Ayala has spent the past few days being evaluated by Braves doctors in Atlanta. Wren said the current belief is that the anxiety is a product of finding out that he had high blood pressure.
"He's been put on blood-pressure medication to hopefully ease the anxiety," Wren said. "But right now, it's just a function of him getting used to the medication and getting back to feeling well. It's a bit of a process to get those meds regulated."
Ayala has compiled a 3.86 ERA in the five appearances he has made for the Braves since being acquired in a trade with the Orioles on April 9. He allowed two hits and one run while recording just one out in the one appearance he made in Denver last week.
Carpenter has compiled a 3.52 ERA in six appearances with Gwinnett this year. The 27-year-old converted catcher has been utilized in multi-inning appearances to provide him a chance to get a better feel for his offspeed pitches.
Mark Bowman is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.