RES 204 Exam/Unit 2 Questions With Complete Solutions

In which of the following conditions would an increased DLCO be expected? 1. Pulmonary hemorrhage 2. Sarcoidosis 3. Pneumonectomy 4. Polycythemia a. 1 and 3 b. 1 and 4 c. 2 and 3 d. 2 and 4 correct answer: 1 and 4 Pulmonary hemorrhage Polycythemia Which of the following lung volumes cannot be directly measured with spirometry? correct answer: Functional Residual Capacity This molecule is one of the body's defense mechanisms to fight invading organisms such as bacteria. correct answer: nitric oxide N2 concentration has decreased to less than 1 1.2% for at least three consecutive breaths this means correct answer: Standardizing the measurement of lung volumes, the N2 washout test is considered complete Examples of patients having early onset of airway closure include. correct answer: heavy smokers in middle age elderly patients congestive heart failure that exhibits pulmonary edema For a healthy young person, a normal closing volume would be: correct answer: 80-90% of VC An interruption in the supply of methacholine for bronchoprovocation agent results in your lab switching to histamine, What impact will this be on the patients? correct answer: some patients may show a false negative reaction and have their asthma diagnosis missed. There will be less accumulation of histamine than with methacholine. The recovery time is quicker than methacholine. Side effects include flushing and headache. A closing volume test is attempting to measure. correct answer: where small airways begin to collapse at the end of exhalation. Indications for ordering a bronchoprovocation test include to. correct answer: -quantify the degree of a patient's airway hyperreactivity -gather PFT data to determine if a patient has undiagnosed airway hyperactivity -rule out hyperreactivity as a source of the patient's shortness of breath with exercise A patient with an FEV1 of 1.24 L and an FVC of 3.10 L performs the FRCHe test. The He concentration between 6 and 6.5 minutes changed by 0.1%, and between 7 and 7.5 minutes changed by 0.08%. The technician correctly concludes equilibration has not been reached. The most likely explanati