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finla exam review
arterial blood gas
| Question | Answer |
|---|---|
| what is the primary chemical event in metabolic alkalosis? | increase in blood hco3 levels |
| compensation for metabolic acidosis occurs through which of the following? | decrease in blood co2 levels |
| what clinical findings do you expect to find in a fully compensated respiratory acidosis? | elevated hco3 & elevated po2 |
| a patient has an anion gap 21 meq/L Based on this information, what can you conclude | the patient probably has metabolic acidosis, the concentrate of fixed acids has increased & there is an abnormal excess of unmeasured anions in the plasma |
| what is the sum of all blood buffers in 1 L of blood? | Buffer Base |
| which is not a cause of metabolic alkalosis? | hyperkalemia |
| what would be an example of an latrogenic cause of metabolic alkalosis? | gastric suction |
| an increase in the H+ ion concentration of the blood du only to an increase in the arterial pco2 (hypercapnia best describes)_? | respiratory acidosis |
| a pt with a measured plasma hco3 concentration of 24 mmol/L has an episode of acute hypoventilation , with the pco2 rising from 40 to 70 mm hg. What do you predict will happen acutely to the plasma hco3 concentration? | hc03 will rise to about 27 to 28 mmol/L |
| the primary goal of acid base homeostasis is to maintain what> | normal PH |
| what are the causes of respiratory alkalosis | anxiety, hypoxemia, pain |
| in regards to acid excretion by the body, which of the following statements are true? | if one system fails the other can help compensate, the kidneys can only remove fixed acids, the lungs can remove acid quickly |
| According to the Henderson-Hasselbalch equation, the ph of the blood will be normal as long as the ratio of HCo3 to dissolved co2 is what | 20:1 |
| what is the limiting factor for H+ excretion in the renal tubules? | insufficient buffers |
| what is the the kidneys most important function | sodium maintencne |
| what is the normal BE range | +2 meq/L |
| what act as the first line of defense against the accumulation of H+ ions? | blood buffer systems |
| compensation for respiratory alkalosis occurs through which of the following | renal excretion of HCo3 |
| what is the primary chemical event in respiratory acidosis? | increase in blood co2 levels |
| based in the ABg what is the diagnosis? PH-7.62 PCO2-32 mm hg HCo3 29 meq/L | combined metabolic and respiratory alkalosis |
| H+ can be determined by the use of what factors |
Created by:
mackeyh