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Related Concept Videos

Disorders of Leukocytes01:27

Disorders of Leukocytes

Leukocyte disorders can lead to either leukopenia, characterized by an abnormally low leukocyte count, or leukocytosis, marked by a very high leukocyte number.
Leukopenia may result from bone marrow disorders, autoimmune diseases, and infectious diseases. For example, conditions such as multiple myeloma and aplastic anemia can impair the bone marrow's ability to produce adequate leukocytes. Similarly, autoimmune diseases like lupus and viral infections such as HIV can prompt the immune system...
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...
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 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: 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...
Leishmaniasis01:30

Leishmaniasis

Leishmaniasis is a protozoal disease caused by species of the genus Leishmania and transmitted through the bite of infected female sandflies. The parasite exists in two principal morphological forms during its life cycle. A sandfly acquires intracellular amastigotes from an infected reservoir host, such as a dog. Within the sandfly, these forms differentiate into motile, flagellated promastigotes. During a subsequent blood meal, promastigotes are injected into the human host, where they...

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Separation of Immune Cell Subpopulations in Peripheral Blood Samples from Children with Infectious Mononucleosis
08:44

Separation of Immune Cell Subpopulations in Peripheral Blood Samples from Children with Infectious Mononucleosis

Published on: September 7, 2022

[Leucopenia in children].

Olli Lohi1, Kim Vettenranta

  • 1TAYS, Lasten veri- ja syöpätautien yksikkö, Tampere.

Duodecim; Laaketieteellinen Aikakauskirja
|September 6, 2011
PubMed
Summary
This summary is machine-generated.

Decreased white blood cell counts in children often stem from low neutrophils, typically temporary with viral infections. Prolonged cases may indicate immune issues or serious conditions like congenital myelopathy.

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Area of Science:

  • Pediatric Hematology
  • Immunology

Context:

  • Leukopenia, characterized by decreased white blood cell counts, is a common clinical finding in children.
  • Neutropenia, a specific type of leukopenia involving reduced neutrophils, is frequently observed.

Purpose:

  • To elucidate the common and rare causes of leukopenia in pediatric patients.
  • To highlight the association between neutropenia and infection risk.

Summary:

  • Decreased leukocyte values in children are predominantly caused by a reduction in neutrophilic granulocytes, often a transient condition linked to viral infections.
  • In infants and early childhood, immune-mediated neutropenias can lead to prolonged leukopenia.
  • Rare causes of leukopenia encompass serious conditions such as congenital myelopathy, specific syndromes, and malignant hematological diseases.
  • Neutropenia significantly increases the risk of infection, particularly when bone marrow production defects are the underlying etiology.

Impact:

  • Provides a comprehensive overview of pediatric leukopenia, aiding in differential diagnosis.
  • Emphasizes the clinical significance of neutropenia in children regarding infection susceptibility.
  • Informs clinicians about the spectrum of causes, from benign transient conditions to severe underlying diseases.