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Related Experiment Video

Updated: May 12, 2026

Observational Study Protocol for Repeated Clinical Examination and Critical Care Ultrasonography Within the Simple Intensive Care Studies
10:38

Observational Study Protocol for Repeated Clinical Examination and Critical Care Ultrasonography Within the Simple Intensive Care Studies

Published on: January 16, 2019

Implementing an obstetric triage acuity scale: interrater reliability and patient flow analysis.

David S Smithson1, Rachel Twohey, Tim Rice

  • 1London Health Sciences Centre, Western University, Department of Obstetrics and Gynaecology, London, Ontario, Canada.

American Journal of Obstetrics and Gynecology
|March 29, 2013
PubMed
Summary

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Flow Sheet01:17

Flow Sheet

Flowsheets are valuable tools in nursing documentation. They enable healthcare professionals to efficiently record and monitor various patient assessments and measurements in a consolidated format.
Here's a closer look at the examples of flowsheets commonly used by nurses:
Graphic Sheet Documentation:

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The Obstetric Triage Acuity Scale (OTAS) reliably categorizes patient urgency, improving obstetric triage efficiency. This scale helps standardize care and analyze patient flow in obstetrics.

Area of Science:

  • Obstetrics and Gynecology
  • Healthcare Management
  • Nursing Practice

Background:

  • Standardized triage tools are crucial for efficient obstetric care.
  • Existing triage systems may lack specificity for obstetric patients.
  • The Obstetric Triage Acuity Scale (OTAS) was developed to address these needs.

Purpose of the Study:

  • To evaluate the interrater reliability of the 5-category Obstetric Triage Acuity Scale (OTAS).
  • To determine the distribution of patient acuity and flow based on OTAS levels.
  • To assess the impact of OTAS on patient care and workflow.

Main Methods:

  • Interrater reliability was tested using 110 triage charts and 8 triage nurses.
  • Patient flow metrics, including time to assessment and length of stay, were abstracted from a patient management system.
Keywords:
acuityobstetric triagepatient flow

Related Experiment Videos

Last Updated: May 12, 2026

Observational Study Protocol for Repeated Clinical Examination and Critical Care Ultrasonography Within the Simple Intensive Care Studies
10:38

Observational Study Protocol for Repeated Clinical Examination and Critical Care Ultrasonography Within the Simple Intensive Care Studies

Published on: January 16, 2019

  • Acuity levels were stratified by OTAS categories (1-5).

    • Main Results:

    • OTAS demonstrated substantial to near-perfect interrater reliability (Kappa 0.61-0.77 for OTAS 1-4, 0.87 for OTAS 5).
    • Two-thirds of patients presented with low acuity (OTAS 4-5).
    • Length of stay decreased with lower acuity, but time to secondary assessment remained constant across all levels.

    Conclusions:

    • OTAS is a reliable tool for assessing obstetric patient acuity.
    • Implementation of OTAS enables acuity-based triaging and improved patient flow analysis.
    • Standardized assessment via OTAS offers opportunities for performance improvement and inter-organizational comparisons in obstetric care.