The nurse teaches a client about the effects of cold therapy on an injury.
Which statement by the client indicates that the teaching has been effective?
Redness and swelling should decrease after cold treatment.
There will be significantly more discomfort in the area where the cold is applied.
I should expect more serous drainage from the incision after the ice has been in place.
My incision may bleed more when the ice is first applied.
The Correct Answer is A
Choice A rationale
Cold therapy induces local vasoconstriction, which reduces the diameter of blood vessels and decreases capillary permeability. This physiological response limits the leakage of fluid into the interstitial spaces, thereby minimizing edema and swelling at the injury site. Furthermore, the reduction in blood flow slows the inflammatory cascade and decreases the release of chemical mediators like histamine and bradykinin, which effectively reduces redness and provides an analgesic effect by numbing local nerve endings.
Choice B rationale
Cold application typically functions as a local anesthetic by slowing the conduction velocity of sensory nerve fibers. While the initial application of an ice pack might feel uncomfortably cold or produce a stinging sensation, the ultimate goal and expected outcome of cryotherapy is a significant reduction in pain. Increased discomfort would suggest a potential complication, such as cold-induced tissue damage or frostbite, rather than the intended therapeutic effect of soothing the injured area.
Choice C rationale
Cold therapy is designed to decrease vascularity and promote fluid retention within the vessels through constriction. An increase in serous drainage would imply an increase in capillary leakage or inflammatory exudate, which contradicts the intended physiological outcome of ice application. By stabilizing cell membranes and reducing hydrostatic pressure in the capillaries, cold therapy should lead to a drier wound environment and a decrease in the volume of drainage from a surgical incision.
Choice D rationale
Because cold causes the smooth muscles in the walls of the arterioles to contract, the resulting vasoconstriction actually helps to control minor bleeding rather than increasing it. Heat therapy would cause vasodilation and potentially increase bleeding, but cold is a standard intervention for promoting hemostasis. Any observation of increased bleeding following the application of ice would be an abnormal finding and could indicate that the cold has caused skin shivering or other unintended systemic reactions.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["C","E"]
Explanation
Choice A rationale
While being 70 years old is an advanced age, age alone is a less specific predictor of fall risk than functional or physiological impairments. Many 70-year-olds are independent and have high mobility. While being transferred from a long-term care unit suggests a potential for frailty, it is not a primary, high-risk indicator compared to acute physiological instability or a proven history of falls. It is a factor but not a definitive high-risk category.
Choice B rationale
Taking antibiotics is generally not considered a high-risk factor for falls unless the medication causes specific side effects like severe dizziness or ototoxicity. Most standard antibiotics do not impair balance, gait, or cognitive function significantly enough to place a client in a high-risk category. Standard falls assessments, such as the Morse Fall Scale, do not typically weight antibiotic use as a primary risk factor like they do for sedatives or diuretics.
Choice C rationale
Orthostatic hypotension is a significant risk factor for falls. It is defined as a drop in systolic blood pressure of at least 20 mmHg or a drop in diastolic blood pressure of at least 10 mmHg within three minutes of standing. This sudden drop causes cerebral hypoperfusion, leading to dizziness, lightheadedness, and syncope. Clients with this condition are at extreme risk of falling during transitions from a lying or sitting position to standing.
Choice D rationale
While the risk of falling generally increases with age, being older than 60 is a very broad category and does not automatically place a client in the high-risk group. Many individuals over 60 maintain excellent balance and strength. Evidence-based fall assessment tools usually look for more specific clinical indicators, such as gait disturbances, cognitive impairment, or specific medical conditions, rather than using a chronological age cutoff of 60 as a sole high-risk marker.
Choice E rationale
A history of multiple falls is one of the strongest predictors of future falls. It indicates an underlying issue with balance, gait, strength, or environmental safety that has already resulted in incidents. Clinically, this history suggests that the client’s compensatory mechanisms are failing. This makes them a high-priority for fall prevention interventions because the statistical probability of a repeat event is significantly higher than for someone who has never fallen.
Correct Answer is C
Explanation
Choice A rationale
Encouraging the client to keep trying to speak while the tracheostomy tube is in place and the cuff is inflated can lead to extreme frustration and physical exhaustion. Because air is diverted through the tube rather than passing over the vocal cords, vocalization is physiologically impossible or severely muffled for many. Forcing the effort without a speaking valve can cause unnecessary stress and anxiety for a patient already dealing with a compromised airway.
Choice B rationale
Avoiding communication is detrimental to the patient's psychological well-being and safety. Clients with tracheostomies are often highly anxious due to their inability to vocalize needs or fears. Neglecting communication can lead to feelings of isolation, helplessness, and the potential for life-threatening needs to go unaddressed. A nurse must prioritize finding ways to maintain a connection to ensure the patient feels heard, safe, and involved in their own plan of care.
Choice C rationale
Providing alternative communication methods is the standard of care for patients with expressive barriers. Using tools like whiteboards, picture boards, or simple hand gestures allows the patient to convey urgent needs, such as pain or difficulty breathing, effectively. This intervention reduces patient anxiety and empowers them to participate in their care. It also ensures that the nursing staff can accurately assess the patient's condition despite the temporary loss of verbal speech capabilities.
Choice D rationale
While the family can provide emotional support, the nurse should not rely on them as the primary interpreters of clinical needs. The nurse is responsible for establishing a direct and reliable communication channel with the patient to ensure accurate assessment and safety. Relying on third parties can lead to misinterpretations of the patient's symptoms or desires. Direct communication tools ensure the patient's autonomy is respected and that the information gathered is medically reliable and timely.
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