Final answer:
Noninvasive ventilation utilizes two main modes: CPAP, which offers steady airway pressure, and BiPAP, which provides varying pressures for inhalation and exhalation to assist patients with breathing difficulties.
Step-by-step explanation:
When using noninvasive ventilation, there are two key modes that are typically employed to assist patients with breathing: Continuous Positive Airway Pressure (CPAP) and Bilevel Positive Airway Pressure (BiPAP). The CPAP mode provides a constant, steady pressure to keep the airways open throughout the entire breathing cycle, which can help a patient with obstructed airways or sleep apnea. On the other hand, BiPAP provides two levels of pressure: a higher one during inhalation to support more effortful breathing and a lower pressure during exhalation to facilitate comfort and ease of breathing. Both of these modes can help maintain proper oxygenation and carbon dioxide elimination in patients with respiratory distress or certain pulmonary conditions.