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Hyperkalemic periodic paralysis

J M Naylor1

  • 1Department of Veterinary Internal Medicine, University of Saskatchewan, Western College of Veterinary Medicine, Saskatoon, Canada.

The Veterinary Clinics of North America. Equine Practice
|April 1, 1997
PubMed
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Hyperkalemic periodic paralysis is a genetic equine disease linked to the Impressive bloodline. Affected horses experience muscle spasms and fasciculations due to high blood potassium levels.

Area of Science:

  • Equine genetics
  • Animal science
  • Veterinary medicine

Background:

  • Hyperkalemic periodic paralysis (HYPP) is an autosomal codominant genetic disorder.
  • This condition is prevalent in horses descending from the Quarter Horse sire, Impressive.
  • A specific muscular phenotype associated with HYPP has been favored in show settings, accelerating disease spread.

Purpose of the Study:

  • To describe the genetic basis and clinical presentation of hyperkalemic periodic paralysis in horses.
  • To highlight the role of selective breeding and show judging in the dissemination of HYPP.
  • To outline the characteristic clinical signs and treatment responses for HYPP.

Main Methods:

  • Review of genetic inheritance patterns for hyperkalemic periodic paralysis.

Related Experiment Videos

  • Clinical case observations of affected horses.
  • Analysis of the link between equine phenotype selection and disease prevalence.

    • Main Results:

    • HYPP is an autosomal codominant disease.
    • Horses with Impressive lineage are disproportionately affected.
    • Clinical signs include muscle fasciculation and spasms, responsive to hyperkalemia treatment.

    Conclusions:

    • Hyperkalemic periodic paralysis is a significant genetic concern in specific horse populations.
    • Show industry practices have contributed to the widespread occurrence of HYPP.
    • Understanding the genetics and clinical signs is crucial for managing affected horses.