Former Emperor Akihito has been diagnosed as suffering heart failure, the Imperial Household Agency said Tuesday, but he is on the mend after receiving treatment, and there are no plans for him to be hospitalized.The 88-year-old received the diagnosis after undergoing a heart examination at University of Tokyo Hospital on Sunday, according to the agency. The exam found that a valve in his heart did not close sufficiently to prevent blood backflow.The former emperor has been on a course of medication since the end of June and has seen improvement in his health, it said."It may be affected by…READ FULL ARTICLE