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Related Concept Videos

General Anesthesia: Overview01:24

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Anesthesia is a medical procedure that uses drugs for CNS suppression to enable painless surgeries and procedures. The selection of anesthetics is influenced by their pharmacokinetic properties, side effects, and patient characteristics. Various types of anesthesia include general, local, regional, spinal, and inhalational.
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Various sedation levels offer significant advantages in facilitating procedural interventions for patients undergoing medical or invasive surgical procedures. These levels span from anxiolysis to general anesthesia, providing a spectrum of sedative effects to cater to specific patient needs. Anxiolysis reduces anxiety and is achieved through minimal sedation, enabling patients to remain awake and responsive while feeling more at ease during the procedure. This level can benefit minor...
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Elderly individuals encompass a diverse population with varying degrees of age-related physiological changes. Defining the elderly presents challenges, as the geriatric population is often arbitrarily categorized as individuals older than 65. However, many individuals in this group lead active and healthy lives, with an increasing number surpassing 85 years and falling into the older elderly category. Physiological changes associated with aging impact performance capacity and homeostatic...
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Pharmacodynamics in Geriatric Patients: Effects of Age01:27

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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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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...
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Drug distribution in the human body is influenced by several factors, including plasma protein concentration, body composition, blood flow, tissue-protein concentration, and tissue fluid pH. Among these, changes in plasma protein concentration and body composition due to aging significantly affect how drugs are distributed within the body. Specifically, aging is associated with a decrease in albumin levels by about 10% and an increase in α1-acid glycoprotein levels. These alterations are...
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Related Experiment Video

Updated: May 5, 2026

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Should general anaesthesia be avoided in the elderly?

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Elderly patients experience more brain issues after surgery and anesthesia, leading to higher risks. This review covers causes, diagnosis, and prevention of postoperative delirium and cognitive dysfunction in older adults.

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Area of Science:

  • Geriatric Medicine
  • Neuroscience
  • Anesthesiology

Background:

  • Surgery and anesthesia disproportionately affect the aging brain compared to younger individuals.
  • Postoperative delirium and cognitive dysfunction are more prevalent in the elderly, impacting recovery and survival.
  • These cognitive impairments prolong rehabilitation and increase morbidity and mortality in elderly surgical patients.

Purpose of the Study:

  • To review the causes of postoperative delirium and cognitive dysfunction in the elderly.
  • To focus on the roles of anesthesia and sedation in these adverse effects.
  • To discuss diagnostic methods, monitoring techniques, and preventive treatment strategies.

Main Methods:

  • Literature review focusing on studies concerning elderly patients undergoing surgery and anesthesia.
  • Analysis of etiological factors contributing to cognitive decline post-surgery.
  • Examination of current diagnostic, monitoring, and therapeutic approaches.

Main Results:

  • Anesthesia and sedation are significant contributors to postoperative cognitive issues in the elderly.
  • Early diagnosis and monitoring are crucial for managing cognitive decline.
  • Preventive strategies can mitigate the incidence and severity of these conditions.

Conclusions:

  • Postoperative delirium and cognitive dysfunction pose serious risks to elderly surgical patients.
  • Understanding the etiological factors, particularly related to anesthesia, is key.
  • Implementing effective diagnostic and preventive strategies is essential for improving outcomes in this population.