Classical Acid-Base Examples

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Classical Examples:

Acute Respiratory
1. Acidosis || 2. Alkalosis

Chronic Respiratory
3. Acidosis || 4. Alkalosis

Metabolic
5. Acidosis || 6. Alkalosis

Combined
7. Acidosis || 8. Alkalosis

Complex Examples
    Case 9   ||   Case 10  

  Case 11   ||   Case 12  


Instructions:

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diagram and description below.
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8. Combined Alkalosis.

Following bowel surgery a middle aged woman is in critical condition on intermittent positive pressure ventilation - which accounts for her respiratory alkalosis. Her naso-gastric tube is on continuous suction; her loss of gastric acid accounts for her metabolic alkalosis.

Acid-Base Zones

Classical Zones

The diagram shows the position of the principal zones. These zones are based on the review of the literature described by Schlichtig, Grogono, and Severinghaus. The arrows indicate typical acidosis and alkalosis. The labels in the black circles correspond to the legend in the table below.

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Acidosis  Slope
AR   Acute Respiratory Acidosis:  Delta SBE = 0 
CR   Chronic Respiratory Acidosis:   Delta SBE = 0.4 x Delta PCO2
M   Metabolic Acidosis:  Delta PCO2 = 1.0 x Delta SBE
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Alkalosis  Slope
AR   Acute Respiratory Alkalosis:  Delta SBE = 0 
CR   Chronic Respiratory Alkalosis:     Delta SBE = 0.4 x Delta PCO2
M   Metabolic Alkalosis:   Delta PCO2 = 0.6 x Delta SBE



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Acid-Base Tutorial
Alan W. Grogono 		Small Logo Copyright Mar 2010.
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