TV shows are entertaining and sometimes even educational. But in the case of one German patient and his doctor, a popular television drama was life-saving. A 55-year-old man was suffering from severe heart failure and a puzzling mix of symptoms, including fever, blindness, deafness and swollen lymph nodes. His condition stumped doctors for months. It wasn’t until he was referred to Dr. Juergen Schafer of the Centre for Undiagnosed Diseases in Marburg, Germany, that he finally figured out what was wrong, thanks in large part to the doctor’s love of the television medical drama, “House.” The man’s symptoms were nearly identical to a patient in an episode in which the fictional Dr. House identified heart failure from cobalt poisoning as the source.