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Q37: A patient arrives in the emergency room apparently in cardiogenic shock due to a massive heart attack. His initial arterial blood sample reveals the following concentrations of ions: Sodium Bicarbonate Free calcium Potassium pH 137 mmol/L 14 mmol/L 2.8 mmol/L 4.8 mmol/L 7.16 To correct the acidosis, the attending physician begins an infusion of sodium bicarbonate and after 1 hr takes another blood sample, which reveals the following values: Sodium Bicarbonate Free calcium Potassium pH 138 mmol/L 22 mmol/L 2.3 mmol/L 4.5 mmol/L 7.34

Q37: A patient arrives in the emergency room apparently in cardiogenic shock due to a massive heart attack. His initial arterial blood sample reveals the following concentrations of ions: Sodium Bicarbonate Free calcium Potassium pH 137 mmol/L 14 mmol/L 2.8 mmol/L 4.8 mmol/L 7.16 To correct the acidosis, the attending physician begins an infusion of sodium bicarbonate and after 1 hr takes another blood sample, which reveals the following values: Sodium Bicarbonate Free calcium Potassium pH 138 mmol/L 22 mmol/L 2.3 mmol/L 4.5 mmol/L 7.34

Curren'S Math For Meds: Dosages & Sol
Curren'S Math For Meds: Dosages & Sol
11th Edition
ISBN:9781305143531
Author:CURREN
Publisher:CURREN
Chapter20: Iv Medication And Titration Calculations
Section: Chapter Questions
Problem 39SST
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Q37: A patient arrives in the emergency room apparently in cardiogenic shock due to a massive heart attack. His initial arterial blood sample reveals the following concentrations of ions: Sodium Bicarbonate Free calcium Potassium pH To correct the acidosis, the attending physician begins an infusion of sodium bicarbonate and after 1 hr takes another blood sample, which reveals the following values: Sodium Bicarbonate Free calcium Potassium pH 137 mmol/L 14 mmol/L 2.8 mmol/L 4.8 mmol/L 7.16 138 mmol/L 22 mmol/L 2.3 mmol/L 4.5 mmol/L 7.34 What is the cause of the decrease in calcium ion concentration? A. The increase in arterial pH resulting from the sodium bicarbonate infusion inhibited parathyroid hormone secretion B. The increase in pH resulted in the stimulation of osteoblasts, which removed calcium from the circulation C. The increase in pH resulted in an elevation in the concentration of HPO42, which shifted the equilibrium between HPO42 and Ca11 toward CaHPO4 Answer: C D. The increase in arterial pH stimulated the formation of 1,25-dihydroxycholecalciferol, which resulted in an increased rate of absorption of calcium from the gastrointestinal tract
Transcribed Image Text:Q37: A patient arrives in the emergency room apparently in cardiogenic shock due to a massive heart attack. His initial arterial blood sample reveals the following concentrations of ions: Sodium Bicarbonate Free calcium Potassium pH To correct the acidosis, the attending physician begins an infusion of sodium bicarbonate and after 1 hr takes another blood sample, which reveals the following values: Sodium Bicarbonate Free calcium Potassium pH 137 mmol/L 14 mmol/L 2.8 mmol/L 4.8 mmol/L 7.16 138 mmol/L 22 mmol/L 2.3 mmol/L 4.5 mmol/L 7.34 What is the cause of the decrease in calcium ion concentration? A. The increase in arterial pH resulting from the sodium bicarbonate infusion inhibited parathyroid hormone secretion B. The increase in pH resulted in the stimulation of osteoblasts, which removed calcium from the circulation C. The increase in pH resulted in an elevation in the concentration of HPO42, which shifted the equilibrium between HPO42 and Ca11 toward CaHPO4 Answer: C D. The increase in arterial pH stimulated the formation of 1,25-dihydroxycholecalciferol, which resulted in an increased rate of absorption of calcium from the gastrointestinal tract
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