Acid Base Clinical Correlation Flashcards
1
Q
pH is determined by
A
- ratio of serum bicarbonate to PCO2
2
Q
compensatory mechanism for metabolic acidosis
A
- immediately hyperventilation
3
Q
compensatory mechanism for metabolic alkalosis
A
- immediate hypoventilation
4
Q
compensatory mechanism for respiratory acidosis
A
- increased renal HCO3 reabsorption
5
Q
compensatory mechanism for respiratory alkalosis
A
- decreased renal HCO3 reabsorption
6
Q
ways to determine acid/base problems
A
- look at pH
- look at CO2 to determine primary disorder
- determine if compensation is appropriate
7
Q
when is the only time you calculate anion gap
A
- when patient has metabolic acidosis
8
Q
order for ABG
A
- pH/PCO2/PO2/bicarb
9
Q
normal CO2 range
A
- 40
10
Q
normal bicarb range
A
- 24
11
Q
respiratory alkalosis caused by
A
- hyperventilation
12
Q
respiratory acidosis cased by
A
- hypoventilation
13
Q
indications for invasive positive pressure ventilation
A
- hypoxemia respiratory failure
- hypercarbic respiratory failure
- unstable airway
14
Q
how invasive positive pressure ventilation helps in hypoxemic respiratory failure
A
- improves gas exchange by improved V/Q matching by decreasing shunt
- reduces work of breathing and reduces oxygen consumption by respiratory muscles
15
Q
how invasive positive pressure ventilation helps in hypercarbic respiratory failure
A
- reduces work of breathing and prevents respiratory muscle fatigue or speeds recovery when fatigue is present
- maintains adequate alveolar ventilation
