compare the operating condition of two different levels of muscle relaxation on facial nerve monitoring using transcranial motor evocked potential in CPA surgery . * To Estimate End to start facial nerve MEP amplitude ratio * To determine the effect of neuromuscular relaxant degrees on recovery and * Assessment of propofol doses needed for enhancement of early recovery and ambulation.
40 Patients aged from 18-60 years old undergoing Cerebellopontine angle surgery. Patients will be one of two groups: Both Induction will be accomplished with fentanyl, propofol , rocronium infusion will be given randomly to one of the groups. Depth of anaesthesia, neurotransmitter monitoring and facial nerve neurophysiological monitoring will be done.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
SCREENING
Masking
TRIPLE
Enrollment
40
compare the operating condition of two different levels of muscle relaxation on facial nerve monitoring using transcranial motor evocked potential in CPA surgery
Cairo university medical school
Cairo, Egypt
End to start facial nerve MEP amplitude ratio.
TCMEP recording will begin (1) prior to skin incision as baseline amplitude before muscle relaxant be taken for intubation (2) at Dural closure and end \\start amplitude ratio will be calculated.
Time frame: 6 to 8 month
number of hypotension episodes and the use of vasopressors
hemodynamic condition
Time frame: 6 to 8 month
Total volume of propofol and fentanyl infused
Calculate dose consumption
Time frame: 6 to 8 month
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