The full form of PSV is Pressure, Support, Ventilation.
Pressure support ventilation (PSV) is a spontaneous mode of ventilation in which each breath is initiated by the patient but is supported by constant pressure inflation. This method has been shown to increase the efficiency of inspiration and decrease the work of breathing.109,110 Like IMV, PSV is useful for weaning patients from mechanical ventilation. Unlike IMV, in which weaning involves decreasing the number of mandatory breaths with maintenance of inspiratory pressures, PSV involves steady decreases in the level of pressure support because the rate is controlled by the patient.
PSV
means
Pressure, Support, Ventilation
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