Q: How long does it take after endotracheal tube (ETT) suctioning to have reliable Rapid Shallow Breathing Index (RSBI)?
Answer: Five minutes
ETT suctioning is a regular phenomenon during ventilator liberation, but it should be kept in mind that ETT suctioning increase RSBI. It takes about five minutes after ETT suctioning to get reliable RSBI.
Seymour CW, Cross BJ, Cooke CR, et al. Physiologic impact of closed-system endotracheal suctioning in spontaneously breathing patients receiving mechanical ventilation. Respir Care 2009; 54:367.