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A RSBI score of less than 65 [3] indicating a relatively low respiratory rate compared to tidal volume is generally considered as an indication of weaning readiness. A patient with a rapid shallow breathing index (RSBI) of less than 105 has an approximately 80% chance of being successfully extubated, whereas an RSBI of greater than 105 virtually guarantees weaning failure. [4]
Lung function development is reduced in children who grow up near motorways [5] [6] although this seems at least in part reversible. [7] Air pollution exposure affects FEV 1 in asthmatics, but also affects FVC and FEV 1 in healthy adults even at low concentrations. [8] Specific changes in lung volumes also occur during pregnancy.
Mandatory minute ventilation (MMV) (also called minimum minute ventilation) is a mode of mechanical ventilation which requires the operator to determine what the appropriate minute ventilation for the patient should be and the ventilator then monitors the patient's ability to generate this volume. If the calculation suggests the volume target ...
Modes of mechanical ventilation are one of the most important aspects of the usage of mechanical ventilation.The mode refers to the method of inspiratory support. In general, mode selection is based on clinician familiarity and institutional preferences, since there is a paucity of evidence indicating that the mode affects clinical outcome.
The method for monitoring whether or not the patient is meeting the required minute ventilation (V E) is different per ventilator brand and model, but generally there is a window of time being monitored and a smaller window being checked against that larger window (i.e., in the Dräger Evita® line of mechanical ventilators there is a moving 20 ...
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Mean airway pressure typically refers to the mean pressure applied during positive-pressure mechanical ventilation. Mean airway pressure correlates with alveolar ventilation, arterial oxygenation, [1] hemodynamic performance, and barotrauma. [2] It can also match the alveolar pressure if there is no difference between inspiratory and expiratory ...
There is a standardized nomenclature of mechanical ventilation that is specific about nomenclature related to modes, but not settings and variables. [2] Terms are now split into acronyms of CONTROL VARIABLE + BREATH SEQUENCE + TARGETING SCHEME. As in PC-CMV, Pressure Controlled Continuous Mandatory Ventilation.