SEE 4 Flashcards
which 3 drugs cause burst suppression
barbs, etomidate, propofol
A fibers are myelinated/unmyelinated and fast/slow pain?
myelinated, fast. “fast first”
C fibers are myelinated/unmyelinated and fast/slow pain?
unmyelinated slow dull pain
5 factors that alter the latency/amplitude of SSEP
dec cerebral perfusion second to hypotension , dec PaCO2, inc ICP. cerebral hypoxia, hypothermia, hyperthermia, hemodiluation (hct<15%)
acid + acid =
unionized (base)
base + base =
unionized (base)
blood flow highest to lowest - loss of LA d/t vascular reabsorb
In time I can please everyone but susie and sally (IV, tracheal, intercostal, caudal, paracervical, epidural, brachial plexus, spinal, subcutaneous
what are the nerves that flex the forearm
musculocutaneous and radial
what do you see with damage to the radial nerve
inability to ABDUCT thumb, wrist drop
what do you see with damage to median nerve
inability to ADDUCT thumb and ape hand
damage to what nerve = claw hand?
ulnar
which nerve is responsible for flexion at elbow
musculocutaneous
which nerve supplies the anterior thigh and knee
femoral
what does NAVEL stand for
nerve, artery, vein, empty space, lymphatics
which nerve provides sensation to medial aspect of the thigh and motor innervation to the adductor muscles located in the medial thigh
obturator
what is the most commonly injured peripheral nerve
ulnar
extreme flexion at the thigh can result in injury to which 3 nerves
sciatic, obturator, femoral
what is the most common nerve injured lower extremity and how does it manifest
common peroneal - most common injured during lateral position, loss of dorsiflexion of the foot, foot drop, inability to evert foot
lithotomy with strap medially will injure which nerve
saphenous
-will see numbness and tingling along medial aspect of the calves
injury to the ___ nerve = decreased sensation lateral thigh
femoral
high points in spinal canal are at which two spots
C3 L3
low points in spinal canal are at which two spots
T6 S2
how many cm from skin to epidural space?
- up to 8 in obese
2 cutting needles
quinke, pitcin,
3 non cutting
whitacre, spotte, greene
the tip of the 12th rib corresponds with
L1
the origin of the scapular spine corresponds with
T3
tip of the scapula corresponds with
T7
level of the posterior superior iliac spine
S2
SAB spread depends on
dose, positon , baracity
C8-T1 = stellate ganglion - if blocked =
horners
differential blockade progression: TPMSL
temp, proprio, motor, sharp pain, light touch
which type of fiber is more resistant to blockade
C
which fibers are more sensitive
large myelinated
dermatome level needed for TURP
T10
dermatome level needed for ESWL
T4-T6
dermatome level needed for urinary bladder
S2-S4
dermatome level needed for lower abd
T6
dermatome level needed for kidney
T10-L1
dermatome level needed for uterine
T8-T10
dermatome level needed for hip arthroplasty
T10
dermatome level needed for C/s
T4
dermatome level needed for testicles
T10
dermatome level needed for tourniquet
T8
dermatome level needed for upper abd
T4
dermatome level needed for cyst
T8-T10
dermatome level needed for hysteroscopy
T10
how does increased age effect spinal?
dec csf volume, inc height of spinal blockade
which 2 LA’s cause TNS
mepivacaine and lidocaine
