Refractory Hypokalemia in Secretory Diarrhea Phenotype of Colonic Pseudo-Obstruction (Ogilvie's Syndrome).

Colonic pseudo-obstruction is an acute non-obstructive colonic dilation associated with constipation or secretory diarrhea. The secretory diarrhea phenotype is associated with refractory hypokalemia that may require different interventions to treat. We present a case of a 51-year-old male who was admitted with a hemorrhagic stroke whose hospital course was complicated by severe abdominal distension, diarrhea, and hypokalemia. Initial investigations excluded infectious causes. Imaging confirmed colonic pseudo-obstruction. The hypokalemia was severe and refractory, requiring daily potassium replacement along with rectal tube decompression and spironolactone. Despite these interventions, the hypokalemia persists and requires nearly 100 days to resolve completely.