In addition to winning two Oscars who also won an Emmy for her portrayal of Maggie wyczenski the bi-polar mother Chicago er nurse abby lockhart?

The actress you are describing is Edie Falco. She won two Oscars for her role as Carmela Soprano in the HBO series "The Sopranos" and an Emmy for her portrayal of Maggie Wyczenski in the Showtime series "Nurse Jackie".