Related Experiment Video
Updated: Apr 16, 2026

An In Vitro Model of a Parallel-Plate Perfusion System to Study Bacterial Adherence to Graft Tissues
Published on: January 7, 2019
An observational study on infective endocarditis: a single center experience
Seyed Mohammad Javad Hosseini1, Ramezan Bakhshian2, Maryam Moshkani Farahani2
1Molecular Biology Research Center, Baqiyatallah University of Medical Sciences, Tehran, IR Iran.
Background:
Cloning of microorganisms on heart endothelium can lead to infective endocarditis (IE). The prototypic lesion of infective endocarditis, the vegetation is a mass of platelets, fibrin, microcolonies of microorganisms, and scant inflammatory cells.
Objectives:
The aim of this study was to evaluate patients with IE and also focusing on echocardiographic data and comparison between TTE (transthoracic echocardiography) and TEE (transesophageal echocardiography) of native and prosthetic valve endocarditis and the final impact of IE (infective endocarditis) in these patients with endocarditis.
Patients And Methods:
All patients with IE admitted to our center between 2007 and 2010 were studied. All echocardiographies were performed by the same echocardiographer. Echocardiography and lab tests were performed for all patients. We used SPSS 16 for data analysis.
Results:
We studied 35 patients, 45% male and 55% female with a mean age of 56.36 ± 12.44 years. Fever (80%) and chills (65.7%) were the most common symptoms. There was only a positive blood culture and enterococci sensitive to vancomycin and amoxicillin. The most involved valve was mitral (54.2%) and then aortic valve (48.5%) (two patients had vegetation on both aortic and mitral valves). In this study, specificity and sensitivity of TEE were 100% and 88.6%. Six patients (17.1%) died and six patients needed surgery.
Conclusions:
Endocarditis is an important disease with a high mortality rate if not treated appropriately. Therefore, these patients need more attention. In echocardiography, vegetation and complications of IE such as abscess and paravalvular leakage can be detected.
Insights
Infective endocarditis (IE) is a serious condition requiring prompt attention. Echocardiography, particularly TEE, is crucial for detecting vegetations and complications, aiding in timely treatment and improving patient outcomes.
Area of Science:
- Cardiology
- Infectious Diseases
- Medical Imaging
Background:
- Infective endocarditis (IE) originates from microbial colonization of heart endothelium.
- The characteristic lesion, vegetation, comprises platelets, fibrin, microorganisms, and inflammatory cells.
Purpose of the Study:
- To evaluate patients with infective endocarditis (IE).
- To analyze echocardiographic data, comparing transthoracic echocardiography (TTE) and transesophageal echocardiography (TEE).
- To assess the impact of IE on native and prosthetic valves.
Main Methods:
- Retrospective study of 35 IE patients (2007-2010).
- Standardized echocardiography and laboratory tests performed for all patients.
- Statistical analysis using SPSS 16.
Main Results:
- Fever (80%) and chills (65.7%) were predominant symptoms.
- Mitral valve (54.2%) and aortic valve (48.5%) were most frequently affected.
- Transesophageal echocardiography (TEE) demonstrated 100% specificity and 88.6% sensitivity; 17.1% mortality and 17.1% surgical intervention rate.
Conclusions:
- Infective endocarditis (IE) carries a high mortality rate if untreated.
- Echocardiography is vital for identifying vegetations and complications like abscesses and paravalvular leaks.
- Prompt diagnosis and management are essential for improving patient outcomes.
Related Concept Videos
Endocarditis II: Clinical Features of Infective Endocarditis
Endocarditis I: Introduction
Endocarditis IV: Nursing Management
Endocarditis III: Medical Management
Rheumatic Heart Disease II: Clinical Manifestations and Diagnostic Studies
Myocarditis II: Clinical Features and Diagnostic Tests

