ClinicalTrials.gg
CompletedNCT03505801Updated May 6, 2026

Confirm Rx Insertable Cardiac Monitor SMART Registry

An observational study in Cardiac Arrhythmias, Symptoms and Signs and Atrial Fibrillation, sponsored by Abbott Medical Devices. Completed at 113 sites in 24 countries. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-05-06.

Primary conditionAtrial FibrillationRegistry: Arrhythmias, CardiacReclassifiedWhy we changed it
Registry
Arrhythmias, Cardiac — the first condition term the registry derived for this study.
ClinicalTrials.gg
Atrial Fibrillation
Why
  1. The study's listed conditions name Atrial Fibrillation, a narrower term within Arrhythmias, Cardiac.
Confidence
High: the new condition is named in the study's own listed conditions. Of 351 hand-checked studies reclassified this way, 68% were exactly right and 84% in the right disease family; the registry's first term was right for 5% (measured 2026-10-21). How we classify →
Wrong?
Tell us the study's main condition →

Sponsored by Abbott Medical Devices (part of Abbott) · Observational

Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
1,826
Ages
18 Years and older
Sex
All
01

Study summary

The purpose of the Confirm Rx SMART Registry is to collect real world data to assess the safety and performance of the Confirm Rx Insertable Cardiac Monitor (ICM) and system over a 12 month period. A sub-set of subjects enrolled in the Confirm Rx SMART Registry will meet the Post Market Clinical Follow-Up (PMCF) requirement for CE mark.

02

Conditions studied

  • Cardiac Arrhythmias
  • Symptoms and Signs
  • Atrial Fibrillation

Browse trials for

03

In context

Atrial Fibrillation Reclassified

4,009 studies on the registry are indexed under Atrial Fibrillation; 961 are open to participants now.

This study's enrollment of 1,826 is above the median of 300 across 1,400 observational studies indexed under Atrial Fibrillation.

Browse Atrial Fibrillation studies →

Lead sponsor

Abbott Medical Devices is the lead sponsor of 539 studies on the registry; 33 are open to participants now.

Of its 53 completed or terminated interventional studies of FDA-regulated products, 44 (83%) have results posted.

Compared within Atrial Fibrillation, this study's primary condition as ClinicalTrials.gg classifies it; the registry's first condition term is Arrhythmias, Cardiac. The counts are of registry records indexed under each term, refreshed daily. How we classify →

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

Subjects over the age of 18 years (or of legal age specific to state and national law) who experience unexplained symptoms such as: dizziness, palpitations, chest pain, syncope, and shortness of breath, as well as subjects who are at risk for cardiac arrhythmias, have been previously diagnosed with atrial fibrillation, or who are susceptible to developing atrial fibrillation.

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Have an approved indication for continuous arrhythmia monitoring with an ICM
  • Have a cellular phone or the ability or willing to use a St. Jude Medical mobile transmitter that is compatible with the MyMerlin App and able to communicate with the Confirm Rx ICM device.
  • Have the ability to provide for study participation and be willing and able to comply with the prescribed follow-up tests and schedule of evaluations.
  • Are 18 years of age or older, or of legal age to give informed consent specific to state and national law.

Exclusion criteria

Exclusion Criteria:

  • Subject is implanted with or indicated for implant with a pacemaker, implantable cardioverter defibrillator (ICD), or cardiac resynchronization therapy (CRT) device.
  • Enrolled or intend to participate in a clinical drug and/or device study, which could confound the results of this trial as determined by the sponsor, during the course of this clinical study.
  • Have a of less than 1 year due to any condition.
  • Have a previous ICM placement.
Terms in these criteria, in plain language(2)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Life expectancy

The study doctor’s estimate of how long someone is likely to live. Criteria use it so that people can stay in the study long enough for it to answer its question.

05

Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
1,826 participants (actual)
Target follow-up
12 Months
Patient registry
Yes

Interventions

  • DeviceConfirm Rx ICM insertion procedure

    Insertion of Confirm Rx ICM device

06

What researchers measure

Primary outcomes

  1. Freedom from device SADEs and serious procedure related SAEs

    Time frame: 1 month post insertion procedure

Secondary outcomes

  1. Freedom from device SADEs and serious procedure related SAEs

    Time frame: 12 months post insertion procedure

  2. R wave amplitude

    Time frame: 12 months post insertion procedure

07

Study locations

113 sites
  • Arrhythmia Research Group
    Jonesboro, Arkansas 72401, United States
  • Bay Area Cardiology Associates PA
    Brandon, Florida 33511, United States
  • Bayfront Medical Center
    St. Petersburg, Florida 33701, United States
  • St. Luke's Regional Medical Center
    Boise, Idaho 83712, United States
  • Kootenai Heart Clinics
    Coeur d'Alene, Idaho 83814, United States
  • Iowa Heart Center
    West Des Moines, Iowa 50266, United States
  • Kansas City Cardiac Arrhythmia Research Foundation
    Overland Park, Kansas 66211, United States
  • MedStar Health Research Institute
    Hyattsville, Maryland 20782, United States
  • Adventist HealthCare White Oak Medical Center
    Silver Spring, Maryland 20904, United States
  • Cardiology Consultants of East Michigan
    Flint, Michigan 48532, United States
  • Pinnacle Health System
    Harrisburg, Pennsylvania 17105, United States
  • Cardiology Consultants of Philadelphia
    Yardley, Pennsylvania 19067, United States
  • Erlanger Medical Center
    Chattanooga, Tennessee 37403, United States
  • St. Thomas Hospital
    Nashville, Tennessee 37205, United States
  • Ascension Texas Cardiovascular
    Austin, Texas 78731, United States
  • Hôpital Central de l'Armée
    Algiers, Algeria
  • Instituto Argentino de Diagnostico y Tratamiento
    Buenos Aires, Argentina
  • Clinica Provincial
    Merlo, Argentina
  • Kepler Universitätsklinikum GmbH
    Linz, Austria
  • Krankenhaus der Stadt St. Pölten
    Sankt Pölten, Austria
  • Universitätsklinikum Tulln
    Tulln, Austria
  • Hopital Erasme
    Brussels, Belgium
  • Ziekenhuis Oost-Limburg
    Genk, Belgium
  • CHU Liège Sart Tilman
    Liège, Belgium
  • Foothills Medical Centre
    Calgary, Alberta, Canada
  • Institut de Cardiologie de Montreal (Montreal Heart Inst.)
    Montreal, Quebec, Canada
  • CHUM
    Montreal, Canada
  • Institut de Cardiologie de Quebec (Hospital Laval)
    Québec, Canada
  • HSC, Eastern Health
    St. John's, Canada
  • Klinikum Idar-Oberstein GmbH
    Idar-Oberstein, Hesse, Germany
  • Kerckhoff-Klinik gGmbH
    Bad Nauheim, Germany
  • Universitätsmedizin Berlin - Campus Benjamin Franklin (CBF)
    Berlin, Germany
  • Klinikum Coburg GmbH
    Coburg, Germany
  • Evangelisches Krankenhaus Kalk gGmbH
    Cologne, Germany
  • Krankenhaus Porz am Rhein
    Cologne, Germany
  • Medizinische Einrichtungen der Universität zu Köln
    Cologne, Germany
  • Herzzentrum Dresden GmbH Universitätsklinik
    Dresden, Germany
  • Klinikum Furth
    Fürth, Germany
  • Asklepios Klinik St. Georg
    Hamberg, 20099, Germany
  • Klinikum Herford
    Herford, Germany
  • Universitätsklinikum Leipzig AÖR
    Leipzig, Germany
  • St.-Marien-Hospital GmbH
    Lünen, 44534, Germany
  • München Grosshadern
    München, Germany
  • Harzklinikum Dorothea Christiane Erxleben GmbH
    Quedlinburg, Germany
  • Kliniken Villingen-Schwenningen
    Villingen-Schwenningen, Germany
  • Semmelweis University
    Budapest, Budapst, Hungary
  • Advance Medicare Research Institute (AMRI) Hospital
    Dhakuria, India
  • Max Super Specialty Hospital
    New Delhi, India
  • Bnai Zion Medical Israel
    Haifa, Israel
  • Azienda Ospedaliero Universitaria - Ospedali Riuniti Foggia
    Foggia, Apulia, Italy
  • Arcispedale Santa Maria Nuova
    Reggio Emilia, Emilia-Romagna, Italy
  • C.D.C. Citta di Aprilia
    Aprilia, Italy
  • Az.Osp.Universitaria Consorziale Policlinico
    Bari, Italy
  • Presidio Ospedaliero Giovan Battista Grassi
    Ostia Antica, Italy
  • Casa di Cura Dpott. Pederzoli
    Peschiera del Garda, Italy
  • Ospedale S. Andrea
    Roma, Italy
  • Ospedale S. Giovanni Calibita Fatebenefratelli di Roma
    Roma, Italy
  • Policlinico Casilino
    Roma, Italy
  • Yokohamashintoshi Neurosurgical Hospital
    Yokohama, Kanagwa, Japan
  • Seirei Hamamatsu General Hospital
    Hamamatsu, Shizuok 430-8558, Japan
  • Saiseikai Fukuoka General Hospital
    Fukuoka, Japan
  • Akashi Medical Center
    Hyōgo, Japan
  • St. Marianna University School of Medicine - Toyoko Hospital
    Kawasaki, Japan
  • Kokura Memorial Hospital
    Kitakyushu, Japan
  • University Hospital of Occupational & Environmental Health
    Kitakyushu, Japan
  • Iwate Prefectural Central Hospital
    Morioka, Japan
  • Osaka University Hospital
    Suita, Japan
  • Sabah Al-Ahmad Cardiac Centre
    Kuwait City, Kuwait
  • Pauls Stradins Clinical University Hospital
    Riga, Latvia
  • Albert Schweitzer Ziekenhuis
    Dordrecht, Netherlands
  • Martini Ziekenhuis
    Groningen, Netherlands
  • Erasmus MC - Thoraxcenter
    Rotterdam, Netherlands
  • Haga Ziekenhuis Locatie Leyenburg
    The Hague, Netherlands
  • Maxima Medisch Centrum
    Veldhoven, Netherlands
  • Hospital Prof. Doutor Fernando Fonseca
    Amadora, Portugal
  • Hospital de Santa Cruz
    Carnaxide, Portugal
  • Centro Hospitalar do Alto Ave, Unidade de Guimarães
    Creixomil, Portugal
  • Hospital de Santo Andre - Centro Hospitalar de Leiria
    Leiria, Portugal
  • Santa Maria Hospital
    Lisbon, Portugal
  • Caribbean Heart Institute
    Caguas, 00727, Puerto Rico
  • King Fahad Armed Forces Hospital
    Jeddah, Saudi Arabia
  • King Abdullah Medical City in Holy Capital
    Mecca, Saudi Arabia
  • King Fahad Medical City
    Riyadh, Saudi Arabia
  • Changi General Hospital
    Singapore, 529889, Singapore
  • Stredoslovenský ústav srdcových a cievnych chorôb, a.s.
    Banská Bystrica, Stredne, Slovakia
  • The National Institute of Cardiovascular Diseases
    Bratislava, Slovakia
  • Sunninghill Hospital
    Johannesburg, Sandton 2196, South Africa
  • MedClinic Panorama
    Cape Town, W Cape 7500, South Africa
  • Groote Schuur Hospital
    Cape Town, W Cape 7935, South Africa
  • Unitas Hospital
    Centurion, South Africa
  • Busamed Hillcrest Private Hospital
    Hillcrest, South Africa
  • Busamed Gateway Private Hospital
    Umhlanga, South Africa
  • Hallym University Sacred Heart Hospital
    Anyang, Gyeongi 14068, South Korea
  • Inha University Hospital
    Junggu, Gyeongi, South Korea
  • Dong-A University Hospital
    Busan, South Gyeongsang Province, South Korea
  • Seoul National University Bundang Hospital
    Seongnam, Sudogwn, South Korea
  • Chung Ang University Hospital
    Seoul, Sudogwn, South Korea
  • Kosin University Gospel Hospital
    Busan, Yeongnm, South Korea
  • Ulsan University Hospital
    Ulsan, Yeongnm, South Korea
  • Keimyung University Dongsan Medical Center
    Daegu, South Korea

Showing the first 100 of 113 sites across 24 countries. Choose a country and city above to see the rest.

08

References and documents

Publications

  • Quartieri F, Baek YS, Park JS, Kim TH, Honma K, Morimoto M, Kang KW, Feng L, Lee K, Grammatico A, Kaiser L. Continuing evaluation of atrial fibrillation detection after cryptogenic stroke: 2-year findings from a multicentre study with Confirm Rx ICM. Open Heart. 2025 Jun 12;12(1):e003242. doi: 10.1136/openhrt-2025-003242. PubMed 40514061 ↗
09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Ran from Apr 2018 to primary completion in Sep 2019, 16 months.

Of 148 industry-sponsored observational studies under Atrial Fibrillation, half reached primary completion within 26 months of starting (the median), counting those still running; a quarter within 14 and three quarters within 42. This study's 16 months is below that.

Counting every sponsor, half of 698 studies reached it within 38 months; a quarter within 22 and three quarters within 76.

How these figures are worked out, and which studies are left out of them.

Registered
Apr 13, 2018
First posted
Apr 23, 2018
StartActual
Apr 24, 2018
Primary completionActual
Sep 19, 2019
CompletionActual
Jan 6, 2026
Last update
May 6, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on May 6, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03505801
Responsible party
Sponsor
First posted
Apr 23, 2018
Start date
Apr 24, 2018
Primary completion
Sep 19, 2019
Completion
Jan 6, 2026
Last update
May 6, 2026

Study contacts

Fabio Quartieri, MD
principal investigator · Arcispedale S. Maria Nuova - IRCCS l

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Apr 2026. You cannot join it, but the record below documents what was studied.

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