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Prototype of the positive pressure oxygen AL introduced by Dr Allen P. Bloxsom, Houston, Texas, 1950. From J Pediatr 1950;37:311. Used with permission.
Commercial Plexiglas version of the positive pressure oxygen AL. Arrival of the unit at the Dansville Memorial Hospital, Dansville, New York, June 1952; photo courtesy of James Gross and the Dansville Breeze, June 26, 1952.
Purported Advantages of the AL
The promotion of bronchial drainage.
A more uniform alveolar aeration.
Increase of any absorption of oxygen thorugh the skin.
Relieving and protecting against atelectasis.
Provides a breathing exercise and improves muscle tone.
Combats acute pulmonary edema.
Provides favorable conditions for the diffusion and use of oxygen by the premature infant.
Bloxsom AP. J Pediatr. 1950;37:314.
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