1 The Montreal Children's Hospital, 2300 Tupper Street, Montreal 108, Quebec, Canada
Experiences with the use of mechanical sistance to respiration in severe hyaline membrane disease or respiratory distress syndrome (RDS), have resulted in a recent increase in papers dealing with the subject.1-6 To these is now added the report of Reynolds7 appearing in this issue, detailing such an experience with a Bennett (positive pressure) respirator at University College Hospital in London.
In evaluating the applicability to other centers of such reports, it is necessary to bear in mind some variables which may profoundly influence the results and which would appear virtually impossible to standardize.