HESI Medical Surgical Assignment Exam

Correct Answer: A

Rationale: A serum drug trough level below the normal range (1.7 mcg/mL to 2.2 mcg/mL) indicates that the medication concentration is insufficient to provide therapeutic effects, leading to inadequate drug effects. A low trough level does not directly correlate with an increased risk of superinfection, minimal adverse effects, or a slowed onset of action, as these are more related to the drug's concentration within the therapeutic range.

Correct Answer: D

Rationale: The ABG results show a pH above the normal range (7.35-7.45) and a decreased PCO2, indicating respiratory alkalosis. In respiratory alkalosis, the pH is increased and the PCO2 is decreased. Metabolic acidosis (choice A) would present with a low pH and low HCO3 levels. Metabolic alkalosis (choice B) would show an increased pH and HCO3 levels. Respiratory acidosis (choice C) would have a low pH and an increased PCO2.

Correct Answer: C

Rationale: The purpose of the water bottle is to humidify the oxygen that is bypassing the nose during mouth breathing. When a client breathes through the mouth, the oxygen delivered by the face mask bypasses the natural humidification provided by the nasal passages. Therefore, the water bottle attachment helps to add moisture to the oxygen, preventing dryness and irritation to the respiratory tract. Choices A, B, and D are incorrect. Clients breathing through the mouth are not at risk for nosebleeds, do not receive added fluid through the respiratory tree, and do not experience fluid loss from the lungs due to mouth breathing.

Correct Answer: A

Rationale: In this scenario, the priority intervention is to obtain a urine sample for culture and sensitivity. Older adults with recent falls may have atypical symptoms of urinary tract infection (UTI), which can present as new-onset confusion or falling. It is crucial to rule out UTI before initiating antibiotics. While administering antibiotics, encouraging protein intake, fluids, and consulting physical therapy are important interventions, they should follow the urine sample collection to ensure accurate diagnosis and appropriate treatment.

Correct Answer: D

Rationale: Clients with PKD commonly present with flank pain and increased abdominal girth due to abdominal distention caused by cysts. Bloody urine is also a common symptom due to tissue damage from PKD. Nocturia and dysuria are not typical manifestations of PKD. Constipation is not directly associated with PKD. Therefore, the correct choices are flank pain and increased abdominal girth, making option D the correct answer.