Rate of rapid superficial diaphragmatic breathing as a weaning predictor of mechanical ventilation

Abstract

Introduction: Weaning from mechanical ventilation (MV) is a key step for patients undergoing invasive MV in the intensive care unit (ICU). Among the various tools intended to help predict successor failure weaning, we found the rapid shallow breathing index (RSBI for its acronym in English), that is, the relationship between the respiratory rate and the volume current (Fr/Vt) measured during a spontaneous breathing test (SBT by its acronym in English). Objective: To describe the rate of shallow breathing Diagrammatic as a Weaning predictor of mechanical ventilation. Materials and methods: Review study, monographic type. supported by articles scientific, published in different magazines indexed in recognized indices. Result: During an SBT, the RSBI value appears to be parallel to the evolution of respiratory muscle fatigue. Therefore, it is considered that the RSBI reflects the inspiratory load, being the decrease in tidal volume together with the increased respiratory rate indicative of possible weakness or fatigue of the inspiratory muscles, or other physiological effects. Conclusion: Among the patients ventilated in the ICU, a multifactorial alteration of the diaphragm is common and can result in weaning failure and prolongation of invasive MV; by Therefore, assessing diaphragm function is a useful means of assessing the patient's ability to tolerate spontaneous breathing.