Respiratory Acidosis and Alkalosis

Question 1

Causes of respiratory acidosis

Answer 1

• COPD
• decompensatied asthma/ pulmonary oedema
• neuromuscular disease
• obesity hypoventilation
• sedatives: benzodiazepines, opiate overdose

Question 2

Acidosis or Alkalosis?
COPD

Answer 2

respiratory acidosis

Question 3

Acidosis or Alkalosis?
decompensated asthma/pulmonary oedema

Answer 3

respiratory acidosis

Question 4

Acidosis or Alkalosis?neuromuscular disease

Answer 4

respiratory acidosis

Question 5

Acidosis or Alkalosis?
obesity hypoventilation syndrome

Answer 5

respiratory acidosis

Question 6

Acidosis or Alkalosis?
sedative use: benzodiazepines/opiates

Answer 6

respiratory acidosis

Question 7

Causes of respiratory alkalosis

Answer 7

anxiety (hyperventilation)
PE
salicylate poisoning (initially)
CNS disorders:
- stroke, SAH, encephalitis
altitude
pregnancy

Question 8

Acidosis or Alkalosis?
anxiety (hyperventilation)

Answer 8

Alkalosis

Question 9

Acidosis or Alkalosis?
PE

Answer 9

Alkalosis

Question 10

Acidosis or Alkalosis?
salicylate poisoning

Answer 10

mixed respiratory alkalosis and metabolic acidosis.

Early stimulation of the respiratory centre = alkalosis

later the direct acid effects (combined with acute renal failure) may lead to acidosis

Question 11

Acidosis or Alkalosis?
CNS disorders: Stroke, SAH, encephalitis

Answer 11

Alkalosis

Question 12

Acidosis or Alkalosis?
altitude

Answer 12

Alkalosis

Question 13

Acidosis or Alkalosis?
pregnancy

Answer 13

Alkalosis