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The FIGO Ovulatory Disorders Classification System.

Malcolm G Munro1, Adam H Balen2, SiHyun Cho3

  • 1The University of California, Los Angeles, Los Angeles, California, USA.

Fertility and Sterility
|August 22, 2022
PubMed
Summary
This summary is machine-generated.

A new classification system for ovulatory disorders, including polycystic ovary syndrome (PCOS), has been developed by the International Federation of Gynecology and Obstetrics (FIGO). This comprehensive system aims to improve research, education, and clinical care for ovulatory dysfunction.

Keywords:
anovulationovulatory disordersovulatory disorders classificationovulatory dysfunction

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Area of Science:

  • Reproductive Endocrinology and Infertility
  • Gynecological Disorders Classification
  • Medical Diagnostics and Research

Background:

  • Ovulatory disorders are common causes of infertility and abnormal uterine bleeding, frequently linked to Polycystic Ovary Syndrome (PCOS).
  • Existing classification systems, like the WHO's, are outdated and do not incorporate recent research or technological advancements.
  • The lack of a consensus classification hinders collaborative research, education, and clinical management of ovulatory dysfunction.

Purpose of the Study:

  • To develop and introduce a new, comprehensive, multi-tiered classification system for ovulatory disorders.
  • To address the limitations of existing systems and facilitate advancements in research, education, and clinical practice.
  • To provide a standardized framework for understanding and managing the diverse causes of ovulatory dysfunction.

Main Methods:

  • Development of the new classification system under the International Federation of Gynecology and Obstetrics (FIGO).
  • Utilized a rigorous Delphi process involving international experts, specialty societies, and lay representatives.
  • The system features a three-level, multi-tiered structure based on an anatomic model (Hypothalamus, Pituitary, Ovary) plus PCOS, with mnemonics for stratification.

Main Results:

  • A novel three-level classification system for ovulatory disorders has been established.
  • The primary level uses the HyPO-P (Hypothalamus, Pituitary, Ovary, PCOS) anatomic model.
  • Second and third levels provide detailed stratification using 'GAIN-FIT-PIE' and specific diagnostic entities, respectively.

Conclusions:

  • The new FIGO classification system offers a standardized approach to ovulatory disorders.
  • Widespread adoption is anticipated to enhance education, clinical care, and research interpretation.
  • The system includes a mechanism for periodic reevaluation and revision to reflect evolving knowledge.