Question

While observing a patient receiving ventilatory support, you notice that some delivered breaths are begun or ended by the machine, whereas others are begun and ended by the patient. Which of the following modes of ventilatory support is in force?

A) intermittent mandatory ventilation (IMV)


B) pressure support ventilation


C) continuous mandatory ventilation (CMV)


D) airway pressure release ventilation

Answer 1

The mode of ventilatory support where the patient receives some machine-initiated breaths and also breathes spontaneously is intermittent mandatory ventilation (IMV).

Step-by-step explanation:

When observing a patient receiving ventilatory support where some breaths are begun or ended by the machine while others are initiated and terminated by the patient, the mode of ventilatory support in force is intermittent mandatory ventilation (IMV). IMV allows for a set number of breaths to be mechanically delivered by the ventilator while still permitting spontaneous breathing. This mode is distinct from continuous mandatory ventilation (CMV), where all breaths are controlled by the ventilator, and pressure support ventilation, which augments a patient's spontaneous breaths without setting a specific number of breaths. In IMV, the machine delivers a set number of breaths per minute, but the patient is still able to initiate breaths as needed. This mode provides a combination of assisted and spontaneous breathing, allowing for more patient control.