Adult Health Nursing Test Bank

Correct Answer: C

Rationale: The correct answer is C: Systematic sampling. Nurse Sandy is adopting systematic sampling by selecting every third patient with MI after a random start. This method ensures equal chance of selection for each patient and maintains randomness. In contrast, simple random sampling (A) entails each patient having an equal chance of being selected independently. Stratified sampling (B) divides patients into groups based on certain characteristics, which is not the case here. Cluster sampling (D) involves grouping patients and selecting entire groups, which is different from the individual selection in this scenario.

Correct Answer: D

Rationale: The correct answer is D: Teeth. Teeth are responsible for the initial mechanical breakdown of food during mastication. Step 1: Teeth use their hard surfaces to chew and grind food into smaller pieces. Step 2: This process increases the surface area of the food, making it easier for digestive enzymes to break down. Step 3: The tongue aids in moving the food around the mouth but does not break down the food mechanically. Pharynx is responsible for swallowing, not mastication. Salivary glands produce saliva that helps in the lubrication and digestion of food, but they do not directly participate in the mechanical breakdown of food.

Correct Answer: B

Rationale: The correct answer is B: Herpes simplex virus infection. The presentation of a painful, vesicular rash following a linear pattern on the left forearm is characteristic of herpes simplex virus infection, specifically herpes zoster (shingles). The linear pattern is due to the virus following a specific nerve pathway. This is different from the other choices - A: Allergic contact dermatitis typically presents as a diffuse rash at the site of contact with an allergen, not a linear pattern. C: Scabies presents with burrows and papules, not vesicles in a linear pattern. D: Poison ivy dermatitis causes a diffuse rash, not a linear vesicular rash.

Correct Answer: A

Rationale: One potential complication of epidural analgesia in labor is maternal hypotension. The epidural analgesic can cause vasodilation, leading to a decrease in blood pressure. Maternal hypotension can result in decreased placental perfusion, which may jeopardize fetal well-being. It is important for healthcare providers to monitor the maternal blood pressure closely and intervene promptly if hypotension occurs by providing IV fluids or administering medication to raise blood pressure. Uterine hyperstimulation, fetal tachycardia, and respiratory depression are not typically associated with epidural analgesia as complications.

Correct Answer: B

Rationale: The correct answer is B: osteoporosis. Osteoporosis is a condition characterized by weakened bones, making individuals more susceptible to fractures, especially with minor trauma or falls. In the context of a patient prone to fractures, nurses should be particularly cautious about fall prevention. A: The aging process alone does not necessarily lead to an increased risk of fractures. While aging is a risk factor for osteoporosis, it is not the direct cause of fractures in this case. C: Changes in vision can contribute to an increased risk of falls, but it is not the primary reason for the patient being prone to fractures in this scenario. D: Hematologic conditions may affect bone health, but they are not typically the primary cause of increased fracture risk in patients.