Nerve Injuries during Positioning Flashcards
What causes damage to the supraorbital nerve?
compression from a tight facemask
What causes damage to the axillary nerve?
during the prone position:
- when shoulders are extended & arms are placed above the head
What causes damage to the radial nerve?
arm hanging over the table can produce pressure to the posterior cord of the axilla
What causes damage to the median nerve?
direct needle trauma in the antecubital fossa
What causes damage to the ulnar nerve?
lies superficially in groove behind medial epicondyle of the humorous
- internal compression between two heads of the flexor capri ulnaris
- full flexion at the elbow will cause compression where the nerve enters the cubital tunnel
What causes damage to the sciatic nerve?
main source of direct trauma is from misplaced IM injections or pneumatic tourniquets
What causes damage to the femoral nerve?
excessive leg flexion in lithotomy position can cause entrapment
What causes damage to the common peroneal nerve?
compression from the lithotomy pole where the nerve passes around the head of the fibula
frames that support the anterior iliac spines when the patient is prone
What causes damage to the pudendal nerve?
compression against a perineal post used during hip surgery
What causes damage to the saphenous nerve?
compression between the medial tibial condyle & the lithotomy pole (leg lateral to the pole)
The common peroneal nerve is also known as the:
lateral cutaneous nerve of the thigh
What nerve lies in the groove behind the medial epicondyle of the humorous?
ulnar nerve
Photophobia, pain in the eye, & numbness of the forehead is indicative of damage to which nerve?
supraorbital nerve
↓ abduction of the arm & reduced skin sensation over the lateral aspect of the upper arm is indicative of damage to which nerve?
axillary nerve
Hand weakness, tingling & pain is indicative of damage to which nerve?
ulnar nerve
Loss of perineal sensation & fecal incontinence is indicative of damage to which nerve?
pudendal nerve
Loss of hip & knee extension is indicative of damage to which nerve?
femoral nerve
Loss of sensation over the anterior thigh and the anteromedial aspect of the calf is indicative of damage to which nerve?
femoral nerve
Inability to oppose thumb & little fingers is indicative of damage to which nerve?
median nerve
Wrist drop is a sign of damage to which nerve?
radial nerve
Paralysis of all muscles and sensory loss below the knee is indicative of damage to which nerve?
sciatic nerve
Meralgia paresthesia is what?
numbness & hyperalgesia of the upper lateral thigh
Damage to the common peroneal nerve results in what?
meralgia paresthesia, foot drop, & loss of sensation over the lateral aspect of the leg and dorsum of the foot
What nerve produces sensation over the lateral aspect of the leg & dorsum of the foot?
common peroneal nerve [aka: lateral cutaneous nerve of the thigh]
