"Bush, now age 92, has decided not to seek additional medical treatment and will instead focus on comfort care", McGrath said.
Former first lady Barbara Bush, the wife and mother of two presidents, has chose to end medical treatment for a life-threatening illness.
She has had a series of recent hospitalizations, but the family did not provide details about her condition.
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Mr McGrath says Mrs Bush is surrounded by "a family she adores" and appreciates the many kind messages and prayers she has been receiving.
She has been married to former president George H.W. Bush for 73 years - since 1945 - and the couple has six children. She is the mother of former President George W. Bush and former Florida Governor Jeb Bush. The other was Abigail Adams, wife of John Adams and mother of John Quincy Adams. In Jan. 2017, they were both hospitalized for separate health issues and were unable to attend President Trump's inauguration. She was also the 33rd Second Lady of the United States during her husband's term as vice president. Months earlier, he was a Houston's Methodist Hospital for 16 days, also for pneumonia. Bush would travel the world representing the US before turning their sights to The White House, first as the Vice President and Second Lady during the Ronald Reagan administration, then the 1988 Presidential election. Her father was the publisher of McCall's and Redbook magazines.
She continued: "Also, George Bush has given me the world".
All along, Barbara Bush has been regarded as an invaluable asset with a grandmotherly persona that could belie a forthright outspokenness.