A 35-year-old, 54 kg woman with congestive heart failure enters the emergency department short of breath. An ABG shows the following results:pH 7.50, PaCO2 30 mm Hg, HCO3– 23 mEq/L, base excess +2 mEq/LThe patient’s ABG results indicate which of the following?
Read DetailsA 42-year-old male patient with a history of poorly controlled asthma is seen in the emergency department by the respiratory therapist (RT). The patient is seated in a chair and clearly is in extreme respiratory distress, with inspiratory and expiratory wheezing throughout. He reports that he has had a fever for the past 2 days and has eaten and drunk very little. He also reports some chest pain, and his blood pressure is 95/55 mm Hg. At one point, the patient stands to move from the chair to the stretcher and has an episode of syncope. The differential diagnosis for this patient should include which of the following?1. Myocardial infarction (MI)2. Acute asthma exacerbation3. Dehydration4. Cerebrovascular accident (CVA; stroke)
Read DetailsYou’re trying to ride through a concrete banked curve while testing out a bike. You estimate that the curve is banked 30o above the horizontal and the radius of curvature is meters. What is the constant velocity (in m/s) that you should ride through the curve without having to worry about the static friction between your tires and the concrete? (Remember to estimate g as 10 m/s2)
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