positioning/nerve injury Flashcards Preview

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Flashcards in positioning/nerve injury Deck (41)
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1

Supine effects:
circulation

minimal

2

Supine effects:
Pulmonary

decreased FRC (800cc)
cephalad displacement of diaphragm to compress the lung bases

3

Supine effects:
what should u do to facilitate Venous return

flex hips and knees to facilitate venous drainage from lower extremities

4

Supine effects:
what do u wanna make sure you pad

occiput
heels

5

Trendelenburg Effects:
Circulation

decreased SV- hypotension maybe ( and viscera pushes against the diaphragm, which compresses lung bases and pushes on heart to decrease SV)

6

Trendelenburg Effects:
Pulmonary

lung bases compresed

7

Trendelenburg Effects:
what will happen to venous return

increase (but may not help the decrease in BP)

8

Trendelenburg Effects:
what could it do to ICP

increase it

9

Trendelenburg Effects:
what type of pets would you use this position with caution (not head puts think general population)

obese

10

Prone effects:
circulation- what can become compressed

inferior venacava
Aorta

11

Prone effects:
Pulmonary- what happens to lung bases

forced cephalad

12

Prone effects:
what could hinder venous return

vascular compression

13

Prone effects:
turning head in prone may obstruct drainage of what?

Jugular veins
vertebral artery

14

Prone effects:
placement of what under the pts sides receive abdominal compression and increases venous return to the heart, and eases ventilation

abdominal rolls (chest rolls)

15

Lateral Decubitus (on Ventilator) effects:
increased circulation goes to what lung?

dependent lung

16

Lateral Decubitus (on Ventilator) effects:
there may be decreased blood to the kidney if what is being used

kidney rest

17

Lateral Decubitus (on Ventilator) effects:
there will be decreased ventilation to what lung?

dependent

18

Lateral Decubitus (on Ventilator) effects:
there will be increased ventilation to what lung

non dependent lung

19

Lateral Decubitus (on Ventilator) effects:
should there be a problem with venous return

no

20

Lateral Decubitus (on Ventilator) effects:
what should be in place and where on all pt's in lateral decubitus

axillary rolls
placed under thorax just caudal to axilla

21

Sitting effects:
there is an increase in drainage from where?

head/ neck/ and upper body

22

Sitting effects:
what happens to intrathoracic blood volume

decreases

23

Sitting effects:
what changes occur to the pulmonary system?

none

24

Sitting effects:
what can u do to increase venous return form the lower extremities?

use compression stockings

25

Sitting effects:
with the decreased venous return what happens to cerebral perfusion pressure?

decreases

26

Sitting effects:
with decreased Venous return what happened to cardiac output

decreases

27

Sitting effects:
what is a hazard/potential complication from this position?

air embolism

28

Lithotomy effects:
any problems with circulation

no

29

Lithotomy effects:
what happens to the lung bases?

d/t cephalad displacement of lungs the bases are compressed

30

Lithotomy effects:
how should the legs be raised and lowered

together

31

Lithotomy effects:
what is a common compliction

nerve injury

32

Lithotomy effects:
what nerves are injured

sciatic
Common peroneal
femoral
saphenous
obturator

33

what is the most common postop peripheral neuropathy

ulnar nerve injury

34

what is the 2nd most common postop peripheral neuropathy

Brachial plexus

35

what causes the ulnar injury

compression of medial epicondyle of humorous and sharp edge of OR table

36

the ulnar nerve is stretched when the hand is in what position

pronated

37

what causes the brachial plexus injury

stretch injury when neck is extended and the head is turned away or the arm is abducted to greater than 90 degrees

38

s/s of median nerve injury

"ape hand"
unable to oppose thumb

39

S/S of ulnar nerve injury

"claw hand" deformity

40

S/S of radial nerve injury

wrist drop

41

what is the most frequently injured nerve in the lower extremity

common peroneal n.

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