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Related Concept Videos

Pharmacodynamics in Geriatric Patients: Effects of Age01:27

Pharmacodynamics in Geriatric Patients: Effects of Age

129
Age-related pharmacokinetic changes are extensively documented, but understanding age-related pharmacodynamic alterations is relatively limited. This knowledge gap can be partly attributed to the complexity of developing appropriate measures of drug responses compared to bioanalytical methods for determining drug concentrations.Most information regarding age-related differences in human pharmacodynamics originates from cross-sectional studies. However, these studies assume that observed mean...
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Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Absorption01:22

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As individuals age, their body's physiology evolves, affecting drug pharmacokinetics. The most apparent changes occur in the gastrointestinal tract, where an increase in gastric pH, a delay in gastric emptying, and a reduction in gastrointestinal motility are observed. Remarkably, these changes do not substantially modify the absorption of orally administered drugs, particularly those absorbed via passive diffusion.Transdermal drug delivery emerges as a highly viable method for older adults due...
142
Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Metabolism01:18

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Metabolism

125
Geriatric patients show significant variation in how their bodies process medications, which can change how effective and safe treatments are. The liver is the primary organ where drug metabolism occurs, involving two main types of chemical reactions: phase I and II. Phase I metabolism is driven by the cytochrome P450 enzyme system, which includes key types such as CYP3A, CYP2D6, and CYP2C9. Research indicates that while aging doesn't notably alter the levels or activity of these enzymes, it...
125

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Related Experiment Video

Updated: Dec 16, 2025

Use of a Foot-Induced Digitally Controlled Resistance Device for Functional Magnetic Resonance Imaging Evaluation in Patients with Foot Paresis
08:55

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Pedal Misapplication: Interruption Effects and Age-Related Differences.

Kunihiro Hasegawa1, Motohiro Kimura1, Yuji Takeda1

  • 113508National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan.

Human Factors
|July 3, 2020
PubMed
Summary
This summary is machine-generated.

Longer interruptions in driving tasks increase pedal misapplication frequency, particularly for older drivers. This finding highlights risks associated with delayed responses in critical driving situations.

Keywords:
accidents, human erroragedistractiondriver behaviorrisk assessment

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Area of Science:

  • Human Factors
  • Traffic Safety
  • Cognitive Psychology

Background:

  • Pedal misapplication, involving unintended use of brake or accelerator pedals, is a significant cause of severe traffic accidents.
  • Older drivers are particularly vulnerable to pedal misapplication incidents.

Purpose of the Study:

  • To investigate the relationship between the duration of interruption in a driving-related task and the frequency of pedal misapplication.
  • To determine if this relationship is more pronounced in older drivers compared to younger drivers.

Main Methods:

  • A pedal choice response task (brake or accelerator) was administered to 40 younger and 40 older adults.
  • The task was preceded by an interruption task (touch number task) with varying durations (30s and 120s).

Main Results:

  • Pedal misapplications were significantly more frequent following longer interruptions (120s) compared to shorter ones (30s).
  • The increase in pedal misapplications with longer interruption durations was more substantial in older participants.

Conclusions:

  • Extended interruptions in driving tasks elevate the risk of pedal misapplication, especially among older adults.
  • Findings enhance understanding of conditions contributing to pedal misapplication events in drivers.