A unique feature of ResMed’s VPAP™ bilevel devices, TiControl™ allows you to set minimum and maximum inspiratory time limits to accommodate individual respiratory conditions. The minimum and maximum time limits are set at either side of the patient’s ideal spontaneous inspiratory time, providing a “controlled period” for the patient to breathe on their own and spontaneously cycle to EPAP. If their spontaneous inspiratory and expiratory efforts fail to fall within those set time limits, the device will assist them.
The minimum time limit is set via the Ti Min parameter and the maximum time limit is set via the Ti Max parameter. TiControl’s Ti Max and Ti Min parameters play a significant role in maximizing synchronization by effectively intervening to limit or prolong the inspiratory time when required. Along with Vsync, this ensures synchronization even in the presence of significant mouth and/or mask leak.
Adjusting Ti Max may help when treating patients with obstructive lung diseases such as chronic obstructive pulmonary disease (COPD) or overlap syndrome (ie, COPD with OSA). COPD and overlap patients frequently have significant air trapping so they require a longer expiratory phase. To ensure adequate time for the patient to exhale, a reasonable maximum inspiratory time or Ti Max should be set. |
|
Adjusting Ti Min may help when treating patients with restrictive lung disorders such as amyotrophic lateral sclerosis (ALS) and other neuromuscular disorders, chest wall deformity and post-polio. The challenge in such cases is overcoming hypoventilation and alleviating dyspnea. To prevent premature cycling, a reasonable minimum inspiratory time or Ti Min can be set, allowing time for adequate gas exchange.
ResMed’s unique Vsync technology and TiControl offers additional clinical control and assurance of inspiratory time, promoting reliable patient–device synchrony.