CERTIFIED RESPIRATORY THERAPIST EXAM 3-8 100 QUESTIONS AND ANSWERS RATED A+ WITH COMPLETE SOLUTIONS

CERTIFIED RESPIRATORY THERAPIST EXAM 3-8 100 QUESTIONS AND ANSWERS RATED A+ WITH COMPLETE SOLUTIONS Assessment of a 28-year-old trauma patient reveals diminished breath sounds, asymmetrical chest expansion, severe chest pain, and an SpO2 of 90%, despite receiving oxygen via cannula at 5 L/min. These findings are most consistent with what diagnosis? - B). Pneumothorax Both viral pneumonia and pleural effusion can be ruled out as correct answers as they are related to trauma. Breath sounds, though diminished, can be heard, and chest expansion, though asymmetrical, is present; both of these are not consistent with a complete airway obstruction. The physical assessment is consistent with the correct answer, pneumothorax. A 23-year-old firefighter is admitted with suspected smoke inhalation. You place him on a nonrebreathing mask. What is the most appropriate method of monitoring his oxygenation? - B). CO-oximetry In the case of smoke inhalation, carbon monoxide (CO) binds to the hemoglobin molecule in place of oxygen. Neither ABGs, pulse oximetry, or calculation of A-a gradient will indicate how much oxygen is bound to hemoglobin. Any victim of suspected smoke inhalation must be monitored with CO-oximetry. The ratio of lecithin to sphingomyelin, or L/S ratio, is a test to determine fetal lung maturity. Such a test may be done in the later stages of pregnancy, and the values will initially be noted in the lab results section of the mother's medical record. Approximately what ratio is associated with the onset of mature surfactant production? - A). 2:1 The lecithin to sphingpmyelin ratio, or L/S ratio, is used to determine fetal lung maturity. Generally, this ratio reaches 2:1 (twice as much lecithin as sphingomyelin) near week 35 of gestation, which corresponds to the onset of mature surfactant production. The L/S ratio will generally be noted in the lab results section of the mother's medical record. Sputum culture and sensitivity would be indicated in the evaluation of which of the following clinical conditions? - B). Bacterial pneumonia Sputum culture and sensitivity are used to identify microorganisms and their most appropriate drug therapy. Bacterial pneumonia is the obvious infectious process in the choice of answers. You measure an oxygen concentration of 55% being delivered by an air-entrainment mask set to deliver 31% oxygen. - C). Check the entrainment ports.