question: my mother has a Hb level of 4.1 - 4.2 and she is almost comatose..though her body functions are well monitred, blood pressure level is around 170 and urine output is also around 100 ml/hr....she is not responding to any voice commands..just in a sleep mode...she had to undergo hemodialysis for the first time and that too 9 times..in 10 days....can this be because of low Hb