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Related Experiment Videos

HIV Dementia Scale: a rapid screening test

C Power1, O A Selnes, J A Grim

  • 1Department of Neurology, Johns Hopkins University, Baltimore, Maryland.

Journal of Acquired Immune Deficiency Syndromes and Human Retrovirology : Official Publication of the International Retrovirology Association
|March 1, 1995
PubMed
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The new HIV Dementia Scale (HDS) accurately identifies HIV dementia, outperforming the MMSE. Early diagnosis of HIV dementia improves patient management and treatment strategies.

Area of Science:

  • Neurology
  • Infectious Diseases
  • Psychiatry

Background:

  • HIV dementia affects up to 20% of HIV-infected individuals, impacting cognitive function.
  • Early and accurate diagnosis of HIV dementia is crucial for effective treatment and management.
  • Existing screening tools may not be sufficiently sensitive for detecting HIV dementia.

Purpose of the Study:

  • To develop and validate a new instrument, the HIV Dementia Scale (HDS), for the early identification of HIV dementia.
  • To compare the efficacy of the HDS against established screening tools like the MMSE and Grooved Pegboard test.

Main Methods:

  • Evaluated 152 outpatients across five groups: HIV-seronegative, asymptomatic HIV-seropositive, AIDS (nondemented), mildly demented, and severely demented.
  • Administered the newly developed HIV Dementia Scale (HDS), Mini-Mental State Exam (MMSE), and Grooved Pegboard (PB) test.

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  • Utilized Receiver-Operating Characteristic (ROC) curve analysis to determine the optimal HDS cut-off score for identifying HIV dementia.

    • Main Results:

    • The HDS demonstrated a high efficiency of 84% in identifying HIV dementia, surpassing the MMSE (72%) and comparable to the PB test (86%).
    • An optimal HDS cut-off score of <= 10 yielded a sensitivity of 80%, specificity of 91%, and positive predictive value of 78%.
    • Mean HDS scores significantly differed across patient groups, reflecting varying degrees of cognitive impairment.

    Conclusions:

    • The HIV Dementia Scale (HDS) is a reliable, quantitative, and effective tool for identifying HIV dementia.
    • The HDS is superior to the MMSE for bedside screening of HIV dementia.
    • The HDS facilitates earlier diagnosis, enabling optimized therapeutic and management decisions for individuals with HIV dementia.