Usher's wife was in a coma following a heart attack during liposuction surgery, according to the latest details to emerge in the medical emergency at a Brazilian hospital, reports Stuff.co.nz. Tameka Foster went into cardiac and respiratory arrest as she was being anesthetized, Brazilian papers are reporting. Doctors induced a coma as a life-saving measure. She's reportedly in stable condition now. Kanye West's mother died in 2007 after cosmetic surgery complications.