Assertion: invasive ventilation | /r/ObjectUse | used since 1940
Facets:
value: for various indications
type: PURPOSE
Source sentences:
text: Non-invasive ventilation has been used since the 1940s for various indications, but its present-day use for chronic breathing problems arose in the 1980s for people with chronic respiratory muscle weakness, and in the 1990s on intensive care units and other acute care settings for acute respiratory failure.