This study is a semi  experimental  one and its  purpouse  is to  determine

   the   effect   of   intratracheal   suctioning   on   blood  pressure  of  patients

   admitted to Tabriz imam Khomaini hospital  in 1997.

         Data   were  collected by a questionnair from 35 patients  with  nervous

   and respiratory complications.

         The  findings  showed that blood pressure means of admited  patients in

   I.C.U increased 9.91mmHg immediately after suction  relative to presuction

   measurment.  The  arterial  blood  pressure   mean  5 minutes  after  suction

   increased 3.26 mmHg  relative  to   presuction measurment and the arterial

   blood mean  5  minutes  after  suction  descreased 6.65 mmHg   relative  to

   immediately  after suction measurment.The comparison  of  blood  pressure 

   alteration bettween 3 steps: befor  suction  with  immediately  after suction,

   befor suction with 5 minutes after suction , immediately  after  suction with 5

   minutes after   suction  on  the  basis  of  sex , age(32-45 years  old) , type of

   disease of brain and  nervous system and both of the type of air ways were

   significant.