<prompt> In which of the following condition is spastic ileus seen?PorphyriaRetroperitoneal abscessHypokalemiaMI  <response>: Spastic, or dynamic ileus is rare and results from extreme and prolonged contraction of intestine. It is seen in: Heavy metal poisoning Uremia Porphyria Extensive intestinal ulceration Ref: Harrison 17e, Page 1912. 