Atrial FibrillationPhase 1/2ICE-CHIPNCT00281073
Intra-Cardiac Echocardiography Guided Cardioversion(ICE-CHIP) Study
A Phase 1/2 study testing Intra-Cardiac Echocardiography guided Cardioversion, Intracardiac Echo and ICE in people with Atrial Fibrillation, run by EP MedSystems at 6 sites in 2 countries.
Trial summary
This is a sequential phase 1 and phase 2 study to evaluate the efficacy of intracardiac echocardiography to detect septal and left atrial pathology as compared to transesophageal echocardiography (Phase 1) and its value in a management strategy for immediate cardioversion during cardiac catheterization procedures in… Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Atrial Fibrillation
- What is being tested?
- Intra-Cardiac Echocardiography guided Cardioversion, Intracardiac Echo and ICE
- Type of treatment
- Medical device
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 95 participants
- Where
- 6 sitesin 2 countries
- Study dates
- Mar 2005to Jul 2008
- Phase
- Phase 1/2
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Patients with spontaneous AF
- Patients with or without structural Heart Disease.
- Men or Women aged 18 years or older.
- Patients undergoing an invasive catheterization procedure including right heart catheterization.
- Patients who give an informed consent for participation in the study.
- Patients who have undergone a trans-thoracic echocardiogram within the last 14 days showing absence of intracardiac thrombi.
Show all 13Show fewer
- Patients who have undergone a trans-esophageal echocardiogram within the last 48 hours.
- Patients with spontaneous AF
- Patients with or without structural Heart Disease.
- Men or Women aged 18 years or older.
- Patients undergoing an invasive catheterization procedure including right heart catheterization.
- Patients who give an informed consent for participation in the study.
- Patients who have undergone a trans-thoracic echocardiogram within the last 14 days showing absence of intracardiac thrombi.
Who cannot join
- Patients in whom placement of an ICE catheter for adequate atrial visualization is technically not feasible.
- Women of child bearing potential, in whom pregnancy cannot be excluded.
- Patients with any medical condition or social circumstance, which in the opinion of the investigator, would make the patient's successful completion of the study doubtful
- Exclusion Criteria for the Phase II Component 1. Patients anticoagulated for > 7 days. 2. Patients who have had a cardioembolic event within the last 1-month. 3. Patients requiring urgent cardioversion due to hemodynamic instability. 4. Patients in whom placement of an ICE catheter for adequate atrial visualization is technically not feasible. 5. Patients with contraindications for Warfarin. 6. Women of child bearing potential, in whom pregnancy cannot be excluded. 7. Patients who need anticoagulation withdrawn due to an elective procedure 8. Patients with any medical condition or social circumstance, which in the opinion of the investigator would make the patient's successful completion of the study doubtful.
- -
Trial locations and contacts
6 sites in 2 countries.
6 sites in 2 countries
United States5 sites
University of Chicago - Center for Advanced Medicine
Chicago, Illinois, 60637
Cleveland Clinic Foundation
Cleveland, Ohio, 44195
Mayo Clinic
Jacksonville, Florida, 32224
Aurora Sinai Medical Center / St. Lukes Medical Center
Milwaukee, Wisconsin, 53215
Carle Clinic
Urbana, Illinois, 61801
Netherlands1 site
Erasmus University Medical Center
Rotterdam, Rotterdam, 2040-3000CA
About this study
Official title: A Sequential Phase I - Phase II Pilot Study to Compare Cardiac Imaging Capabilities of ICE With TEE Followed by a Randomized Comparison of ICE Guided Cardioversion With Conventional Cardioversion Strategy in Patients With Atrial Fibrillation
This is a sequential phase 1 and phase 2 study to evaluate the efficacy of intracardiac echocardiography to detect septal and left atrial pathology as compared to transesophageal echocardiography (Phase 1) and its value in a management strategy for immediate cardioversion during cardiac catheterization procedures in patients with atrial fibrillation as compared to a conventional strategy delaying cardioversion till full anticoagulation is established for a three weeks (Phase 2). Phase 1 will enroll 100 patients at 12 centers; these patients will be undergoing clinically indicated TEE \& cardiac catheterization procedures. After review of Phase 1 results by an independent DSMB \& the investigators that establish efficacy of ICE, Phase 2 will be initiated. Phase 2 will enroll 300 patients in 15 centers; these patients with atrial fibrillation will be undergoing clinically indicated cardiac catheterization procedures and have a clinical indication for cardioversion. Patients will be randomized to ICE guided cardioversion strategy or a conventional strategy employing three weeks of full anticoagulation before cardioversion. ICE imaging will be used to identify a low risk group for immediate cardioversion. A composite primary study endpoint that will include mortality and major morbidity including stroke and bleeding complications will be used.
This study will examines two hypotheses in AF patients undergoing invasive cardiac procedures:
Read more
Hypothesis 1: That ICE has comparable efficacy to TEE in visualization of left atrial pathology or septal defects that can predispose patients to stroke. This will be evaluated during the Phase I component of the study.
Hypothesis 2: That ICE can identify low risk patients in whom immediate cardioversion during the procedure is safe and comparably effective to electrical cardioversion performed based on a conventional strategy of a minimum of 3 weeks of preceding anticoagulation therapy. Low risk patients are expected to have an acceptably low incidence rate of stroke, transient ischemic attack (TIA), peripheral embolism, and major hemorrhagic events following electrical cardioversion. This will be evaluated during the Phase II component of the study, after the Phase I objective is achieved.
Read the detailed description
The presence of intra-atrial thrombi or their precursors with their propensity for systemic embolism or the presence of interatrial septal defects are major concerns for patients with atrial fibrillation (AF) undergoing cardioversion. Transesophageal echocardiography (TEE) has been demonstrated to be a sensitive tool to detect septal defects, left atrial thrombi and spontaneous echo contrast (1, 2,3). The ACUTE trial documented that TEE based exclusion of intra cardiac thrombi, smoke or spontaneous echo contrast can facilitate safe immediate cardioversion in patients with AF. (4) This trial demonstrated comparable risk of embolic events with a TEE- based strategy to identify low risk patients for immediate cardioversion when compared to a conventional strategy of 3 weeks of anticoagulation before cardioversion.
The recognition of systemic thromboembolism as a significant potential complication of cardioversion during interventional cardiology procedures in patients with AF has stimulated interest in the clinical evaluation of catheter based intra cardiac echocardiography (ICE). Initial experience with intra cardiac phased -array imaging has demonstrated the efficacy and feasibility of this technology for intracardiac application and its capability in high resolution imaging of endocardial structures. (5) In the recent times, the utility of this imaging modality in various interventional procedures has been investigated and its effectiveness in visualizing left atrial thrombi during ablative procedures has been demonstrated in observational studies. (6 -11) However, a prospective multicenter comparative study of these two imaging techniques is unavailable. Should ICE provide comparable imaging capabilities to TEE, the value of ICE guided cardioversion during invasive procedures can also then be systematically studied during a prospective multicenter clinical study.
The ICE CHIP study is a prospective open label randomized multi-center investigation performed in two phases designed to initially compare two distinct imaging modalities (Phase 1) and subsequently two different strategies (ICE guided Cardioversion and Conventional) in the management of AF in patients undergoing invasive cardiac procedures in whom electrical cardioversion is indicated (Phase 2).
In Phase I, each patient will be imaged by TEE \& ICE and a core echo laboratory will perform a blinded comparison of the two imaging modalities.
In Phase II, patients will be randomized to one of the two treatment groups. Investigators will be blinded to the method of management for each patient prior to their enrollment into the study. The composite incidence rate of major cardiac and bleeding complications (stroke, TIA, peripheral embolism, major hemorrhagic event) will be compared between the two treatment groups over the duration of the study.
In Phase 1, 100 patients will be enrolled at up to 12 investigational centers in USA \& Europe. Study patients will have clinically indicated a TEE procedure as well as an invasive cardiac procedure. Recordings from both imaging methods will be analyzed in an independent and blinded manner at the core laboratory. It is estimated that enrollment will take 3 months.
In Phase 2, a total of 300 patients (3:2 randomization) will be enrolled in the study at up to 15 investigational sites in USA and Europe. Patients with AF who require electrical cardioversion will be enrolled into the study. The study will last for 8 weeks for each subject, with an estimated overall duration of 12 months (8 months enrollment period, 2 months follow-up period, remaining time for close-out) for the study.
The pilot study design was selected in order to evaluate the comparative accuracy of ICE imaging and TEE as well as the feasibility of ICE guided management of AF. In Phase 1, the design will ensure that ICE imaging is not inferior to standard TEE for detection of left atrial pathology. In Phase 2, ICE imaging will be performed in patients prior to immediate electrical cardioversion to determine if it is equivalent to the conventional management strategy of electrical cardioversion after anticoagulation for 3 weeks prior to cardioversion.
Both the Phase I and Phase II studies will be open label. An open label study design is proposed because it is not possible to blind the clinicians, patients or the sponsor to the identity of the diagnostic technique in Phase I (ICE vs. TEE) and to management strategy in Phase II (ICE vs. Conventional Strategy). The ICE and TEE data analysis in the Phase I component by the core lab will be blinded in so far as the identity of the patient, investigator and center. In the Phase II study, patient randomization to the treatment groups will minimize the chance of patient selection bias. An 8-week study duration was chosen for the Phase II component because most major cardiac and bleeding complications occur within this period.
- Conditions
- Atrial Fibrillation
- Being tested
- Intra-Cardiac Echocardiography guided Cardioversion, Intracardiac Echo, ICE
- Keywords
- Intra-Cardiac Echocardiography, Cardioversion
- Medical subject headings
- Atrial Fibrillation
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Intra-Cardiac Echocardiography guided CardioversionDevice
Intracardiac Echo and TEE
Intracardiac EchoDevice
Intracardiac Echo Viewmate
ICEDevice
ICE or TEE
| Study group | Role | What they receive |
|---|---|---|
| TEE and ICE | Active comparator | Serial use of TEE and ICE for comparative analysis Receives: Device: Intra-Cardiac Echocardiography guided Cardioversion; Device: Intracardiac Echo; Device: ICE |
| ICE or TEE | Active comparator | Not described Receives: Device: ICE |
What is being measured
The primary outcome is the main question the study is designed to answer.
Prevalence of thrombi or spontaneous contrast detected by ICE or TEE
Prevalence of thrombi or spontaneous contrast detected by ICE
Measured: intraoperative
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted24 Jan 2006 (estimated)
- Study startMar 2005
- Primary completionMay 2008
- Study completionJul 2008
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (23)Papers the sponsor has linked to this study.
- Other trials for Atrial FibrillationStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 1/2
- Primary purpose
- Treatment
- Allocation
- Non-randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Enrolment
- 95 participants (actual)
Sponsor and investigators
- Lead sponsor
- EP MedSystems
- Sponsor type
- Industry (pharma, biotech, devices)
- Investigators
- Sanjeev Saksena, MD, FACC, Study chair, Professor, UMDNJ-RWJ Medical School
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00281073
- Sponsor's protocol ID
- 2004-01
- Acronym
- ICE-CHIP
- Status last verified
- May 2011
- First submitted
- 23 Jan 2006
- Last updated
- 11 May 2011
- Results posted
- No
- Data monitoring committee
- Yes
Publications
Pearson AC, Labovitz AJ, Tatineni S, Gomez CR. Superiority of transesophageal echocardiography in detecting cardiac source of embolism in patients with cerebral ischemia of uncertain etiology. J Am Coll Cardiol. 1991 Jan;17(1):66-72. doi: 10.1016/0735-1097(91)90705-e.
PubMed 1987242Lin SL, Hsu TL, Liou JY, Chen CH, Chang MS, Chiang HT, Chen CY. Usefulness of transesophageal echocardiography for the detection of left atrial thrombi in patients with rheumatic heart disease. Echocardiography. 1992 Mar;9(2):161-8. doi: 10.1111/j.1540-8175.1992.tb00454.x.
PubMed 10149880Castello R, Pearson AC, Labovitz AJ. Prevalence and clinical implications of atrial spontaneous contrast in patients undergoing transesophageal echocardiography. Am J Cardiol. 1990 May 1;65(16):1149-53. doi: 10.1016/0002-9149(90)90330-4.
PubMed 2330903Klein AL, Grimm RA, Murray RD, Apperson-Hansen C, Asinger RW, Black IW, Davidoff R, Erbel R, Halperin JL, Orsinelli DA, Porter TR, Stoddard MF; Assessment of Cardioversion Using Transesophageal Echocardiography Investigators. Use of transesophageal echocardiography to guide cardioversion in patients with atrial fibrillation. N Engl J Med. 2001 May 10;344(19):1411-20. doi: 10.1056/NEJM200105103441901.
PubMed 11346805Packer DL, Stevens CL, Curley MG, Bruce CJ, Miller FA, Khandheria BK, Oh JK, Sinak LJ, Seward JB. Intracardiac phased-array imaging: methods and initial clinical experience with high resolution, under blood visualization: initial experience with intracardiac phased-array ultrasound. J Am Coll Cardiol. 2002 Feb 6;39(3):509-16. doi: 10.1016/s0735-1097(01)01764-8.
PubMed 11823090Olgin JE, Kalman JM, Fitzpatrick AP, Lesh MD. Role of right atrial endocardial structures as barriers to conduction during human type I atrial flutter. Activation and entrainment mapping guided by intracardiac echocardiography. Circulation. 1995 Oct 1;92(7):1839-48. doi: 10.1161/01.cir.92.7.1839.
PubMed 7671368Epstein LM, Smith T, TenHoff H. Nonfluoroscopic transseptal catheterization: safety and efficacy of intracardiac echocardiographic guidance. J Cardiovasc Electrophysiol. 1998 Jun;9(6):625-30. doi: 10.1111/j.1540-8167.1998.tb00945.x.
PubMed 9654229Marrouche NF, Martin DO, Wazni O, Gillinov AM, Klein A, Bhargava M, Saad E, Bash D, Yamada H, Jaber W, Schweikert R, Tchou P, Abdul-Karim A, Saliba W, Natale A. Phased-array intracardiac echocardiography monitoring during pulmonary vein isolation in patients with atrial fibrillation: impact on outcome and complications. Circulation. 2003 Jun 3;107(21):2710-6. doi: 10.1161/01.CIR.0000070541.83326.15. Epub 2003 May 19.
PubMed 12756153Mudra H, Klauss V, Blasini R, Kroetz M, Rieber J, Regar E, Theisen K. Ultrasound guidance of Palmaz-Schatz intracoronary stenting with a combined intravascular ultrasound balloon catheter. Circulation. 1994 Sep;90(3):1252-61. doi: 10.1161/01.cir.90.3.1252.
PubMed 8087934Hijazi Z, Wang Z, Cao Q, Koenig P, Waight D, Lang R. Transcatheter closure of atrial septal defects and patent foramen ovale under intracardiac echocardiographic guidance: feasibility and comparison with transesophageal echocardiography. Catheter Cardiovasc Interv. 2001 Feb;52(2):194-9. doi: 10.1002/1522-726x(200102)52:23.0.co;2-4.
PubMed 11170327Ren JF, Marchlinski FE, Callans DJ. Left atrial thrombus associated with ablation for atrial fibrillation: identification with intracardiac echocardiography. J Am Coll Cardiol. 2004 May 19;43(10):1861-7. doi: 10.1016/j.jacc.2004.01.031.
PubMed 15145112Shanewise JS, Cheung AT, Aronson S, Stewart WJ, Weiss RL, Mark JB, Savage RM, Sears-Rogan P, Mathew JP, Quinones MA, Cahalan MK, Savino JS. ASE/SCA guidelines for performing a comprehensive intraoperative multiplane transesophageal echocardiography examination: recommendations of the American Society of Echocardiography Council for Intraoperative Echocardiography and the Society of Cardiovascular Anesthesiologists Task Force for Certification in Perioperative Transesophageal Echocardiography. J Am Soc Echocardiogr. 1999 Oct;12(10):884-900. doi: 10.1016/s0894-7317(99)70199-9. No abstract available.
PubMed 10511663Petersen P, Boysen G, Godtfredsen J, Andersen ED, Andersen B. Placebo-controlled, randomised trial of warfarin and aspirin for prevention of thromboembolic complications in chronic atrial fibrillation. The Copenhagen AFASAK study. Lancet. 1989 Jan 28;1(8631):175-9. doi: 10.1016/s0140-6736(89)91200-2.
PubMed 2563096Boston Area Anticoagulation Trial for Atrial Fibrillation Investigators; Singer DE, Hughes RA, Gress DR, Sheehan MA, Oertel LB, Maraventano SW, Blewett DR, Rosner B, Kistler JP. The effect of low-dose warfarin on the risk of stroke in patients with nonrheumatic atrial fibrillation. N Engl J Med. 1990 Nov 29;323(22):1505-11. doi: 10.1056/NEJM199011293232201.
PubMed 2233931Stroke Prevention in Atrial Fibrillation Study. Final results. Circulation. 1991 Aug;84(2):527-39. doi: 10.1161/01.cir.84.2.527.
PubMed 1860198
Study at a glance
From the registry record, last updated by the sponsor on 11 May 2011. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- A Sequential Phase I - Phase II Pilot Study to Compare Cardiac Imaging Capabilities of ICE With TEE Followed by a Randomized Comparison of ICE Guided Cardioversion With Conventional Cardioversion Strategy in Patients With Atrial Fibrillation
- ClinicalTrials.gov ID
- NCT00281073
- Acronym / sponsor ID
- ICE-CHIP / 2004-01
- Conditions
- Atrial Fibrillation
- Keywords
- Intra-Cardiac Echocardiography, Cardioversion
- Phase
- Phase 1/2
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 95 participants (actual)
- Lead sponsor
- EP MedSystemsIndustry (pharma, biotech, devices)
- Study start
- Mar 2005
- Primary completion
- May 2008 (actual)
- Study completion
- Jul 2008 (actual)
- First posted
- 24 Jan 2006 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This is a sequential phase 1 and phase 2 study to evaluate the efficacy of intracardiac echocardiography to detect septal and left atrial pathology as compared to transesophageal echocardiography (Phase 1) and its value in a management strategy for immediate cardioversion during cardiac catheterization procedures in patients with atrial fibrillation as compared to a conventional strategy delaying cardioversion till full anticoagulation is established for a three weeks (Phase 2). Phase 1 will enroll 100 patients at 12 centers; these patients will be undergoing clinically indicated TEE \& cardiac catheterization procedures. After review of Phase 1 results by an independent DSMB \& the investigators that establish efficacy of ICE, Phase 2 will be initiated. Phase 2 will enroll 300 patients in 15 centers; these patients with atrial fibrillation will be undergoing clinically indicated cardiac catheterization procedures and have a clinical indication for cardioversion. Patients will be randomized to ICE guided cardioversion strategy or a conventional strategy employing three weeks of full anticoagulation before cardioversion. ICE imaging will be used to identify a low risk group for immediate cardioversion. A composite primary study endpoint that will include mortality and major morbidity including stroke and bleeding complications will be used.
This study will examines two hypotheses in AF patients undergoing invasive cardiac procedures:
Hypothesis 1: That ICE has comparable efficacy to TEE in visualization of left atrial pathology or septal defects that can predispose patients to stroke. This will be evaluated during the Phase I component of the study.
Hypothesis 2: That ICE can identify low risk patients in whom immediate cardioversion during the procedure is safe and comparably effective to electrical cardioversion performed based on a conventional strategy of a minimum of 3 weeks of preceding anticoagulation therapy. Low risk patients are expected to have an acceptably low incidence rate of stroke, transient ischemic attack (TIA), peripheral embolism, and major hemorrhagic events following electrical cardioversion. This will be evaluated during the Phase II component of the study, after the Phase I objective is achieved.
Detailed description
The presence of intra-atrial thrombi or their precursors with their propensity for systemic embolism or the presence of interatrial septal defects are major concerns for patients with atrial fibrillation (AF) undergoing cardioversion. Transesophageal echocardiography (TEE) has been demonstrated to be a sensitive tool to detect septal defects, left atrial thrombi and spontaneous echo contrast (1, 2,3). The ACUTE trial documented that TEE based exclusion of intra cardiac thrombi, smoke or spontaneous echo contrast can facilitate safe immediate cardioversion in patients with AF. (4) This trial demonstrated comparable risk of embolic events with a TEE- based strategy to identify low risk patients for immediate cardioversion when compared to a conventional strategy of 3 weeks of anticoagulation before cardioversion.
The recognition of systemic thromboembolism as a significant potential complication of cardioversion during interventional cardiology procedures in patients with AF has stimulated interest in the clinical evaluation of catheter based intra cardiac echocardiography (ICE). Initial experience with intra cardiac phased -array imaging has demonstrated the efficacy and feasibility of this technology for intracardiac application and its capability in high resolution imaging of endocardial structures. (5) In the recent times, the utility of this imaging modality in various interventional procedures has been investigated and its effectiveness in visualizing left atrial thrombi during ablative procedures has been demonstrated in observational studies. (6 -11) However, a prospective multicenter comparative study of these two imaging techniques is unavailable. Should ICE provide comparable imaging capabilities to TEE, the value of ICE guided cardioversion during invasive procedures can also then be systematically studied during a prospective multicenter clinical study.
The ICE CHIP study is a prospective open label randomized multi-center investigation performed in two phases designed to initially compare two distinct imaging modalities (Phase 1) and subsequently two different strategies (ICE guided Cardioversion and Conventional) in the management of AF in patients undergoing invasive cardiac procedures in whom electrical cardioversion is indicated (Phase 2).
In Phase I, each patient will be imaged by TEE \& ICE and a core echo laboratory will perform a blinded comparison of the two imaging modalities.
In Phase II, patients will be randomized to one of the two treatment groups. Investigators will be blinded to the method of management for each patient prior to their enrollment into the study. The composite incidence rate of major cardiac and bleeding complications (stroke, TIA, peripheral embolism, major hemorrhagic event) will be compared between the two treatment groups over the duration of the study.
In Phase 1, 100 patients will be enrolled at up to 12 investigational centers in USA \& Europe. Study patients will have clinically indicated a TEE procedure as well as an invasive cardiac procedure. Recordings from both imaging methods will be analyzed in an independent and blinded manner at the core laboratory. It is estimated that enrollment will take 3 months.
In Phase 2, a total of 300 patients (3:2 randomization) will be enrolled in the study at up to 15 investigational sites in USA and Europe. Patients with AF who require electrical cardioversion will be enrolled into the study. The study will last for 8 weeks for each subject, with an estimated overall duration of 12 months (8 months enrollment period, 2 months follow-up period, remaining time for close-out) for the study.
The pilot study design was selected in order to evaluate the comparative accuracy of ICE imaging and TEE as well as the feasibility of ICE guided management of AF. In Phase 1, the design will ensure that ICE imaging is not inferior to standard TEE for detection of left atrial pathology. In Phase 2, ICE imaging will be performed in patients prior to immediate electrical cardioversion to determine if it is equivalent to the conventional management strategy of electrical cardioversion after anticoagulation for 3 weeks prior to cardioversion.
Both the Phase I and Phase II studies will be open label. An open label study design is proposed because it is not possible to blind the clinicians, patients or the sponsor to the identity of the diagnostic technique in Phase I (ICE vs. TEE) and to management strategy in Phase II (ICE vs. Conventional Strategy). The ICE and TEE data analysis in the Phase I component by the core lab will be blinded in so far as the identity of the patient, investigator and center. In the Phase II study, patient randomization to the treatment groups will minimize the chance of patient selection bias. An 8-week study duration was chosen for the Phase II component because most major cardiac and bleeding complications occur within this period.
Study design
- Primary purpose
- Treatment
- Allocation
- Non-randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| TEE and ICE | Active comparator | Device: Intra-Cardiac Echocardiography guided Cardioversion, Device: Intracardiac Echo, Device: ICESerial use of TEE and ICE for comparative analysis |
| ICE or TEE | Active comparator | Device: ICE |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (13 listed)
- Patients with spontaneous AF
- Patients with or without structural Heart Disease.
- Men or Women aged 18 years or older.
- Patients undergoing an invasive catheterization procedure including right heart catheterization.
- Patients who give an informed consent for participation in the study.
Key exclusion criteria (5 listed)
- Patients in whom placement of an ICE catheter for adequate atrial visualization is technically not feasible.
- Women of child bearing potential, in whom pregnancy cannot be excluded.
- Patients with any medical condition or social circumstance, which in the opinion of the investigator, would make the patient's successful completion of the study doubtful
- Exclusion Criteria for the Phase II Component 1. Patients anticoagulated for > 7 days. 2. Patients who have had a cardioembolic event within the last 1-month. 3. Patients requiring urgent cardioversion due to hemodynamic instability. 4. Patients in whom placement of an ICE catheter for adequate atrial visualization is technically not feasible. 5. Patients with contraindications for Warfarin. 6. Women of child bearing potential, in whom pregnancy cannot be excluded. 7. Patients who need anticoagulation withdrawn due to an elective procedure 8. Patients with any medical condition or social circumstance, which in the opinion of the investigator would make the patient's successful completion of the study doubtful.
- -
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Intra-Cardiac Echocardiography guided CardioversionIntracardiac Echo and TEE | Device | TEE and ICE |
| Intracardiac EchoIntracardiac Echo Viewmate | Device | TEE and ICE |
| ICEICE or TEE | Device | ICE or TEE, TEE and ICE |
Primary outcome
Prevalence of thrombi or spontaneous contrast detected by ICE or TEE
Time frame: intraoperative
Prevalence of thrombi or spontaneous contrast detected by ICE
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 11 May 2011.
- Background: PubMed 1987242Pearson AC, Labovitz AJ, Tatineni S, Gomez CR. Superiority of transesophageal echocardiography in detecting cardiac source of embolism in patients with cerebral ischemia of uncertain etiology. J Am Coll Cardiol. 1991 Jan;17(1):66-72. doi: 10.1016/0735-1097(91)90705-e.
- Background: PubMed 10149880Lin SL, Hsu TL, Liou JY, Chen CH, Chang MS, Chiang HT, Chen CY. Usefulness of transesophageal echocardiography for the detection of left atrial thrombi in patients with rheumatic heart disease. Echocardiography. 1992 Mar;9(2):161-8. doi: 10.1111/j.1540-8175.1992.tb00454.x.
- Background: PubMed 2330903Castello R, Pearson AC, Labovitz AJ. Prevalence and clinical implications of atrial spontaneous contrast in patients undergoing transesophageal echocardiography. Am J Cardiol. 1990 May 1;65(16):1149-53. doi: 10.1016/0002-9149(90)90330-4.
- Background: PubMed 11346805Klein AL, Grimm RA, Murray RD, Apperson-Hansen C, Asinger RW, Black IW, Davidoff R, Erbel R, Halperin JL, Orsinelli DA, Porter TR, Stoddard MF; Assessment of Cardioversion Using Transesophageal Echocardiography Investigators. Use of transesophageal echocardiography to guide cardioversion in patients with atrial fibrillation. N Engl J Med. 2001 May 10;344(19):1411-20. doi: 10.1056/NEJM200105103441901.
- Background: PubMed 11823090Packer DL, Stevens CL, Curley MG, Bruce CJ, Miller FA, Khandheria BK, Oh JK, Sinak LJ, Seward JB. Intracardiac phased-array imaging: methods and initial clinical experience with high resolution, under blood visualization: initial experience with intracardiac phased-array ultrasound. J Am Coll Cardiol. 2002 Feb 6;39(3):509-16. doi: 10.1016/s0735-1097(01)01764-8.
- Background: PubMed 7671368Olgin JE, Kalman JM, Fitzpatrick AP, Lesh MD. Role of right atrial endocardial structures as barriers to conduction during human type I atrial flutter. Activation and entrainment mapping guided by intracardiac echocardiography. Circulation. 1995 Oct 1;92(7):1839-48. doi: 10.1161/01.cir.92.7.1839.
- Background: PubMed 9654229Epstein LM, Smith T, TenHoff H. Nonfluoroscopic transseptal catheterization: safety and efficacy of intracardiac echocardiographic guidance. J Cardiovasc Electrophysiol. 1998 Jun;9(6):625-30. doi: 10.1111/j.1540-8167.1998.tb00945.x.
- Background: PubMed 12756153Marrouche NF, Martin DO, Wazni O, Gillinov AM, Klein A, Bhargava M, Saad E, Bash D, Yamada H, Jaber W, Schweikert R, Tchou P, Abdul-Karim A, Saliba W, Natale A. Phased-array intracardiac echocardiography monitoring during pulmonary vein isolation in patients with atrial fibrillation: impact on outcome and complications. Circulation. 2003 Jun 3;107(21):2710-6. doi: 10.1161/01.CIR.0000070541.83326.15. Epub 2003 May 19.
- Background: PubMed 8087934Mudra H, Klauss V, Blasini R, Kroetz M, Rieber J, Regar E, Theisen K. Ultrasound guidance of Palmaz-Schatz intracoronary stenting with a combined intravascular ultrasound balloon catheter. Circulation. 1994 Sep;90(3):1252-61. doi: 10.1161/01.cir.90.3.1252.
- Background: PubMed 11170327Hijazi Z, Wang Z, Cao Q, Koenig P, Waight D, Lang R. Transcatheter closure of atrial septal defects and patent foramen ovale under intracardiac echocardiographic guidance: feasibility and comparison with transesophageal echocardiography. Catheter Cardiovasc Interv. 2001 Feb;52(2):194-9. doi: 10.1002/1522-726x(200102)52:23.0.co;2-4.
- Background: PubMed 15145112Ren JF, Marchlinski FE, Callans DJ. Left atrial thrombus associated with ablation for atrial fibrillation: identification with intracardiac echocardiography. J Am Coll Cardiol. 2004 May 19;43(10):1861-7. doi: 10.1016/j.jacc.2004.01.031.
- Background: PubMed 10511663Shanewise JS, Cheung AT, Aronson S, Stewart WJ, Weiss RL, Mark JB, Savage RM, Sears-Rogan P, Mathew JP, Quinones MA, Cahalan MK, Savino JS. ASE/SCA guidelines for performing a comprehensive intraoperative multiplane transesophageal echocardiography examination: recommendations of the American Society of Echocardiography Council for Intraoperative Echocardiography and the Society of Cardiovascular Anesthesiologists Task Force for Certification in Perioperative Transesophageal Echocardiography. J Am Soc Echocardiogr. 1999 Oct;12(10):884-900. doi: 10.1016/s0894-7317(99)70199-9. No abstract available.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Sanjeev Saksena, MD, FACC study chair
Professor, UMDNJ-RWJ Medical School
6 sites in 2 countries: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 1/2 study testing Intra-Cardiac Echocardiography guided Cardioversion, Intracardiac Echo and ICE in people with Atrial Fibrillation, run by EP MedSystems at 6 sites in 2 countries.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 13 inclusion and 5 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 11 May 2011. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 6 sites in United States, Netherlands. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this combined phase mean?
Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.
Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Prevalence of thrombi or spontaneous contrast detected by ICE or TEE (time frame: intraoperative). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT00281073, which also lists 23 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 11 May 2011; AzTrials last refreshed its copy on 30 Oct 2026.