LPN exams medical-surgical practice questions set 12

Correct answer:

The correct answer is A because administering patch testing is a technical task that an LPN/LVN is qualified to perform. LPNs/LVNs are trained in basic patient care and medication administration. Patch testing involves applying allergens to a patient's skin to determine allergic reactions. This task does not require advanced assessment or critical thinking skills. Choice B involves interviewing a new patient about chronic health problems and allergies, which requires comprehensive assessment and critical thinking abilities typically performed by a registered nurse (RN). Choice C involves applying a sterile dressing after a medical procedure, which requires a higher level of assessment and critical thinking beyond the scope of an LPN/LVN. Choice D involves patient education after a medical procedure, which also requires a more advanced level of nursing assessment and critical thinking typically performed by an RN.

Correct answer:

The most likely diagnosis is primary sclerosing cholangitis (PSC) based on the patient's symptoms of fatigue, pruritus, jaundice, and elevated bilirubin and alkaline phosphatase levels. PSC is commonly associated with inflammatory bowel disease, such as ulcerative colitis. The characteristic findings of elevated alkaline phosphatase and bilirubin levels are indicative of cholestasis, which is a key feature of PSC. Additionally, PSC is characterized by fibrosis and inflammation of the bile ducts, leading to bile duct strictures and subsequent liver damage. Hepatitis B would present with viral hepatitis symptoms and different lab findings. Primary biliary cirrhosis typically presents with elevated alkaline phosphatase and antimitochondrial antibodies. Autoimmune hepatitis would have elevated transaminases and autoantibodies. Therefore, based on the clinical presentation and lab results, PSC is the most likely diagnosis.

Correct answer:

Nails originate from the nail matrix, a specialized epidermal region beneath the proximal nail fold. The matrix contains actively dividing keratinocytes that produce the nail plate, a hard keratin structure, through keratinization. As cells proliferate, they push the nail forward over the nail bed, determining its growth and thickness. The eponychium, or cuticle, is the skin fold overlapping the nail's base, protecting the matrix but not forming the nail. The lunula, the white crescent at the nail's base, is part of the matrix visible through the thin nail, not the origin. 'Cuticle' often refers to the eponychium in common use, but anatomically, it's not the nail's source. The matrix's role is evident in nail regrowth after injury damage here alters nail shape, unlike other regions. Dermatological texts confirm the matrix as the nail's generative tissue, distinguishing it from surrounding protective or visible parts.

Correct answer:

Rationale for Correct Answer (A: Skin flap): 1. A skin flap involves transferring skin and subcutaneous tissue to repair extensive tissue loss. 2. Skin flaps have a direct blood supply, ensuring better survival in large areas of deep tissue destruction. 3. The term "skin graft" usually refers to a procedure where skin is transplanted without its own blood supply. 4. Therefore, a skin flap, with its vascular supply intact, is the appropriate choice. Summary of Incorrect Choices: B: Free graft - Incorrect because free grafts lack a direct blood supply and are more suitable for smaller areas. C: Soft tissue extension - Incorrect as it does not specifically describe the technique of transferring skin and subcutaneous tissue. D: Free graft with vascular anastomoses - Incorrect as this refers to a different technique involving connecting blood vessels, not commonly used for large areas of deep tissue destruction.

Correct answer:

Nails originate from the nail matrix, a specialized epidermal region beneath the proximal nail fold. The matrix contains actively dividing keratinocytes that produce the nail plate, a hard keratin structure, through keratinization. As cells proliferate, they push the nail forward over the nail bed, determining its growth and thickness. The eponychium, or cuticle, is the skin fold overlapping the nail's base, protecting the matrix but not forming the nail. The lunula, the white crescent at the nail's base, is part of the matrix visible through the thin nail, not the origin. 'Cuticle' often refers to the eponychium in common use, but anatomically, it's not the nail's source. The matrix's role is evident in nail regrowth after injury damage here alters nail shape, unlike other regions. Dermatological texts confirm the matrix as the nail's generative tissue, distinguishing it from surrounding protective or visible parts.

Correct answer:

Nails originate from the nail matrix, a specialized epidermal region beneath the proximal nail fold. The matrix contains actively dividing keratinocytes that produce the nail plate, a hard keratin structure, through keratinization. As cells proliferate, they push the nail forward over the nail bed, determining its growth and thickness. The eponychium, or cuticle, is the skin fold overlapping the nail's base, protecting the matrix but not forming the nail. The lunula, the white crescent at the nail's base, is part of the matrix visible through the thin nail, not the origin. 'Cuticle' often refers to the eponychium in common use, but anatomically, it's not the nail's source. The matrix's role is evident in nail regrowth after injury damage here alters nail shape, unlike other regions. Dermatological texts confirm the matrix as the nail's generative tissue, distinguishing it from surrounding protective or visible parts.

Correct answer:

Correct Answer: B - High-protein diet with vitamins and mineral supplements Rationale: 1. High-protein diet aids in tissue repair and wound healing, crucial for preventing pressure ulcer formation. 2. Vitamins and mineral supplements support overall nutritional status, essential for skin integrity and healing. 3. Protein is vital for maintaining muscle mass, which helps prevent pressure ulcers. 4. Focusing on protein and essential nutrients is key for overall health and immune function. Summary of other choices: A: Low-fat diet may lack essential nutrients for wound healing. Vitamin supplements alone may not provide adequate protein for tissue repair. C: A vegetarian diet can be nutritious, but fish oil may not be sufficient for protein needs. Nutritional supplements may not provide enough protein. D: Low-fat, low-cholesterol, high-fiber, low-carb diet may lack adequate protein for tissue repair and wound healing.

Correct answer:

A sliver penetrating the skin of the hand moves from the outermost epidermal layer inward to the dermis. The hand's skin is thick, containing all five epidermal layers. The sequence begins with the stratum corneum, the tough, dead, keratinized surface, followed by the stratum lucidum, a clear layer of dead cells found in thick skin. Next is the stratum granulosum, where keratinization starts, then the stratum spinosum, with its spiny, interconnected cells, and finally the stratum germinativum, the basal layer adjacent to the dermis where cell division occurs. The sliver pierces outward to inward: corneum, lucidum, granulosum, spinosum, germinativum, before reaching the dermis. This order reflects the histological arrangement of thick skin, as seen in palms and soles, where each layer's position and function (protection, transition, cell production) dictate the penetration path, aligning with anatomical descriptions.

Correct answer:

A sliver penetrating the skin of the hand moves from the outermost epidermal layer inward to the dermis. The hand's skin is thick, containing all five epidermal layers. The sequence begins with the stratum corneum, the tough, dead, keratinized surface, followed by the stratum lucidum, a clear layer of dead cells found in thick skin. Next is the stratum granulosum, where keratinization starts, then the stratum spinosum, with its spiny, interconnected cells, and finally the stratum germinativum, the basal layer adjacent to the dermis where cell division occurs. The sliver pierces outward to inward: corneum, lucidum, granulosum, spinosum, germinativum, before reaching the dermis. This order reflects the histological arrangement of thick skin, as seen in palms and soles, where each layer's position and function (protection, transition, cell production) dictate the penetration path, aligning with anatomical descriptions.

Correct answer:

A sliver penetrating the skin of the hand moves from the outermost epidermal layer inward to the dermis. The hand's skin is thick, containing all five epidermal layers. The sequence begins with the stratum corneum, the tough, dead, keratinized surface, followed by the stratum lucidum, a clear layer of dead cells found in thick skin. Next is the stratum granulosum, where keratinization starts, then the stratum spinosum, with its spiny, interconnected cells, and finally the stratum germinativum, the basal layer adjacent to the dermis where cell division occurs. The sliver pierces outward to inward: corneum, lucidum, granulosum, spinosum, germinativum, before reaching the dermis. This order reflects the histological arrangement of thick skin, as seen in palms and soles, where each layer's position and function (protection, transition, cell production) dictate the penetration path, aligning with anatomical descriptions.