which of the following can cause a low pulse oximetry reading
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Nursing Elites

ATI LPN

PN ATI Capstone Proctored Comprehensive Assessment 2020 A with NGN

1. What can cause a low pulse oximetry reading?

Correct answer: C

Rationale: Inadequate peripheral circulation can cause a low pulse oximetry reading by limiting blood flow to the area being measured, leading to inaccurate oxygen saturation readings. Hyperthermia (choice A) is an elevated body temperature and does not directly affect pulse oximetry readings. An increased hemoglobin level (choice B) would actually lead to higher oxygen-carrying capacity in the blood, resulting in normal or increased pulse oximetry readings. Low altitudes (choice D) typically do not cause low pulse oximetry readings unless there are other underlying conditions affecting oxygen levels.

2. While caring for a client in active labor, a nurse notes late decelerations in the FHR on the external fetal monitor. Which of the following actions should the nurse take first?

Correct answer: A

Rationale: The correct initial action for the nurse to take is to change the client's position. This intervention can alleviate pressure on the umbilical cord, potentially improving fetal oxygenation and addressing the underlying cause of late decelerations. Palpating the uterus to assess for tachysystole or increasing the IV infusion rate are not the first-line interventions for addressing late decelerations. Administering oxygen at a high flow rate via a nonrebreather mask may be necessary but is not the priority action in this situation.

3. A nurse is reviewing the medication metformin with a client who has diabetes. Which of the following side effects should the nurse discuss?

Correct answer: A

Rationale: The correct answer is A: Gastrointestinal upset. Metformin can cause gastrointestinal upset, especially when first starting therapy. It is important to take it with food to reduce these effects. Increased appetite (choice B) and weight loss (choice C) are not common side effects of metformin but may occur due to improved blood sugar control. Frequent urination (choice D) is a symptom of uncontrolled diabetes and not a side effect of metformin.

4. A nurse is caring for a client prescribed sildenafil for erectile dysfunction. Which of the following should the nurse monitor?

Correct answer: A

Rationale: The correct answer is A: Blood pressure. Sildenafil, a medication for erectile dysfunction, can cause changes in blood pressure. The nurse should monitor for hypotension as a potential side effect. Monitoring heart rate (choice B) is not a priority when administering sildenafil unless there are pre-existing heart conditions. Temperature (choice C) and respiratory rate (choice D) are typically not directly affected by sildenafil administration, making them less relevant for monitoring in this case.

5. A postpartum client's fundus is firm, 3 cm above the umbilicus, and displaced to the right. Which of the following interventions should the nurse take?

Correct answer: C

Rationale: The correct intervention for a postpartum client with a firm, displaced fundus is to assist the client to void then reassess the fundus. Displacement of the uterus to the right is often a sign of bladder distention, which can prevent the uterus from contracting properly and increase the risk of postpartum hemorrhage. By helping the client to void, the nurse can alleviate the bladder distention, allowing the uterus to contract effectively. Massaging the fundus (Choice A) may not address the underlying issue of bladder distention. Administering oxytocin (Choice B) is not indicated without assessing and addressing the cause of the displacement. Notifying the healthcare provider (Choice D) is premature before implementing initial nursing interventions to address the potential cause of the displaced fundus.

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