Noor has a shunt in her brain to relieve pressure from fluid buildup, and she often experiences urinary tract infections that could possibly lead to renal failure.
Doctors removed one side of her skull and her eye socket to release pressure on her brain from bleeding.
Giffords had hydrocephalus after she was shot, a condition where an excess of cerebral-spinal fluid puts pressure on the brain.
Since being diagnosed with testicular cancer Hartson has had surgery to relieve pressure on his brain and is undergoing radiotherapy treatment.
He said doctors told him that if he had not gotten to the hospital and had emergency surgery to relieve pressure on his brain he might have died that night, according to the arrest affidavit, which says he suffered a skull fracture and a brain hemorrhage.
If necessary, they'll also use an intra-cranial pressure monitor inserted into brain tissue, doctors at the Tucson hospital said.
WSJ: Rep. Gabrielle Giffords's Brain at Risk Despite Quick Aid After Shooting
"There's only so much swelling brain can tolerate until there's pressure on the nerves that control breathing and circulation, " said Dr. Roger Bonomo, director of stroke care at Lenox Hill Hospital in New York.
Gregory S. Berns, a psychiatrist at Emory, is using brain imaging to demonstrate the effects of peer pressure on individual perception, with the idea of explaining the development of fads, from investment trends to the popularity of Burberry plaids and belly button rings.
Otherwise, the pressure in her cranium would have caused severe brain damage, likely killing her.
Brain, who played 285 games for Gloucester and went on to become head coach at Worcester, knows all about pressure at rugby's highest level.
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