Correct Answer: D

Rationale: The correct answer is D: Impaired gas exchange related to alveolar-capillary membrane changes. This nursing diagnosis is appropriate for a patient with pneumonia and lower lobe infiltrates as it directly addresses the underlying physiological issue of impaired gas exchange due to alveolar-capillary membrane changes. The infiltrates indicate infection and inflammation in the lower lobes, leading to difficulty in oxygen and carbon dioxide exchange. This diagnosis aligns with the patient's medical condition and helps guide nursing interventions focused on improving oxygenation. Choice A is incorrect because ineffective breathing pattern is a broad diagnosis that does not specifically address the gas exchange issue seen in pneumonia. Choice B is incorrect as the risk for infection is already present with the diagnosis of pneumonia and does not directly address the patient's current respiratory status. Choice C is incorrect as dehydration is not the primary concern in a patient with pneumonia and lower lobe infiltrates.

Correct Answer: B

Rationale: Correct Answer: B (State Nurse Practice Acts) Rationale: State Nurse Practice Acts outline the legal scope of nursing practice, including standards for setting priorities, identifying client outcomes, and selecting evidence-based nursing interventions. These laws are specific to nursing practice, ensuring that nurses follow guidelines tailored to their profession. Nurses must adhere to these standards to provide safe and effective care. Summary of Incorrect Choices: A: Professional physicians' organizations - While physicians' organizations may provide guidelines for medical practice, they do not set standards specific to nursing practice. C: The Joint Commission - The Joint Commission focuses on accreditation for healthcare organizations, not setting standards for nursing practice. D: The Agency for Health Care Research and Quality - AHRQ conducts research and provides evidence-based information but does not establish standards for nursing practice.

Correct Answer: B

Rationale: The correct answer is B: Bence jones protein in the urine. In multiple myeloma, abnormal plasma cells produce excess monoclonal immunoglobulins, including Bence Jones proteins, which can be detected in the urine. This is a hallmark finding in multiple myeloma diagnosis. A: Incorrect. Serum creatinine levels are typically not affected in multiple myeloma. C: Incorrect. Hypercalcemia, not hypocalcemia, is commonly seen in multiple myeloma due to bone destruction. D: Incorrect. Multiple myeloma often presents with high serum protein levels, not low levels.

Correct Answer: A

Rationale: Correct Answer: A: Respiratory acidosis Rationale: 1. Respiratory acidosis is caused by inadequate ventilation leading to increased PCO₂ and decreased pH. 2. Low pH indicates acidosis, and high PCO₂ indicates respiratory component. 3. Metabolic acidosis (B) results from non-respiratory causes. 4. Respiratory alkalosis (C) is characterized by high pH and low PCO₂. 5. Metabolic alkalosis (D) is caused by non-respiratory factors with high pH.

Correct Answer: B

Rationale: The correct answer is B: Have patient lie down. When a patient experiences dehiscence (surgical wound separation), lying down helps reduce tension on the wound, minimizing the risk of further tearing. This position also allows the nurse to assess the wound properly. Choice A is incorrect because sitting upright can increase intra-abdominal pressure, worsening the dehiscence. Choice C is incorrect as slowing IV fluids is not a priority in managing dehiscence. Choice D is incorrect because obtaining a sterile suture set should only be done by a healthcare provider and is not the immediate action needed for dehiscence.