But, eventually - without treatment - the dog's heart and pulmonary arteries become enlarged due to mechanical obstruction of the worms, inflammation and damage to the heart valves. (sunshinepaws.org)
For those canines who do not respond to the dietary or gastroprokinetic treatments, further examination for mechanical obstructions will be required. (wagwalking.com)
While these events are occurring, the dog's heart and pulmonary arteries are enlarging due to mechanical obstruction of the worms, inflammation and damage to the heart valves. (2ndchance.info)