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相关概念视频

Drug Dosing: Infants and Children01:29

Drug Dosing: Infants and Children

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...
Pharmacokinetics in Pediatric Patients: Overview and Drug Absorption01:23

Pharmacokinetics in Pediatric Patients: Overview and Drug Absorption

Understanding the physiological differences in the pediatric population is crucial for effective pharmacotherapy. Neonates, infants, and children exhibit significant variations in gastric pH, gastric emptying time, intestinal transit time, and biliary function. These variations profoundly affect oral drug absorption, necessitating a nuanced approach to pediatric dosing.Neonates present with a unique physiological profile, having a gastric pH greater than 4 and faster and more irregular gastric...
Pharmacokinetics in Pediatric Patients: Drug Distribution01:17

Pharmacokinetics in Pediatric Patients: Drug Distribution

Drug distribution in the pediatric population exhibits unique challenges and considerations due to the physiological differences between children, particularly neonates and infants, and adults. A crucial aspect of pediatric pharmacology is understanding how these differences impact the pharmacokinetics of various drugs, necessitating age-specific dosing strategies to ensure efficacy and safety.Neonates and infants have a higher total body water content, ~75%–90% of their body weight, compared...
Pharmacokinetics in Pediatric Patients: Drug Metabolism01:24

Pharmacokinetics in Pediatric Patients: Drug Metabolism

In pediatric care, understanding the nuances of hepatic drug metabolism is crucial, as it significantly differs from that of adults. This divergence is primarily due to the developmental stage of drug-metabolizing enzymes, which affects how medications are processed in the body. In neonates, for instance, the activity of Phase I enzymes—critical for the initial breakdown of drugs—is markedly reduced, functioning at just 20–40% of the levels seen in adults. This reduction poses a challenge in...
Pharmacokinetics in Pediatric Patients: Drug Excretion01:26

Pharmacokinetics in Pediatric Patients: Drug Excretion

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...
Drug Dosing in Renal Diseases: Measurement of Serum Creatinine Concentration and Clearance01:25

Drug Dosing in Renal Diseases: Measurement of Serum Creatinine Concentration and Clearance

In healthy individuals, serum creatinine levels remain stable due to a balance between its constant production—primarily from muscle metabolism—and renal excretion. Creatinine is freely filtered by the glomeruli, making it a valuable marker for estimating renal function. When the glomerular filtration rate (GFR) decreases, the kidneys can only eliminate less creatinine, causing serum levels to rise.Serum creatinine concentration is widely used to estimate creatinine clearance (Clcr), a...

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血染色素A的儿科参考范围

Sofie Lieberoth1, Frederik Friis-Hansen1, Lennart Friis-Hansen1,2,3

  • 1Department of Clinical Biochemistry, Odense University Hospital, University of Southern Denmark, Odense, Denmark.

Annals of clinical biochemistry
|September 7, 2023
PubMed
概括

这项研究为儿童和青少年建立了血染色素A (CgA) 参考间隔,这对于诊断神经内分泌新生瘤 (NEN) 至关重要. 这些发现提供了特定年龄的范围,以帮助准确查和监测儿科人口中的NEN.

关键词:
免疫测试是一种免疫测试.分析对象是分析对象临床研究临床研究.实验室方法 实验室方法类荷尔蒙 类荷尔蒙这些瘤标志物是瘤标志物.

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科学领域:

  • 生物化学 生物化学
  • 儿科瘤学 儿科瘤学
  • 临床诊断 临床诊断 临床诊断

背景情况:

  • 神经内分泌瘤 (NEN) 是一种罕见的,异质的瘤,起源于内分泌细胞.
  • 血染色素A (CgA) 是所有年龄组的NEN查,诊断和监测的关键生物标志物.
  • 确定儿童CgA的特定年龄参考间隔对于准确的临床解释至关重要.

研究的目的:

  • 在健康的儿童和青少年中确定血CgA参考间隔.
  • 分析血CgA度的年龄相关变化.
  • 评估血CgA测量的个体内变化.

主要方法:

  • 在268名健康儿童和青少年的队列中,使用Brahms Kryptor试验测量了血CgA水平.
  • 包括来自家族癌症查和过敏查计划的数据.
  • 个人内部的变化是通过对时间的反复测量来计算的,数据是使用R.中的参考间隔包进行分析的.

主要成果:

  • 血CgA度随着年龄的增长而下降,不同儿科年龄组 (0-3,4-13岁和14-19岁) 有不同的范围.
  • 儿科CgA参考间隔的上限范围在6~118μg/L之间,根据年龄组而异.
  • 个体内变化的中位数为14%,表明测量稳定性良好.

结论:

  • 已建立的血CgA参考间隔对于查,诊断和监测儿科NEN非常有价值.
  • 这些特定年龄的间隔提高了儿童和青少年CgA解释的准确性.
  • 这些间隔的临床应用应考虑血CgA作为生物标志物的固有限制.