Minienvironmental Control under the Drapes during Operations on the Eyes of Conscious Patients

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Abstract
The environmental conditions that prevail under impermeable disposable drapes used for ophthalmic surgery included significant CO2 build-up, hypoxia, heat and humidity. A flexible hollow drape-supporting screen was constructed for use as an O2 administrator and simultaneous gas evacuator. The characteristics of the device and its ability to create a satisfactory miniclimatic environment were described. Simultaneous administration of oxygen and suction immediately after draping effectively regulated the minienvironment around the face of the patient within satisfactory limits.

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