To Prevent Hypercarbia Under the Opthalmology Drape During Surgery. Clinical Trial
Official title:
Effectiveness of Modified Ophthalmic Draping Method in Preventing Carbon Dioxide Accumulation in Patient Undergoing Eye Surgery Under Local Anesthesia
The investigators hypothesize that this modified ophthalmic draping will reduce the accumulation and rebreathing of carbon dioxide during eye surgery.
Majority of eye surgery has been widely done under local anesthesia provided by the
ophthalmologist with or without sedation.The surgical drapes used often covers the patients
face and beyond in order to maintain sterility of the surgical field. This can lead to
accumulation of carbon dioxide under ophthalmic drapes due to the exhaled carbon dioxide
escapes incompletely through the drapes;hence results in an increase of carbon dioxide in
the ambient air surrounding the patient's head.This causes an increase in arterial carbon
dioxide partial pressure and thus hyperventilation and patient discomfort with restlessness
and unable to stay still during the surgery.
In recent years,several types of ophthalmic drapes have been produced.This study is look for
possible difference in accumulation of carbon dioxide under the standard ophthalmic drapes
compared to the modified draping.
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Allocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Investigator, Outcomes Assessor), Primary Purpose: Prevention