NIV

Question 1

Indications for NIV

Answer 1

1. COPD + respiratory acidosis
   pH 7.25-7.35
2. T2RF secondary to:
   - chest wall deformity
   - neuromuscular disease
   - obstructive sleep apnoea
3. cardiogenic pulmonary oedema unresponsive to CPAP
4. weaning from tracheal intubation

Question 2

initial settings for Bi-Level airway support in COPD

Answer 2

Expiratory Positive Airway Pressure (EPAP): 4-5 cm H2O

Inspiratory Positive Airway Pressure (IPAP): 10-15 cm H2O

back up rate: 15 breaths/min

back up inspiration:expiration ratio: 1:3