I-gel Laryngeal Mask Airway Combined with Tracheal Intubation Attenuate Systemic Stress Response in Patients Undergoing Posterior Fossa Surgery

Figure 2

Changes in mean hemodynamic variables in patients with a tracheal tube intubation (Group TT) or an I-gel facilitated endotracheal tube intubation (Group TI) during the study; bars indicate the SEM. Both groups had significant reduction in MAP and HR from their respective baseline values till the end of the surgery. Patients in Group TI had a greater fall in comparison to Group TT over the time period of the observation (). During emergence from anesthesia, MAP and HR in Group TT were significantly higher than that at baseline (). And the intergroup differences were also significant (; ). Baseline (T0); before anesthetic induction (T1); endotracheal tube intubation (T2); 3 min after intubation (T3); end of surgery but before awakening (Group TT) or before endotracheal tube removed (Group TI) (T4); after patients entered the PACU (T5); and throughout emergence from anesthesia at 1, 5, 15, and 30 minutes after extubation or I-gel removal (according to group assignment) (T6-9).

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