Until now, the family has been playing a form of charades in an attempt to decipher her words, which the ventilator's presence has been made difficult to understand, she said.

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"In order to improve the draft, the vent is preheated by means of electric resistance and it's equipped with a ventilator for use if necessary, " the Vatican said in a statement.

CNN: March 13, 2013 -- Updated 0018 GMT (0818 HKT)

Many of the capital's existing hotels are cramped and basic, with windows that look onto ventilator shafts or grubby side streets rather than the capital's tourist glories.

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Carl and Debbie Henshall's daughter Stacey died on a ventilator at North Staffordshire Hospital in February 1992.

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Finally, in what's called the apnea test, the ventilator is disconnected to see if you can breathe unassisted.

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The coroner's court heard they were put on to a ventilator and given a dose of morphine, which was standard practice, but there was confusion over the exact amount that should be administered.

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Castro also said that it's normal for a patient's face to swell up after being on a ventilator for a long time, though he also speculated the puffiness could be due to medications Chavez has been taking.

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At Cincinnati Children's Hospital Medical Center in Ohio, such steps resulted in a 90% reduction in ventilator pneumonia.

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