BUENOS AIRES, Argentina — Doctors have decided to perform surgery on Argentine President Cristina Fernandez to remove blood from inside her skull and relieve pressure on her brain.

A hospital statement says the operation will take place Tuesday morning.

The president's doctors ordered a month's rest on Saturday after discovering the subdural hematoma — blood that had been collecting between her brain and skull.

But the Fundacion Favaloro hospital announced that doctors decided to operate after her condition worsened on Sunday evening, when she felt a weakness and lack of blood flow in her upper left arm.


Argentina’s President Cristina Fernandez arrives to a local hospital, in Buenos Aires, Argentina, Monday, Oct. 7, 2013. Argentine president is back
Argentina's President Cristina Fernandez arrives to a local hospital, in Buenos Aires, Argentina, Monday, Oct. 7, 2013. Argentine president is back in the hospital, presumably for more treatment of the head injury that prompted doctors to order a month's rest. Her car entered the Fundacion Favaloro hospital on Monday, as Cabinet members gathered without her in the government palace for a speech by Vice President Amado Boudou, who wished her strength and said they would carry on, "giving her the rest she deserves." (AP Photo/Pablo Molina,DyN) (Pablo MOlina/AP)