Diagnosis 1. Symptoms “I don’t think he had a heart attack,” the patient’s wife declared emphatically. “I don’t care what the doctor in the hospital said.” The patient nodded his agreement. “But we need to be sure,” she added in a distinctive Long Island accent. That’s why they had gone to see Dr. Bruce Decter in New Hyde Park, N.Y., a cardiologist just out of training — to get a second opinion from someone a little closer to the books. The patient, a lanky 42-year-old man with a chiseled jaw, retreating hairline and skinny ponytail, seemed tired and anxious and...