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Accuracy assessment of a PION TCI pump based on international standards
도일,이석환,이용헌,전보경,최병문,노규정 대한마취통증의학회 2019 Anesthesia and pain medicine Vol.14 No.4
Background: Inaccuracies associated with target-controlled infusion (TCI) delivery systems are attributable to both software and hardware issues, as well as pharmacokinetic variability. However, little is known about the inaccuracy of the syringe pump operating in TCI mode. This study aimed to evaluate the accuracy of the TCI pump based on international standards. Methods: A test apparatus for accuracy evaluation of a syringe pump (PION TCI®, Bionet Co. Ltd.) was designed to apply the gravimetric method. Pump accuracy was evaluated in terms of deviation defined by the following equation: infusion rate deviation (%) = (Ratemea − Rateest) / Rateest × 100, where Ratemea is the infusion rate (ml/h) as measured by the gravimetric system, and Rateest is the infusion rate (ml/h) as estimated by the pump. An infusion rate representing TCI mode was determined from previous clinical trial data which evaluated the predictive performance of the pharmacokinetic model. The PION TCI pump used in that clinical trial was used to evaluate accuracy of the syringe pump. The distribution of infusion rates obtained from the clinical trial was calculated, and the median value of the distribution was determined as the representative value. Results: The representative infusion rate representing TCI mode was 31 ml/h, at which the infusion rate deviation was 4.5 ± 1.6%. Conclusions: The inaccuracy of the syringe pump contributing to TCI system inaccuracy is insignificant.
오세일,이상수,도일노,허내윤,한송이,안정민,최영준,서동완,이성구,김명환 대한소화기내시경학회 2005 Clinical Endoscopy Vol.31 No.5
췌장의 동정맥 기형은 매우 드문 질환으로 증상 없이 발견되기도 하나, 반수 이상의 환자에서 위장관 출혈을 유발한다. 위장관 출혈의 원인은 간문맥 고혈압으로 인한 식도정맥류 출혈이 가장 많고, 십이지장 궤양의 출혈, 동정맥 기형 자체의 출혈 등도 드문 출혈의 원인이다. 수술이 유일한 근치적인 치료이나 이미 문맥 고혈압으로 진행되면 수술적 치료에도 문맥 고혈압이 완전히 교정되지 않는다. 저자들은 췌장의 동정맥 기형에 의한 반복적인 십이지장 궤양 출혈을 보인 환자를 진단하고 치료한 1예를 경험하였기에 문헌고찰과 함께 보고하는 바이다. Arteriovenous malformation (AVM) of the pancreas is an extremely rare disease. It may be asymptomatic, but more than half of the patients present with gastrointestinal bleeding. The most common cause of the gastrointestinal bleeding is variceal bleeding due to the portal hypertension resulting from AVM. Bleeding from a duodenal ulcer and AVM to the pancreatic duct are rare findings. Surgical excision is the treatment of choice, but when portal hypertension has developed, this cannot be corrected even after surgical resection. We experienced a case of recurrent duodenal ulcer bleeding that was due to arteriovenous malformation in the head of the pancreas in a 45 year old man. He was successfully treated with pylorus preserving pancreaticoduodenectomy.