ECON 2A03 Study Guide - Water–Electrolyte Imbalance, Renal Medulla, Cystatin
17 Sep 2014
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Biochem 3h03 lecture 8 interpreting acid: base and fluid: electrolyte problems. Bicarbonate buffer system co2 is the respiratory component, and bicarb is metabolic component. Changes in h+ can be due to either components. Metabolic acidosis is compensated for by respiratory alkalosis. Respiratory compensation is quick (hours) can seldom completely compensate. ph does not return all the way to 7. 40. Metabolic compensation is slow (days) but given enough time will compensate almost all the way back to ph 7. 40. Acidosis ph < 7. 40, h+ > 40 nmo/l. Alkalosis ph: examine ph to determine alka/acid, examine hco3 and pco2 to determine metabolic or respiratory, examine compensation to see if it is appropriate. 18 y. o female presents to ed w/ history of tiredness, weight loss, polyuria, polydipsia, progressing to vomting and acute illness. Breath has a fruity smell. ph 7. 05, h+ 89 nmol/l, pco2 15 mm hg, hco3 5. 0 mmol/l.
