Approach to respiratory alkalosis Quiz: Ace Your Exams

Get ready to dominate your medical and nursing exams by using our dynamic quizzes to elevate your knowledge and increase your confidence. Whether you're gearing up for the USMLE®, COMLEX®, or your next in-class assessment, Osmosis quizzes tackle key topics in pathology, diagnostics, and treatment approaches. By honing in on clinical readiness and decision-making, we make sure the knowledge you gain empowers you both in the classroom and in real-world practice. Jump in and supercharge your exam prep!

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A 35-year-old man presents to the emergency department with a 1-hour of severe anxiety. He reports that he has been feeling increasingly stressed due to work and family issues over the past few weeks. Today, he had a poor performance review at work, after which he began to feel tightness around his neck, lightheadedness, and difficulty breathing. He also complains of tingling around his mouth and in his hands. Temperature is 37°C (98.6°F), heart rate is 105 beats/minute, blood pressure is 120/75 mm Hg, respiratory rate is 30/minute, and oxygen saturation is 100% on room air. He appears anxious. Neurological and cardiopulmonary examination is unremarkable. Laboratory results are listed below. Which of the following additional physical exam findings may be expected?

 Laboratory Test     Result     Reference Range    
 Sodium 140 mEq/L 136-146 mEq/L
 Potassium 4.0 mEq/L 3.5-5 mEq/L
 Chloride 102 mEq/L 95-105 mEq/L
 Bicarbonate 24 mEq/L 22-28 mEq/L
 Total calcium 9.0 mg/dL 8.4-10.2 mg/dL
 Magnesium 2.0 mg/dL 1.5-2 mg/dL
 pH 7.50 7.35-7.45
 PaCO2 30 mmHg 33-45 mmHg
 PaO2 100 mmHg 75-105 mmHg

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