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Related Concept Videos

Pharmacokinetics in Pediatric Patients: Drug Excretion01:26

Pharmacokinetics in Pediatric Patients: Drug Excretion

191
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...
191
Dosage Interval and Administration Route: Determination Methods01:19

Dosage Interval and Administration Route: Determination Methods

193
A medication’s effectiveness largely depends on its appropriate dosage and the route of administration. Dosage ensures that a sufficient drug concentration is maintained in the bloodstream to elicit the desired therapeutic effect without causing toxicity. The route of administration affects the drug's bioavailability, rate of absorption, and onset of action, which are crucial for achieving optimal therapeutic outcomes. Drug dosage calculations are critical to tailoring therapy to...
193
Determination of Multiple Dosing Parameters: Steady-State, Minimum and Maximum Concentrations01:15

Determination of Multiple Dosing Parameters: Steady-State, Minimum and Maximum Concentrations

209
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...
209
Urine Studies II: Urine Culture and Sensitivity Test01:26

Urine Studies II: Urine Culture and Sensitivity Test

736
A urine culture and sensitivity test is a diagnostic procedure used to identify urinary tract bacterial infections and determine the most effective antibiotics for treatment. This test is generally preferred when a patient shows manifestations of a urinary tract infection, such as frequent or painful urination, cloudy or foul-smelling urine, or lower abdominal pain.Purpose of the TestThe primary goals of a urine culture and sensitivity test are to:Determine the specific bacteria causing the...
736
Pharmacokinetics in Pediatric Patients: Overview and Drug Absorption01:23

Pharmacokinetics in Pediatric Patients: Overview and Drug Absorption

225
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...
225
Pharmaceutical Alternatives: Stability-Related Therapeutic Nonequivalence01:22

Pharmaceutical Alternatives: Stability-Related Therapeutic Nonequivalence

162
Generic intravenous (IV) drugs are considered bioequivalent to their branded counterparts due to their 100% bioavailability upon administration. However, variations in stability among different drug products can significantly influence their therapeutic performance, even if they are pharmaceutically equivalent.Cefuroxime, a prophylactic antimicrobial, is often used as a single-dose IV injection for patients undergoing coronary artery bypass grafting surgery. A 3 g dose typically provides...
162

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Related Experiment Video

Updated: Jan 7, 2026

Multiplex Therapeutic Drug Monitoring by Isotope-dilution HPLC-MS/MS of Antibiotics in Critical Illnesses
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Reevaluating the 1 Hour Benchmark: Associations Between Antibiotic Timing and Mortality in Pediatric Sepsis.

Alexandra H Baker1,2, Christopher M Pruitt3, Paul C Mullan4

  • 1Division of Emergency Medicine, Department of Pediatrics, Boston Children's Hospital, Boston, MA, USA.

Clinical Pediatrics
|December 26, 2025
PubMed
Summary

In pediatric sepsis, delaying antibiotics beyond 60 minutes was linked to lower 30-day mortality, not higher. This suggests current time-based sepsis guidelines may need reevaluation for better patient outcomes.

Keywords:
antibiotic timingemergency caremortalitysepsissepsis bundleseptic shock

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Area of Science:

  • Pediatric Emergency Medicine
  • Infectious Diseases
  • Clinical Outcomes Research

Background:

  • Sepsis is a life-threatening condition requiring prompt treatment.
  • Current guidelines often emphasize rapid antibiotic administration in pediatric sepsis.
  • The optimal timing for antibiotic initiation in pediatric sepsis remains debated.

Purpose of the Study:

  • To evaluate the association between time to antibiotic administration and clinical outcomes in pediatric sepsis.
  • To determine if adherence to strict time-based antibiotic thresholds impacts mortality and other outcomes.
  • To inform evidence-based guidelines for pediatric sepsis management.

Main Methods:

  • Retrospective cohort study of 6153 pediatric sepsis patients from 19 EDs (2013-2016).
  • Antibiotic timing analyzed continuously and dichotomously (≤60 vs >60 minutes from sepsis recognition).
  • Primary outcome: 3- and 30-day all-cause mortality; secondary: vasoactive agent use, ICU/hospital length of stay.

Main Results:

  • Longer time to antibiotics was associated with *lower* 30-day mortality in adjusted analyses.
  • No significant association found between time to antibiotics and 3-day mortality or secondary outcomes.
  • Patients receiving antibiotics >60 minutes from recognition had significantly lower 30-day mortality risk.

Conclusions:

  • Rigid, time-based antibiotic administration thresholds may not improve pediatric sepsis outcomes.
  • Findings challenge the universal application of rapid antibiotic timing in all pediatric sepsis cases.
  • Prospective studies are needed to refine guidelines and optimize sepsis management strategies.