All questions
Question 1
When transferring a patient with a recent total hip replacement from a wheelchair to the radiographic table, which combination of precautions and techniques is most critical to prevent hip dislocation?
- Maintain hip flexion less than 90 degrees, avoid internal rotation and adduction past midline, use slide board transfer technique with assistance (correct answer)
- Keep the hip in maximum extension throughout transfer, prevent external rotation, use pivot transfer technique while bearing weight on the operative leg
- Allow hip flexion up to 120 degrees for comfort, maintain neutral rotation, use mechanical lift to avoid any weight bearing on either leg
- Position hip in slight flexion with internal rotation for stability, avoid abduction, use stand-pivot transfer with full weight bearing on the non-operative leg
Explanation: Total hip replacement patients require specific precautions: hip flexion less than 90 degrees, no internal rotation, no adduction past midline, and controlled transfer techniques. Slide board transfers minimize these risk movements while providing support. Choice B incorrectly allows weight bearing on the operative leg and prevents external rotation. Choice C allows excessive flexion. Choice D promotes internal rotation and weight bearing that could cause dislocation.
Question 2
A radiographer needs to assist a patient who weighs 160 pounds and has weakness on the left side following a stroke. The patient can partially bear weight but has poor balance. Which transfer technique from wheelchair to radiographic table provides optimal safety?
- Independent transfer with radiographer providing standby assistance only, allowing patient to use their strong side to pull themselves across
- Two-person lift transfer with one person supporting under each arm while the patient remains seated throughout the transfer
- Slide board transfer with the patient remaining seated while sliding across the board with minimal weight bearing required
- Stand-pivot transfer with radiographer supporting the patient's weak side while patient bears weight primarily on the strong right leg (correct answer)
Explanation: When evaluating patient transfer techniques, you must consider three key factors: the patient's physical capabilities, weight-bearing capacity, and safety requirements. This patient can partially bear weight but has left-side weakness and poor balance, which creates specific transfer needs.
The stand-pivot transfer (D) is optimal because it utilizes the patient's existing abilities while providing appropriate support. By supporting the weak left side, you allow the patient to bear weight on their functional right leg, which maintains their dignity and uses their residual strength. This technique also keeps the patient upright and engaged in the transfer process, which is safer than alternatives that eliminate all patient participation.
Option A is unsafe because standby assistance alone cannot adequately protect a patient with poor balance and significant weakness. Even with partial weight-bearing ability, this patient needs active physical support during the transfer.
Option B, the two-person lift with the patient remaining seated, is inappropriate because it doesn't utilize the patient's ability to bear weight and may actually be more difficult to control, especially when transitioning from wheelchair height to table height.
Option C, the slide board transfer, seems logical but requires good upper body strength and coordination on both sides. With left-side weakness, this patient likely cannot effectively use a slide board, and poor balance makes this technique risky.
Remember: match the transfer technique to the patient's specific functional abilities. Use their strengths while compensating for their deficits, and always provide support on the affected side while allowing them to use their strong side effectively.
Question 3
A radiographer is preparing to transfer a patient with severe osteoporosis and recent compression fractures from a stretcher to the radiographic table using a draw sheet. Which modification to standard transfer technique is most important for this patient population?
- Use faster transfer speed to minimize time in vulnerable positions and reduce the risk of additional fractures during prolonged movement
- Apply firmer grip pressure on the draw sheet to ensure secure control and prevent any slipping that might cause sudden jarring movements
- Minimize lifting height and use slow, controlled movements with additional personnel to distribute forces and reduce mechanical stress on bones (correct answer)
- Position the patient in maximum flexion during transfer to protect the spine and reduce the risk of extending existing compression fractures
Explanation: Patients with severe osteoporosis and compression fractures require gentle handling with minimal lifting forces and slow, controlled movements to prevent additional fractures. Additional personnel helps distribute forces safely. Choice A's speed could cause jarring movements leading to fractures. Choice B's firm pressure could create pressure points and potential fractures. Choice D's flexion positioning could worsen compression fractures.
Question 4
When using a transfer board to move a 175-pound paraplegic patient from wheelchair to radiographic table, the patient indicates they prefer to maintain independence in the transfer. How should the radiographer balance patient autonomy with safety requirements?
- Allow complete independence as requested while standing nearby ready to assist only if the patient specifically asks for help during the transfer
- Respect patient preference but maintain hands-on spotting position throughout the transfer while allowing patient to control the movement pace and technique (correct answer)
- Explain safety requirements and insist on hands-on assistance regardless of patient preference due to liability concerns and departmental policies
- Compromise by providing verbal coaching and positioning assistance with the transfer board while allowing patient to perform the actual sliding movement independently
Explanation: Paraplegic patients often have excellent transfer skills and autonomy should be respected, but safety requires hands-on spotting position to prevent falls while allowing patient control. This balances independence with safety requirements. Choice A provides insufficient safety backup for potential complications. Choice C unnecessarily overrides patient autonomy when they have transfer skills. Choice D may not provide adequate safety support if the patient loses balance during transfer.
Question 5
During a fluoroscopic procedure, a 190-pound patient on the table becomes nauseated and begins to vomit while lying supine. The radiographer must quickly reposition the patient to prevent aspiration. What combination of actions prioritizes airway safety while maintaining proper body mechanics?
- Immediately turn patient's head to the side, then use log-roll technique to turn entire body to lateral position while maintaining spinal alignment
- Quickly lift the patient's torso to sitting position using back muscles for speed, then support patient in upright position until vomiting subsides
- Turn patient's head to side first, call for assistance, then use proper body mechanics to log-roll patient to lateral position with help (correct answer)
- Place patient in Trendelenburg position to use gravity for drainage, then turn head to dependent side while maintaining supine body position
Explanation: Airway protection requires immediately turning the head to prevent aspiration, calling for help for safe repositioning, then using proper log-roll technique to lateral position. This sequence prioritizes immediate airway safety while ensuring safe patient handling. Choice A attempts solo repositioning of a heavy patient. Choice B uses poor body mechanics and may not provide optimal airway protection. Choice D's Trendelenburg position could worsen aspiration risk by causing vomit to flow toward the airway.
Question 6
While positioning a 200-pound unconscious patient for a lateral cervical spine examination, the radiographer notices the patient beginning to slide toward the edge of the table. What sequence of actions demonstrates proper safety priorities and body mechanics?
- Immediately grab the patient's arm to prevent falling, then call for assistance to help reposition the patient back to center of table
- Quickly push the patient back toward center of table using upper body strength, then secure with positioning aids before continuing the examination
- Call for immediate assistance while maintaining contact with the patient, use proper lifting mechanics with help to reposition, then secure with appropriate restraints (correct answer)
- Lower the table height first, then single-handedly reposition the patient using leg muscles and wide base of support before raising table again
Explanation: Patient safety requires immediate assistance for repositioning a heavy unconscious patient while maintaining contact to prevent falls. Proper lifting mechanics with multiple people prevents injury to both patient and healthcare workers. Securing with restraints prevents recurrence. Choice A uses improper grabbing technique that could cause injury. Choice B attempts single-handed repositioning of a heavy patient using poor body mechanics. Choice D attempts solo repositioning which is unsafe for a 200-pound unconscious patient.
Question 7
A radiographer is using a mechanical lift to transfer a 280-pound bariatric patient with limited mobility from wheelchair to radiographic table. The patient becomes anxious and begins to resist during the transfer. What is the most appropriate immediate response?
- Continue the transfer quickly to minimize patient distress while reassuring the patient verbally throughout the remaining procedure
- Stop the lift immediately, lower the patient back to the wheelchair, address their concerns, and obtain additional assistance if needed before reattempting (correct answer)
- Pause the lift in mid-transfer, calm the patient while suspended in the lift, then continue once the patient appears more comfortable
- Complete the transfer to the table rapidly, then address the patient's concerns while positioning them for the examination to avoid repeated transfers
Explanation: Patient safety requires immediately stopping the transfer when a patient becomes resistant or anxious, returning them to a safe position (wheelchair), addressing their concerns, and potentially obtaining additional help before reattempting. This prevents injury from patient movement during transfer and maintains trust. Choice A risks injury by continuing against resistance. Choice C leaves the patient in an unsafe suspended position. Choice D prioritizes procedure efficiency over patient safety and comfort.
Question 8
A radiographer is preparing to transfer a 180-pound unconscious patient from a stretcher to the radiographic table using a 4-person lift technique. The patient has bilateral lower extremity fractures and requires spinal precautions. Which combination of positioning and team coordination represents the safest approach?
- Team leader at the head maintains cervical spine alignment while three assistants lift torso, pelvis, and legs simultaneously on a count of three (correct answer)
- Two people lift the torso while two others support the fractured legs, with the team leader calling out commands from beside the table
- Team leader at the head controls cervical spine while one person supports torso, one supports pelvis, and one supports both legs with a pillow between them
- All four team members position along the patient's side with equal spacing, lifting together while maintaining neutral spine alignment throughout the transfer
Explanation: For an unconscious patient with spinal precautions and bilateral lower extremity fractures, the team leader must maintain cervical spine control at the head while three assistants provide coordinated lifting support. This ensures spinal alignment is maintained while providing adequate support for the fractured extremities. Choice B fails to provide adequate cervical spine control. Choice C doesn't provide sufficient support for bilateral leg fractures. Choice D lacks designated cervical spine control and proper fracture support.
Question 9
A radiographer must position a 240-pound patient with bilateral arm casts for a chest examination. The patient cannot assist with positioning due to the casts. Which approach best combines safe patient handling with accommodation for the patient's limitations?
- Use mechanical lift for all positioning changes and pad the casts thoroughly to prevent pressure points during examination
- Obtain additional personnel assistance, use the patient's torso for repositioning leverage, and support the casted arms separately during movement (correct answer)
- Position the patient once and complete all necessary projections without repositioning to minimize handling of the casted extremities
- Have the patient use their casted arms for limited assistance while radiographer provides primary support using proper body mechanics
Explanation: Heavy patients with bilateral arm casts require additional personnel for safe handling, using the torso for leverage since arms cannot assist, while separately supporting the casted extremities to prevent injury. Choice A may be unnecessarily restrictive for patient positioning needs. Choice C may compromise image quality by limiting necessary projections. Choice D asks the patient to use casted arms which could cause injury or cast damage.
Question 10
During a portable chest examination, a radiographer must reposition a 220-pound patient who is intubated and has multiple IV lines. The patient needs to be turned from supine to left lateral position. What sequence of actions demonstrates proper body mechanics and patient safety?
- Secure all lines and tubes, position draw sheet, maintain wide base of support, pivot at hips while keeping back straight, and coordinate turn with respiratory therapy (correct answer)
- Lower the bed to working height, secure lines, use draw sheet for turning, keep feet together for stability, and rotate spine while turning patient to lateral position
- Raise bed to appropriate height, secure all equipment, position draw sheet, maintain narrow stance for precision, and use back muscles to generate turning force
- Keep bed at current height to save time, hold IV lines while turning, use arms to pull patient to lateral position, and coordinate with nursing staff after positioning
Explanation: Proper body mechanics requires securing all medical equipment first, using a draw sheet for leverage, maintaining a wide base of support for stability, pivoting at the hips to protect the spine, and coordinating with other healthcare providers managing the patient's airway. Choice B incorrectly suggests keeping feet together, which reduces stability. Choice C suggests using back muscles instead of leg muscles and maintaining a narrow stance. Choice D compromises safety by not securing lines first and lacks proper body mechanics.
Question 11
A radiographer is preparing to assist a patient with advanced Parkinson's disease in transferring from a wheelchair to the examination table. Which of the following MOST accurately describes the specific handling considerations for this patient?
- Standard transfer technique is appropriate for Parkinson's patients; the resting tremor is the primary Parkinson's symptom and does not significantly affect transfer safety
- Parkinson's patients should be transferred quickly and efficiently to minimize the time they are at risk of falling; expedited technique reduces fall risk for patients with balance disorders
- Use a gait belt and allow extra time for movement; employ visual or auditory cues if freezing occurs, and consider a second assistant for stability due to postural instability and bradykinesia. (correct answer)
- The most significant concern with Parkinson's patients during transfer is the resting tremor; firm restraint of the affected limb during positioning is the appropriate technique to dampen movement and ensure adequate immobilization
Explanation: How to get the right answer: Parkinson's disease produces three motor features that are each independently dangerous during patient transfers. Bradykinesia and rigidity make all movements slow and effortful, and the patient's movement speed is neurological in origin, not volitional; rushing bypasses their ability to plan and execute each step, which produces loss of balance. Postural instability results from loss of the automatic righting reflexes that normally prevent a stumble from becoming a fall; unlike healthy individuals who can quickly correct an off-balance position, Parkinson's patients cannot recover once they begin to tip. Freezing episodes are abrupt, unpredictable inabilities to initiate the next movement; forcing the patient through a freeze risks falls and injury, while cueing with visual or rhythmic auditory stimuli exploits preserved neural pathways that can bypass the freezing mechanism. Resting tremor is actually the least functionally limiting feature for transfers. Why the other answers are wrong: Choice A is wrong because resting tremor is the most visible but least dangerous Parkinson's feature for transfer safety; bradykinesia, postural instability, and freezing are the clinically significant risks that require explicit management. Choice B is wrong because speed is the opposite of what Parkinson's patients require; bradykinesia is neurologically determined and cannot be overcome by rushing; rapid transfers bypass movement planning and are a primary fall mechanism in this population. Choice D is wrong because physically restraining a patient's limbs without consent is clinically and ethically inappropriate; Parkinson's tremor is a neurological symptom managed medically, not by manual restraint during imaging. Big idea to remember: Parkinson's transfers require extra time (never rush), continuous gait belt contact, and a specific response to freezing: stop and use visual or auditory cues to restart movement, never push or force.
Question 12
A patient arrives on a backboard with a suspected thoracic spine fracture requiring imaging. At least three personnel are available. Which of the following MOST accurately describes the correct logroll technique for safely repositioning this patient?
- One person rotates the patient's head first, followed immediately by the body; the head-first approach maintains cervical alignment and allows the torso to follow without independent movement
- Two people can safely perform the logroll: one at the head controlling cervical stabilization and one at the feet; this is the accepted minimum for spine-precaution repositioning
- A conscious and cooperative patient may direct their own logroll; self-directed movement eliminates the risk of staff error during repositioning
- Three personnel logroll the patient simultaneously: one stabilizes the head, one supports the torso, and one manages the hips, ensuring the spine remains aligned as a single unit. (correct answer)
Explanation: How to get the right answer: The logroll prevents spinal cord injury by eliminating segmental rotation during repositioning. A thoracic vertebral fracture may be mechanically unstable; if the head and neck are moved first while the torso remains stationary, or if the hips rotate before the torso, shear forces are applied across the fracture site, which can displace fragments into the spinal cord and cause irreversible neurological injury. Three personnel are required because three simultaneous stabilization points (head and cervical spine, thoracic spine, lumbar spine and pelvis) maintain the spine as one rigid column during the roll. The head person's leadership role ensures that all three segments move together at exactly the same moment and rate. Two personnel cannot provide three-point control simultaneously, leaving one spinal region unguided during the roll. Why the other answers are wrong: Choice A is wrong because moving the head first before the body is the precise dangerous motion the logroll is designed to prevent; segmental head movement relative to the stationary torso generates shear forces directly at the fracture site and represents a high risk of catastrophic cord injury. Choice B is wrong because two personnel cannot simultaneously stabilize the head, thoracic region, and pelvis during the roll; the unguarded mid-body segment can rotate independently, negating the logroll's protective intent. Choice C is wrong because a patient with a suspected spinal fracture cannot safely perform their own logroll; self-directed movement cannot maintain three-point simultaneous stabilization of all spinal regions and may inadvertently rotate through the injury site. Big idea to remember: The logroll requires a minimum of three personnel — head (team leader), torso, and hips — who move simultaneously on the leader's count to keep the spine as one rigid unit; the head person commands, all three move together, and no segmental rotation is permitted at any point.
Question 13
A patient with left-sided weakness following a stroke is being transferred from a wheelchair to the radiographic examination table. The patient can partially bear weight on the right side. Which of the following MOST accurately describes the optimal wheelchair positioning and transfer approach?
- Position the wheelchair on the patient's right (stronger) side at a 30 to 45-degree angle to the table to facilitate a pivot using the stronger side. (correct answer)
- Position the wheelchair on the patient's left (affected) side because the table must be on the stronger side to provide support during the pivot
- Position the wheelchair directly in front of the table at 90 degrees to the table surface to minimize the distance the patient must travel during the pivot
- Wheelchair positioning relative to the patient's affected side is not clinically relevant for a routine wheelchair-to-table transfer; place the chair in the most convenient position for the radiographer
Explanation: How to get the right answer: In a pivot transfer, the patient uses both the arms and the legs to stand, rotate, and sit. For a hemiplegic patient with left-sided weakness, the table must be placed on the right (stronger) side so that the patient's strong right arm and right leg do the mechanical work of the pivot. If the table were on the left, the pivot would force weight-bearing and rotation through the weak limbs, which produces poor mechanical control and dramatically increases fall risk. The 30 to 45 degree angle minimizes the arc of rotation the patient must complete, making the movement faster and more controlled than a 90-degree approach. The radiographer's position on the left (weaker) side serves two simultaneous purposes: providing a physical guard against falling toward the weak side and protecting the weak limb from uncontrolled movement, while leaving the strong right side free for the patient to lead the transfer. Why the other answers are wrong: Choice B places the wheelchair on the affected side, which forces the patient to transfer toward the weaker limbs, requiring the deficient arm and leg to bear primary load during the pivot; this is mechanically disadvantaged and the highest fall-risk configuration for a hemiplegic patient. Choice C uses a 90-degree angle, which maximizes the rotational arc the patient must travel; the 30 to 45-degree angle minimizes travel distance and makes the pivot more efficient and controlled. Choice D dismisses the direction of transfer relative to the patient's paretic side; the direction of transfer relative to the patient's paretic side is one of the most clinically important positioning decisions for stroke patients; improper direction significantly increases the risk of falls and injury. Big idea to remember: For hemiplegic patients, always transfer toward the stronger side: place the wheelchair on the stronger side at 30 to 45 degrees, let the strong limbs drive the pivot, and stand on the weak side to guard without blocking.
Question 14
A patient being positioned for a portable chest radiograph has an intercostal chest tube connected to a water-seal drainage system. Which of the following MOST accurately describes the critical management considerations for the chest tube during positioning?
- The drainage collection chamber should be raised to the patient's chest level during positioning to equalize pressure across the tubing and prevent unintended siphoning
- The chest tube may be clamped with a rubber-shod clamp for up to 5 minutes during repositioning to prevent accidental dislodgement
- The drainage collection chamber must remain below chest level to ensure proper drainage and prevent fluid backflow; never clamp the chest tube without a physician's order to avoid tension pneumothorax. (correct answer)
- Rigid immobilization wraps or compression devices applied to the tube's insertion site against the chest wall represent the preferred method for stabilizing chest tubes during radiographic positioning and preventing movement-related complications
Explanation: How to get the right answer: Chest tube drainage systems rely on gravity and the water-seal mechanism to continuously remove air and fluid from the pleural space. If the drainage chamber is elevated above the chest, the hydrostatic pressure relationship reverses and fluid in the tubing and chamber flows back into the pleural space, worsening the underlying condition the tube was placed to treat. The clamping prohibition is the most safety-critical rule: when a chest tube is clamped and an active air leak is present, air continues to enter the pleural space through the leak but has no outlet through the clamped tube; the accumulating air compresses mediastinal structures, impedes venous return to the heart, and causes cardiovascular collapse. Two distinct accidental events require different responses: accidental disconnection from the drainage system is managed by submerging the open tube end in sterile water to restore the water seal until the system can be reconnected, followed by prompt clinical team notification. Tube dislodgement from the chest wall entirely is a different and more urgent emergency requiring immediate occlusion of the chest wall insertion site with a gloved hand and an occlusive dressing, and emergency assistance must be called without delay. Why the other answers are wrong: Choice A is wrong because raising the chamber to chest level eliminates the gravity gradient required for drainage and directly risks retrograde flow of drainage fluid back into the pleural space; the chamber must always be below chest level. Choice B is wrong because clamping a chest tube without physician order is specifically prohibited because of the tension pneumothorax risk from clamping in the presence of an active air leak; routine clamping during positioning is not acceptable practice. Choice D is wrong because rigid compression devices applied to the insertion site could impede chest wall movement and would not address the primary management requirements; adequate tubing slack with standard tube security is the correct approach. Big idea to remember: Two absolute rules for chest tube management: the drainage chamber must always remain below the patient's chest, and the tube must never be clamped without a physician order. Two distinct emergencies require different responses: accidental disconnection from the drainage system is managed by re-establishing a water seal (submerge the open end in sterile water) and notifying the clinical team; tube dislodgement from the chest wall requires immediate occlusion of the insertion site and emergency assistance.
Question 15
A patient has completed a supine abdominal CT and needs to be assisted to a sitting position on the edge of the examination table before standing. Which of the following MOST accurately describes the correct technique?
- Assist the patient to roll onto their side, then guide them to a sitting position by lowering their legs off the table edge while supporting their shoulder and hips, allowing gravity to aid the movement. (correct answer)
- The patient should perform a straight sit-up from supine using an abdominal crunch motion; this technique uses the core muscles and represents the most direct path from supine to sitting
- The table should be lowered to its minimum height before asking the patient to sit up; placing the patient closer to the floor reduces injury risk if they fall during the position change
- The patient should hold their breath and push straight up with both arms simultaneously; the bilateral arm-press technique transfers all lifting effort to the upper extremities and protects the abdominal muscles during the position change
Explanation: How to get the right answer: The log-roll to sitting method converts the mechanically disadvantaged straight sit-up into a lever-assisted movement. When the patient is first rolled onto their side, gravity acts on the legs when they are moved off the table edge, pulling them downward. This downward leg movement produces an opposing upward rotation of the torso through a seesaw effect, reducing the abdominal and core muscle strength required. Many patients, particularly the elderly, post-procedural patients, or those who have fasted, do not have sufficient abdominal strength for a controlled straight sit-up, and an uncontrolled rise in a straight sit-up produces poor balance and fall risk. The 30-second sitting stabilization pause is essential because orthostatic hypotension occurs as blood redistributes from the central circulation to the lower extremity venous reservoir when the legs are lowered; this process takes seconds to minutes, and a patient who stands immediately from the supine position without a pause is at maximum risk for dizziness and fall. Why the other answers are wrong: Choice B is wrong because a straight sit-up requires full abdominal muscle strength and provides poor momentum control; many patients cannot execute it safely, and an abrupt uncontrolled rise risks both dizziness and fall. Choice C is wrong because lowering the table height does reduce fall distance if a fall occurs but does not address the mechanics of safely achieving the sitting position; orthostatic assessment after sitting is the more important safety element. Choice D is wrong because bilateral arm pressing without the log-roll still does not use the mechanical advantage of the leg counterbalance, and holding the breath (Valsalva maneuver) increases intrathoracic and intraabdominal pressure and is not a recommended technique for patient position changes. Big idea to remember: Use the log-roll to sitting method (side first, then simultaneous legs off and torso up) to mechanically assist the position change, and always pause the patient in the sitting position for at least 30 seconds before standing to screen for orthostatic hypotension.
Question 16
A radiographer considers applying a wide Velcro strap across the waist of an elderly patient with mild dementia who moves frequently during examinations. Which of the following MOST accurately describes the ethical and professional distinction between a positioning aid and a physical restraint?
- Any device applied across a supine patient on an examination table is legally classified as a physical restraint and requires a physician order, regardless of the device's intended purpose
- A positioning aid becomes a physical restraint when used without patient cooperation or if the patient resists, requiring a physician order and documentation. (correct answer)
- Positioning aids used in radiology for imaging purposes require no patient communication or documentation; any device applied to reduce motion artifact is automatically appropriate regardless of the patient's response
- Physical restraint regulations apply only to psychiatric patients; positioning devices used during medical imaging are categorically excluded from restraint regulations in all clinical settings
Explanation: How to get the right answer: The legal and ethical classification of a Velcro strap (or any similar device) depends not on its physical form but on how it is used and how the patient responds. The same strap can be a legitimate positioning aid when the patient understands its purpose and accepts it voluntarily for the duration of imaging, or it can become a physical restraint when the patient resists and the strap is maintained over their objection. Physical restraints in all healthcare settings, including radiology, are regulated by The Joint Commission and Centers for Medicare and Medicaid Services standards, which require physician orders, formal consent, documentation, and periodic reassessment. The least restrictive alternative principle is foundational: alternatives to any physical limitation must be exhausted before applying a restraint, and the minimum effective restriction must be used. Why the other answers are wrong: Choice A is wrong because classification depends on intent, application, and patient response, not on the physical form of the device; a cooperative patient voluntarily accepting a motion-reduction strap for imaging is fundamentally different from a restrained patient. Choice C is wrong because patient communication is always required before any positioning device is applied, and if the patient objects or resists, additional authorization and documentation are mandatory regardless of the device's imaging purpose. Choice D is wrong because restraint regulations under The Joint Commission and CMS apply to all clinical settings including radiology and are not restricted to psychiatric contexts; any device that limits a patient's freedom of movement in a healthcare setting is subject to these standards. Big idea to remember: A positioning aid becomes a physical restraint the moment a patient resists it; when a cognitively impaired patient objects to a strap or device, remove it immediately, explore the least restrictive alternatives, and obtain a physician order if continued restriction is medically necessary.
Question 17
A patient 4 days post-right total hip arthroplasty via posterior approach arrives for a pelvic radiograph. Nursing orders indicate hip precautions are in effect. Which of the following MOST accurately describes the transfer modifications required?
- Hip precautions for a posterior approach total hip arthroplasty apply only to hip flexion exceeding 120 degrees; standard radiographic positioning maneuvers fall well below this threshold and require no modification
- Ensure the right hip remains in slight external rotation and abduction, and adjust table height to prevent flexion beyond 90 degrees during transfer, using a gait belt for safety. (correct answer)
- Hip precautions apply only to the patient's ambulation and therapy; transfers within the radiology suite are too brief to require precaution modifications
- Post-THA hip precautions are the physical therapist's responsibility; the radiographer may use standard transfer technique provided the therapist is consulted after the examination
Explanation: How to get the right answer: Posterior approach THA creates a surgical defect in the posterior hip capsule that requires 3 to 6 months to heal fully. During this healing period, specific combinations of hip movement can lever the femoral head component posteriorly over the acetabular rim, causing prosthetic dislocation. The three movements that produce posterior dislocation are hip flexion beyond 90 degrees, internal rotation, and adduction past midline. The 90-degree flexion restriction is the most commonly encountered constraint in radiology because a standard low chair or examination table at typical height causes the hip to flex to 90 degrees or beyond during sit-to-stand. Adjusting the table to a higher position reduces the hip flexion angle during rising. Any personnel interacting with the patient are responsible for maintaining ordered precautions continuously, regardless of how brief the interaction. Why the other answers are wrong: Choice A is wrong because the posterior approach THA flexion limit is 90 degrees, not 120 degrees; the prosthetic hip can dislocate at angles at or just below 90 degrees depending on simultaneous rotation, and the correct limit must not be inflated. Choice C is wrong because prosthetic dislocation can occur during any single transfer that violates the precaution, regardless of duration; precautions are continuous orders that apply equally to a 2-minute radiology transfer as to any other activity. Choice D is wrong because all healthcare personnel interacting with the patient are responsible for maintaining ordered precautions; the radiographer cannot delegate this obligation to an absent physical therapist. Big idea to remember: Posterior THA hip precautions restrict the operative side to no flexion beyond 90 degrees, no internal rotation, and no adduction past midline; these restrictions apply to every transfer by every care provider, and the examination table must be raised to prevent the patient from flexing the hip excessively during sit-to-stand.