Key result
A forced-air warming blanket reduced carbon dioxide accumulation during eye surgery, maintaining transcutaneous CO2 at 5.7 kPa vs a rise to 6.4 kPa with a heated overblanket (p=0.0001).
Why the study?
Does a forced-air warming blanket reduce carbon dioxide accumulation under drapes in patients undergoing eye surgery under local anaesthesia?
RCT (n=40)
single-blind
randomly assigned
Does a forced-air warming blanket reduce carbon dioxide accumulation under drapes in patients undergoing eye surgery under local anaesthesia?
Absolute Event Rate: 5.7% vs 6.4%
p-value: p=0.0001
Forced-air warming reduces carbon dioxide accumulation under surgical drapes in patients undergoing eye surgery under local anaesthesia.
Forced-air warming prevented CO2 rise under drapes; supports further evaluation before routine adoption in local-anesthesia eye surgery.
Surgical drapes used during eye surgery are impermeable to air and hence risk trapping air underneath them. We investigated the effect of a forced-air warming blanket on carbon dioxide accumulation under the drapes in patients undergoing eye surgery under local anaesthesia without sedation. Forty patients of ASA physical status 1 and 2 were randomly assigned to either the forced-air warmer (n = 20) or a control heated overblanket (n = 20). All patients were given 1 l.min(-1) oxygen. We measured transcutaneous and end-tidal carbon dioxide partial pressures, heart rate, arterial pressure, respiratory rate, temperature and oxygen saturation before and after draping, then every 5 min thereafter for 30 min. The mean (SD) transcutaneous carbon dioxide partial pressure in the forced-air warming group stayed constant after draping at 5.7 (0.2) kPa but rose to a maximum of 6.4 (0.4) kPa in the heated overblanket group (p = 0.0001 for the difference at time points 15 min and later). We conclude that forced-air warming reduces carbon dioxide accumulation under the drapes in patients undergoing eye surgery under local anaesthesia.
No takes yet. Share an insight, caveat, or question.
Sukcharanjit et al. (2015) conducted an RCT in eye surgery under local anaesthesia without sedation (n=40). forced-air warming blanket vs. control heated overblanket was evaluated on transcutaneous carbon dioxide partial pressure (p=0.0001). A forced-air warming blanket reduced carbon dioxide accumulation during eye surgery, maintaining transcutaneous CO2 at 5.7 kPa vs a rise to 6.4 kPa with a heated overblanket (p=0.0001).