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Polydipsia screening tool.

Sheila A Reynolds1, Marlene Wellman Schmid, Marion E Broome

  • 1Nursing Solutions Consultants, LLC, Mequon, WI 53902, USA. Sheila@nscllc.com

Archives of Psychiatric Nursing
|April 24, 2004
PubMed
Summary

The Polydipsia Screening Tool (PST) effectively identifies excessive liquid intake in psychiatric patients. This validated tool demonstrates good reliability and accuracy for screening polydipsia in nursing home residents.

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Area of Science:

  • Psychiatry
  • Nursing
  • Clinical Psychology

Background:

  • Polydipsia, excessive liquid consumption, is prevalent in schizophrenia patients.
  • Accurate screening tools are crucial for managing this condition.
  • The Polydipsia Screening Tool (PST) was developed to aid in identification.

Purpose of the Study:

  • To evaluate the psychometric properties of the 17-item Polydipsia Screening Tool (PST).
  • To assess the reliability and validity of the PST in a clinical setting.

Main Methods:

  • The PST was administered to 70 psychiatric residents in a nursing home setting.
  • Psychometric properties including interrater reliability, test-retest agreement, internal consistency, sensitivity, and specificity were analyzed.
  • Validity was assessed by comparing PST results with medical record data.

Main Results:

  • The PST demonstrated strong interrater reliability (ICC=0.84) and high test-retest agreement (92.4%).
  • Internal consistency was good (0.79), with sensitivity at 80% and specificity at 68%.
  • PST validity was supported by correlations with documented polydipsia, low serum sodium, and low specific gravity.

Conclusions:

  • The Polydipsia Screening Tool (PST) is a reliable and valid instrument for screening polydipsia in psychiatric residents.
  • The PST can aid clinicians in identifying individuals with excessive liquid intake, facilitating timely intervention.

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