Who was the first American woman to win four titles in a single Olympiad?

Amy Deloris Van Dyken-Rouen (born February 15, 1973) is an American former competitive swimmer, Olympic champion, former world record-holder, and national radio sports talk show co-host. She won six Olympic gold medals in her career, four of which she won at the 1996 Summer Olympics, making her the first American woman to accomplish such a feat and the most successful athlete at the 1996 Summer Olympics. She won gold in the 50-meter freestyle, 100-meter butterfly, 4×100-meter freestyle relay, and 4×100-meter medley relay.

Van Dyken suffered from severe asthma throughout her childhood and into adulthood. She began swimming on the advice of a doctor as a way to strengthen her lungs to cope with her condition and prevent future asthma attacks.

On June 6, 2014, Van Dyken was injured in a severe All-terrain vehicle (ATV) accident that severed her spinal cord, leaving her paralyzed from the waist down.