Set 1 Flashcards
Lumbar puncture at L4/L5 level. What is posterior to the arachnoid space, and why it was dangerous to do an LP at this level?
Cauda Equina
What is a lumbar puncture?
needle enters the subarachnoid space to extract cerebrospinal fluid (spinal tap) or to inject anesthetic (spinal block) or contrast material.
At what level is a lumbar puncture performed?
needle is usually inserted between L3/L4 or L4/L5
Level of horizontal line through upper points
of iliac crests
Where does the spinal cord end in adults?
as low as L2
Where does the spinal cord end in young children?
L3
What should you check for before administering lumbar puncture?
signs of increased intracranial pressure
cerebellar tonsils may herniate through foramen magnum
Where do herniated disks usually occur?
L4/L5
C5/C6
C6/C7
People younger than 50 years of age
Herniated Lumbar nerves involve which root?
One number below
What is kyphosis?
Exaggeration of thoracic curvature that may happen in elderly person due to osteoporosis
What is damaged in a fracture of the surgical neck of the humerus?
Axillary nerve and posterior humeral circumflex artery
What is damaged in a midshaft humerus fracture?
Radial nerve and profunda
brachii artery
What is damaged in a fracture of the medial epicondyle of the humerus?
ulnar nerve
What is a Colles Fracture?
- distal radius fracture
- results from forced extension of hand, usually when trying to break fall
What muscles are the rotator cuffs?
Supraspinatus, Infraspinatus, Teres minor, Subscapularis:
SITS.
Upper Extremity abduction is initiated by which muscle and nerve (0 - 15 degrees)
supraspinatus muscle and suprascapular nerve
