A nurse is teaching a client how to do pursed-lip breathing.
What is the therapeutic effect of this procedure?
Reducing the use of as needed (PRN) pain medications.
Using chest muscles more effectively.
Replacing the need to use an incentive spirometer.
Prolonging expiration to reduce airway resistance.
The Correct Answer is D
Choice A rationale
Pain management is often secondary to physiological stabilization in respiratory care. While relaxation techniques might indirectly decrease the subjective perception of discomfort, pursed-lip breathing is specifically designed to address ventilation mechanics rather than pharmacological needs. Reducing PRN medications depends on addressing the underlying source of pain, whereas this breathing technique focuses on the alveolar pressure and air trapping associated with obstructive pulmonary conditions rather than analgesia.
Choice B rationale
Effective breathing techniques actually aim to reduce the reliance on accessory chest muscles rather than increasing their use. Overuse of intercostal and scalene muscles often indicates respiratory distress and increased work of breathing. The goal of pursed-lip breathing is to promote diaphragmatic efficiency and decrease the strain on the upper chest musculature. Increasing chest muscle use would be counterproductive and lead to faster patient fatigue and respiratory exhaustion.
Choice C rationale
An incentive spirometer is primarily used to encourage deep inspiration and prevent atelectasis by opening collapsed alveoli, particularly after surgery. Pursed-lip breathing focuses on the expiratory phase of the respiratory cycle. These two interventions serve different physiological purposes and are often used together rather than one replacing the other. Spirometry focuses on inhalation volume, while pursed-lip breathing focuses on maintaining airway patency during the exhalation process.
Choice D rationale
This technique creates positive end-expiratory pressure by providing resistance at the lips. This pressure is transmitted back through the airways, preventing them from collapsing during exhalation. By prolonging the expiratory phase, it allows for more complete emptying of the lungs and reduces the amount of trapped air. This is especially vital for clients with chronic obstructive pulmonary disease to improve gas exchange and decrease the sensation of dyspnea during physical exertion.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A rationale
Safety event reports, also known as incident reports, are designed to record facts rather than subjective opinions or future recommendations. While hospitals use these reports for quality improvement and to develop prevention strategies, the individual filling out the report should focus on what actually happened. Adding suggestions within the primary report can sometimes complicate the objective nature of the legal document. Prevention analysis is usually handled by a separate risk management committee during follow-up reviews.
Choice B rationale
Discussing the report details with a confused client before documenting is often counterproductive and may lead to inaccurate information. A confused client may not have a reliable memory of the fall, and their input might be influenced by their cognitive state. The nurse's primary duty is to assess the client for injuries immediately. Once the client is safe, the nurse should document the objective findings and observed events directly, rather than waiting for a discussion with the client.
Choice C rationale
Accuracy in the medical record is essential for legal and clinical reasons after a fall. The nurse must document the objective facts of the event, including the time, the client's position when found, and any immediate physical findings or symptoms. Additionally, the nurse must record the interventions taken, such as notifying the physician and the client's subsequent response. This provides a clear timeline and evidence that the standard of care was followed to protect the client.
Choice D rationale
Providing minimal information is a poor practice that can lead to missing critical data needed for root cause analysis. A safety report must be thorough and include all relevant environmental factors, such as whether the bed rails were up or if the floor was wet. Omitting details can mask patterns that contribute to falls across a unit. Comprehensive reporting is the only way to ensure that healthcare systems can learn from errors and improve patient safety outcomes.
Correct Answer is A
Explanation
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.
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