Definitions of intradialytic hypotension

Area of Science:

• Nephrology
• Clinical Medicine
• Dialysis Technology

Background:

• Intradialytic hypotension (IDH) is a frequent complication during hemodialysis.
• Existing definitions of IDH lack consensus and vary across clinical and research settings.

Purpose of the Study:

• To highlight the critical need for a standardized, evidence-based definition of intradialytic hypotension.
• To underscore how definition inconsistencies impede research synthesis, guideline development, and accurate patient risk assessment.

Main Methods:

• Review of existing definitions of intradialytic hypotension.
• Analysis of common components in current IDH definitions, including blood pressure criteria, interventions, and patient symptoms.

Main Results:

• No universally accepted, evidence-based definition for IDH currently exists.
• Inconsistent definitions hinder the estimation of IDH prevalence and patient risk stratification.
• Current definitions often incorporate blood pressure thresholds, interventions, or patient-reported symptoms.

Conclusions:

• The lack of a standardized IDH definition poses a significant barrier to advancing clinical practice and research.
• Further research is required to develop and validate a universal definition that encompasses diverse patient populations and settings.
• A consensus definition is essential for improving the prevention and treatment of intradialytic hypotension.