Background: Noninvasive ventilation has become increasingly available to spinal muscular atrophy (SMA) patients since the early 1990s. This is expected to have improved survival for SMA type 1 patients.

• 背景：自90年代早期，非侵入性通气越来越广泛的应用于脊肌萎缩症（SMA）患者，被认为提高了1型脊肌萎缩症患者的生存率。