HESI Medical Surgical Exam

Correct Answer: B

Rationale: The correct answer is B: Pain. Pain is a common and significant symptom of Herpes Zoster (shingles) that can result in difficulty sleeping. The pain associated with shingles can be intense and persistent, making it challenging for the client to find a comfortable position to sleep. Nocturia (choice C), which is excessive urination during the night, is not directly related to difficulty sleeping in this context. While both frequent cough (choice A) and dyspnea (choice D) can cause sleep disturbances, in a client with Herpes Zoster on the thorax, pain is the most probable cause of sleep difficulty.

Correct Answer: A

Rationale: The correct answer is A: Showing the location of the obstruction and the collateral circulation. An arteriogram is a diagnostic procedure that involves injecting a contrast agent to visualize the blood vessels and identify the location of any obstructions. This helps confirm the diagnosis of occlusive arterial disease by showing where the blockage is located and how collateral circulation is compensating for the reduced blood flow. Choices B, C, and D are incorrect because scanning the extremity, estimating velocity changes with ultrasound, or determining walking distance are not the primary purposes of an arteriogram in diagnosing occlusive arterial disease.

Correct Answer: B

Rationale: In patients with COPD, oxygen therapy can reduce the hypoxic drive, which is the primary stimulus for breathing in these individuals. By providing supplemental oxygen, the hypoxic drive is diminished, resulting in decreased respiratory effort. As a consequence, the PaO2 may increase due to the supplemental oxygen, but this can lead to a decrease in the respiratory drive and subsequent retention of carbon dioxide, causing an increase in PaCO2 levels. Option A is incorrect because rapid respirations would typically lower PaCO2 levels. Option C is incorrect as a pneumothorax would lead to impaired gas exchange and decreased PaO2 levels without necessarily affecting PaCO2 levels. Option D is incorrect as a pulmonary embolism would typically result in ventilation-perfusion mismatch and decreased PaO2 levels without directly impacting PaCO2 levels.

Correct Answer: C

Rationale: The priority nursing action for a client diagnosed with acute pyelonephritis is to administer IV antibiotics as prescribed. Acute pyelonephritis is a serious kidney infection that requires prompt antibiotic therapy to prevent systemic complications and worsening of the infection. While monitoring hemoglobin and hematocrit (Choice A) is important, it is not the priority in the acute phase of infection. Encouraging turning and deep breathing (Choice B) and auscultating for bowel sounds (Choice D) are relevant aspects of care but do not take precedence over initiating antibiotic treatment to address the infection promptly.

Correct Answer: A

Rationale: A serum sodium level of 185 mEq/L (185 mmol/L) is dangerously high and indicates severe dehydration, requiring immediate intervention to prevent neurological damage. The other options are not as critical as high serum sodium levels, which can lead to serious complications such as seizures, coma, and death if not promptly addressed. Dry skin with poor skin turgor and polyuria with excessive thirst are common findings in clients with Diabetes Insipidus and should be managed but do not pose an immediate threat to the client's life. An apical heart rate of 110 beats per minute may indicate tachycardia, which could be related to dehydration but is not as urgent as addressing the severe hypernatremia.