Effectiveness of Modified Ophthalmic Draping Method in Preventing Carbon Dioxide Accumulation in Patient Undergoing Eye Surgery Under Local Anesthesia

Status

Completed

Phases

Phase 1

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT02036034

Enrollment

Registered

2014-01-14

Start date

2010-10-31

Completion date

2012-01-31

Last updated

2014-01-14

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

To Prevent Hypercarbia Under the Opthalmology Drape During Surgery., To Prevent Hypothermia During Opthalmology Surgery.

Brief summary

The investigators hypothesize that this modified ophthalmic draping will reduce the accumulation and rebreathing of carbon dioxide during eye surgery.

Detailed description

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.

Interventions

DEVICEforced air warmer (Bair Hugger)

forced air warmer placed under the chin before draping, forced air warmer inflated after draping is completed.

DEVICEwarming blanket

warming blanket placed on torso of patient under the drape.

Study design

Allocation

RANDOMIZED

Intervention model

PARALLEL

Primary purpose

PREVENTION

Masking

DOUBLE (Investigator, Outcomes Assessor)

Eligibility

Sex/Gender

ALL

Age

40 Years to 80 Years

Healthy volunteers

Inclusion criteria

\- ASA physical status I,II OR III,adult aged 40 to 80 years old,scheduled to undergo elective eye surgery under local anaesthetic at UMMC will be enrolled in this study.

Exclusion criteria

* Pre-existing pulmonary disease,psychological disorders,neurological disorder and patient required sedation.

Design outcomes

Primary

Measure	Time frame	Description
transcutaneous CO2 level in mmHg under surgical drape with forced air warmer	10 minutes, 15 minutes, 30 minutes	baseline transcutanoeus CO2 level will be taken before surgical draping. After draping, CO2 level will be measured with transcutaneous CO2 frome earlobe at 10 minutes, 15 minutes, and 30 minutes.

Countries

Malaysia

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026