With 200 patients during the last 15 years the daily use of apparatus and supervision modalities, as described in the present work, has shown that H.A.V. is entirely possible in tracheostomized C.R.I. patients. Rather strict conditions must be respected (as with hemodialysis at home) if H.A.V. is to be medically and materially successful. The expenses involved can vary greatly according to the medical and material management (choice of study material, economic maintenance, minimal oxygen consumption through proper adjustment...). Finally, the use of assisted ventilation requires a choice amont several adjustment possibilities which are still subject to evolution.