万古霉素最新指南要点分析和临床知识点延伸 -- 第四篇

第四篇

万古霉素最新指南要点分析和临床知识点延伸

万古霉素最新指南要点分析和临床知识点延伸 -- 第四篇

作者

Jingyi Wang, PharmD, University of Cincinnati, College of Pharmacy

Yutong Yang, PharmD candidate, University of Washington, School of Pharmacy

Christine Dai, PharmD candidate, University of Washington, School of Pharmacy

Tracy Zhang, PharmD candidate, The Ohio State University, College of Pharmacy

审核

Zhen Zhang, PharmD, BCPS, RPCCC

翻译

王 钰 联勤保障部队第九九一医院

赵甡慧 内蒙古自治区人民医院

第一篇链接:

The new vancomycin guideline and elaborating pearls -- Part I

万古霉素最新指南要点分析和临床知识点延伸 -- 第一篇

第二篇链接:

The new vancomycin guideline and elaborating pearls -- Part II

万古霉素最新指南要点分析和临床知识点延伸 -- 第二篇

第三篇链接:

The new vancomycin guideline and elaborating pearls -- Part III

万古霉素最新指南要点分析和临床知识点延伸 -- 第三篇

第四篇英文原文:

The new vancomycin guideline and elaborating pearls -- Part IV

06 连续输液 vs. 间歇输液

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万古霉素连续输液(CI)可以替代间歇输液(II),因为CI可在更短时间内达到目标血清浓度,让血清浓度更稳定,更容易进行药物浓度监测,而AKI的风险更低。

两种输液方法的比较研究在2种不同的人群中进行:第一是ICU里危重感染的成年患者;第二种是门诊因骨及关节感染接受抗菌药物治疗(OPTA)的成年患者。

比较两种输注方式的研究多数比较了两种方法的AKI风险和万古霉素目标血清浓度,然而只有4项研究对比了治疗失败和死亡率。

两种输注方式组在测量参数方面存在差异,比如CI组采用稳态浓度,而II组采用谷浓度。

ICU 病人

在一项研究中,比较了万古霉素CI或者II治疗严重烧伤患者的死亡率。CI组患者的肾毒性发生率较低(6.7% v.s. 14.8%,p=0.13)。然而,然而当万古霉素治疗非革兰氏阳性菌引起的败血症时,CI组死亡率较高(70% v.s. 16.7%,p=0.001)。这可能由疾病治疗方案的差异引起,而与给药方式无关联 [14]。

一项研究表明,更多的CI组患者在治疗期间至少有一次可以达到了万古霉素的目标浓度 (63.2% vs 44.9%) [15]。

另一项研究发现,当使用AKIN标准来衡量肾毒性时,CI组的肾毒性发生的几率较低,但发生率仍然较高 (未使用AKIN标准时风险为 4-16% vs 11-19%;使用AKIN标准时风险为 26-28% vs 35-37%) [15, 16, 17, 18, 19]。

OPAT 的病人

在一项比较安全性的研究中,CI组肾毒性的发生较少且发病较晚(P=0.036) [20]。

CI 的剂量考虑

万古霉素连续输液的优点:

❗可快速达到目标浓度是ICU患者的理想选择 [16]。

❗更容易计算AUC和监测稳态浓度。

❗理论上,静脉输液的频率越低,因此导管引起的并发症越少。

但问题和缺点:

❗CI的PK/PD目标值尚未得到验证。

❗使用与万古霉素不能配伍的药物时,需要多条通路/独立通路 [21,22]。

Clinical Pearls

负荷剂量

负荷剂量的计算:

负荷剂量 = Cp x Vd/F [23]

Cp = 目标血浆浓度

F = 生物利用度,F = IV给药为1

🔺指南建议根据实际体重使用20-35mg/kg的负荷剂量

🔺一次给药达到特定血浆药物浓度水平所需的剂量

🔺负荷剂量取决于患者的Vd

负荷剂量一般用于危重病人或通过CI接受万古霉素的病人:

🔺药物必须稀释,并保证每克需要至少60分钟进行缓慢输液(≥1h/1000mg)

🔺维持剂量应在下一个剂量间隔开始

🔺通常根据实际体重计算负荷剂量,并将剂量控制在3000毫克以内,但这并不总是最好的方法

07 特殊人群

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肥胖超重患者

🔸肥胖指体重指数 BMI ≥ 30 kg/m2

🔸基于实际体重计算负荷剂量:20-25 mg/kg,最大剂量为3000 mg。

💮 万古霉素Vd与实际体重呈非线性关系。与正常体重患者相比,肥胖患者的平体重指数Vd要低得多。因此建议对肥胖患者使用较低的mg/kg负荷剂量。

🔸万古霉素Vd与实际体重呈非线性关系

🔸初始维持剂量:

💮 肥胖可能与万古霉素引起肾毒性风险的增加相关,因为使用实际体重计算的维持剂量会导致过度治疗性暴露。

💮 Cockcroft-Gault 公式是估算正常体重患者肌酐清除率的常用方法,但在肥胖患者中应用该公式仍存在争议。

一个针对肥胖患者的群体药代动力学研究提出了另外一个公式,根据年龄、性别、Scr和校正后的体重来估算万古霉素清除率(CLv),该公式被指南推荐用于估算每日总维持剂量 [24]。

💮 具体公式如下 [24]:

CLV = 9.656 − 0.078 × AGE − 2.009 × SCR + 1.09 × SEX + 0.04 × TBW^0.75

AGE = 年龄

SCR = 血清肌酐浓度(mg/dL)

SEX = 1 男 0 女

TBW = 总体重(kg)

💮 AUC = (万古霉素日总剂量)/ CLv

例如: AUC = 500 mg*h/L, CLv = 6 L/h, 每日万古霉素总剂量 = 500 mg*h/L *6 L/h = 3000 mg/day

💮 经验性万古霉素维持剂量通常不超过4500 mg/d

🔸与正常体重患者一样,肥胖患者的剂量调整和监测以临床效果、肾功能和血清谷浓度来评估。建议对AUC进行早期频繁的监测,以进行剂量调整,特别是当经验性剂量超过4,000 mg/d时。

万古霉素最新指南要点分析和临床知识点延伸 -- 第四篇

五 条

References

1. Men, Peng, et al. “Association between the AUC0-24/MIC Ratio of Vancomycin and Its Clinical Effectiveness: A Systematic Review and Meta-Analysis.” PloS One., vol. 11, no. 1, 2016, p. E0146224.

2. Michael Rybak, Pharm.D., M.P.H., Ben Lomaestro, Pharm.D., John C. Rotschafer, Pharm.D., Robert Moellering, Jr., M.D., William Craig, M.D., Marianne Billeter, Pharm.D., BCPS, Joseph R. Dalovisio, M.D., Donald P. Levine, M.D., Therapeutic monitoring of vancomycin in adult patients: A consensus review of the American Society of Health-System Pharmacists, the Infectious Diseases Society of America, and the Society of Infectious Diseases Pharmacists, American Journal of Health-System Pharmacy, Volume 66, Issue 1, 1 January 2009, Pages 82–98, https://doi-org.offcampus.lib.washington.edu/10.2146/ajhp080434

3. Del Mar Fernández de Gatta Garcia M Revilla N Calvo MV et al. . Pharmacokinetic/pharmacodynamic analysis of vancomycin in ICU patients. Intensive Care Med. 2006; 33:279–85.

4. Adane, Eyob D, et al. “Pharmacokinetics of Vancomycin in Extremely Obese Patients with Suspected or Confirmed Staphylococcus Aureus Infections.” Pharmacotherapy : Official Journal of the American College of Clinical Pharmacy., vol. 35, no. 2, pp. 127–139.

5. Young, Tramaine, et al. “Methodological Study of Vancomycin Dosing in Elderly Patients Using Actual Serum Creatinine Versus Rounded Serum Creatinine.” Drugs in R & D., vol. 17, no. 3, pp. 435–440.

6. Garcia L. 2010. Broth Microdilution MIC Test, p 25-41. In Clinical Microbiology Procedures Handbook, 3rd Edition. ASM Press, Washington, DC. doi: 10.1128/9781555817435.ch5.2

7. Rowena Jenkins, Sarah Maddocks, in Bacteriology Methods for the Study of Infectious Diseases, 2019

8. Rybak, Michael J, et al. “Evaluation of Vancomycin Susceptibility Testing for Methicillin-Resistant Staphylococcus Aureus: Comparison of Etest and Three Automated Testing Methods.” Journal of Clinical Microbiology : JCM., vol. 51, no. 7, pp. 2077–2081.

9. S. J. van Hal, T. P. Lodise, D. L. Paterson, The Clinical Significance of Vancomycin Minimum Inhibitory Concentration in Staphylococcus aureusInfections: A Systematic Review and Meta-analysis, Clinical Infectious Diseases, Volume 54, Issue 6, 15 March 2012, Pages 755–771, https://doi.org/10.1093/cid/cir935

10. Hale, Cory M, et al. “Are Vancomycin Trough Concentrations of 15 to 20 Mg/L Associated With Increased Attainment of an AUC/MIC ≥ 400 in Patients With Presumed MRSA Infection?” Journal of Pharmacy Practice., vol. 30, no. 3, pp. 329–335.

11. Patel N, Pai MP, Rodvold KA, Lomaestro B, Drusano GL, Lodise TP. Vancomycin: we can’t get there from here. Clin Infect Dis. 2011; 52(8):969-974.

12. Pai MP, Neely M, Rodvold KA, Lodise TP. Innovative approaches to optimizing the delivery of vancomycin in individual patients. Adv Drug Deliv Rev. 2014; 77:50-57.

13. UK healthcare. (2017). Clinical Pharmacokinetics Service and Anticoagulation Guidelines (ed 37). Retrieved from https://ukhealthcare.uky.edu/sites/default/files/clinical-pks-anticoagulation-manual.pdf

14. Akers K.S. Cota JM, Chung KK, Renz EM, Mende K, Murray CK. Serum vancomycin levels resulting from continuous or intermittent infusion in critically ill burn patients with or without continuous renal replacement therapy. J Burn Care Res. 2012; 33 (6): e254-e262

15. Reference:Tafelski S, Nachtigall I, Troeger U, et al. Observational clinical study on the effects of different dosing regimens on vancomycin target levels in critically ill patients: continuous versus intermittent application. J Infect Public Health. 2015; 8(4): 355-363

16. Schmelzer TM, Christmas AB, Norton HJ, Heniford BT, Sing RF, Vancomycin Intermittent dosing versus continuous infusion for treatment of ventilator-associated pneumonia in trauma patients. Am Surg. 2013; 79 (11):1185-1190.

17. Hutschala D, Kinstner C, Skhirdladze K, Thalhammer F, Muller M, Tschernko E. Influence of vancomycin on renal function in critically ill patients after cardiac surgery: continuous versus intermittent infusion. Anesthesiology. 2009; 111(2): 356-365.

18. Saugel B, Nwack MC, Hapfelmeler A et al. Continuous intravenous administration of vancomycin in medical intensive care unit patients. J CritCare. 2013; 28(1):9-13.

19. Hanrahan TP, Harlow G, Hutchinson J et al. Vancomycin-associated nephrotoxicity in the critically ill: a retrospective multivariate regression analysis. Crit Care Med 2014; 42(12): 2527-2536.

20. Ingram PR, Lye DC, Fisher DA, Goh WP, Tam VH. Nephrotoxicity of continuous versus intermittent infusion of vancomycin in outpatient parenteral antimicrobial therapy. Int J Antimicrob Agents. 2009; 34(6): 570-574

21. Raverdy V, Ampe E, Hecq JD, Tulkens PM. Stability and compatibility of vancomycin for administration by continuous infusion. J Antimicrob Chemother. 2013; 68 (5): 1179-1182

22. Wade J, Cooper M, Ragan R. Simulated Y-site compatibility of vancomycin and piperacillin-tazobactam. Hosp Pharm. 2015; 50 (5): 376-379.

23. Dosage Calculations. (n.d.). Retrieved from https://step1.medbullets.com/pharmacology/107003/dosage-calculations

24. Crass RL, Dunn R, Hong J, Krop LC, Pai MP. Dosing vancomycin in the super obese: less is more. J Antimicrob Chemother. 2018; 73(11):3081-3086.


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