Effect of heating and humidifying gas on patients undergoing awake laparoscopy.
OBJECTIVE
To determine the effect of heating and humidifying CO2 on the tolerance of awake laparoscopy and frequency of shoulder pain and patient recovery.


METHODS
Randomized, controlled study (Canadian Task Force classification I).


METHODS
University-affiliated hospital.


METHODS
Forty consecutive women.


METHODS
Awake laparoscopy with and without heating and humidifying CO2.


RESULTS
Heating and humidifying CO2 decreased the frequency of shoulder pain and increased tolerance of the procedure. Thirty percent of patients required no intravenous sedation and did not experience shoulder pain when 3 L of gas or 15 mm Hg pressure was achieved. When shoulder pain did occur with heated and humidified gas, it was brief.


CONCLUSIONS
Heating and humidifying CO2 increases tolerance of awake laparoscopy and decreases the frequency and duration of shoulder pain.
Demco
L
L
Department of Obstetrics and Gynecology, University of Calgary, Alberta, Canada.
D002245:Carbon Dioxide; D004311:Double-Blind Method; D005260:Female; D006358:Hot Temperature; D006801:Humans; D006813:Humidity; D010535:Laparoscopy / Q000009:adverse effects / Q000379:methods*; D011028:Pneumoperitoneum, Artificial / Q000009:adverse effects / Q000379:methods*; D020069:Shoulder Pain / Q000209:etiology / Q000517:prevention & control*
D002245:Carbon Dioxide