HESI LPN
CAT Exam Practice
1. To differentiate adventitious lung sounds associated with heart failure from those associated with bacterial pneumonia, what information should the nurse review?
- A. Sputum culture findings
- B. Oxygen saturation level
- C. Amount of coughing
- D. Respiratory rate
Correct answer: A
Rationale: The correct answer is A: Sputum culture findings. Reviewing sputum culture findings can provide valuable information to differentiate between bacterial pneumonia and heart failure, as the type of bacteria present in the sputum can help identify the specific infection. Oxygen saturation level (Choice B) is important for assessing oxygenation status but does not directly help in distinguishing between the two conditions based on lung sounds. The amount of coughing (Choice C) and respiratory rate (Choice D) may offer some clinical insights but are not as specific or diagnostic as sputum culture findings when differentiating between heart failure and bacterial pneumonia.
2. During an admission assessment on an HIV positive client diagnosed with Pneumocystis carinii pneumonia (PCP), which symptoms should the nurse carefully observe the client for?
- A. Weight loss exceeding 10 percent of baseline body weight
- B. Altered mental status and tachypnea
- C. Creamy white patches in the oral cavity
- D. Normal ABGs with wet lung sounds in all lung fields
Correct answer: B
Rationale: The correct answer is B: Altered mental status and tachypnea. These symptoms are indicative of PCP and severe HIV progression. Weight loss exceeding 10 percent of baseline body weight (choice A) may be seen in HIV/AIDS but is not specific to PCP. Creamy white patches in the oral cavity (choice C) are characteristic of oral thrush, which is more commonly associated with Candida infections in HIV patients. Normal ABGs with wet lung sounds in all lung fields (choice D) would not be expected with PCP, as it typically presents with hypoxemia and diffuse bilateral infiltrates on chest imaging.
3. The nurse is assessing an infant with pyloric stenosis. Which pathophysiological mechanism is the most likely consequence of this infant’s clinical picture?
- A. Metabolic acidosis
- B. Metabolic alkalosis
- C. Respiratory alkalosis
- D. Respiratory acidosis
Correct answer: B
Rationale: Pyloric stenosis often leads to metabolic alkalosis due to the loss of gastric acid from vomiting. Metabolic acidosis would not be expected in pyloric stenosis as there is no excessive acid accumulation. Respiratory alkalosis and respiratory acidosis are not typically associated with pyloric stenosis, making them incorrect choices.
4. A young adult female presents at the emergency center with acute lower abdominal pain. Which assessment finding is most important for the nurse to report to the healthcare provider?
- A. Pain scale rating of 9 on a 0-10 scale
- B. Last menstrual period was 7 weeks ago
- C. Reports white curdy vaginal discharge
- D. History of irritable bowel syndrome (IBS)
Correct answer: B
Rationale: The correct answer is B. A missed menstrual period could indicate a possible pregnancy-related issue, requiring urgent evaluation. Assessing the menstrual history in a female of reproductive age takes precedence in this scenario. Choice A, the pain scale rating, is important but not as urgent as evaluating the menstrual history. Choice C, reporting white curdy vaginal discharge, may suggest a vaginal infection but is not as critical as ruling out a potential pregnancy. Choice D, the history of irritable bowel syndrome, is relevant but not as crucial as determining pregnancy-related issues in this context.
5. In what order should the nurse perform the steps of a surgical hand scrub prior to entering the operating room?
- A. Rinse from the fingertips to the elbow
- B. Scrape under the nails with a nail pick
- C. Use a soapy brush to scrub the hands
- D. Cleanse the arm with a lathered brush
Correct answer: B
Rationale: The correct order for performing a surgical hand scrub is to first scrape under the nails with a nail pick, then scrub the hands using a soapy brush, cleanse the arms, and finally rinse. This sequence ensures thorough cleaning and minimizes the risk of contamination. Choice A is incorrect because rinsing should be the final step, not the first. Choice C is incorrect as scrubbing the hands comes after scraping under the nails. Choice D is incorrect as cleansing the arms should follow hand scrubbing, not precede it.
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