ATI LPN
Brunner & Suddarth's Textbook of Medical-Surgical Nursing 14e (Hinkle 2017)
Chapter 20 : Assessment of Respiratory Function Questions
Question 1 of 5
A nurse educator is reviewing the implications of the oxyhemoglobin dissociation curve with regard to the case of a current patient. The patient currently has normal hemoglobin levels, but significantly decreased SaO2 and PaO2 levels. What is an implication of this physiological state?
Correct Answer: A
Rationale: With a normal hemoglobin level of 15 mg/dL and a PaO2 level of 40 mm Hg (SaO2 75%), there is adequate oxygen available for the tissues, but no reserve for physiological stresses that increase tissue oxygen demand. If a serious incident occurs (e.g., bronchospasm, aspiration, hypotension, or cardiac dysrhythmias) that reduces the intake of oxygen from the lungs, tissue hypoxia results.
Question 2 of 5
A medical patient rings her call bell and expresses alarm to the nurse, stating, Ive just coughed up this blood. That cant be good, can it? How can the nurse best determine whether the source of the blood was the patients lungs?
Correct Answer: B
Rationale: Though not definitive, blood from the lung is usually bright red, frothy, and mixed with sputum. Testing the pH of nonarterial blood samples is not common practice and would not provide important data. Similarly, oral suctioning and swabbing the patients mouth would not reveal the source.
Question 3 of 5
The nurse is completing a patients health history with regard to potential risk factors for lung disease. What interview question addresses the most significant risk factor for respiratory diseases?
Correct Answer: C
Rationale: Smoking is the single most important contributor to lung disease, exceeding the significance of environmental, occupational, and genetic factors.
Question 4 of 5
A patient on the medical unit has told the nurse that he is experiencing significant dyspnea, despite that he has not recently performed any physical activity. What assessment question should the nurse ask the patient while preparing to perform a physical assessment?
Correct Answer: A
Rationale: Gauging the severity of the patients dyspnea is an important part of the nursing process. Oral intake and nausea are much less important considerations. The nurse must perform assessment prior to interventions such as providing medication.
Question 5 of 5
The nurse has assessed a patients family history for three generations. The presence of which respiratory disease would justify this type of assessment?
Correct Answer: A
Rationale: Asthma is a respiratory illness that has genetic factors. Sleep apnea, pneumonia, and pulmonary edema lack genetic risk factors.