NAME Medical Biochemistry Exam 1 Problems with

Name medical biochemistry exam 1 problems with

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August 24, 2010NAME _______________________Medical Biochemistry Exam 1Problems with #____#____#____#____Questions 45-50 are M1 COR questions and count for COR and Biochemistry.Use this stem for 45, 46 and 47.A 22 yo diabetic patient on chronic insulin therapy presents "not feeling well" for 2-3 days. The patient also has polyuria, polydipsia, and polyphagia. Patient has a fruity odor on his breath. ABG's in your office reveal:PaO2 = 113 mm HgPaCO2 = 27 mm HgpH = 7.16HCO3 = 5 meq/LFiO2 = .21 (at sea level)Serum glucose = 670Na = 138Na = 138 (normal 135-145)(normal 135-145)K = 5.5K = 5.5(3.5-5.0)(3.5-5.0)Cl = 100Cl = 100(100-106)(100-106)45. What acid-base status does this patient have?A. Respiratory AcidosisB. Respiratory AlkalosisC. Metabolic AcidosisD. Metabolic AlkalosisE. a mixed Metabolic and Respiratory Acidosis46. Calculate his anion gap including Potassium in the calculation.47. What is wrong with this patient?13
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August 24, 2010NAME _______________________Medical Biochemistry Exam 1Problems with #____#____#____#____48. What causes a left shift in the O2 saturation curve of hemoglobin?49. A student comes to an exam but complains of thirst, fatigue and nausea. The student/employee clinic sends them to the ER where ABG's are drawn and reveal low HCO3-(15 mM) and pH (7.29) values, but the printer runs out of ink and doesn't print outthe CO2value? Since the student was prepared for their first Biochemistry exam, she calculates the CO2level to be: (Assume = 0.03 meqL-1mm Hg-1, pK = 6.1)A. 10 mm HgB. 20 mm HgC. 25.0 mm HgD. 32.0 mm HgE. 40.0 mm Hg50. A 68 yo retired MD with severe COPD is recovering from a myocardial infarction. He is a 60 pack/year smoker with chronic shortness of breath and cough. ABG's reveal the following chronic and abnormal values:PaO2 = 61 mm HgPaCO2 = 50 mm HgpH = 7.43HCO3 = 32 meq/LFiO2 = .21 (at sea level)What statement is TRUEabout this patient?14
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