ATI RN
Questions About the Respiratory System With Answers Questions
Question 1 of 5
Adult lung consist of approximately ......million alveoli
Correct Answer: A
Rationale: The correct answer is A: 500 million alveoli. The adult lung consists of approximately 300 million alveoli at birth, with an additional 200 million alveoli developing postnatally. This total of 500 million alveoli maximizes the surface area for efficient gas exchange in the lungs. Therefore, choice A is correct. Choices B, C, and D are incorrect because they do not accurately represent the estimated number of alveoli in the adult lung based on scientific research and anatomical studies.
Question 2 of 5
The nurse is educating a patient who requires daily postural drainage treatments. Which statement indicates that the patient understands when and why treatments will be scheduled?
Correct Answer: A
Rationale: Rationale for Correct Answer (A): - Postural drainage treatments are most effective in the morning to clear the lungs of accumulated secretions. - Performing treatments first thing in the morning can help mobilize and expel fluids that have accumulated overnight. - This timing aligns with the natural process of the body clearing secretions upon waking up. Summary of Incorrect Choices: B: Having treatments after breakfast does not align with the optimal timing for postural drainage. C: Having treatments after lunch does not relate to the ideal timing for postural drainage treatments. D: Having treatments right before bed is not ideal as the patient may not benefit as much compared to morning sessions.
Question 3 of 5
The nurse is reviewing the laboratory test results for a client who has recently been diagnosed with hypertension. Which result is most important to communicate to the health care provider?
Correct Answer: D
Rationale: The correct answer is D: Serum creatinine of 2.8 mg/dL. Elevated serum creatinine levels indicate impaired kidney function, which is a common complication of hypertension. Communicating this result to the healthcare provider is crucial as it may indicate renal damage and the need for further evaluation and intervention. A: Serum potassium of 4.5 mEq/L is within the normal range and not directly related to hypertension. B: Serum hemoglobin of 14.7 g/dL is also within the normal range and not a priority in this scenario. C: Blood urea nitrogen of 5 is within the normal range and not as concerning as an elevated creatinine level in the context of hypertension. In summary, the elevated serum creatinine level is most important to communicate as it suggests potential renal damage, which is a serious complication of hypertension.
Question 4 of 5
Which sign would indicate possible heart failure in a client with heart disease in the immediate postoperative period?
Correct Answer: A
Rationale: The correct answer is A: Tachypnea. In the immediate postoperative period, tachypnea in a client with heart disease could indicate possible heart failure. Tachypnea is a common sign of heart failure as the heart struggles to pump effectively, leading to increased respiratory rate to compensate. Bradycardia (B) is a slow heart rate, which is not typically associated with heart failure. Hypotension (C) is low blood pressure, which can be a sign of shock but not specific to heart failure. Increased wound bleeding (D) may indicate issues with clotting or surgical complications, but it is not directly related to heart failure.
Question 5 of 5
All of these statements about surfactant are true except
Correct Answer: C
Rationale: Rationale: C is incorrect because according to Laplace's law, smaller alveoli have higher surface tension than larger alveoli. A is correct as surfactants stabilize alveoli. B is true as surfactants reduce surface tension. D is also true as surfactants help prevent fluid leakage. So, C is the exception.