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Related Concept Videos

Clinical Trials: Overview01:11

Clinical Trials: Overview

Clinical development focuses on how the drug will interact with the human body and encompasses four key phases of clinical trials, each serving a specific purpose in assessing the safety and effectiveness of new drugs. These phases overlap and build upon one another. Phase I involves a small group of healthy volunteers (typically 20-80 individuals) or, in cases where significant toxicity is expected, patients with the targeted disease, such as cancer or AIDS. The volunteers are tested for...
Clinical Trials01:16

Clinical Trials

Clinical trials are prospective experimental studies conducted on humans to determine the safety and efficacy of treatments, drugs, diet methods, and medical devices. Using statistics in clinical trials enables researchers to derive reasonable and accurate conclusions from the collected data, allowing them to make wise decisions in uncertain situations. In medical research, statistical methods are crucial for preventing errors and bias.
There are four phases in a clinical trial. A phase one...
Therapeutic Drug Monitoring: Drug Analysis Methods01:26

Therapeutic Drug Monitoring: Drug Analysis Methods

Therapeutic Drug Monitoring (TDM) is a clinical practice that measures specific drug levels in a patient's blood or body tissues to tailor drug therapy effectively. This monitoring is critical for managing drugs with narrow therapeutic indices like digoxin and phenytoin, ensuring they are both safe and effective. For instance, monitoring theophylline levels in asthma patients involves precision and sensitivity to adjust doses according to individual responses to therapy, ensuring efficacy and...
Drug Administration and Therapy Phases: Overview01:26

Drug Administration and Therapy Phases: Overview

Drugs, the chemical agents used in diagnosing, treating, or preventing diseases, undergo a four-phase process of development: pharmaceutic, pharmacokinetics, pharmacodynamics, and therapeutic.
The pharmaceutical phase focuses on leveraging the physicochemical properties of the drug to design and manufacture an effective product. Variants include orally administered tablets or capsules, topical creams or ointments, and parenteral-delivery solutions or emulsions.
The pharmacokinetic phase...
Therapeutic Drug Monitoring: Affecting Factors01:29

Therapeutic Drug Monitoring: Affecting Factors

Therapeutic Drug Monitoring (TDM) is the clinical practice of measuring specific drug levels in a patient's blood or body tissues to manage and optimize therapy. TDM is crucial for drugs with narrow therapeutic windows, like warfarin and phenytoin, where incorrect doses can lead to treatment failure or severe side effects. This monitoring ensures the dosage administered is within a safe and effective range. The factors affecting therapeutic drug monitoring include:Patient-Specific Factors:a.
Pulmonary Tuberculosis V01:28

Pulmonary Tuberculosis V

Medical management of tuberculosis (TB) patients involves a comprehensive approach that includes diagnosis, treatment, and monitoring. The specific strategies can vary depending on the type of tuberculosis (latent or active), the patient's overall health status, and other considerations.
Latent tuberculosis infection occurs when TB bacteria are present in a person's body, but are not causing illness or symptoms. It is not contagious, and preventive treatment is crucial to avoid the progression...

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Related Experiment Video

Updated: Jul 6, 2026

High-throughput and Comprehensive Drug Surveillance Using Multisegment Injection-Capillary Electrophoresis-Mass Spectrometry
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Published on: April 23, 2019

Long-term drug prevention trials.

Curtis L Meinert1

  • 1Department of Epidemiology, The Johns Hopkins University, Bloomberg School of Public Health, 615 North Wolfe Street, Baltimore Maryland 21205, USA. cmeinert@jhsph.edu

Clinical Trials (London, England)
|April 1, 2008
PubMed
Summary
This summary is machine-generated.

Randomized trials for disease prevention and treatment share core elements but differ significantly in risk-benefit analysis. Prevention trials face unique challenges due to the delayed onset of benefits versus immediate risks.

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Area of Science:

  • Clinical Trials Methodology
  • Preventive Medicine
  • Drug Development

Background:

  • Randomized trials are fundamental research tools for both disease treatment and prevention.
  • Despite shared principles, distinct philosophical and practical considerations differentiate these trial types.

Purpose of the Study:

  • To elucidate the unique challenges and considerations in designing and conducting randomized prevention trials compared to treatment trials.
  • To highlight the complexities of risk-benefit assessment in long-term prevention studies.

Main Methods:

  • Comparative analysis of randomized trial methodologies for treatment versus prevention.
  • Exploration of specific differences in risk-benefit calculus, study design, and operational aspects.

Main Results:

  • Prevention trials present a unique risk-benefit calculus due to the temporal separation of risk accrual and potential benefit realization.
  • Key differences include choices in study treatments, outcome measures, participant recruitment strategies, and monitoring protocols.

Conclusions:

  • The distinct nature of prevention trials necessitates tailored approaches to trial design, ethical considerations, and decision-making regarding trial continuation.
  • Understanding these differences is crucial for the successful execution of public health and medical research initiatives.