If your dog is straining to defecate it may be caused by an issue larger than constipation.
A condition called perineal hernia can develop as a result of weakening of the muscles of the pelvic diaphragm. This is a hole or defect between the muscles near the anus and tail that can allow abdominal contents or a dilated colon to slide into a space where they don’t belong.
The most common symptoms are swelling adjacent to the rectum on one or both sides along with signs of constipation, lethargy and difficulty defecating. This disease mainly affects older pets and non-castrated male dogs.
To diagnose a perineal hernia, your veterinarian will need to perform a thorough rectal examination. This should be done as soon as symptoms are noted as organ entrapment within the hernia may be life threatening.
Surgery to repair the hernia generally involves placing sutures to restore the pelvic diaphragm and incorporation of a muscle flap to strengthen the repair. It is also recommended to castrate patients during the procedure to help decrease the risk of re-occurrence.
Stool softeners are typically used immediately after surgery to help reduce straining with defecation. The prognosis for a perineal hernia is good for the majority of cases that receive surgical intervention.
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