Anatomy of Anaesthesia Flashcards
what is the area called above and below levator ani?
above - pelvis
below - perineum
where is pain from the pelvic organs touching peritoneum felt?
suprapubic
what do visceral afferents from the pelvic organs touching peritoneum run alongside? where do they enter the spinal cord?
sympathetic fibres
T11-L2
what level do visceral afferents organs not touching the peritoneum enter the spinal cord?
S2, S3, S4
parasymp
what do visceral afferents from pelvic organs not touching the peritoneum run alongside?
parasympathetic fibres
where is pain percieved from pelvic organs not touching the peritoenum?
S2, S3, S4 dermatome (perineum)
what named nerve supplies the perineum?
pudendal (S2, 3, 4 keeps shit off the floor)
what 3 types of anaesthesia can be given during labour?
spinal anaesthesia
epidural anaesthesia
pudendal nerve block
what level does the spinal cord become cauda equina?
L2 vertebra
what level does the subarachnoid space end?
S2
what spinous process is in line with the most superior point of the iliac crests?
L4
for an spinal/epidural, what level is anaesthetic injected into?
L3-L4 (L5) region
in spinal anaesthetic, what does the needle pass through?
supraspinous ligament
interspinous ligament
ligamentum flavum
epidural space
dura mater
arachnoid mater
subarachnoid space
in an epidural, what does the needle pass through?
supraspinous ligament
interspinous ligament
ligamentum flavum
epidural space
what level do sympathetic nerves leave the spinal cord?
T1 - L2
