April 2 - April 2, 2008 Acid-base imbalances blood pH is...

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April 2, 2008 Acid-base imbalances – blood pH is maintained between 7.35-7.45 Blood pH lower than 7.35 acidosis Blood pH higher than 7.45 alkalosis Acid-base imbalances – 2 components Respiratory Acidosis Alkalosis Metabolic Acidosis Alkalosis Respiratory component of acid-base imbalance Since P CO2 and hence [CO2] in blood affects blood pH, the rate and the depth of breathing which affect P CO2 can also affect blood pH Respiratory acidosis slow, shallow breathing – hypoventilation – decreases the amount of CO2 expired - CO2 in blood rises H2CO3 H+ and HCO3- pH Body compensates (attempts to correct) for respiratory acidosis by HCO3- reabsorption from the kidneys to bind H+; also h+ excretion by the kidneys will be increased Respiratory alkalosis – blood pH above 7.45 Rapid deep breathing – hyperventilation – causes CO2 expired CO2 in blood H2CO3- H+ in blood pH Compensatory mechanism for respiratory alkalosis
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This note was uploaded on 04/20/2008 for the course BSCI 202 taught by Professor Opoku during the Spring '08 term at Maryland.

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April 2 - April 2, 2008 Acid-base imbalances blood pH is...

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