sentences:  In 2003, Babec was diagnosed with end-stage heart failure due to fibrosing cardiomyopathy after he exhibited symptoms including coughing, lethargy and loss of appetite and indications of chest pains.As part of his therapeutic diet, zoo veterinarian E. Marie Rush prescribed antacids, antibiotics, diuretics and two 30-oz servings of grape-flavor Powerade per day, which was donated by the Birmingham Coca-Cola Bottling Company.On September 25, 2004, Babec became the first gorilla to undergo the successful implant of a cardiac resynchronization therapy device (a type of advanced pacemaker).