Innovation and technology | ResMed
Ventilation: Innovation and technology

Ventilation: Innovation and technology

At ResMed, our mission is to improve the quality of people's lives through healthier sleep every day.

It goes without saying that providing you with effective treatment is important to us, but we also value your comfort during therapy. Our focus on continuous innovation allows us to push the boundaries to give you smaller, quieter and more comfortable ventilators that respond to your individual needs.

Learn more about the different technologies that are present in our range of bilevel and life support ventilator products.

Intelligent technology to match your breathing needs:

iVAPS (intelligent Volume-Assured Pressure Support) with an iBR (intelligent Backup Rate)

ResMed’s intelligent Volume-Assured Pressure Support mode iVAPS, is a unique algorithm that intelligently and automatically tailors therapy to patients’ individual breathing needs. It adjusts to a patient's respiratory rate and targets each patient’s alveolar ventilation, auto-adjusting pressure support as needed to maintain that target and stabilize ventilation. ResMed devices featuring iVAPS technology — along with an intelligent Backup Rate (iBR) — allow you to provide optimal care for those whose condition is likely to change during therapy, such as patients with neuromuscular disease (NMD), obesity hypoventilation syndrome (OHS) and chronic obstructive pulmonary disease (COPD).

  • Unlike other volume assured modes, iVAPS maintains your patient’s unique alveolar ventilation target even when their respiratory rate changes throughout the night (especially during different stages of sleep).
  • iVAPS automatically adapts to the patient's changing needs by constantly monitoring their actual ventilation and respiratory rate in relation to their target ventilation and respiratory rate.

Triggering technologies for more comfort:

Trigger & Cycle Sensitivity Settings

To achieve excellent patient–ventilator synchronization, you can customize the beginning and end of each inspiration with ResMed’s adjustable Trigger & Cycle technology.

  • Recognizing that each patient is different, ResMed provides five levels of Trigger & Cycle sensitivity (Astral however, provides an adjustable cycle sensitivity expressed as a percentage of the maximum flow) to help you tailor and fine-tune triggering and cycling values to different patient conditions.
  • The Trigger sensitivity setting helps care providers customize the sensitivity level of the device to better recognize patients with decreased inspiratory efforts.
  • The Cycle sensitivity helps the care provider ensure appropriate breath termination for every patient, promoting patient-device synchrony. Astral ventilators provide an adjustable cycle sensitivity expressed as a percentage of the maximum flow.
  • The more sensitive Trigger setting (‘High’ and ‘Very High’) provides flexibility for high airflow resistance, especially suited to pediatric patients and those with obstructive lung diseases.
  • Less sensitive Trigger settings ("Low" and "Very Low") provide flexibility if your patient is prone to auto-triggering, caused by cardiogenic artefact.
  • Trigger & Cycle sensitivities work with a technology called Vsync to measure unintentional leak. Together, these technologies provide optimal synchronization.
  • Some ventilators feature ResMed’s NIV+ trigger sensitivity technology to further enhance existing trigger settings.

* Clinical trial sponsored by ResMed. Report by Dr Martin Bachmann, Head of Pneumology, Asklepios Clinics

Leak management technology

ResMed's vented therapy solutions offer a range of intelligent leak management technologies.

  • Learn Circuit capabilities determine the characteristics of a circuit, thereby ensuring effective ventilation and monitoring for each patient, regardless of circuit type.
  • Being able to select the type of mask your patient is using from the device menu, helps the ventilator factor in mask vent flow, i.e. intentional leak.
  • Vsync technology is designed to monitor and compensate for unintentional leak and works with TiControl to optimize synchrony.

All of these features are designed to work together to minimize, monitor and compensate for leak and maintain patient–ventilator synchrony, which is a key factor to effective noninvasive ventilation.


Closely capturing the dynamic nature of leak, ResMed’s Vsync technology accurately compensates for fast-changing, unstable leaks, delivering the right flow at the right time, so that patient–device synchrony is maintained.

  • When Vsync detects a sudden and large change in the leak flow, the usual 10-second window in which it scans for leak is rapidly reduced to a 2-second window.

This allows for rapid resynchronization with the patient — usually within two to three breaths — depending on the size of the leak.

  • Once resynchronization has occurred, the window period is quickly moved back to its default 10-second value.
  • Without Vsync, the outcome would be different. The increased flow from a leak can be misinterpreted as patient inhalation, causing the ventilator to miss trigger from EPAP to IPAP, out of sync with the patient’s actual effort. It can also diminish the ventilator’s ability to cycle the breath.

Vsync works closely with the TiControl feature to further maintain synchronization, even during instances of a large leak.


TiControl allows you to manage your patient's inspiratory time according to their disease state. For challenging respiratory conditions, TiControl allows you to manage spontaneous flow, letting you set your patient’s ideal levels.

Ti Max lets you set a maximum inspiratory time, to reduce the risk of intrinsic PEEP and missed patient effort. For example, Ti Max can be helpful for patients with obstructive disease, ensuring a limited time is spent in inspiration and allowing a longer time spent in the exhaling phase.

Ti Min ensures adequate time for gas exchange without having to increase the pressure setting. Ti Min may be helpful for patients with restrictive lung disease.