Hypercapnic Respiratory Failure Flashcards
1
Q
PCO2 level at which level of consciousness decreases
A
60 - 70 in normal individuals
90-100 in chronic hypercapnia
2
Q
5 effects of acute increase in hypercapnia
A
- Increased cerebral blood flow/ICP
- Decreased myocardial contractility
- Decreased diaphragmatic function
- Shift in oxyhemoglobin dissociation curve to the right
- Symptoms (dyspnea, somnolence, HA, asterixis)
3
Q
Odine’s Curse
A
Congential Central Hypoventilation Syndrome
Can also be due to tumor or medullary infarct
Absent ventilatory response to hypoxia/hypercapnia
4
Q
Weakness characterized by axonal degeneration
A
Critical illness polyneuropathy
5
Q
OHS BMI and CO2 criteria
A
BMI > 30 and CO2 > 45
6
Q
A
- dead space ventilation
- Ascending phase - alveolar gas reaching upper airway
- Alveolar plateau - breath stream
- Inspiration
