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|7. Combined Acidosis.
A teen-age male has been driving while intoxicated and is admitted to the emergency room unconscious following a road traffic accident. He is shocked and has multiple injuries including broken ribs and crushed legs. The crushed ischemic tissue is causing the metabolic acidosis and the broken ribs are limiting ventilation and causing the respiratory acidosis.
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.
|AR||Acute Respiratory Acidosis:||SBE = 0|
|CR||Chronic Respiratory Acidosis:||SBE = 0.4 x PCO2|
|M||Metabolic Acidosis:||PCO2 = 1.0 x SBE|
|AR||Acute Respiratory Alkalosis:||SBE = 0|
|CR||Chronic Respiratory Alkalosis:||SBE = 0.4 x PCO2|
|M||Metabolic Alkalosis:||PCO2 = 0.6 x SBE|
Alan W. Grogono
|Copyright Oct 2016.|
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