Impaction of the bowels
Prevention of fecal impaction focuses on preventing constipation. Add fiber to the diet to promote normal stools. Also, get enough fluids and exercise to help in the formation of normal stool.
Always respond promptly when you have the urge to go to the bathroom (defecate).
Nelson H. Diseases of the rectum and anus. In: Goldman L, Ausiello D, eds. Cecil Medicine. 23rd ed. Philadelphia, Pa: Saunders Elsevier; 2007: chap 148.