What is the Tobin index?
The rapid shallow breathing index (RSBI) or Yang Tobin index is a tool that is used in the weaning of mechanical ventilation on intensive care units. The RSBI is defined as the ratio of respiratory frequency to tidal volume (f/VT).
What is normal rapid shallow breathing index?
The rapid shallow breathing index (RSBI) is the ratio determined by the frequency (f) divided by the tidal volume (VT). An RSBI <105 has been widely accepted by healthcare professionals as a criteria for weaning to extubation and has been integrated into most mechanical ventilation weaning protocols.
How is SBT calculated?
The rapid shallow breathing index (RSBI) is calculated as the ratio of tidal volume (TV) in liters to respiratory rate (RR) in breaths/minute: RSBI = TV/RR.
When do you use RSBI?
Clinicians can use the positive RSBI as an additional supporting data point to for the decision to extubate. Although the RSBI is generally accepted as helpful in predicting success of extubation, there is a dearth of convincing evidence that its application in decision-making leads to a change in outcomes.
What are weaning parameters for extubation?
The most common weaning parameters to consider initiating the SBT are RSBI of less than 105, maximal inspiratory pressure (MIP) less than -30 cm of water, and minute ventilation less than 10 liters per minute.
What is rapid shallow breathing?
Rapid, shallow breathing, also called tachypnea, occurs when you take more breaths than normal in a given minute. When a person breathes rapidly, it’s sometimes known as hyperventilation, but hyperventilation usually refers to rapid, deep breaths. The average adult normally takes between 12 to 20 breaths per minute.
What does Rsbi stand for?
Rapid Shallow Breathing Index (RSBI) is one of the most commonly used indices which was first introduced by Yang and Tobin (7). RSBI is calculated by this formula: Respiratory rate Tidal volume. Several medical centers perform weaning if RSBI is less than 105 (8).
What is considered the best predictor of a successful extubation?
In the present study, a RSBI of 68 breath/min/ml was identified as the most accurate predictor of failed extubation according to ROC analysis. After multivariate analysis, the OR for successful extubation was 1.57 (95% CI = 1.27–1.93, P < 0.001) in patients with a RSBI less than 68 breath/min/ml.
How are patients weaned off a ventilator?
Weaning a patient from a ventilator occurs when the condition of the patient improves and a decision is made to remove them from the ventilator through a trial of spontaneous breathing through the endotracheal tube and eventually extubation (removal of the tube).