Bed Mobility, Positioning, and Transfers (Part 1 and 2) Flashcards
what two movements are involved during mobility and transfers?
both therapist and the patient’s body areas
if therapist movement and patient movement are not in sync, what could happen?
injury to therapist or patient
what kinds of things does transferring and mobilizing include?
minimal strain to patient/therapist
creating environment to use patient strength and ability to transfer with therapist help as small as possible
consideration for safety
emphasis on patient education and promoting functional independence
what is the center of mass (COM)?
point along a segment at which the mass of the segment is distributed equally on each side
what happens if the patient is in motion or has additional weight applied to one of the body areas?
the patient’s COM should be reassessed accordingly for safety
if a patient is standing in anatomical position with a right leg cast, which side will the patient COM be altered?
toward right side
if a patient is standing in anatomical position on crutches and has a right leg amputation, which side will the patient COM be altered?
toward left side
what is the definition of force?
mass x acceleration
what is an example of internal force?
muscle force
what is an example of external force?
gravity, additional weight, etc.
when do clinicians apply force?
mobilizing patients in/out bed, wheelchair, etc.
when transferring, what kinds of forces are present?
a combination of linear and angular (circumduction)
what needs to be overcome in order to transfer safe and efficiently?
internal forces and external forces
what MMT grade would a patient have if they are struggling to counteract gravity?
less than 3
the therapist should be aware of the muscle strength in patient’s different body segment in order to determine what two things?
whether they can withstand the pull of gravity or need assistance
whether assistance of one person is enough or if you need a second person to transfer
what is the definition of line of gravity (LOG)?
direction in which the force of gravity acts on body’s COM
what is the line of action?
direction of force exerted from pull/push
when is the force efficiency applied to the line of action the greatest?
when the force is perpendicularly applied
what is the definition of a force couple?
two difference forces that act to move an object around the fulcrum
how can using a force couple improve transfers?
possibility to make the transfer easier such that they require less force by the therapist
if a patient uses incorrect method during sit-to-stand transfer, what can we do to educate them in efficiently using force couples?
if they have LE weakness, they will try to use their arms as a force couple. the therapist do a knee block to stabilize thee patient, the the patient uses their arms to push up = successful sit to stand
what is the base of support (BOS)?
contact area of an object over the surface it is supported on (extremely important for therapist during transfer)
why does BOS matter during transfer?
the wider the BOS, the better the stability one has
if you have a wider BOS during transfer, what does this help ensure?
that the COM remains within BOS to create more efficiency and lesser force required to complete a transfer
what are the benefits to the therapist for maintaining a wider BOS?
less work on muscles of low back
less risk of injury to low back
better ability to maneuver a patient’s body
if you maintain a narrow BOS during transfer, how does your body compensate?
flexing trunk forward = greater chance of injury
if you want your patient to work on stability, what would you want to do to their BOS?
narrow it
when do most patients fall/what causes this?
COM leaves BOS
you have greater mobility when the BOS is _______.
narrower
what position puts the least amount of stress on the clinician’s back during transfer?
pelvic neutral position
what is dynamic trunk stability?
maintaining trunk stability while it is moving through ROM via activation of core muscles of the back
how is dynamic trunk stability best achieved?
pelvic neutral position (lumbo-sacral complex is in neutral)
how can you place yourself in pelvic neutral position?
“activating transversus abdominus immediately prior to mobility task and maintaining contraction throughout mobility” (straight from PPT)
what is controlled mobility?
when LOG moves outside of the BOS, a coordinated action of muscles is required to facilitate this movement without the loss of balance
what are some examples of controlled mobility?
walking, small range body movement in sitting/standing
what is uncontrolled mobility?
if the LOG moves too far beyond the BOS where muscle action cannot control the movement of the body and unable to bring the LOG back within BOS
what is an example of uncontrolled mobility?
falling
what are some principles to keep in mind during transfers?
large BOS for caregiver
patient’s supporting surface (wheelchair) is locked and stable
caregiver is as close as possible to patient so that LOG does not move too far forward (assist in balance maintenance)
securing patient’s body with use of gait belt
when should you perform a knee block?
when the lower extremity is weak and the patient is not able to stand on their own (force coupling is needed)
the knee block creates a “fake extension” moment
in a seated position, what are the anti-gravity muscles of the LE?
quads, glutes, plantarflexors
if anti-gravity muscles are weakened in a seated position, will the patient be able to perform sit to stand?
highly unlikely because they cannot counter the force of gravity
what is an option to use when a patient’s anti-gravity muscles are weak in a seated position?
excessive UE force of patient (traps and lat dorsi, extensors)
when you are blocking the knees, where should you apply the force?
perpendicularly to the anterior surface of knee joint (not lateral or to the sides)
what are some examples of good clinician body mechanics during transfers?
maintaining erect posture
head up
wide/diagonal BOS
use large muscle groups
work within your ability
give good verbal command
what all should you test during upper extremity exam?
shoulder elevation
shoulder flexion/extension (if you can)
shoulder abduction/adduction
wrist flexion/extension
finger dexterity/grip strength
what are the goals of positioning a patient?
comfort
prevent skin breakdown
prevent deformity
prevent pressure of peripheral nerves
maintain cardiovascular/pulmonary integrity
provide access to environment
used for specific interventions
in terms of positioning - what is the biggest thing we are trying to prevent in patients that have been bed-ridden for long periods of time?
skin breakdown
what kind of deformities are we trying to prevent with patient positioning?
relaxed foot position is plantar flexed and IR - if here for long periods of time, this can cause toe walking once mobile again
what position is best for patients with limited cardiopulm function?
prone (gives increased chest expansion and promotes diaphragm function)
what are the benefits of bridging?
relieves pressure with pillow or roll above/below area of concern
allows skin to breathe
decreases humidity to reduce breakdown
why would you not want to place a pillow under a patient’s knee replacement?
promotes knee contractures
what are risk areas for pressure ulcers in supine?
occiput of skull
scapula (especially inferior angles)
medial epicondyles of humerus
ischial tuberosity/sacrum
heels (maybe lateral malleolus if ER)