Regional- Spinal (subarachnoid) Neural Blockade Flashcards
The principle site of action for neuraxial blockade, spinal or epidural is where?
the nerve root
what ligament binds the epidural space posteriorly
ligamentum Flavum
where is the spinal cord the widest
L2
Where is the spinal cord the narrowest
C5
what are the layers of the spinal meninges form outer to inner?
Dura matter
Arachnoid matter
Pia Matter
what is the specific gravity of CSF
1.004 - 1.009
think of james bond 007 (and your in the middle)
if the sympathetic outflow from T1- T4 is blocked by LA, unapposed vagus stimulation will produce what? and what is this reflex termed?
bradycardia
Bainbridge reflex
Anterior dermatome: name landmark
C4
Clavicle
Anterior dermatome: name landmark
T4-T5
Nipples
Anterior dermatome: name landmark
T6
Xiphoid
Anterior dermatome: name landmark
T8
lower border of rib cage
Anterior dermatome: name landmark
T10
umbilicus
Anterior dermatome: name landmark
L1
inguinal ligament
Anterior dermatome: name landmark
L2-L3
Knee and below
Anterior dermatome: name landmark
S2-S3
Perineal
Posterior dermatome: name landmark
C7
Most prominent cervical spinous process
Posterior dermatome: name landmark
T7
inferior boarder of scapula (lower tip)
Posterior dermatome: name landmark
L4
iliac creast (superior) tuftier's line or intercristal line
Posterior dermatome: name landmark
S2
Posterior superior iliac spine
name all the structures the needle passes through for a Subarachnoid block (midline) from posterior to interior
Skin subcutaneous tissue SupraSpinous Ligament Intraspinous ligament Ligamentum Flavum (epidural space)- not a real space Dura matter arachnoid matter
the lateral approach for a SA block will not pass through what 2 structures just listed for the midline approach?
Supraspinous ligament
intraspinous ligament
memory master
IA3; IIIH1-2
