Decoding a misnomer:
Awake Craniotomy
Dr Unnikrishnan P MD,PDCC,MBA
Associate Professor
Neuroanaesthesia Division
SCTIMST
2
Conventional terminology may mask reality
Awake Craniotomy
Craniotomy with
Intraoperative
awakening
It’s a team work
Challenging task for the
anaesthesiologist
╺ Invasive procedures in a patient who is not anaesthetized
╺ A meticulous scalp block
╺ Carefully titrated sedation/anaesthesia
╺ Unique complications to deal with
4
Careful selection of the patient
5
╺ OSAS
╺ Anticipated difficult airway
╺ Psychiatric disorder
╺ Chronic cough
╺ Sinus infiltration
Be on the right side; you
need some artistic skills
too!
╺ A realistic explanation of what to expect
╺ Psychological preparation and support
╺ Controlling the nuances in the
anaesthetic and analgesic levels
6
Be a perfectionist while
positioning
7
╺ Cushioning
╺ Tent
╺ Access: to face and airway
╺ O2 mask
╺ EtCO2 sampling line
╺ Claustrophobia
╺ House keeping
8
You will miss GA
╺ Position
╺ Do fast
╺ Ventilation: ? tight brain
╺ Bleeding
╺ Well sedated? Well…
╺ Extreme head rotation
Please don’t post for AC
9
Powerless positions
╺ Limited airway access with the clamp
╺ Fluid management difficult
╺ Management of bleeding difficult
╺ Positioned at foot end and patient is without any
airway gadget
╺ Hyperventilation (X)
╺ Certain positions less tolerated
A hotline is necessary
11
╺ LA
╺ Time gap-Mapping/Resection
╺ Dura
╺ Pain
╺ Closure
You need to be
Dr Strange
12
╺ Seizures (No airway gadget in place):
Rx ice cold saline
╺ Pain (Further narcotics will affect
testing): transcortical resection
╺ Loss of airway (Head on clamps): SGA
Possible costly misses by an
occasional practitioner
13
╺ Missing the C/I eg OSAS, psychological issues
╺ Different preparation of the OT
╺ Subtle points during positioning: eg L clamp
╺ Fine titration and timing of stoppage of the agents
╺ Continuous communication
Possible costly misses by an
occasional practitioner
14
╺ Selection of the drug
╺ Under dosing
╺ Over dosing
╺ OSAS patient
╺ Opioids
╺ Phenytoin
╺ Antiemetics
╺ Airway loss management
╺ Seizures
That
concludes
the
story
of
15
Thanks!
Any questions?
You can find me at drunnikrishnanp@gmail.com
16

Awake Craniotomy and the neurosurgeon.pptx

  • 1.
    Decoding a misnomer: AwakeCraniotomy Dr Unnikrishnan P MD,PDCC,MBA Associate Professor Neuroanaesthesia Division SCTIMST
  • 2.
  • 3.
    Conventional terminology maymask reality Awake Craniotomy Craniotomy with Intraoperative awakening It’s a team work
  • 4.
    Challenging task forthe anaesthesiologist ╺ Invasive procedures in a patient who is not anaesthetized ╺ A meticulous scalp block ╺ Carefully titrated sedation/anaesthesia ╺ Unique complications to deal with 4
  • 5.
    Careful selection ofthe patient 5 ╺ OSAS ╺ Anticipated difficult airway ╺ Psychiatric disorder ╺ Chronic cough ╺ Sinus infiltration
  • 6.
    Be on theright side; you need some artistic skills too! ╺ A realistic explanation of what to expect ╺ Psychological preparation and support ╺ Controlling the nuances in the anaesthetic and analgesic levels 6
  • 7.
    Be a perfectionistwhile positioning 7 ╺ Cushioning ╺ Tent ╺ Access: to face and airway ╺ O2 mask ╺ EtCO2 sampling line ╺ Claustrophobia ╺ House keeping
  • 8.
    8 You will missGA ╺ Position ╺ Do fast ╺ Ventilation: ? tight brain ╺ Bleeding ╺ Well sedated? Well… ╺ Extreme head rotation Please don’t post for AC
  • 9.
  • 10.
    Powerless positions ╺ Limitedairway access with the clamp ╺ Fluid management difficult ╺ Management of bleeding difficult ╺ Positioned at foot end and patient is without any airway gadget ╺ Hyperventilation (X) ╺ Certain positions less tolerated
  • 11.
    A hotline isnecessary 11 ╺ LA ╺ Time gap-Mapping/Resection ╺ Dura ╺ Pain ╺ Closure
  • 12.
    You need tobe Dr Strange 12 ╺ Seizures (No airway gadget in place): Rx ice cold saline ╺ Pain (Further narcotics will affect testing): transcortical resection ╺ Loss of airway (Head on clamps): SGA
  • 13.
    Possible costly missesby an occasional practitioner 13 ╺ Missing the C/I eg OSAS, psychological issues ╺ Different preparation of the OT ╺ Subtle points during positioning: eg L clamp ╺ Fine titration and timing of stoppage of the agents ╺ Continuous communication
  • 14.
    Possible costly missesby an occasional practitioner 14 ╺ Selection of the drug ╺ Under dosing ╺ Over dosing ╺ OSAS patient ╺ Opioids ╺ Phenytoin ╺ Antiemetics ╺ Airway loss management ╺ Seizures
  • 15.
  • 16.
    Thanks! Any questions? You canfind me at drunnikrishnanp@gmail.com 16