Chávez's breathing problems worsen, has severe new infection

Venezuelan President Hugo Chávez's breathing problems have worsened and he is suffering from a "severe" new respiratory infection as he struggles to recover from cancer surgery, the government said in a somber medical update.

The 58-year-old socialist leader has not been seen in public nor heard from in almost three months since undergoing the operation in Cuba. It was his fourth surgery since the disease was detected in mid-2011.

"Today there is a worsening of his respiratory function, related to his depressed immune system. There is now a new, severe infection," Information Minister Ernesto Villegas said, reading the latest brief statement on Chavez's condition.

Chavez made a surprise pre-dawn homecoming two weeks ago with none of the fanfare and celebration that had accompanied previous returns from treatment in Havana. The government said he is now fighting for his life at a Caracas military hospital. Armed guards are providing heavy security outside.

"The president has been receiving high-impact chemotherapy, along with other complementary treatments ... his general condition continues to be very delicate," Villegas said.

Chavez suffered multiple complications after the December 11 surgery, including unexpected bleeding and an earlier severe respiratory infection that officials said had been controlled.

The government said he had trouble speaking because he was breathing through a tracheal tube, but that he was giving orders to ministers by writing them down.

"The commander-president remains clinging to Christ and to life, conscious of the difficulties that he is facing, and complying strictly with the program designed by his medical team," Villegas said.

Chavez had undergone several grueling rounds of chemotherapy and radiation treatment, which at times left him bald and bloated. He twice wrongly declared himself cured.

The only sight of the former soldier since his latest operation were four photos published by the government while he was still in Havana, showing him lying in a hospital bed.

Following an emotional Mass at the military hospital on Friday, Vice President Nicolas Maduro - Chavez's preferred successor if he is unable to carry on as president - said the president had decided for himself several days earlier that he would return to Venezuela from Cuba.

Chavez was going to begin a "tougher and more intense" phase of his treatment, Maduro said, and he wanted to be in Caracas.