Synchronous intermittent mandatory ventilation (SIMV).There are two primary modes of mechanical ventilation: Then you can choose an operational mode to determine the type and amount of support the patient receives. Selecting the control variable is the first step in the initiation of mechanical ventilation. Recap: Volume control and pressure control are the two primary control variables. The primary advantage of pressure-controlled ventilation is that it protects the lungs from overinflation due to too much pressure, which prevents barotrauma and ventilator-induced lung injuries. Since the delivered pressure is fixed, the patient’s tidal volume will vary depending on their lung compliance and airway resistance. Pressure control (PC) is a type of ventilation where the delivered level of pressure is set (i.e., controlled) by the operator. The primary advantage of volume-controlled ventilation is that a set volume allows the operator to regulate the patient’s minute ventilation. Since the delivered volume is fixed, the patient’s peak inspiratory pressure (PIP) will vary depending on their lung compliance and airway resistance. Volume control (VC) is a type of ventilation where a delivered volume is set (i.e., controlled) by the operator. In mechanical ventilation, there are two primary control variables: Therefore, respiratory therapists and medical professionals who work with mechanically-ventilated patients must understand the various modes in order to provide optimal patient care. The characteristics of a specific mode control how the machine uses positive pressure to deliver air to the patient’s lungs. A ventilator mode is a way of describing how the mechanical ventilator assists the patient with taking a breath.
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