Clinical Observation of Continuous Infusion of Atracurium in Patients Receiving Total Intravenous Anesthesia <?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /> 邹伟1 高春霖2 薛玉良3 1中国石油天然气集团公司中心医院麻醉科, 廊坊065000; 2天津医科大学第二医院麻醉科,天津300211; 3泰达国际心血管病医院麻醉科,天津300457 Wei Zou*, Chun-lin Gao**, Yu-liang Xue#. *Department of Anesthesiology, Central Hospital of China National Petroleum Corporation, Langfang 065000, China **Department of anesthesiology,The Second Hospital of Tianjin Medical University, Tianjin 300211, China # Department of anesthesiology,TEDA International Cardiovascular Hospital, Tianjin 300457, China ABSTRACT Objective: To examine the average infusion rate necessary to maintain approximately 90 %~99 % T1 suppression of homemade atracurium after a single bolus and followed by continuous infusion under total intravenous anesthesia. Methods: 80 patients undergoing elective surgical procedures were anesthetized with intravenous propofol and fentanyl. All patients received homemade atracurium 0.5mg•kg-1 to facilitate intubation. The infusion was started when T1 return to 25%. During surgery, the infusion rate was regulated to maintain about 90 %~99 % T1 suppression. The infusion was discontinued approximately 20-min before the termination of operation. The average infusion rate necessary to maintain approximately 90 %~99 % T1 suppression was calculated. Onset time and duration of action of initial dose were recorded. Post tetanic count (PTC ) was used when no response to TOF stimulation. Recovery index and extubation time were observed after infusion. Double burst stimulation (DBS) and TR were registered during extubating. Results: The average infusion rate was 5.1±0.4μg•kg-1•min-1 (0.20±0.02mg•m-2•min-1 ). Onset time and duration of action of initial dose were 203±47 s and 41.5±4.5 min, respectively. A close linear relation was found between T1 and the square root of PTC (γ=-0.921, P<0.001). After termination of infusion, recovery index was 14.9±3.7 min, extubation time was 44.1±6.1 min, and the DBS ratio was significantly correlated to the TR ratio (γ=0.930, P<0.001). Conclusions: With proper, optimal and quantitative measurement of neuromuscular transmission, homemade atracurium has proved eminently suitable for administration by infusion for surgical procedures. Key words: Atracurium; Continuous infusion; Total intravenous anesthesia Corresponding author: Wei Zou; E-mail: naonao0913@sina.com 阿曲库铵(卡肌宁)进入临床已超过20年,国内外报道很多。本研究旨在检测验证国产阿曲库铵的临床效价,探讨在全凭静脉麻醉下持续输注阿曲库铵的可能性及平均输注速率,为临床应用提供可信依据。 |