在儿科瘤学患者中优化 جنت米辛剂量
Abdulrahman Alwhaibi1, Mohammed M Almutairi2, Sary Alsanea2
1From the Department of Clinical Pharmacy.
The Pediatric infectious disease journal
|January 6, 2026
概括
在儿科瘤学患者中,根他米辛的剂量需要个性化,这是由于可变的药理动力学和增加干净率的高. 最佳的剂量策略对于实现治疗目标和最大限度地降低该人群中的毒性至关重要.
科学领域:
- 药理学 药理学是指药理学的学科.
- 儿科瘤学 儿科瘤学
- 临床药房 临床药房
背景情况:
- 甘他是儿童格兰氏阴性感染的关键抗生素.
- 由于恶性瘤和化疗,在儿科瘤患者中, جنت米辛的药理动力学 (PK) 是高度可变的.
- 开发一个人群PK模型对于优化 gentamicin 剂量在这个群体中至关重要.
研究的目的:
- 在儿科瘤学患者中开发 gentamicin 的人口 PK 模型.
- 为了确定最佳的 gentamicin 剂量策略,以提高疗效和安全性.
- 调查瘤学状态对 gentamicin PK 的影响.
主要方法:
- 对儿科患者 (1个月至14岁) 进行的回顾性多中心研究,采用 gentamicin 治疗药物监测数据.
- 纳入共变量的人口PK建模:年龄,体重,无脂肪质量,GFR和瘤状况.
- 蒙特卡洛模拟以评估实现目标的概率 (Cmax/MIC ≥8) 和安全性 (通道<1 mg/L).
主要成果:
- 一个带有线性排泄的单间模型描述了 gentamicin 的处置.
- 体重,年龄和GFR显著影响了清除;瘤学状况没有.
- 脏清除增加在瘤病患者中更为常见 (33.7%对21.0%).
- 6毫克/公斤的剂量达到≥90%的MIC≤1毫克/升的目标,但10毫克/公斤不足以达到MIC=2毫克/升.
结论:
- 瘤状况对 gentamicin PK 的影响很小.
- 增加清除的高患病率需要个性化剂量.
- 在儿科瘤学中,PK建模和治疗药物监测对于 جنت米辛的有效性和安全性至关重要.
相关概念视频
01:15Determination of Multiple Dosing Parameters: Steady-State, Minimum and Maximum Concentrations
231
Gentamicin, an aminoglycoside antibiotic, is commonly administered via intermittent intravenous infusion to treat severe infections. An intermittent one-hour infusion of gentamicin, administered at eight-hour intervals, allows for precise control of plasma drug concentrations, minimizing toxicity while ensuring therapeutic efficacy. Pharmacokinetic principles govern the dynamics of plasma concentrations and can be mathematically described using specific equations.The plasma drug concentration...
231
01:26Pharmacokinetics in Pediatric Patients: Drug Excretion
207
In pediatric medicine, understanding the renal function and drug elimination nuances is crucial for administering safe and effective treatments. Newborns, in particular, display markedly slower renal functions than adults, profoundly affecting how drugs are cleared from their bodies. This slower drug clearance requires clinicians to extend the dosing intervals for many medications to prevent drug accumulation and toxicity while ensuring therapeutic efficacy.One key area where these adjustments...
207
01:20Estimation of k and VD of Aminoglycosides
212
Aminoglycosides are a class of antibiotics used to treat various bacterial infections. Clinicians must determine the elimination rate constant (k) and volume of distribution (VD) to optimize therapeutic efficacy and minimize toxicity. The k value represents the rate at which the drug is removed from the body, and the VD reflects the degree to which the drug distributes into body tissues. Accurately estimating these parameters allows healthcare professionals to tailor drug dosing to individual...
212
01:29Drug Dosing: Infants and Children
248
Pediatric patient dosages diverge from adults due to disparities in body surface area, total body water, and extracellular fluid per kilogram of body weight. The dosing regimen considers the variations in pharmacokinetics and pharmacology across distinct age groups, encompassing preterm newborns, infants, young children, older children, and adolescents. Calculation of pediatric patient doses is predicated on determining body surface area, which exhibits a superior correlation with the child's...
248
01:11Renal Failure: Dose Adjustments
429
In patients with renal impairment, drugs undergo significant changes in their pharmacokinetics, which require dosage adjustments to ensure safe and effective therapy.
Reduced renal clearance and elimination rate are common outcomes of renal impairment. These alterations lead to a prolonged elimination half-life and an altered apparent volume of distribution for drugs. As a result, dosage adjustments are typically necessary to maintain optimal drug levels in the body.
However, dosage adjustments...
Reduced renal clearance and elimination rate are common outcomes of renal impairment. These alterations lead to a prolonged elimination half-life and an altered apparent volume of distribution for drugs. As a result, dosage adjustments are typically necessary to maintain optimal drug levels in the body.
However, dosage adjustments...
429
01:15Drug Dosing: Geriatric Patients
219
Elderly individuals encompass a diverse population with varying degrees of age-related physiological changes. Defining the elderly presents challenges, as the geriatric population is often arbitrarily categorized as individuals older than 65. However, many individuals in this group lead active and healthy lives, with an increasing number surpassing 85 years and falling into the older elderly category. Physiological changes associated with aging impact performance capacity and homeostatic...
219