Test Bank Pharmacology and the Nursing Process

Correct Answer: C

Rationale: Rationale: 1. Insulin is a hormone produced by beta cells of the pancreas. 2. Beta cells are responsible for monitoring blood glucose levels and secreting insulin in response to high glucose levels. 3. Insulin helps regulate blood glucose by facilitating glucose uptake into cells. 4. Adenohypophysis secretes other hormones, not insulin. 5. Alpha cells of the pancreas secrete glucagon, not insulin. 6. Parafollicular cells of the thyroid secrete calcitonin, not insulin. Summary: Choice C is correct because insulin is indeed secreted from the beta cells of the pancreas. Choices A, B, and D are incorrect as they do not secrete insulin or are related to other hormones.

Correct Answer: A

Rationale: The correct answer is A because in surgical asepsis, sterile articles should not touch other sterile articles or surfaces to maintain sterility. Choice B is correct as surgical team gowns are sterile in front. Choice C is correct as any breach makes the area contaminated. Choice D is correct as sterile drapes create a sterile field.

Correct Answer: D

Rationale: Correct Answer: D. Antagonize the action of K on the heart Rationale: 1. Calcium gluconate stabilizes cardiac cell membranes during hyperkalemia. 2. By antagonizing the effects of potassium on the heart, it helps prevent life-threatening cardiac arrhythmias. 3. It does not lower potassium levels immediately or prevent transient renal failure. 4. Administering calcium gluconate is specific to addressing the cardiac effects of hyperkalemia, not renal or overall potassium reduction.

Correct Answer: B

Rationale: The correct answer is B, Widening pulse pressure. This indicates increasing intracranial pressure (ICP) as it signifies a significant difference between systolic and diastolic blood pressure. A widening pulse pressure is a key sign of impending herniation and requires immediate intervention. A: Gradual increase does not provide a clear indication of acute changes in ICP. C: Rapid drop followed by gradual increase may suggest other conditions and is not specific to increasing ICP. D: Rapid fluctuations may occur in various scenarios and do not specifically point to increasing ICP. In summary, a widening pulse pressure is the most critical and specific indicator of increasing ICP among the choices provided.

Correct Answer: B

Rationale: The correct answer is B because in a normal Rinne test, air conduction is heard longer than bone conduction in both ears. This is due to the fact that air conduction involves the transmission of sound waves through the external auditory canal, middle ear, and inner ear, which is more efficient than bone conduction where the sound waves are transmitted directly to the inner ear through the bones of the skull. Therefore, when the tuning fork is placed on the mastoid bone (bone conduction) and then moved next to the ear (air conduction), the sound should be heard longer through air conduction. Choice A is incorrect because normal auditory acuity does not necessarily mean equal perception in both ears. Choice C is incorrect as bone conduction should be heard shorter than air conduction in a normal Rinne test. Choice D is incorrect as the test does not determine which ear perceives sound better, but rather the difference in duration between air and bone conduction.