Contribution of 18F-FDG PET-CT in the Diagnosis and the Detection of Peripheral Emboli of Infectious Endocarditis on Native Valves (NATIVTEP)

May 29, 2026 updated by: University Hospital, Bordeaux
The diagnosis of infectious endocarditis is not always easy and is based on several clinical and imaging arguments. Positron Emission Tomography - Computed Tomography (PET-CT) has been validated for endocarditis on prosthetic valves but few studies concern the native valves. The purpose of the study is to estimate the diagnostic sensitivity of [18F]-fluoro-2-deoxyglucose (18F-FDG) PET-CT in patients with endocarditis on native valves according to the European Society of Cardiology 2015 (ESC 2015) modified diagnostic criteria of infective endocarditis classified as definite at three months of follow-up (baseline test).

Study Overview

Status

Completed

Conditions

Detailed Description

Infectious endocarditis remains a serious pathology with an intra-hospital mortality of between 15 and 30%. The prognosis of patients depends on the speed of diagnosis and the beginning of the appropriate treatment.

Currently, the diagnosis of endocarditis is based on the ESC 2015 modified criteria. Echocardiography techniques play a key role, but can be negative in 20% of endocarditis. 18F-FDG PET-CT showed promising results in the management of prosthetic valve endocarditis and / or stimulation material.

However, few studies have been carried out on the contribution of PET-CT in the diagnosis of endocarditis on native valves, with discordant results. But this is the majority of endocarditis (70% of cases).

A 18F-FDG PET-CT will be performed in all patients included in the study in addition to standard care for endocarditis, within 5 days of the beginning of their management in the university hospital center of Bordeaux after verification of inclusion and exclusion criteria and signature of consent.

The included patients will be reviewed at Month 3 during a consultation with the completion of a clinical examination, an electrocardiogram, a biological assessment and a transthoracic ultrasound.

Adverse events and serious adverse events will be collected throughout the study.

Study Type

Interventional

Enrollment (Actual)

31

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

      • Pessac, France, 33604
        • University Hospital, Bordeaux

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Any patient ≥ 18 years treated at the university hospital center of Bordeaux for suspicion of infectious endocarditis on a native valve with a "definite" or "possible" diagnosis according to the ESC 2015 modified diagnostic criteria, agreeing to participate,
  • Affiliated person or beneficiary of a social security scheme,
  • Free, informed and written consent (no later than the day of inclusion and before any exam required by the research).

Exclusion Criteria:

  • Patient with a vital failure (haemodynamic, respiratory or neurological instability), requiring treatment in the intensive care unit and / or urgent surgery incompatible with performing PET-CT,
  • Pregnant or nursing woman,
  • Patient who has already been treated for infective endocarditis within six months of enrollment,
  • Patient who had cardiac surgery in the two months preceding inclusion,
  • Patient who has previously been hypersensitive to fluorodeoxyglucose and / or excipients of the radiotracer,
  • Patient unable to sign consent,
  • Patient under legal protection,
  • Women of childbearing age who do not benefit from effective contraception (HAS criteria),
  • Patient in a period of relative exclusion from another research protocol.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Diagnostic
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Whole-body 18F-FDG PET-CT scan
A 18F-FDG PET-CT will be performed within 5 days of the beginning of the patients care with infectious endocarditis at the University Hospital center of Bordeaux.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Sensitivity of the 18F-FDG PET-CT in the diagnosis of infectious endocarditis
Time Frame: 3 month
The reference test in this study will be a "definite diagnosis" of infectious endocarditis according to the ESC 2015 modified criteria at three months of follow-up, evaluated by a multidisciplinary committee in infectious endocarditis. This evaluation will be done blind to the results of the PET-CT of the study. The index test 18F-FDG PET-CT will have been performed at the initial phase of patient management.
3 month

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Investigators

  • Principal Investigator: Cécile ALEXANDRINO, MD, University Hospital, Bordeaux
  • Study Chair: Paul PEREZ, MD,PhD, University Hospital, Bordeaux

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

November 10, 2018

Primary Completion (Actual)

September 16, 2020

Study Completion (Actual)

September 16, 2020

Study Registration Dates

First Submitted

October 2, 2018

First Submitted That Met QC Criteria

October 2, 2018

First Posted (Actual)

October 4, 2018

Study Record Updates

Last Update Posted (Actual)

June 1, 2026

Last Update Submitted That Met QC Criteria

May 29, 2026

Last Verified

October 1, 2020

More Information

Terms related to this study

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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