • Pediatric Surgeon & Pediatric Urologist
Vomiting is an everyday occurrence in childhood. Almost every child experiences episodes of throwing up due to viral stomach bugs (gastroenteritis), dietary indiscretions, motion sickness, or food poisoning. When a child throws up curdled milk, stomach acid, or undigested food accompanied by mild diarrhea, standard pediatric supportive care and oral rehydration are typically all that is needed.
However, there is one visual warning sign that every parent must recognize: **green vomitus**. In pediatric surgery, bright green, dark green, or spinach-colored vomit is universally classified as an absolute emergency red flag.
Dr. Raghul M
@dr_raghul_maniam • Clinical Reel
Are All Vomiting Episodes Dangerous in Children? Green / Bilious Vomitus Red Flag
Click to watch reel
Why is green vomiting so perilous? Bile is a digestive fluid produced by the liver that enters the digestive tract at the second part of the duodenum (via the Ampulla of Vater). Under normal conditions, bile travels downward through the small and large intestines, giving stool its normal brown color.
When a child vomits bright green fluid, it means bile is physically unable to pass downward through the digestive tract. It has met a mechanical obstruction lower down in the intestine and has refluxed backward into the stomach. In young infants, the most catastrophic cause of bilious vomiting is malrotation with midgut volvulus—a condition where the intestine twists around its narrow mesenteric blood supply like a twisted towel.
In midgut volvulus, the twisted mesentery completely chokes off blood flow to the entire mid-intestine. If surgery is not performed within hours to untwist the bowel (Ladd's procedure), the entire intestine can develop irreversible gangrene, resulting in short bowel syndrome or fatal sepsis.
Other causes of bilious vomiting include intussusception, incarcerated inguinal hernias, and congenital intestinal atresias. If your child throws up green fluid, never administer anti-nausea syrups or wait until morning to see if it improves. Transport your child to a tertiary pediatric surgical emergency department immediately. Timely decompression saves the bowel and saves the child's life.
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