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.
Reference:
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.
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