| 研究生: |
黃郁淳 Huang, Yu-Chun |
|---|---|
| 論文名稱: |
靜脈輸注方式對新生兒血中Amikacin濃度之影響 Influence of Intravenous Infusion Procedure on the Amikacin Serum Levels in Neonates. |
| 指導教授: |
高雅慧
Yang, Yea-Huei Kao 林其和 Lin, Chyi-Her 林毓志 Lin, Yuh-Jyh |
| 學位類別: |
碩士 Master |
| 系所名稱: |
醫學院 - 臨床藥學研究所 Institute of Clinical Pharmacy |
| 論文出版年: | 2004 |
| 畢業學年度: | 92 |
| 語文別: | 中文 |
| 論文頁數: | 151 |
| 中文關鍵詞: | Amikacin 、藥物治療濃度監測 、靜脈輸注方式 、新生兒加護病房 |
| 外文關鍵詞: | amikacin, TDM, NICU, intravenous infusion method |
| 相關次數: | 點閱:109 下載:1 |
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研究背景
在成大醫院之新生兒加護病房(NICU),當懷疑新生兒受到院內感染時,amikacin併用ampicillin/sulbactam為經驗性治療之首選藥物。在文獻上關於amikacin之藥動學研究,發現藥物在新生兒之分布體積及排除半衰期,隨著小兒成長過程之生理變化,有明顯之個體間差異,尤其是低出生體重之早產兒,因此建議新生兒使用amikacin時,應進行治療濃度監測,以確保療效及避免毒性,而過去在院內尚未有執行經驗。在臨床上執行藥物治療濃度監測時,amikacin建議在藥品輸注完後30分鐘抽血,而目前新生兒加護病房之靜脈輸注方式,若無法在特定時間內將藥品輸注完,將可能影響amikacin治療濃度監測之結果及判讀,因此為本研究希望探討之議題。
研究目的
本研究之目的主要包括:
(1) 利用體外試驗,評估新生兒加護病房現行之靜脈輸注方式,對藥品輸注時間之影響。
(2) 收集新生兒amikacin治療濃度監測之執行經驗,並且探討可能影響血中濃度之因素。
體外試驗之研究方法
利用新生兒加護病房使用之靜脈輸注管及輸注幫浦(IMED),將amikacin分別由輸注管上三個不同注射Y-site投予,並設定輸注流速為5、10、30 ml/hr。在藥品輸注期間,藉由輸注管末端收集之amikacin藥物量,評估不同條件下,輸注完至少95%藥量之時間。
研究結果
Amikacin之輸注時間會隨著流速及注射部位而改變,當流速為5 ml/hr,由輸注管之遠端Y-site給藥後,輸注完95%藥量至少需要三小時。若要確保amikacin在30分鐘輸注完,則流速5 ml/hr時,應由近端Y-site給藥,流速10及30 ml/hr時,應由中間Y-site給藥。對照臨床上治療濃度監測之結果,延長藥品輸注時間,會顯著影響到amikacin之最高血中濃度值。
結論
目前新生兒加護病房使用之靜脈輸注方式,在不同流速及注射部位下,會影響藥品輸注時間,根據體外試驗之研究結果,建議amikacin可統一改由輸注管之中間Y-site給藥,則在流速5~30 ml/hr時,藥品輸注時間為30~60分鐘。
在新生兒amikacin之治療濃度監測方面,由於本研究期間,實際執行抽血監測之人數偏低,因此無法探討其它可能影響血中濃度之因素,未來在新生兒執行amikacin治療濃度監測,仍需要加以推廣,才能進一步評估。
Background: In the NICU of National Cheng Kung University Hospital (NCKUH), amikacin combined with ampicillin/sulbactam is the drug of choice in newborns of suspected nosocomial infection. The pharmacokinetic studies of amikacin in neonates had demonstrated significant inter-individual variability in drug distribution and elimination, especially in the low birth weight premature infants. The therapeutic drug monitoring (TDM) of amikacin in neonates has been recommended to ensure effectiveness and avoid toxic side effect, but a standard procedure has never been established in our hospital. We observed that the administering procedure of amikacin infusion may result in erroneous dosing, which can further lead to therapeutic failure.
Objectives: An in vitro study was designed to investigate whether the intravenous infusion method influence the time of complete delivery of amikacin. And, an exact procedure for drug administration can then be formulated.
Methods of the in vitro study: We used the infusion set and infusion pump in the NICU. Amikacin was injected into the infusion set at three injection Y-sites set at 5, 10, 30 ml/hr flow rate. The amount of amikacin collected at varied infusion intervals was determined and the time required for complete drug delivery was calculated.
Results: The delivery time of amikacin varied with infusion rate and injection site. The longest drug delivery time was 3 hours at a flow rate of 5 ml/hr when drug was injected into the distal Y-site. Only when amikacin was injected into the proximal Y-site at a flow rate of 5 ml/hr and the middle Y-site at the flow rate of 10 and 30 ml/hr can the drug be delivered completely within 30 minutes. Comparing with the results of TDM, the delay of drug delivery will obviously influence the peak level of amikacin.
Conclusions: The infusion procedure in the NICU influenced drug delivery time at various infusion rates and injection sites. We recommend that amikacin should be injected into the middle Y-site to ensure drug delivery time within 30~60 minutes at flow rate of 5~30 ml/hr.
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