NURS 224 Lecture 15: ABG Analysis
29 Mar 2020
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Acidosis: drop in ph below 7. 35 increases respiratory rate. Acid: releases hydrogen ions in a solution. Alkalosis: a rise in ph above 7. 45 decreases respiratory rate. Allen test: measurement of ulnar patency performed prior to drawing up abgs. Base excess (be)/buffer base capacity: a calculated value that represents the amount of acid or base that must be added to a blood sample to achieve a ph of 7. 4 (normal value -3 to. Bases: accept hydrogen ions in a solution. Buffers: substances that prevent major changes in ph by releasing hydrogen ions. Hypercapnia: paco2 levels greater then 45 mmhg. Hypocapnia: paco2 levels less than 35 mmhg. Hypoxemia: indicated by a pao2 level less than 80 mmhg. Paco2: measure of the pressure exerted by dissolved carbon dioxide in the blood high levels seen in those with copd. Pao2: a measurement of the pressure exerted by oxygen that is dissolved in the plasma, normal level is 75-100 mmhg.
