Wheelchairs

Question 1

wheel axel aligned posterior

Answer 1

increases the amount of energy required for propulsion by increasing the rolling resistance; increases the turning radius

Question 2

wheel axis aligned anteriorly

Answer 2

increases ability to perform a ‘wheelie’

Question 3

who would benefit from anti-tippers?

Answer 3

someone with decreased trunk control - prevent tipping and LOB

Question 4

what’s the benefit from pull-to wheel locks with extensions?

Answer 4

they allow a pt to reach them with an uninvolved side

Question 5

who would benefit from elevating leg rests?

Answer 5

dependent edema, redistribute forces

Question 6

when are removable armrests necessary?

Answer 6

for a squat pivot or sliding board transfer, not needed for a stand pivot transfer

Question 7

how often must someone who is dependent be repositioned in bed?

Answer 7

every 2 hours

Question 8

min A %

Answer 8

25% assistance from PT

Question 9

mod A %

Answer 9

50% assistance from PT

Question 10

max A %

Answer 10

75% assistance from PT

Question 11

Measure: seat height

Answer 11

heel to popliteal fold + 2inches (19.5-20.5in)

Question 12

Measure: seat depth

Answer 12

posteior buttock to popliteal fold -2in (16in)

Question 13

seat width

Answer 13

widest aspect of legs +2in (18in)

Question 14

back height

Answer 14

seat of chair to axilla -4in; take into consideration the cushion (18in)

Question 15

armrest height

Answer 15

seat of chair to olecranon process with elbow at 90deg; take into consideration the cushion (9in)

Question 16

when is a hemi frame indicated

Answer 16

so a pt can self propel with BLE

Question 17

what’s the difference about an amputee frame

Answer 17

center of gravity is shifted posteriorly so it doesn’t tip

Question 18

geri chair

Answer 18

push chair - when a pt is dependent for mobility but not safe to operate a manual or power chair

Question 19

reclining vs tilt in space

Answer 19

tilt in space is used when there are issues with sliding or extensor tone

Question 20

planar vs. curved headrest

Answer 20

curved used when lateral support needed; either are used with reclining or tilt in space w/cs

Question 21

planar back vs curved back insert vs custom

Answer 21

back support: mild = planar vs. moderate = curved trunk supported needed; custom = significant trunk support needed via postural concerns

Question 22

low vs high back chair (below vs. above inf angle of scap)

Answer 22

low = good trunk control and can self propel; high = requires some spinal support with self propel OR has poor trunk control for power chair

Question 23

removable seat insert or back insert… why?

Answer 23

so the w/c can fold

Question 24

custom molded seat

Answer 24

for pelvic obliquities, or asymmetry

Question 25

bevel front edge seat

Answer 25

=undercut edge, so pt can self propel with BLE

Question 26

in general: planar vs. curved equipment

Answer 26

planar = mild support needed, curved = significant support needed

Question 27

small handrims

Answer 27

normal - pt does not have hand grip or strength issues

Question 28

large diameter handrims

Answer 28

some weakness in the BUE

Question 29

rim projections for handrims

Answer 29

pt has difficulty gripping

Question 30

covered hand rims

Answer 30

pt requires assistance for adequate grasp, or inc friction

Question 31

one piece footplate

Answer 31

pt needs a supportive surface to maximize stability OR requires additonal lateral foot support

Question 32

in general: custom

Answer 32

custom is for anyone with abnormalities that do not place their joints in midline so they need additional support

Question 33

bariatric w/c

Answer 33

holds between 300-1000lbs

Question 34

standard cushions

Answer 34

lightweight, but high shear force. EX: sunmate, stimulite, t-foam

Question 35

liquid cushions

Answer 35

heavy, good with shear force; jay, flo-fit, avanit, action

Question 36

air cushion

Answer 36

light weight, moderate with shear force, need to be heavily monitored: roho, bye bye decubiti

Question 37

what does a central line measure?

Answer 37

pressure in the R atrium or superior vena cava

Question 38

swan ganz catheter

Answer 38

meausres the pressure of the pulmonary artery - avoid excessive head, neck, or extremity movements with it in place

Question 39

suprapubic vs. foley catheter

Answer 39

foley = into the urinary tract, suprapubic = into the patient's bladder (performed under anesthesia)

Question 40

what is myelography

Answer 40

invasive test that combines fluoroscopy (slow motion of joints) and radiography to look at spinal subarachnoid space - identify bone displacement/disk herniation