Pericardial effusion size measurement guide and calculator
Explore the pericardial effusion size tool, its measurement acquisition teaching and its source context.
Method
Maximum echo-free separation at end-diastole (mm)
Use the measurement units shown below. Some fields apply only to a selected method or condition; follow the interactive tool’s method choices. The interactive tool keeps missing measurements incomplete and provides its method-specific results and reference context.
Measurements and acquisition
Maximum end-diastolic separation mm
Enter the measured value in the displayed unit
- Confirm the variable matches the selected formula.
- Use the unit displayed beside the field.
- Keep measurements from the same representative hemodynamic state.
Sources and method context
European Society of Cardiology · 2025 · 2025 ESC Guidelines for the Management of Myocarditis and Pericarditis · Section 5.5 and Table 10 · Classification of pericardial effusion
- Method and interpretation · Section 5.5 and Table 10 · Classification of pericardial effusion
Largest end-diastolic echo-free separation: small <10 mm, moderate 10–20 mm, large >20 mm; evaluate distribution and hemodynamic findings separately.
Catalogue review status: Exact guideline locator mapped · clinical sign-off pending
These pages describe the educational tool. Interpret measurements with the complete clinical context and the method’s acquisition limitations.
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