MESA, Ariz. – The Chicago Cubs issued no report on Mark DeRosa’s visit to a Chicago cardiologist Tuesday, but manager Lou Piniella expects the 33-year-old second baseman back in camp on Monday.

“From every indication we’ve gotten on DeRosa, he’ll be back then,” Piniella said.

DeRosa flew to Chicago Monday after experiencing a lengthy irregular heartbeat Saturday during a workout.

He was kept overnight at Banner Desert Medical Center in Mesa as a precaution. DeRosa later told reporters he has experienced an irregular heartbeat, or atrial dysrhythmia, since he was a teenager.

DeRosa will miss at least four exhibition games, which will afford Piniella an opportunity to look at no less than six players at second base, including Alex Cintron, Ronny Cedeno, Mike Fontenot and Eric Patterson.

Cintron, who signed a minor league contract Feb. 18 with an invitation to camp as a non-roster player, will get the first look Thursday when the Cubs visit the San Francisco Giants in Scottsdale, Ariz.

Cintron, 29, spent the last two seasons with the cross-town White Sox but played only 68 games and batted .243 following offseason surgery on his right elbow in 2007.

Except for DeRosa, all the Cubs have been injury-free in spring training. “We’ve been fortunate,” said Piniella. “They’re all ready to go. We haven’t had one sore arm or tight shoulder in camp.”