USMLE Step 1 Respiratory Physiology Review 61 04 Acid Base Disorders 2_3

USMLE Step 1 Respiratory Physiology Review 61 04 Acid Base Disorders 2_3

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Play USMLE Audio MP3   61 04 Acid Base Disorders 2_3 Below

Begin   61 04 Acid Base Disorders 2_3  Transcription

Continuing with the same four disorders we’ve been discussing.

For what two is there respiratory compensation?

  • Metabolic acidosis and metabolic alkalosis

What is the respiratory compensation for metabolic acidosis?

  • Respiratory compensation for metabolic acidosis is hyperventilation.

And what is hyperventilation?

  • Hyperventilation is increased ventilation.

What is the respiratory compensation for metabolic alkalosis?

  • Hypoventilation

What is hypoventilation?

  • Hypoventilation is reduced ventilation.

For which of the four disorders is there renal compensation?

  • There is renal compensation for all four disorders

What is the renal compensation for metabolic acidosis?

  • Increased hydrogen ion excretion and increased bicarbonate reabsorption. Also making new bicarbonate.

What is the renal compensation for metabolic alkalosis?

  • Bicarbonate excretion only

What is the renal compensation for respiratory acidosis?

  • Increased hydrogen ion excretion and increased bicarbonate reabsorption.

What is the renal compensation for respiratory alkalosis?

  • Reduced hydrogen ion excretion and reduced bicarbonate reabsorption

Student doctor, please pause the tape and summarize compensation for metabolic and respirtaoty acidosis and alkalosis.

  • The respiratory compensation for metabolic acidosis is hyperventilation. The respiratory compensation for metabolic alkalosis is hypoventilation. There is no respiratory compensation for respiratory acidosis or for respiratory alkalosis. The renal compensation for metabolic acidosis is increased hydrogen ion excretion and increased bicarbonate reabsorption, also making new bicarbonate. For metabolic alkalosis, renal compensation is bicarbonate excretion only. Renal compensation for respiratory acidosis is increased hydrogen ion excretion and increased bicarbonate reabsorption. Finally, the renal compensation for respiratory alkalosis is reduced hydrogen ion excretion and reduced bicarbonate reabsorption.

 

 

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