RN exams medical-surgical practice questions set 19

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:

The presentation of a painful, vesicular rash in a dermatomal distribution on the left thorax, specifically in a patient with a history of chickenpox, is most suggestive of herpes zoster, commonly known as shingles. Herpes zoster is caused by the reactivation of the varicella-zoster virus, the same virus responsible for chickenpox. After a person recovers from chickenpox, the virus remains dormant in the nerve cells and can reactivate years later to cause shingles. The rash in herpes zoster typically progresses through different stages, including red patches leading to fluid-filled blisters. The characteristic rash typically appears unilaterally and is usually preceded by pain, burning, or tingling in the affected area. Unlike herpes simplex virus infection, which can cause similar lesions but is not typically localized to a specific dermatome, herpes zoster presents as a distinct unilateral cluster of vesicles along

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:

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:

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:

The presentation described in the question – sudden-onset unilateral headache along with ipsilateral ptosis, miosis, and anhidrosis – is characteristic of Horner syndrome. Horner syndrome is caused by disruption of the sympathetic nerve pathway and can occur in trigeminal neuralgia. Trigeminal neuralgia is a painful condition affecting the trigeminal nerve commonly characterized by sudden and severe facial pain that can be triggered by various stimuli. The involvement of the sympathetic pathway in trigeminal neuralgia can lead to Horner syndrome symptoms such as ptosis (drooping eyelid), miosis (constricted pupil), and anhidrosis (lack of sweating) on the affected side of the face. Cluster headaches usually involve severe unilateral pain around the eye, but they do not typically present with Horner syndrome symptoms. Migraine and tension-type headaches also do not typically present with Horner syndrome symptoms.

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:

The correct answer is A: Reposition the patient every 1 to 2 hours. This task can be safely delegated to experienced UAP as it involves a routine activity to prevent pressure ulcers and maintain circulation. UAPs are trained and competent in repositioning techniques. Repositioning is crucial after hip arthroplasty to prevent complications like pressure ulcers and deep vein thrombosis. Other Choices: B: Assess for skin irritation on the patient’s back - This requires nursing assessment and critical thinking skills. UAPs are not qualified to assess for skin issues. C: Teach the patient quadriceps-setting exercises - This involves patient education and requires nursing knowledge. UAPs should not provide patient education. D: Determine the patient’s pain intensity and tolerance - Pain assessment is a nursing responsibility that requires clinical judgment and expertise. UAPs should not assess or determine pain levels.