ATI RN
Questions About the Respiratory System Questions
Question 1 of 5
A client has returned to the coronary care unit after having a coronary angiogram. Which assessment data indicate the need for immediate action by the nurse?
Correct Answer: A
Rationale: The correct answer is A: Diminished pedal pulse volume. This indicates potential circulation compromise, which can lead to ischemia or impaired tissue perfusion. Immediate action is required to prevent further complications. B: Heart rate 100 beats/min is within normal range. C: Blood pressure 104/60 mm Hg is slightly low but not critically concerning. D: Capillary refill less than 3 seconds indicates good peripheral perfusion.
Question 2 of 5
Which of the following substances is activated by passage through the pulmonary circulation?
Correct Answer: D
Rationale: The correct answer is D: Angiotensin 1. When blood passes through the pulmonary circulation, angiotensinogen is converted into angiotensin 1 by the enzyme renin. This activation occurs in the lungs. Bradykinin, serotonin, and noradrenaline are not activated in the pulmonary circulation. Bradykinin is a peptide released during inflammation, serotonin is a neurotransmitter, and noradrenaline is a neurotransmitter and hormone. Therefore, D is the only substance activated by passage through the pulmonary circulation.
Question 3 of 5
A male adult patient hospitalized for treatment of a pulmonary embolism develops respiratory alkalosis. Which clinical findings commonly accompany respiratory alkalosis?
Correct Answer: D
Rationale: The correct answer is D: Lightheadedness or paresthesia. Respiratory alkalosis is caused by hyperventilation, leading to decreased carbon dioxide levels and an increase in pH. This can result in symptoms such as lightheadedness (from decreased cerebral blood flow) and paresthesia (tingling sensations due to changes in calcium ionization). Choices A, B, and C are incorrect as they are not typically associated with respiratory alkalosis. Nausea, vomiting, abdominal pain, and diarrhea are more commonly seen in metabolic alkalosis, while hallucinations and tinnitus are not typical symptoms of respiratory alkalosis.
Question 4 of 5
A nurse is caring for a male client with emphysema who is receiving oxygen. The nurse assesses the oxygen flow rate to ensure that it does not exceed:
Correct Answer: B
Rationale: The correct answer is B: 2 L/min. The rationale is that in emphysema, high oxygen flow rates can cause oxygen toxicity. The recommended maximum flow rate for patients with emphysema is typically 2 L/min to prevent oxygen toxicity. Choice A (1 L/min) may not provide sufficient oxygen, choice C (6 L/min) and choice D (10 L/min) are too high and can lead to oxygen toxicity in patients with emphysema. Therefore, choice B is the most appropriate and safe option for this client.
Question 5 of 5
A client who is human immunodeficiency virus-positive has had a Mantoux skin test. The nurse notes a 7-mm area of induration at the site of the skin test. The nurse interprets the results as:
Correct Answer: A
Rationale: The correct answer is A: Positive. In individuals with HIV, a positive Mantoux test is considered when the induration is 5 mm or greater. A 7-mm area of induration indicates a positive result, suggesting an immune response to the tuberculin antigen, potentially due to latent tuberculosis infection. The other choices are incorrect because a 7-mm induration in an HIV-positive client is not considered negative, inconclusive, or indicative of the need for repeat testing based on current guidelines.