看不懂？

In several other modes “controlled” breaths can be delivered intermittently and intermixed with assisted breaths (synchronized intermittent mandatory ventilation), or combining breaths by removing synchronization and shortening expiratory time (airway pressure release ventilation), by adding volume or volume minute targets to pressure-controlled modes (dual modes, adaptive support ventilation) or even by adding complex algorithms to drive the whole ventilation (Intellivent). Despite some potentially useful features, they all have important drawbacks which should be taken into account by clinicians.

combining与哪个动词并列吗？

三个by并列吗？

其他的模式中，机控呼吸可以间歇性的与辅助性呼吸混合输送（同步间歇指令通气模式），或者通过去同步化和缩短呼气时间（气道压力释放通气模式），或者在压力控制通气模式的基础上，增加容量目标或分钟通气量目标（双模式，适应性支持通气模式），或者增加一些复杂的规则驱动整个通气（智能化通气）。虽然这些模式有潜在的优点，但他们也有重要的缺点，临床医师需要一一考虑。