ATI RN
Questions and Answers on Respiratory System Questions
Question 1 of 5
Following assessment of a patient with pneumonia, the nurse identifies a nursing diagnosis of impaired gas exchange based on which finding?
Correct Answer: A
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
Question 2 of 5
Partial pressure of Oxygen in the inspired and expired air is respectively
Correct Answer: B
Rationale: The correct answer is B (158 and 40 mm Hg) because the partial pressure of oxygen in inspired air is approximately 158 mm Hg, while in expired air it decreases to around 40 mm Hg due to oxygen being taken up by the body tissues for metabolism. Choice A (158 and 116 mm Hg) is incorrect because expired air has a lower partial pressure of oxygen than inspired air. Choice C (100 and 95 mm Hg) is incorrect as it does not reflect the significant decrease in oxygen partial pressure from inspired to expired air. Choice D (40 and 95 mm Hg) is incorrect as it has the values reversed, with expired air having a higher partial pressure of oxygen than inspired air, which is not physiologically accurate.
Question 3 of 5
Foetal hemoglobin has a Sigmoid dissociation curve which is shifted to left relative to adult Hb because
Correct Answer: B
Rationale: The correct answer is B because foetal Hb has a lower P50 (18-20 mm Hg) than adult Hb (26.6 mm Hg). A lower P50 indicates higher oxygen affinity, allowing foetal Hb to bind oxygen more readily at lower partial pressures. This shift to the left of the dissociation curve ensures efficient oxygen transfer from the maternal bloodstream to the foetus. Choices A, C, and D are incorrect because foetal Hb having a higher P50 (A), readily accepting oxygen (C), or easily removing carbon dioxide (D) would not explain the left shift in the dissociation curve.
Question 4 of 5
Tachypnoea means
Correct Answer: A
Rationale: The correct answer is A: Rapid shallow breathing. Tachypnoea refers to an increased respiratory rate, which can lead to shallow breathing. Rapid breathing helps to compensate for inadequate oxygen levels. Choice B is incorrect because tachypnoea is not typically associated with deep breathing. Choices C and D are incorrect as they describe slow breathing patterns, which are opposite to tachypnoea.
Question 5 of 5
While assessing a patient who has pneumonia, the nurse has the patient repeat the letter E while the nurse auscultates. The nurse notes that the patient's voice sounds are distorted and that the letter A is audible instead of the letter E. How should this finding be documented?
Correct Answer: B
Rationale: The correct answer is B: Egophony. Egophony is a lung sound in which the spoken "E" sound changes to a loud, nasal "A" sound when auscultated, indicating consolidation in the lungs, such as in pneumonia. This finding should be documented as egophony because it specifically describes the distortion of voice sounds during auscultation related to lung pathology. A: Bronchophony refers to increased clarity and loudness of spoken sounds during auscultation and is not specific to the distortion of the voice sounds as in the given scenario. C: Whispered pectoriloquy describes whispered sounds being heard clearly during auscultation, which is different from the scenario presented. D: Sonorous wheezes are continuous low-pitched wheezing sounds heard with inspiration or expiration, not related to the distortion of voice sounds as in egophony.