The Murmur in Room 4B

In her third week of clinical rotations at Johns Hopkins, medical student Priya Anand pressed her stethoscope to an elderly patient's chest and heard something she couldn't quite name. A faint whooshing between heartbeats. She noted "heart sounds normal" on her chart and moved on. The next morning, attending physician Dr. Margaret Chen reviewed the chart, then handed Priya the stethoscope.…