Doctors used a defibrillator twice on Hosni Mubarak when they could not find a pulse Monday, the latest health crisis for the ousted Egyptian president since he was sentenced to life and moved to a prison hospital nine days ago, security officials said. The officials said the 84-year-old Mubarak was slipping in and out of consciousness and was being fed liquids intravenously. Mubarak also lost consciousness several times Sunday and officials have said he is suffering from high blood pressure, depression and breathing difficulties.Mubarak's health scare adds one more layer to Egypt's turbulent political scene with a runoff vote to choose his successor a few days away. His death would bring down the curtain on a chapter of Egypt's modern history that has divided this mainly Muslim nation of 85 million people.