Correct Answer: D

Rationale: The correct answer is D. Chest pain radiating to the left arm can be a sign of myocardial infarction (heart attack) and requires immediate intervention. This symptom is known as a classic presentation of a heart attack and warrants urgent medical attention to prevent further cardiac damage. Choices A, B, and C are not directly indicative of an acute cardiac event and may not require immediate intervention in this scenario. While heart rate, blood pressure, and respiratory rate are important vital signs to monitor, they do not specifically indicate the urgency associated with chest pain radiating to the left arm in a patient with a history of coronary artery disease.

Correct Answer: C

Rationale: Opening the client's airway immediately is the priority in this scenario. Ensuring the airway is clear takes precedence over other actions as it is crucial for the client's breathing and oxygenation. Logrolling the client to assess for back injuries may worsen the condition if there are spinal injuries, so this should not be done as the first step. Performing a complete neurological assessment is important but not the immediate priority over ensuring the airway is clear. Placing the nurse's hands around the client's neck to stabilize is incorrect and could potentially harm the client, as neck stabilization should only be done if there is a suspected neck injury, which is not indicated in this case.

Correct Answer: C

Rationale: The correct answer is C. Sudden severe abdominal pain is a key clinical manifestation of a perforated ulcer. The sudden onset of severe pain is concerning for a perforation in the ulcer, which can lead to peritonitis if not promptly addressed. Choices A, B, and D are incorrect because hyperactive bowel sounds, a soft and nondistended abdomen, and a blood pressure of 110/70 mm Hg are not specific indicators of a perforated ulcer. Hyperactive bowel sounds may suggest increased gastrointestinal motility, a soft abdomen may not necessarily indicate a perforation, and a blood pressure of 110/70 mm Hg is within normal limits and does not directly relate to a perforated ulcer.

Correct Answer: D

Rationale: The correct answer is D: Serum sodium of 130 mEq/L. In SIADH, there is excess release of antidiuretic hormone leading to water retention and dilutional hyponatremia. A serum sodium level of 130 mEq/L indicates severe hyponatremia, which can result in neurological symptoms, such as confusion, seizures, and coma. Therefore, immediate intervention is required to prevent further complications. Choice A, a serum sodium of 140 mEq/L, is within the normal range and does not require immediate intervention. Choice B, serum potassium of 4.5 mEq/L, is also within the normal range and is not directly related to SIADH. Choice C, serum osmolality of 280 mOsm/kg, is a measure of the concentration of solutes in the blood and may not be the most critical parameter to address in a client with SIADH and severe hyponatremia.

Correct Answer: C

Rationale: The correct action for the nurse to take first after an elderly client with disabilities slips and falls is to check the client for lacerations or fractures. This is crucial to assess the extent of injuries and provide appropriate medical attention promptly. Option A, providing orange juice, is not a priority in this situation and does not address the potential injuries. While calling 911 (Option B) may be necessary, assessing for immediate injuries takes precedence. Assessing the client's blood sugar level (Option D) is not the immediate priority after a fall unless there is a specific indication or suspicion of hypoglycemia.