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Wang X, Huang K, Yan H, Lan F, Yao D, Li Y, Xue J, Wang T. The median effective dose (ED50) of cis-Atracurium for laryngeal mask airway insertion during general Anaesthesia for patients undergoing urinary surgery. BMC Anesthesiol 2020; 20:68. [PMID: 32192431 PMCID: PMC7081559 DOI: 10.1186/s12871-020-00982-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2019] [Accepted: 03/09/2020] [Indexed: 12/18/2022] Open
Abstract
Background In clinical practice, the laryngeal mask airway is an easy-to-use supraglottic airway device. However, the cis-atracurium dosage for laryngeal mask insertion has not been standardised. We aimed to determine the optimal dose of cis-atracurium using a sequential method for successful laryngeal mask insertion. Methods The cohort study protocol is registered at clinicaltrial.gov (NCT-03668262). Twenty-three patients undergoing elective urinary surgery were sequentially administered cis-atracurium doses as follows: 150, 100, 70, 50, 30, and 20 μg·kg− 1. The main outcome involved the determination of the response to laryngeal mask airway insertion: ≥16 points and < 16 points indicated “satisfactory” and “unsatisfactory” responses, respectively. The median effective dose was estimated using the mean of the seven crossovers from “satisfactory” and “unsatisfactory” responses. The primary outcome involved the determination of the median effective dose (ED50) of cis-atracurium for laryngeal mask airway insertion. Results The median effective dose of cis-atracurium was 26.5 μg·kg− 1 (95% CI 23.6–29.8) using the sequential method. Heart rate was decreased in the 50 μg·kg− 1 group compared to that in the 30 μg·kg− 1 group at timepoints T7, T8, and T10 (P = 0.0482, P = 0.0460, and P = 0.0236, respectively), but no difference was observed in the 20 μg·kg− 1 group. Systolic blood pressure was decreased in the 50 μg·kg− 1 group compared to that in the 20 μg·kg− 1 group at timepoints T2, T3, and T4 (P = 0.0159, P = 0.0233, and P = 0.0428, respectively). The train-of-four value was significantly lower in the 50 μg·kg− 1 group than in the 30 μg·kg− 1 group at timepoint T3 (P = 0.0326). Conclusions The ED50 of cis-atracurium was 26.5 μg·kg− 1 for laryngeal mask airway insertion. Trial registration Clinicaltrial.gov Registry, NCT03668262, Registered on 11 September 2018.
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Affiliation(s)
- Xiaohua Wang
- Department of Anesthesiology, Xuanwu Hospital, Capital Medical University, Beijing, 100053, China. .,Institute of Geriatrics, Beijing, 100053, China. .,National Clinical Research Center for Geriatric Disorders, Beijing, 100053, China.
| | - Ke Huang
- Department of Anesthesiology, Xuanwu Hospital, Capital Medical University, Beijing, 100053, China.,Institute of Geriatrics, Beijing, 100053, China.,National Clinical Research Center for Geriatric Disorders, Beijing, 100053, China
| | - Hao Yan
- Department of Urinary surgery, Xuanwu Hospital, Capital Medical University, Beijing, 100053, China
| | - Fei Lan
- Department of Anesthesiology, Xuanwu Hospital, Capital Medical University, Beijing, 100053, China.,Institute of Geriatrics, Beijing, 100053, China.,National Clinical Research Center for Geriatric Disorders, Beijing, 100053, China
| | - Dongxu Yao
- Department of Anesthesiology, Xuanwu Hospital, Capital Medical University, Beijing, 100053, China.,Institute of Geriatrics, Beijing, 100053, China.,National Clinical Research Center for Geriatric Disorders, Beijing, 100053, China
| | - Yanhong Li
- Department of Anesthesiology, Xuanwu Hospital, Capital Medical University, Beijing, 100053, China.,Institute of Geriatrics, Beijing, 100053, China.,National Clinical Research Center for Geriatric Disorders, Beijing, 100053, China
| | - Jixiu Xue
- Department of Anesthesiology, Xuanwu Hospital, Capital Medical University, Beijing, 100053, China.,Institute of Geriatrics, Beijing, 100053, China.,National Clinical Research Center for Geriatric Disorders, Beijing, 100053, China
| | - Tianlong Wang
- Department of Anesthesiology, Xuanwu Hospital, Capital Medical University, Beijing, 100053, China. .,Institute of Geriatrics, Beijing, 100053, China. .,National Clinical Research Center for Geriatric Disorders, Beijing, 100053, China.
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