Aeration Properties of a New Sleeping Surface for Infants

作者：Bar Yishay Ephraim^*; Gaides Mark; Goren Avner; Szeinberg Amir

来源：Pediatric Pulmonology, 2011, 46(2): 193-198.

DOI：10.1002/ppul.21351

• infants
• SIDS
• carbon dioxide
• CO(2)
• environmental risk
• sleep-disordered breathing

Background: Prone sleeping position, use of soft mattresses and head covering by bedclothes are known risk factors for sudden infant death syndrome (SIDS). Rebreathing carbon dioxide (CO(2)) may be a possible mechanism or a confounding factor of SIDS. Objective: To compare the aeration properties of a new concept of infant sleeping surface (Net) to three commercial mattresses advertised to improve aeration and to two standard infant mattresses. Design: Two experiments were performed: (I) A container (head box), filled with 7% CO(2) mixture, was opened to the mattress to allow gas mixture to passively diffuse outside and equilibrate with the surrounding room air. (II) Simulation of normal breathing of an infant, using a unidirectional reciprocal syringe, to determine CO(2) accumulation within the head box. Methods: CO(2) concentrations in the head box were continuously measured until CO(2) levels fell below 1% or for 5 min (experiment l), or until CO(2) accumulation levels plateaued or for 6 min (experiment II). Results: The Net had a significantly faster rate of CO(2) elimination (88.5 +/- 4.6 and 91.9 +/- 0.9 sec, Net alone and when covered with a sheet, respectively) compared to 238.3 +/- 14.2 sec to 387.8 +/- 7.9 sec for the other mattresses (P < 0.001). Only the Net was able to prevent CO2 accumulation with maximal CO(2) levels (0.56 +/- 0.03% and 1.16 +/- 0.05%; Net alone and when covered with a sheet, respectively) significantly lower than the range of 4.6-6.3% for the other mattresses (P < 0.001). Conclusions: The new sleeping surface exhibited significantly better aeration properties in dispersing CO(2) and in preventing its accumulation. Pediatr Pulmonol. 2011; 46:193-198.

• 出版日期2011-2