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Dose Response Curve: Conventional Versus Nonmonotonic01:21

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The correlation between a drug's dosage and its impact on a biological system is a cornerstone of pharmacology and toxicology. Conventional dose–response curves, which include graded and quantal relationships, are key to this understanding. Graded dose–response curves depict the spectrum of a biological reaction to different doses within an individual, indicating that as the drug dosage increases, so does the intensity of the response. On the other hand, quantal dose–response relationships...
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Drug toxicities can be stratified into pharmacological, pathological, or genotoxic based on their mechanisms. The incidence and severity of these toxicities generally increase with the drug's concentration in the body and exposure time.Pharmacological toxicity is evident when the therapeutic effects of drugs overshoot into adverse reactions in a predictable, dose-dependent manner. Central nervous system (CNS) depression from barbiturates is a classic example, with effects escalating from...
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Determining the optimal dose size and dosing frequency in pharmacotherapy is crucial for achieving therapeutic effectiveness while minimizing adverse effects. This article explores the methodologies employed in determining these parameters, focusing on their significance and interplay to tailor dosing regimens.Dose Size: Dose size refers to the amount of a drug administered in a single dose. It is determined based on the drug's pharmacodynamics and pharmacokinetics properties and...
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Small dose... big poison.

George Braitberg1, Ed Oakley

  • 1Monash University, Southern Health, Victoria, Australia. george.braitberg@southernhealth.org.au

Australian Family Physician
|February 9, 2011
PubMed
Summary
This summary is machine-generated.

Recognizing potentially fatal toxic exposures in children is crucial. This guide aids general practitioners by detailing signs, symptoms, and onset times of dangerous substances, leveraging poison control data.

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Area of Science:

  • Pediatric Toxicology
  • Emergency Medicine
  • Public Health

Background:

  • Identifying all toxic substances is challenging, but some exposures are acutely fatal, especially in children.
  • Poison control center data can help identify high-risk toxic exposures.
  • Children are particularly vulnerable to certain toxic substances, even in small doses.

Purpose of the Study:

  • To equip general practitioners with knowledge to identify potential toxic substance exposures in children.
  • To provide a resource for recognizing critical pediatric poisoning cases.

Main Methods:

  • Utilizing data from poison control centers to identify common and dangerous exposures.
  • Compiling information on signs, symptoms, and onset times of toxic ingestions.
  • Reviewing available data on fatal doses and observation periods for specific toxins.

Main Results:

  • Detailed signs and symptoms of various toxic exposures in children are presented.
  • The typical time of onset for symptoms following exposure is identified.
  • Information on fatal doses and recommended observation periods is provided for select substances.

Conclusions:

  • This article serves as a clinical guide for recognizing acute pediatric poisonings.
  • It highlights the importance of prompt identification of toxic exposures for timely intervention.
  • Readers are directed to consult Poison Information Services for management and disposition advice.