What percentage of TBI patients experience HO? 10-30%

What is pernicious anemia? Pernicious anemia is a form of vitamin B12 deficiency where intrinsic factor is poorly produced.  Intrinsic factor binds vitamin B12 and allows its' absorption in the intestines.

What are the symptoms of a vasospasm and when are they typicaly seen after SAH?   Signs of vasospasm are similar to stroke symptoms.  The vessel narrows decreasing blood flow to the area leading to neurologic symptoms of that vessel territory.  They are typically seen between 4 days and 2 weeks after initial insult.

What part of the brain are you testing when asking the patient to perform rapid alternating movements?   Rapid alternating movements, called dysdiadochokinesia, is a function of the cerebellum.