As an example, a patient who has a respiratory rate of 20 breaths/min and a tidal volume of 400 mL/breath has an RSBI of (20 breaths/min)/(0.40 L) = 50 breaths/min/L.
How to Calculate Rapid Shallow Breathing Index (RSBI)
|Respiratory Rate (f):|
|Tidal Volume (Vt) in Liters:|
What does Rapid Shallow Breathing Index of less than 105 Mean? An RSBI score of less than 105 is generally considered as an indication of weaning readiness.
Once a patient passes a spontaneous breathing trail other considerations before extubation will need to be considered.
- Does the patient have a difficult airway?
- Is the patient able to clear secretions effectively?
- Is there a risk for post-extubation laryngeal edema?