title: Faecal impaction preventing engagement of the fetal head.
mesh_terms: D005244:Fecal Impaction / Q000150:complications*; D005260:Female; D006801:Humans; D007746:Labor Presentation; D010387:Pelvimetry; D011247:Pregnancy; D011248:Pregnancy Complications / Q000175:diagnosis / Q000209:etiology*; D014463:Ultrasonography