diarrhea (over the past 3 days) and rapid respiration (tachypnea). Blood gases were drawn with the following results:   pH 7.21 pco2 19 mm Hg po2 96 mm Hg HCO3 − 7 mmol/L SO2 96% (calculated) (reference range, >95%) Why is the HCO3 − level so low? Why does the patient have rapid respiration?

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 29SST
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A 50-year-old man came to the emergency department after returning from foreign travel. His symptoms included persistent diarrhea (over the past 3 days) and rapid respiration (tachypnea). Blood gases were drawn with the following results:

 

pH 7.21

pco2 19 mm Hg

po2 96 mm Hg

HCO3 − 7 mmol/L

SO2 96% (calculated) (reference range, >95%)

  1. Why is the HCO3 − level so low?
  2. Why does the patient have rapid respiration?
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