Related Experiment Video
Updated: Nov 28, 2025

An Intact Pericardium Ischemic Rodent Model
Published on: September 2, 2021
The constrictive consequences of pericardial calcifications
Anastasia D Egorova1, Martin J Schalij1, Philippine Kiès1
1Department of Cardiology Heart Lung Center Leiden University Medical Center Leiden The Netherlands.
Abstract:
A 53-year-old man presented with symptomatic severe pulmonary valve regurgitation. He underwent a diagnostic catheterization. A heavily calcified pericardium and the pressure tracings illustrate typical features of constrictive pericarditis physiology, including the "square root sign." This condition is important to recognize given the progressive nature and poor prognosis if untreated.
Related Concept Videos
Pericarditis III: Medical Management
Pericarditis II: Clinical Features and Diagnostic Tests
Pericarditis I: Introduction
Cardiomyopathy IV: Restrictive Cardiomyopathy
Imbalances in Cardiac Output
CHF can occur due to the failure of either side of the heart. Left-side failure leads to pulmonary congestion—the right side continues to send...
Mitral Stenosis I: Introduction

