She listens to his heart, first, then his lungs. "Breathe deeply for me," she requests. After several seconds, she asks, "Now breathe normally." She moves the stethoscope to his back, going in from behind his collar and listens carefully.

She sets aside her stethoscope and retrieves a small plastic device. It looks like a cross between a kazoo and a ruler, with numbers along the side and a little plastic knob at the bottom, near the mouthpiece. "I want to test your lung capacity," she explains. "Take a deep breath in and then blow out, as hard as you can, for as long as you can."