Operative Positioning

Question 0

Brachial Plexus injury will occur in supine position d/t:
__________ extension
abduction > _________ degrees

Answer 0

neck

90

Question 1

The typical OR table has a weight limit of ________ and is _____ inches long.r

Answer 1

300lb

80.7

Question 2

Injury of the radial nerve in supine position is from __________ compression of the radial nerve on the lateral aspect of the ___________.

Answer 2

external

humerus

Question 3

Injury of the radial nerve results in _________ / weakness in abduction of the ___________, inability to __________ elbow. Numbness in dorsum of 1,2, and .5 of ring finger

Answer 3

wrist drop
thumb
extend

Question 4

The most common postoperative peripheral nerve injury = ___________.
It gets compressed bt the __________ of the ulna and the medial __________ of the humerus with arm extension or severe flexion

Answer 4

Ulnar Nerve
olecranon
epicondyle

Question 5

Ulnar nerve injury results in ___________. This gives inability to abduct or oppose the ________ finger. You will lose sensation of the ______ surface of the _________ fingers.

Answer 5

Claw hand
5th
palmar
4th and 5th

Question 6

In the supine position you MAY have decrease venous return d/t ___________

Answer 6

IVC compression d/t masses/ pregnancy

Question 7

In the Supine position, FRC decreases about _______ ml.

Answer 7

800

Question 8

__________ position is used to treat hypotension by increasing venous return. It also helps prevent _________

Answer 8

Trendelenberg

air embolism

Question 9

When using shoulder braces, they must be ________ over the ___________ joint

Answer 9

lateral

arcomioclavicular joint

Question 10

Trendelenberg will increase venous return to the heart by about ___ L.

Answer 10

1

Question 11

Reverse trendelenberg can cause injury to the ________ nerve which can cause foot drop

Answer 11

Anterior tibial

Question 12

In the lithotomy position, hips are flexed ____-____ degrees and legs are abducted _____-_____ degrees from midline.

Answer 12

80 - 100

30 - 45

Question 13

With candy cane stirrups the biggest nerve injury is to the ____________ nerve.

Answer 13

Common Peroneal N (lateral side of calf resting against bar)

Question 14

With the Knee Crutch style of stirrups, watch for injury to the __________ Nerve

Answer 14

Popliteal ( Tibial and common peroneal N)

Question 15

The most common LE nerve injury d/t the lithotomy position is the:____________

Answer 15

Common Peroneal N

Question 16

The LITHOTOMY position is most commonly used for ________, ________, and ________ procedures. Do not flex hips beyond ______ degrees.

Answer 16

GU, GYN, Rectal

110

Question 17

The common peroneal N is a branch of the ___________. S/S of injury is ___________ which causes loss of dorsal extension of the toes.

Answer 17

Sciatic

Foot Drop

Question 18

Excessive external rotation of the hips can cause injury to the _________ N. S/S are weakness or paralysis of muscles _______ the knee, numbness of the _______ and lateral half of the ________. _________ can also occur.

Answer 18

Sciatic
below
foot
calf
foot drop

Question 19

__________ N injury occurs with compression at pelvic brim by retractor/ excessive angulation of thigh. It results in loss of _________ flexion and loss of extension of __________ and decreased sensation over __________ aspect of the thigh.

Answer 19

Femoral
hip
knee
superior aspect

Question 20

_____________ N injury occurs when the medial aspect of the LE is compressed against support bar. Results in paresthesia of medial side of calf

Answer 20

Saphenous

Question 21

LE compartment syndrome results when decreased perfusion leads to ___________ and occur in surgical procedures > ____-_____ hrs in the positions of _______ or _______

Answer 21

rhabdomyolysis
2-3
lithotomy
lateral decubitus

Question 22

In the lithotomy position, perfusion to the LE is __________. Perfusion pressure changes ___mmHg for each ____cm that a given point varies in vertical height above or below the reference point (HEART).

Answer 22

reduced
2
2.5

Question 23

One eye injury in the prone position that causes blindness is __________________ which is caused by central vein or artery obstruction via sustained ____________. It is most common in _________ or _________ surgeries.

Answer 23

Ischemic Optic Neuropathy
Pressure
cardiac or spine

Question 24

In the prone position, check for ______________ syndrome preop.

Answer 24

Thoracic Outlet Syndrome

Question 25

CV changes in the prone position are:
hypotension d/t ________________________, and
______________ in the LE’s.

Answer 25

IVC and aortic compression

venous pooling

Question 26

In the prone position…. The V:Q mismatch will be _______ ventilation> perfusion and _________ perfusion > ventilation.

Answer 26

posterior

anterior

Question 27

The lateral decubitus position is used for ________, __________, ________, or ________ surgeries. It require a _______ roll to be placed ______ to and outside of lower axilla.

Answer 27

hip, kidney, thoracotomy, shoulder
axillary
caudad

Question 28

LATERAL POSITION:

In the awake and spontaneously breathing pt the ________ lung is better perfused and ventilated

Answer 28

dependent

Question 29

LATERAL POSITION:
In the anesthetized but spontaneously breathing pt… the ________lung is better ventilated and the ____________ lung is better perfused.

Answer 29

nondependent

dependent

Question 30

LATERAL POSITION:

In the anesthetized, vented pt…. the __________ lung is over-ventilated and the _______ lung is overperfused.

Answer 30

nondependent

dependent

Question 31

In the sitting position you want atleast _____ finger-breaths bt the mandible and the sternum

Answer 31

2

Question 32

Anytime the surgical site is above the level of the heart pt is at risk for ______________. This is the inability of ______________ to collapse. First s/s you’ll see is a _____________. You will hear a murmur called ___________.

Answer 32

VAE - venous air emobolus
venous sinus
decreased end tidal co2
wind mill

Question 33

Tx of a VAE include: flood surgical field with ________, D/C __________, Place on _________, Place in __________ position, and ________ air from RA

Answer 33

NS
Nitrous
100% fio2
aspirate via catheter