However, many experts now agree that the best way to detect the disease at the earliest possible stage is to perform a test called a Holter monitor. This test involves recording an EKG for 24 hours, and reviewing for abnormal beats. It is recommended some form of Holter monitor screening be performed annually on any Boxer, starting at a year of age. This will help screen out of the breeding population affected individuals as soon as possible, and will help those who may be affected get the earliest possible treatment. Studies do suggest that early treatment may help prevent further deterioration of the heart.
Heredity plays a role, as do diet, exercise during growth, and many other factors in the dogs life.
Two types of screenings for hip dysplasia are available, though experts have widely varying opinions about their usefulness. OFA claims great success, as the numbers of x-rays they receive that are reviewed as positive for hip dysplasia have decreased since the screening began. Other experts are skeptical, and say that people have just learned what will pass, and don't bother to send in those they think won't pass. PennHip involves sedating the dog, and taking x-rays of the hips in three positions. All dogs tested must have x-rays sent in, so some feel the data is more complete and accurate than the OFA system.