Medical staff rushed onto the pitch to give Eriksen assistance and the referee called off the match a quarter of an hour later.
Eriksen was subsequently taken to hospital in Odense, where the match was played.
“Christian is doing well and walked off the pitch by himself,” said Denmark team doctor Morten Boesen.
“As I see it, the pacemaker responded as it should.
“He was briefly unconscious, but regained consciousness very quickly, and we were quickly in contact with him.
“He will now undergo further examinations at the hospital to determine what caused the incident.”