HESI LPN
CAT Exam Practice Test
1. Which type of Leukocyte is involved with allergic responses and the destruction of parasitic worms?
- A. Neutrophils
- B. Lymphocytes
- C. Eosinophils
- D. Monocytes
Correct answer: C
Rationale: Eosinophils are the correct answer. Eosinophils are specialized white blood cells that play a crucial role in allergic responses and combating parasitic infections. They release substances to destroy parasites and modulate allergic reactions. Neutrophils (Choice A) are mainly involved in fighting bacterial infections. Lymphocytes (Choice B) play a key role in the immune response, including antibody production, but are not primarily responsible for combating parasites or allergic responses. Monocytes (Choice D) are involved in immune defense, differentiating into macrophages or dendritic cells, but they are not mainly associated with allergic responses or parasitic worm destruction.
2. Following rectal surgery, a female client is very anxious about the pain she may experience during defecation. The nurse should collaborate with the healthcare provider to administer which type of medication?
- A. Bulk-forming agent
- B. Antianxiety agent
- C. Stool softener
- D. Stimulant cathartic
Correct answer: C
Rationale: After rectal surgery, a stool softener is the most appropriate medication to help prevent pain and straining during defecation. Stool softeners work by increasing the water content of the stool, making it easier to pass without discomfort. Bulk-forming agents (Choice A) help add mass to the stool but may not address the immediate post-operative discomfort. Antianxiety agents (Choice B) would address the anxiety but not the physical discomfort. Stimulant cathartics (Choice D) are not recommended after rectal surgery as they can cause cramping and increased bowel movements, potentially exacerbating pain.
3. While eating at a restaurant, a gravid woman begins to choke and is unable to speak. What action should the nurse who witnesses the event take?
- A. Cardiopulmonary resuscitation with uterine tilt
- B. The Heimlich maneuver using chest thrusts
- C. The Heimlich maneuver using subdiaphragmatic thrusts
- D. Call 911 immediately then begin cardiopulmonary resuscitation
Correct answer: C
Rationale: The correct action for the nurse to take when a pregnant woman is choking and unable to speak is to perform the Heimlich maneuver using subdiaphragmatic thrusts. This technique is recommended for a pregnant woman to prevent harm to the fetus. Option A, cardiopulmonary resuscitation with uterine tilt, is not indicated for a choking episode. Option B, the Heimlich maneuver using chest thrusts, can potentially harm the gravid uterus. Option D, calling 911 immediately before providing assistance, can lead to a delay in addressing the immediate choking emergency.
4. 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.
5. The nurse is obtaining the medical histories of new clients at a community-based primary care clinic. Which individual has the highest risk for experiencing elder abuse?
- A. A 69-year-old widowed female who lives alone and volunteers at a school
- B. A 95-year-old ambulatory male who resides in a nursing home in a small town
- C. A 78-year-old female on a fixed income who lives with her relatives
- D. An 81-year-old male with diabetes who lives with his wife of 52 years
Correct answer: C
Rationale: Elder abuse risk is higher in individuals who live with relatives and are on a fixed income as these factors can contribute to vulnerability. Living with relatives may expose the individual to potential abusive situations within the family dynamics. Additionally, being on a fixed income may limit financial independence and increase dependency on others, potentially leading to financial abuse. The other options, such as living alone and volunteering, residing in a nursing home, or living with a long-term spouse, do not inherently pose the same level of risk factors for elder abuse as living with relatives on a fixed income.
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