Authors: L E C De Baerdemaeker C Van der Herten J M Gillardin P Pattyn E P Mortier L L Szegedi
Publish Date: 2008/03/04
Volume: 18, Issue: 6, Pages: 680-685
Abstract
There are no guidelines on ventilation modes in morbidly obese patients We investigated the effects of volumecontrolled VCV and pressurecontrolled ventilation PCV on gas exchange respiratory mechanics and cardiovascular responses in laparoscopic gastric banding proceduresAfter Institutional Review Board approval 24 adult consenting patients scheduled for laparoscopic gastric banding were studied Anesthesia was standardized using remifentanil propofol rocuronium and sevoflurane All patients started with VCV with a tidal volume of 10 ml kg−1 ideal body weight respiratory rate adjusted to obtain an endtidal carbon dioxide of 35–40 mmHg positive endexpiratory pressure of 5 cmH2O an inspiratory pause of 10 and an inspiratory/expiratory ratio of 12 Fifteen minutes after pneumoperitoneum the patients were randomly allocated to two groups In Group VCV n = 12 ventilation was with the same parameters In Group PCV n = 12 the airway pressure was set to provide a tidal volume of 10 ml kg−1 ideal body weight without exceeding 35 cm H2O Respiratory rate was adjusted to keep an endtidal carbon dioxide of 35–40 mmHg Arterial blood samples were drawn after surgical positioning and 15 min after allocation Analysis of variance ANOVA was used for statistical analysis
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