- What is the COTA's MOST important and immediate action?
Answer: Document the finding and inform the supervising OTR immediately of the change in skin integrity.
The correct answer is C. The presence of non-blanchable erythema indicates a Stage 1 pressure injury. This is a significant change in the client's condition that requires immediate reporting to the supervising OTR. The OTR must be involved to re-evaluate the intervention plan, seating system, and client education. A and B are potential interventions, but they should only be implemented after collaborating with the OTR. D is outside the COTA's scope of practice.
- To correctly implement the positioning plan, the COTA should ensure the lateral supports are placed:
Answer: at the side of the thorax, clear of the axilla, to provide support without interfering with arm function.
The correct answer is B. Lateral trunk supports should be positioned on the lateral aspect of the thorax to provide stability and prevent leaning. They must be placed inferior to the axilla to avoid impinging on the brachial plexus or restricting arm movement. A is incorrect because placement in the axilla is dangerous and can cause nerve damage. C describes the function of pelvic guides, not trunk supports. D is incorrect as the supports should be snug to provide effective support, not loose.
- Which strategy is MOST effective for the COTA to teach the client for independently managing this type of door?
Answer: Approach the door at an angle, turn sideways, pull the door open, and propel through the opening while holding it.
The correct answer is C. For a door that pulls open, approaching sideways allows the user to get close to the handle, pull the door open, and then use their other hand or body to hold the door while propelling through the opening. This is a standard, effective technique for independent mobility. A is incorrect as it describes a technique for a door that pushes open. B is awkward and inefficient. D promotes dependence and is contrary to the goal of independent community mobility training.
- The COTA should explain that the PRIMARY purpose of the pommel is to:
Answer: maintain hip abduction and prevent the knees from moving together.
The correct answer is C. A pommel is a positioning device designed to act as a medial knee separator. Its primary function is to maintain the hips in a state of abduction and prevent adduction or a 'scissoring' posture of the lower extremities. A is the function of a wedge cushion or proper seat depth. B is influenced by the overall seating system, not just the pommel. D is an unsafe and incorrect use of a positioning device.
- After ensuring the client is in a safe location, what is the COTA's MOST appropriate next action?
Answer: Inform the supervising OTR of the malfunction and recommend that the DME supplier be contacted for repair.
The correct answer is B. An intermittent power failure is a significant safety concern that could strand the client or cause an accident. The COTA's responsibility is to immediately report this equipment malfunction to the OTR. They should also recommend contacting the durable medical equipment (DME) supplier, who is responsible for servicing the chair. A is incorrect as it involves complex repairs outside the COTA's scope. C is unsafe advice. D is incorrect because this issue requires immediate attention, not a delayed discussion.
- In addition to its superior pressure redistribution properties, the COTA should inform the client that the air cushion might also result in:
Answer: a less stable seating surface.
The correct answer is A. While air-cell cushions (like ROHO) are excellent for pressure redistribution, they provide less stability than foam cushions because the user is sitting on a surface of shifting air. This can make transfers more difficult and may be challenging for clients with poor trunk control. B is incorrect as foam provides more insulation. C is incorrect as air cushions require regular monitoring of inflation levels. D is incorrect; clients must still perform regular pressure reliefs regardless of cushion type.
- What is the COTA's MOST appropriate initial action?
Answer: Document the observation and report it to the supervising OTR.
The correct answer is C. The COTA's primary role in this situation is to gather data and report changes in the client's condition or equipment needs to the supervising OTR. Sacral sitting can lead to skin breakdown and indicates a potential problem with seating system fit or client positioning that requires re-evaluation by the OTR. A is incorrect because ordering new equipment is outside the COTA's scope. B is a temporary solution that does not address the underlying cause. D could potentially worsen the problem and constitutes a modification that should first be discussed with the OTR.
- What is the MOST effective initial instruction for the COTA to provide to the client for performing pressure relief?
Answer: Perform a full depression weight shift, lifting the buttocks off the cushion, for 30-60 seconds every 30 minutes.
The correct answer is B. The standard recommendation for effective pressure relief is to completely offload the ischial tuberosities for 30-60 seconds at least every 30 minutes. A full depression weight shift achieves this. A is incorrect because the frequency is too low. C is incorrect as it is outside the COTA's scope to recommend a completely different mobility system; this would be a collaborative decision with the OTR after other options are trialed. D is a monitoring strategy, not an active pressure relief technique, and the frequency is insufficient.
- What is the COTA's MOST appropriate response?
Answer: "That's a good question. It's something you should discuss with the OTR, who can help determine the best mobility options for you."
The correct answer is C. The COTA's role is to implement interventions, not to assess for, recommend, or prescribe specific assistive technology. When a client raises a question about new or different equipment, the COTA's responsibility is to facilitate communication with the supervising OTR, who can then perform the necessary evaluation. A and B are incorrect because they involve making a specific recommendation, which is outside the COTA's scope. D is dismissive of the client's perceived needs and goals.
- To improve the client's control for maneuvering in tight spaces, which adjustment should the COTA make to the joystick settings?
Answer: Decrease the sensitivity of the joystick.
The correct answer is B. Decreasing the joystick's sensitivity (sometimes called 'throw' or 'gain') will reduce the wheelchair's response to the client's small, erratic movements, making it easier to control and perform fine-tuned maneuvers. A would make control more difficult. C is appropriate for clients with tremors, but the scenario describes oversteering, which is a control issue, not necessarily a tremor issue. D is a significant change that should only be considered after other strategies have failed and in collaboration with the OTR.
- What is the MOST critical safety instruction the COTA must convey about securing the client and the wheelchair?
Answer: The wheelchair must be secured to the vehicle with a four-point tie-down system, and the client must be secured with the vehicle's seatbelt.
The correct answer is C. This is the standard of practice for safe wheelchair transportation (WC19 standard). The wheelchair itself must be secured by a four-point tie-down system to anchor points in the vehicle floor. The occupant must be restrained by the vehicle's installed seatbelt system (both lap and shoulder belt), not the wheelchair's positioning belt, which is not designed to withstand crash forces. A is incorrect and dangerous. B is incorrect; wheelchairs must be secured facing forward. D is incorrect and extremely dangerous, as brakes will not hold in a collision.
- When the COTA elevates the client's legs using the leg rests, what compensatory adjustment may be needed to ensure client stability and prevent sacral sitting?
Answer: Slightly reclining the wheelchair backrest.
The correct answer is A. Elevating the legs shifts the client's center of gravity backward and can increase posterior pelvic tilt, leading to sacral sitting or even tipping the chair backward. Slightly reclining the backrest helps to open the hip angle and redistribute weight, maintaining postural stability. B, C, and D do not address the change in the center of gravity caused by elevating the legs.
- What is the MOST critical instruction regarding the setup of the wheelchair for a safe transfer?
Answer: Ensure both wheelchair brakes are locked and the footrests are swung away or removed.
The correct answer is B. Securing the wheelchair by locking the brakes is the first and most critical step to prevent it from moving during the transfer. Clearing the area for the feet by swinging away or removing the footrests is essential to prevent trips and allow for proper foot placement. A is incorrect because the wheelchair should be positioned on the client's unaffected (left) side. C is incorrect because the armrest is typically removed to allow for a smoother lateral transfer. D is incorrect as the client's feet must be firmly on the floor before initiating the stand.
- What is the MOST important safety instruction the COTA should provide for this activity?
Answer: Wait for the pedestrian 'Walk' signal and visually scan for turning vehicles before proceeding.
The correct answer is C. Safe street crossing involves multiple steps. The client must wait for the proper pedestrian signal, but also engage in defensive driving by actively looking for potential hazards, such as cars turning right on red or left into the crosswalk. This is the most comprehensive safety practice. A is unsafe as it reduces reaction time. B is incorrect as the client should follow pedestrian signals, not traffic signals. D can be dangerous as it reduces the client's visibility and independent judgment.
- When educating the client on the primary therapeutic benefit of the tilt-in-space feature, the COTA should explain that it:
Answer: redistributes pressure away from the seating surface while maintaining the client's posture.
The correct answer is C. The main purpose of a tilt-in-space feature is to provide pressure relief by shifting the client's weight from the buttocks and posterior thighs to the posterior trunk and head. It does this while maintaining the angles of the hips, knees, and ankles, thus preserving the client's established postural alignment. A describes a benefit of a recline feature, not tilt. B is incorrect as the tilted position makes transfers impossible. D is incorrect as the tilt feature is unrelated to vehicle transport safety standards.
- What is the MOST effective propulsion technique for the COTA to teach this client for navigating this type of soft, uneven terrain?
Answer: Perform a 'wheelie' to lift the front casters off the ground while propelling with the rear wheels.
The correct answer is C. For a skilled and active wheelchair user, performing a 'wheelie' (balancing on the rear wheels) is the most effective technique for crossing soft terrain like grass or gravel. This lifts the small front casters, which would otherwise dig into the ground and stop the chair's momentum. A is ineffective as the casters will get stuck. B is a possible but less efficient strategy. D promotes dependence, which is counter to the goal of training for independent mobility.
- This observation most likely indicates an issue with which aspect of the wheelchair's dimensions?
Answer: The seat depth is too long.
The correct answer is C. Proper seat depth is measured from the back of the pelvis to the popliteal fossa, minus 1-2 inches. If the seat is too deep, its front edge will press against the sensitive popliteal area, potentially restricting circulation and causing skin breakdown. A would cause pressure on the lateral hips. B would not provide adequate trunk support. D would cause the client's feet to dangle and increase pressure on the posterior thighs.
- Which technique is BEST for the COTA to teach the client to improve efficiency and safety while ascending the ramp?
Answer: Push forward using long, smooth strokes while leaning the trunk slightly forward.
The correct answer is A. Using long, smooth strokes is the most biomechanically efficient method for wheelchair propulsion, reducing fatigue and risk of repetitive strain injury. Leaning the trunk forward shifts the center of gravity, which improves stability and makes propulsion up an incline easier. B is incorrect because short, rapid pushes are inefficient and lead to quicker fatigue. C is a technique sometimes used for very steep inclines or descending, but it is not the primary technique for ascending a standard ramp. D is unsafe and can lead to a loss of control.
- Which basic maintenance task is MOST appropriate for the COTA to teach the client and family to perform regularly?
Answer: Checking tire pressure and cleaning the frame.
The correct answer is C. Checking tire pressure is a simple but critical task that ensures the wheelchair rolls efficiently and safely. Keeping the frame clean helps with inspection for cracks or damage. These tasks do not require specialized tools or skills. A, B, and D are more complex repairs that should be performed by a qualified durable medical equipment (DME) technician.
- What should the COTA instruct the client to do with their right hand to execute a left turn?
Answer: Push forward on the outer (larger diameter) handrim.
The correct answer is D. On a one-arm drive wheelchair, two handrims on one side control both wheels. Pushing both forward propels the chair straight. To turn, the client must engage the wheel on the opposite side. Pushing the outer handrim engages the left wheel, causing the chair to turn left. A would move the chair straight ahead. B would engage the right wheel, causing a right turn. C would cause the chair to turn right while moving backward.
