• Medicine · Oct 2018

    Randomized Controlled Trial

    Sevoflurane is an effective adjuvant to propofol-based total intravenous anesthesia for attenuating cough reflex in nonintubated video-assisted thoracoscopic surgery.

    • Hou-Chuan Lai, Tsai-Wang Huang, Wei-Cheng Tseng, Wei-Lin Lin, Hung Chang, and Zhi-Fu Wu.
    • Department of Anesthesiology.
    • Medicine (Baltimore). 2018 Oct 1; 97 (42): e12927.

    BackgroundNonintubated video-assisted thoracic surgery (VATS) has been widely developed during the recent years. Cough reflex is an inevitably encountered problem while approaching lung lesions, and it may induce major bleeding. Sevoflurane anesthesia may attenuate cough reflex by inhibiting the pulmonary irritant receptors. However, the incidence of postoperative nausea and vomiting (PONV) in inhalational anesthesia is higher than in the propofol-based total intravenous anesthesia (TIVA). We investigated the effect of sevoflurane combination with propofol-based TIVA on cough reflex and PONV in nonintubated VATS.MethodsNinety patients undergoing nonintubated VATS with laryngeal mask airway (LMA) and spontaneous breathing were randomly assigned for TIVA or propofol/sevoflurane anesthesia. In the TIVA group (n = 45), anesthesia was induced and maintained with propofol and fentanyl; in the propofol/sevoflurane (P/S) group (n = 45), 1% sevoflurane anesthesia was added to propofol and fentanyl anesthesia. The primary outcome measurements were cough reflex. In addition, the incidence of PONV and extubation time were investigated.ResultsPatients with cough reflex were significantly fewer in the P/S group than in the TIVA group (10/45 vs 34/45; P < .001). The cough severity (35/5/5/0 vs 11/17/17/0; P < .001) and limb movement (40/5/0/0 vs 28/17/0/0; P < .001) were lower in the P/S group than in the TIVA group. Besides, incremental fentanyl bolus for cough reflex was 5 (0 [0-1]) in the P/S group and 17 (0 [0-3]) in the TIVA group (P < .05). And there was no conversion to general anesthesia, postoperative hemorrhage, aspiration pneumonia, or PONV in the 2 groups. Besides, there was no significant difference in extubation time (TIVA: 5.04 ± 2.88 vs P/S: 4.44 ± 2.98 minutes; P = .33).ConclusionSevoflurane attenuated cough reflex under propofol-based TIVA and did not increase the incidence of PONV and extubation time in nonintubated VATS.

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