Assessment of Respiratory Function Test Bank Answers

Assessment of Respiratory Function 1. A patient is having her tonsils removed. The patient asks the nurse what function the tonsils normally serve. Which of the following would be the most accurate response? A) The tonsils separate your windpipe from your throat when you swallow. B) The tonsils help to guard the body from invasion of organisms. C) The tonsils make enzymes that you swallow and which aid with digestion. D) The tonsils help with regulating the airflow down into your lungs. Ans: B Feedback: The tonsils, the adenoids, and other lymphoid tissue encircle the throat. These structures are important links in the chain of lymph nodes guarding the body from invasion of organisms entering the nose and throat. The tonsils do not aid digestion, separate the trachea from the esophagus, or regulate airflow to the bronchi. 2. The nurse is caring for a patient who has just returned to the unit after a colon resection. The patient is showing signs of hypoxia. The nurse knows that this is probably caused by what? A) Nitrogen narcosis B) Infection C) Impaired diffusion D) Shunting Ans: D Feedback: Shunting appears to be the main cause of hypoxia after thoracic or abdominal surgery and most types of respiratory failure. Impairment of normal diffusion is a less common cause. Infection would not likely be present at this early stage of recovery and nitrogen narcosis only occurs from breathing compressed air. 3. The nurse is assessing a patient who frequently coughs after eating or drinking. How should the nurse best follow up this assessment finding? A) Obtain a sputum sample. B) Perform a swallowing assessment. C) Inspect the patients tongue and mouth. D) Assess the patients nutritional status. Ans: B Feedback: Coughing after food intake may indicate aspiration of material into the tracheobronchial tree; a swallowing assessment is thus indicated. Obtaining a sputum sample is relevant in cases of suspected infection. The status of the patients tongue, mouth, and nutrition is not directly relevant to the problem of aspiration. 4. The ED nurse is assessing a patient complaining of dyspnea. The nurse auscultates the patients chest and hears wheezing throughout the lung fields. What might this indicate? A) The patient has a narrowed airway. B) The patient has pneumonia. C) The patient needs physiotherapy. D) The patient has a hemothorax. Ans: A Feedback: Wheezing is a high-pitched, musical sound that is often the major finding in a patient with bronchoconstriction or airway narrowing. Wheezing is not normally indicative of pneumonia or hemothorax. Wheezing does not indicate the need for physiotherapy. 5. The nurse is caring for a patient admitted with an acute exacerbation of chronic obstructive pulmonary disease. During assessment, the nurse finds that the patient is experiencing increased dyspnea. What is the most accurate measurement of the concentration of oxygen in the patients blood? A) A capillary blood sample By Pulse oximetry C) pH balance in the pulmonary veins and arteries D) Adequate flow of blood through the pulmonary circulation. Ans: D Feedback: Pulmonary perfusion is the actual blood flow through the pulmonary circulation. Perfusion is not defined in terms of pH balance, muscle tone, or osmotic pressure. 23. The nurse is performing a respiratory assessment of an adult patient and is attempting to distinguish between vesicular, bronchovesicular, and bronchial (tubular) breath sounds. The nurse should distinguish between these normal breath sounds on what basis? A) Their location over a specific area of the lung B) The volume of the sounds C) Whether they are heard on inspiration or expiration Whether or not they are continuous breath sounds D) Ans: A Feedback: Normal breath sounds are distinguished by their location over a specific area of the lung; they are identified as vesicular, bronchovesicular, and bronchial (tubular) breath sounds. Normal breath sounds are heard on both inspiration and expiration, and are continuous. They are not distinguished solely on the basis of volume. 24. A patient has been diagnosed with pulmonary hypertension, in which the capillaries in the alveoli are squeezed excessively. The nurse should recognize a disturbance in what aspect of normal respiratory function? A) Acidbase balance B) Perfusion C) Diffusion D) Ventilation Ans: B Feedback: Perfusion is influenced by alveolar pressure. The pulmonary capillaries are sandwiched between. adjacent alveoli and, if the alveolar pressure is sufficiently high, the capillaries are squeezed. This does not constitute a disturbance in ventilation (air movement), diffusion (gas exchange), or acidbase balance. 25. A patient is scheduled to have excess pleural fluid aspirated with a needle in order to relieve her dyspnea. The patient inquires about the normal function of pleural fluid. What should the nurse describe? A) It allows for full expansion of the lungs within the thoracic cavity. BY It prevents the lungs from collapsing within the thoracic cavity. C) It limits lung expansion within the thoracic cavity. D) It lubricates the movement of the thorax and lungs. Ans: D Feedback: The visceral pleura cover the lungs, the parietal pleura line the thorax. The visceral and parietal pleura and the small amount of pleural fluid between these two membranes serve to lubricate the thorax and lungs and permit smooth motion of the lungs within the thoracic cavity with each breath. The pleura do not allow full expansion of the lungs, prevent the lungs from collapsing, or limit lung expansion within the thoracic cavity. 26. The nurse is caring for a patient with a lower respiratory tract infection. When planning a focused respiratory assessment, the nurse should know that this type of infection most often causes what? A) Impaired gas exchange B) Collapsed bronchial structures C) Necrosis of the alveoli D) Closed bronchial tree Ans: A Feedback: The lower respiratory tract consists of the lungs, which contain the bronchial and alveolar structures needed for gas exchange. A lower respiratory tract infection does not collapse bronchial structures or close the bronchial tree. An infection does not cause necrosis of lung tissues. 27. The nurse is performing a respiratory assessment of a patient who has been experiencing episodes of hypoxia. The nurse is aware that this is ultimately attributable to impaired gas exchange. On what factor does adequate gas exchange primarily depend? A) An appropriate perfusiondiffusion ratio B) An adequate ventilationperfusion ratio C) Adequate diffusion of gas in shunted blood D) Appropriate blood nitrogen concentration Ans: B Feedback: Adequate gas exchange depends on an adequate ventilationperfusion ratio. There is no perfusiondiffusion ratio. Adequate gas exchange does not depend on the diffusion of gas in shunted blood or a particular concentration of nitrogen. 28. The nurse is caring for a patient with lung metastases who just underwent a mediastinotomy. What should be the focus of the nurses postprocedure care? A) Assisting with pulmonary function testing (PFT) B) Maintaining the patients chest tube C) Administering oral suction as needed D) Performing chest physiotherapy Ans: B Feedback: Chest tube drainage is required after mediastinotomy. PFT, chest physiotherapy, and oral suctioning would all be contraindicated because of the patients unstable health status. 29. The nurse is caring for a patient who has a pleural effusion and who underwent a thoracoscopic procedure earlier in the morning. The nurse should prioritize assessment for which of the following? A) Sputum production