The damage to the lung blood vessels from the worms, creates extra resistance for the heart to pump against and often episodes of collapse occur with exercise. (vin.com)
In those with acute pericardial effusion, acute episodes of collapse and weakness may be evident.2 As pericardial fluid accumulates, shock and death can occur. (todaysveterinarynurse.com)
This disease most commonly causes heart arrhythmias that can result in episodes of collapse or fainting and even sudden death. (uvsonline.com)