Mitch McConnell remains hospitalized but is improving, his office said in an update that emphasized continued engagement in his duties.Emergency dispatch audio from the June 14 response to his Washington, DC home indicates first responders reported a cardiac arrest and performed cardiopulmonary resuscitation while advanced life support units arrived.Spokesperson David Popp said the senator is working with his staff on Kentucky and Senate matters while the Senate is out of session, but that he will miss votes as he recuperates.The office declined to disclose specific medical details; the hospitalization follows earlier health problems including a concussion and broken ribs, and the team publicly rebutted false online reports of his death.