What does assist control ventilation deliver to the patient?

Assist control ventilation is a mechanical ventilation mode that supports patients by delivering a set minimum respiratory rate and tidal volume. In this mode, if a patient initiates a breath, the ventilator delivers the pre-set tidal volume (which ensures a consistent minute ventilation) regardless of whether the breath is initiated by the patient or the machine. This characteristic is particularly beneficial for patients who may be unable to maintain adequate ventilation on their own, as it ensures that they receive enough air, thereby maintaining proper oxygenation and carbon dioxide elimination.

The minimum respiratory rate is also crucial, as it guarantees that the patient receives a baseline number of breaths per minute, effectively preventing hypoventilation. This helps in achieving consistent minute ventilation, which is vital for maintaining gas exchange and overall respiratory function. The combination of these factors—delivering a predetermined tidal volume and setting a minimal respiratory rate—ensures that the patient receives adequate ventilation support tailored to their needs.