electrocardiogram

The new rule, which kicks in next year, will require all high school athletes to get at least one electrocardiogram screening. The school board vote was 3-2.

The quick, painless electrocardiagram can pick up heart abnormalities that left undetected could lead to sudden cardiac arrest, a leading killer of student-athletes.

The focus heading into Apple's event was on its new iPhones, but it also unveiled a redesigned Apple Watch with a sensor allowing users to take an electrocardiogram they can share with their doctor.