Correct Answer: B

Rationale: The correct answer is B. A bivalve cast can help decrease the risk of compartment syndrome by providing space for swelling, thus preventing the build-up of pressure within the muscles. Choices A, C, and D are incorrect because they are not directly related to preventing compartment syndrome. Choice A is more focused on managing heart failure, choice C on reducing intracranial pressure, and choice D on restoring intrathoracic pressure after a pneumothorax, which are not relevant to preventing compartment syndrome.

Correct Answer: B

Rationale: The correct answer is to identify the medication name and dosage administered to the client in the incident report. This information is crucial for accurate documentation and investigation of the medication error. Choice A is incorrect because incident reports are usually kept confidential and not for personal keeping. Choice C is incorrect as obtaining an order from the client's provider is not necessary to complete an incident report. Choice D, while important, is not the only essential information needed for the incident report.

Correct Answer: A

Rationale: In diabetic ketoacidosis (DKA), as the condition progresses, the body tries to compensate for the acidic environment by increasing the respiratory rate, leading to Kussmaul's respirations. The accumulation of ketones in the body causes a fruity odor on the breath. Option A is correct because Kussmaul's respirations and a fruity odor on the breath are classic signs of DKA. Option B is incorrect because shallow respirations are not typically seen in DKA, and severe abdominal pain is more commonly associated with conditions like pancreatitis. Option C is incorrect as decreased respirations are not a typical finding in DKA, and increased urine output is more commonly seen in conditions like diabetes insipidus. Option D is incorrect because Cheyne-Stokes respirations are not characteristic of DKA, and foul-smelling urine is not a prominent symptom in this condition.

Correct Answer: B

Rationale: Rotating injection sites when administering insulin helps prevent insulin lipodystrophy, which is the abnormal distribution of fat at injection sites. Insulin edema (choice A) is not prevented by rotating injection sites; it is characterized by swelling at the site of insulin injection due to increased capillary permeability. Insulin resistance (choice C) is a condition where the body's cells become less responsive to insulin, and rotating injection sites does not directly prevent this. Systemic allergic reactions (choice D) are not specifically prevented by rotating injection sites; they are related to an allergic response to insulin.

Correct Answer: A

Rationale: The correct answer is A: 1 in 85 births. The rate of twin pregnancies is approximately 1 in 85 births. This means that twins are more common compared to triplets, which occur at a rate of 1 in 8,100 births. Choices B, C, and D are incorrect because they do not reflect the correct frequency of twin pregnancies as stated in the question.