ymptoms.
             5. During preop examination, you patient is SOB at rest with an abnormal ABG. You you grade this patient:
             5. - d. Dyspnea (SOB) reflects an uncomfortable awareness of one's own breathing. Significance depends heavily on the stimulus or amount of activity required to partcipate it. Grade I, pt can walk a distance, but slowly, Grade II, can walk a limited distance before becoming SOB, Grade III, Becomes SOB walking ino a room and may or may not have abnormal ABG's. Grade IV is SOB @ rest with abnormal ABG's. There is no Grade V based on Dr. Vaccihiano's criteria.
             6. The proposed mechanisms of dyspnea/SOB share no common link they are: (1) increased WOB due to Increased Raw, "stiff lungs", (2) abnormal ABG's with ether an Increased PCO2 or decreased PO2, or (3) altered respirato
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