LPN exams medical-surgical practice questions set 10

Correct answer:

The correct answer is A because a patient with periorbital cellulitis requires close monitoring and immediate intervention due to the risk of complications such as vision loss or intracranial involvement. This assignment will provide the new graduate with an opportunity to develop critical thinking skills and prioritize care for a potentially unstable patient. Choice B is incorrect because a patient needing discharge instructions after skin grafts is usually stable and may not require acute interventions, making it less suitable for a new graduate. Choice C is incorrect because a dressing change for a stage 3 pressure ulcer post-hydrotherapy is a routine procedure that may not challenge the new graduate's critical thinking skills or require immediate interventions. Choice D is incorrect as teaching before a punch biopsy is important but not as time-sensitive or critical compared to managing a patient with periorbital cellulitis.

Correct answer:

The correct answer is A because it encourages open communication between the patient, nurse, and provider to ensure the best possible outcome for both the patient's health and desire to start a family. By discussing the desire to start a family with the provider, the risks associated with immune modulating medications can be assessed, and appropriate steps can be taken to minimize these risks. This approach allows for personalized care and decision-making based on the individual's specific situation. Choice B is incorrect because discontinuing immune modulating drugs without proper guidance can have negative consequences for the patient's health. Choice C is incorrect because while some immune modulating drugs may have teratogenic effects, not all drugs in this class are equally harmful. Choice D is incorrect as it presents a limited view that pregnancy is not an option without considering individual circumstances and medical advice.

Correct answer:

Consulting with the provider about surgical debridement is the correct action for a diabetic foot ulcer with black, dry, hard eschar. Eschar indicates significant necrotic tissue, which delays healing and heightens infection risk in diabetic patients, who are prone to complications due to poor vascularity and immune response. Surgical debridement swiftly removes this barrier, exposing viable tissue for healing, and is the most efficient method for extensive necrosis. Wet-to-dry dressings are outdated and inappropriate for dry eschar, as they're better for moist slough and can harm healthy tissue. Transparent film traps moisture but doesn't address necrosis, risking infection beneath the eschar. Leaving it open to air invites contamination and drying, slowing recovery. Given the wound's severity and diabetes context, consulting for surgical intervention ensures timely, effective management, reducing risks like osteomyelitis or amputation.

Correct answer:

Consulting with the provider about surgical debridement is the correct action for a diabetic foot ulcer with black, dry, hard eschar. Eschar indicates significant necrotic tissue, which delays healing and heightens infection risk in diabetic patients, who are prone to complications due to poor vascularity and immune response. Surgical debridement swiftly removes this barrier, exposing viable tissue for healing, and is the most efficient method for extensive necrosis. Wet-to-dry dressings are outdated and inappropriate for dry eschar, as they're better for moist slough and can harm healthy tissue. Transparent film traps moisture but doesn't address necrosis, risking infection beneath the eschar. Leaving it open to air invites contamination and drying, slowing recovery. Given the wound's severity and diabetes context, consulting for surgical intervention ensures timely, effective management, reducing risks like osteomyelitis or amputation.

Correct answer:

The correct answer is B because mature naïve T cells that leave the thymus can include self-reactive T cells that have not been tolerized against a specific antigen. This is because the process of negative selection in the thymus eliminates most self-reactive T cells but does not catch all of them. Some self-reactive T cells may escape negative selection and circulate as mature naïve T cells. Therefore, it is possible for mature naïve T cells leaving the thymus to include self-reactive T cells that have not been tolerized against a specific antigen. Choices: A: This is incorrect because although negative selection in the thymus eliminates most self-reactive T cells, it does not catch all of them, so some self-reactive T cells may still be present in the mature naïve T cell population. C: This is incorrect because mature naïve T cells already have the ability to recognize antigens presented by MHC, which is developed in the th

Correct answer:

Goosebumps occur when small muscles attached to hair follicles contract, causing hairs to stand upright and skin to pucker. These are the arrector pili muscles, smooth muscles in the dermis anchored to the hair follicle base and the epidermal-dermal junction. When stimulated by cold or emotion (via the sympathetic nervous system), they contract, pulling hairs erect, an evolutionary vestige from furrier ancestors to trap heat or signal threat. Sebaceous glands secrete sebum to lubricate hair and skin, not to cause goosebumps. 'Cappilary' (likely a typo for capillary) refers to blood vessels, which adjust for temperature but don't directly produce goosebumps. Collagen provides dermal strength but is a passive fiber, not a muscle. The arrector pili's action is involuntary, linked to thermoregulation and emotional response, and its distinct role in piloerection visible as goosebumps sets it apart as the key structure in this phenomenon.

Correct answer:

Goosebumps occur when small muscles attached to hair follicles contract, causing hairs to stand upright and skin to pucker. These are the arrector pili muscles, smooth muscles in the dermis anchored to the hair follicle base and the epidermal-dermal junction. When stimulated by cold or emotion (via the sympathetic nervous system), they contract, pulling hairs erect, an evolutionary vestige from furrier ancestors to trap heat or signal threat. Sebaceous glands secrete sebum to lubricate hair and skin, not to cause goosebumps. 'Cappilary' (likely a typo for capillary) refers to blood vessels, which adjust for temperature but don't directly produce goosebumps. Collagen provides dermal strength but is a passive fiber, not a muscle. The arrector pili's action is involuntary, linked to thermoregulation and emotional response, and its distinct role in piloerection visible as goosebumps sets it apart as the key structure in this phenomenon.

Correct answer:

Goosebumps occur when small muscles attached to hair follicles contract, causing hairs to stand upright and skin to pucker. These are the arrector pili muscles, smooth muscles in the dermis anchored to the hair follicle base and the epidermal-dermal junction. When stimulated by cold or emotion (via the sympathetic nervous system), they contract, pulling hairs erect, an evolutionary vestige from furrier ancestors to trap heat or signal threat. Sebaceous glands secrete sebum to lubricate hair and skin, not to cause goosebumps. 'Cappilary' (likely a typo for capillary) refers to blood vessels, which adjust for temperature but don't directly produce goosebumps. Collagen provides dermal strength but is a passive fiber, not a muscle. The arrector pili's action is involuntary, linked to thermoregulation and emotional response, and its distinct role in piloerection visible as goosebumps sets it apart as the key structure in this phenomenon.

Correct answer:

The correct answer is C: Kayexalate retention enema. In acute renal failure with high serum potassium levels, the priority is to lower potassium levels to prevent cardiac complications. Kayexalate works by exchanging sodium ions for potassium ions in the intestines, promoting potassium excretion in the feces. This intervention helps reduce serum potassium levels quickly. A: Nitrofurantoin is an antibiotic used to treat urinary tract infections, unrelated to managing hyperkalemia. B: Erythropoietin is a hormone used to stimulate red blood cell production, not indicated for reducing potassium levels. D: Azathioprine is an immunosuppressant used for various conditions like autoimmune diseases, not for managing hyperkalemia. In summary, the correct intervention is to administer a Kayexalate retention enema to lower serum potassium levels effectively in acute renal failure. Other options are not appropriate for managing hyperkalemia.

Correct answer:

The correct answer is B: Areolar connective tissue. In the image, region '2' appears loose and has fibroblasts, collagen fibers, and elastic fibers, typical of areolar connective tissue. Areolar tissue is a loose connective tissue that provides support and elasticity. Rationale: 1. Areolar connective tissue is characterized by loose arrangement of cells and fibers, providing support and elasticity. 2. Presence of fibroblasts, collagen fibers, and elastic fibers in region '2' matches the characteristics of areolar connective tissue. 3. Areolar tissue is commonly found beneath the epithelial layers and around blood vessels and organs, supporting the body and connecting different tissues. Summary: A: Reticular connective tissue is more densely packed with reticular fibers and is found in organs like the spleen and lymph nodes. C: Stratified squamous epithelium is a type of epithelial tissue, which is not seen in region '2'.