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