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Related Concept Videos

Alterations in Muscle Tone ll01:12

Alterations in Muscle Tone ll

31
Alterations in muscle tone are common manifestations of neurological disorders and reflect dysfunction within different nervous system regions. Spasticity, paratonia, and dystonia represent distinct forms of hypertonia, each with unique mechanisms, clinical features, and diagnostic importance.CharacteristicsSpasticity happens from upper motor neuron lesions and is characterized by velocity-dependent resistance to passive movement. Clinical features include:Exaggerated deep tendon reflexesClonus...
31
Drug Dosing: Geriatric Patients01:15

Drug Dosing: Geriatric Patients

400
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...
400
Pharmacodynamics in Geriatric Patients: Effects of Age01:27

Pharmacodynamics in Geriatric Patients: Effects of Age

376
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...
376
Alterations in Muscle Tone lll01:11

Alterations in Muscle Tone lll

36
Rigidity and myotonia are distinct abnormalities of muscle tone that affect resistance and relaxation during movement. Although both involve altered muscle contraction, they arise from different neurological and muscular mechanisms.CharacteristicsRigidity is characterized by uniform resistance to passive movement across the entire range, independent of speed, affecting flexors and extensors equally. It may appear as lead-pipe rigidity (smooth, constant resistance) or cogwheel rigidity...
36
Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Excretion01:18

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Excretion

358
In geriatric patients, renal physiology undergoes significant changes, including diminished renal blood flow and a lower glomerular filtration rate (GFR), leading to alterations in medication clearance. Drugs such as aminoglycoside antibiotics, lithium, and digoxin, which rely on glomerular filtration for removal from the body, particularly impact pharmacokinetics. These drugs tend to have slower clearance rates in older adults, necessitating careful dosage considerations.Evaluation of renal...
358
Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Distribution01:00

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Distribution

387
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...
387

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[Catatonia in the elderly].

Yuhei Chiba1, Toshinari Odawara

  • 1Department of Psychiatry, Yokohama City University Hospital.

Nihon Rinsho. Japanese Journal of Clinical Medicine
|November 23, 2013
PubMed
Summary

Catatonia can manifest in elderly patients due to underlying medical conditions like vascular dementia or Lewy body dementia. Prompt medical evaluation is crucial for diagnosing and treating catatonia in older adults.

Area of Science:

  • Neurology
  • Geriatrics
  • Psychiatry

Background:

  • Catatonia is a complex syndrome with diverse motor and behavioral symptoms.
  • It is associated not only with psychiatric disorders like schizophrenia but also with general medical conditions, mood disorders, and substance-related disorders.
  • Identifying underlying medical causes of catatonia is essential, especially in elderly patients.

Observation:

  • Two elderly patients presenting with catatonia were analyzed.
  • Case 1: Catatonia associated with vascular dementia and anti-phospholipid antibody syndrome.
  • Case 2: Catatonia associated with dementia with Lewy bodies and Hashimoto's encephalopathy.

Findings:

  • Catatonia in elderly individuals can be a symptom of serious underlying medical conditions, including autoimmune disorders and neurodegenerative diseases.

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  • The presented cases highlight the link between specific dementias (vascular dementia, dementia with Lewy bodies) and catatonia.
  • Rare autoimmune conditions like anti-phospholipid antibody syndrome and Hashimoto's encephalopathy were identified as potential causes.
  • Implications:

    • Emphasizes the importance of comprehensive medical workup for catatonia in the elderly to uncover treatable medical etiologies.
    • Suggests that early diagnosis and management of underlying conditions can improve outcomes for catatonic elderly patients.
    • Highlights the need for careful consideration of treatment options like benzodiazepines and electroconvulsive therapy in older adults with catatonia, considering potential risks.