ETonline.com is reporting that Kelsey Grammer has been hospitalized with an irregular heartbeat. This comes on the heels of Kelsey Grammer’s heart attack scare in late May.

As a result of being hospitalized for an irregular heartbeat, Kelsey Grammer has cancelled four television appearances today. It’s believed that the medication Kelsey Grammer was taking for his heart attack may be a contributor to the irregular heartbeat.