Quaid's children Thomas Boone and Zoe Grace--born on Nov. 8--are in intensive care in Cedars-Sinai Medical Center in Los Angeles after they were given 10,000 unit doses of anticoagulant Heparin by mistake, instead of the standard 10 units.
On Tuesday, the hospital's Chief Medical Officer, Michael L. Langberg, admitted the error was "preventable" and involved "a failure to follow our standard policies and procedures."
He has also apologized to the distraught couple, according to reports.
In a statement to E! News, Quaid's representative Cara Tripicchio says, "Dennis and Kimberly appreciate everyone's thoughts and prayers and hope they can maintain their privacy at this difficult time."
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