hypoxemia vs hypoxia
Hypoxemia: low O2 in arterial blood
Hypoxia: low O2 in cells and tissues
Sign of hypoxia
Early
- increase BP, HR, RR
- Anxiety, drowsiness, restlessness
- Pallor
- Use of accessory muscle to breath
Late
- decrease BP
- cool extremities, central cyanosis
- confusion, coma
Assess need of oxygen (3)