Please note that the copy function is not enabled for this field.
If you wish to
modify
existing outcomes, please copy and paste the current outcome text into the Update field.
LOGIN
CREATE ACCOUNT
LOGIN
CREATE ACCOUNT
MY TRIALS
REGISTER TRIAL
FAQs
HINTS AND TIPS
DEFINITIONS
Trial Review
The ANZCTR website will be unavailable from 1pm until 3pm (AEDT) on Wednesday the 30th of October for website maintenance. Please be sure to log out of the system in order to avoid any loss of data.
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been endorsed by the ANZCTR. Before participating in a study, talk to your health care provider and refer to this
information for consumers
Download to PDF
Trial details imported from ClinicalTrials.gov
For full trial details, please see the original record at
https://clinicaltrials.gov/study/NCT02004873
Registration number
NCT02004873
Ethics application status
Date submitted
3/12/2013
Date registered
9/12/2013
Date last updated
17/01/2018
Titles & IDs
Public title
Micra Transcatheter Pacing Study
Query!
Scientific title
Micra Transcatheter Pacing Study
Query!
Secondary ID [1]
0
0
Micra
Query!
Universal Trial Number (UTN)
Query!
Trial acronym
Query!
Linked study record
Query!
Health condition
Health condition(s) or problem(s) studied:
Class I or II Indication for Implantation of a Single Chamber Ventricular Pacemaker According to ACC/AHA/HRS 2001 Guidelines and Any National Guidelines
0
0
Query!
Condition category
Condition code
Intervention/exposure
Study type
Interventional
Query!
Description of intervention(s) / exposure
Experimental: Micra Pacemaker Implant -
Query!
Comparator / control treatment
Query!
Control group
Query!
Outcomes
Primary outcome [1]
0
0
Major Complications
Query!
Assessment method [1]
0
0
Micra system and/or procedure related major complication free rate at 6-months post-implant.
Query!
Timepoint [1]
0
0
Implant to 6 Months Post Implant
Query!
Primary outcome [2]
0
0
Pacing Capture Threshold
Query!
Assessment method [2]
0
0
Subjects that have an adequate pacing capture threshold (PCT) at the 6-month post-implant visit, which is defined as PCT \<=2 volts at 0.24 ms pulse width and the increase in PCT from implant to 6 months \<=1.5 volts. The pacing capture threshold is the minimal electrical stimulus required to produce consistent cardiac depolarization. It is the minimum amount of energy that is required for a pacemaker to pace the heart.
Query!
Timepoint [2]
0
0
6 Months Post Implant
Query!
Secondary outcome [1]
0
0
Ventricular Capture Management Threshold
Query!
Assessment method [1]
0
0
Subjects that have a ventricular capture management threshold (VCMT) that is within 0.5 Volts of the manual (auto decrement) PCT (at 0.24 ms pulse width) at the 6-month post-implant visit. The VCMT is an automatically measured pacing capture threshold that is measured by the Micra device's pacing algorithm. In contrast, the manual (auto decrement) pacing capture threshold is measured by the clinician during a study visit.
Query!
Timepoint [1]
0
0
6 Months Post Implant
Query!
Secondary outcome [2]
0
0
Rate Response Operation of Micra
Query!
Assessment method [2]
0
0
Assessment of whether the Micra sensor-indicated rate derived from the input of the accelerometer during the Minnesota Pacemaker Response Exercise Protocol (M-PREP) treadmill test conducted at the 3-month and 6-month follow-up visits was proportional to the workload. The sensor-indicated rate (in min\^-1) and workload (in METS) were normalized for each subject relative to their minimum and maximum possible values so the normalized values have a minimum possible value of zero and a maximum possible value of 1. These normalized values were used in a random effect linear regression model to assess the relationship between the sensor-indicated rate and workload via estimation of the Kay-Wilkoff slope parameter. The tests at 3-month and 6-month visits were combined in one analysis.
Query!
Timepoint [2]
0
0
3 Months and 6 Months Post Implant (combined analysis)
Query!
Eligibility
Key inclusion criteria
* Subjects who have a Class I or II indication for implantation of a single chamber ventricular pacemaker according to ACC/AHA/HRS 2008 guidelines and any national guidelines
* Subjects who are able and willing to undergo the study requirements and are expected to be geographically stable for the duration of the follow-up.
* Subjects who are at least 18 years of age (or older, if required by local law).
Query!
Minimum age
18
Years
Query!
Query!
Maximum age
No limit
Query!
Query!
Sex
Both males and females
Query!
Can healthy volunteers participate?
No
Query!
Key exclusion criteria
* Subjects who are entirely pacemaker dependent (escape rhythm <30 bpm). (Please note: Subjects who are entirely pacemaker dependent (escape rhythm <30 bpm) can now be included in the study. Medtronic notified all sites on July 23, 2014 that the restriction against pacemaker dependent subjects was lifted, following review of the Early Performance Assessment.)
* Subject has an existing or prior pacemaker, ICD or CRT device implant.
* Subject has unstable angina pectoris or has had an acute myocardial infarction (AMI) in the 30 days prior to eligibility assessment.
* Subjects with current implantation of neurostimulator or any other chronically implanted device which uses current in the body. Note that a temporary pacing wire is allowed.
* Subjects with a mechanical tricuspid valve, implanted vena cava filter, or left ventricular assist device (LVAD).
* Subjects who are morbidly obese and physician believes telemetry communication of =5 inches (12.7 cm) could not be obtained with programmer head.
* Subjects whose femoral venous anatomy is unable to accommodate a 23 French introducer sheath or implant on the right side of the heart (for example, due to obstructions or severe tortuosity) in the opinion of the implanter.
* Subjects who are considered as unable to tolerate an urgent sternotomy
* Subjects with a known intolerance to Nickel-Titanium (Nitinol) Alloy.
* Subjects for whom a single dose of 1.0mg dexamethasone acetate may be contraindicated.
* Subjects with a life expectancy of less than 12- months.
* Subjects who are currently enrolled or planning to participate in a potentially confounding drug or device trial during the course of this study. Coenrollment in concurrent trials is only allowed when document pre-approval is obtained from the Medtronic study manager.
* Pregnant women, or women of child bearing potential and who are not on a reliable form of birth control.
* Subjects with exclusion criteria required by local law (e.g. age, breast feeding, etc.).
Query!
Study design
Purpose of the study
Treatment
Query!
Allocation to intervention
NA
Query!
Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
Query!
Methods used to generate the sequence in which subjects will be randomised (sequence generation)
Query!
Masking / blinding
Open (masking not used)
Query!
Who is / are masked / blinded?
Query!
Query!
Query!
Query!
Intervention assignment
Single group
Query!
Other design features
Query!
Phase
NA
Query!
Type of endpoint/s
Query!
Statistical methods / analysis
Query!
Recruitment
Recruitment status
Completed
Query!
Data analysis
Query!
Reason for early stopping/withdrawal
Query!
Other reasons
Query!
Date of first participant enrolment
Anticipated
Query!
Actual
1/11/2013
Query!
Date of last participant enrolment
Anticipated
Query!
Actual
Query!
Date of last data collection
Anticipated
Query!
Actual
1/05/2017
Query!
Sample size
Target
Query!
Accrual to date
Query!
Final
744
Query!
Recruitment in Australia
Recruitment state(s)
QLD
Query!
Recruitment hospital [1]
0
0
Princess Alexandria Hospital - Woolloongabba
Query!
Recruitment postcode(s) [1]
0
0
- Woolloongabba
Query!
Recruitment outside Australia
Country [1]
0
0
United States of America
Query!
State/province [1]
0
0
California
Query!
Country [2]
0
0
United States of America
Query!
State/province [2]
0
0
Connecticut
Query!
Country [3]
0
0
United States of America
Query!
State/province [3]
0
0
Florida
Query!
Country [4]
0
0
United States of America
Query!
State/province [4]
0
0
Georgia
Query!
Country [5]
0
0
United States of America
Query!
State/province [5]
0
0
Iowa
Query!
Country [6]
0
0
United States of America
Query!
State/province [6]
0
0
Michigan
Query!
Country [7]
0
0
United States of America
Query!
State/province [7]
0
0
Minnesota
Query!
Country [8]
0
0
United States of America
Query!
State/province [8]
0
0
Missouri
Query!
Country [9]
0
0
United States of America
Query!
State/province [9]
0
0
New Jersey
Query!
Country [10]
0
0
United States of America
Query!
State/province [10]
0
0
New York
Query!
Country [11]
0
0
United States of America
Query!
State/province [11]
0
0
North Carolina
Query!
Country [12]
0
0
United States of America
Query!
State/province [12]
0
0
Ohio
Query!
Country [13]
0
0
United States of America
Query!
State/province [13]
0
0
Oklahoma
Query!
Country [14]
0
0
United States of America
Query!
State/province [14]
0
0
Oregon
Query!
Country [15]
0
0
United States of America
Query!
State/province [15]
0
0
Pennsylvania
Query!
Country [16]
0
0
United States of America
Query!
State/province [16]
0
0
Tennessee
Query!
Country [17]
0
0
United States of America
Query!
State/province [17]
0
0
Texas
Query!
Country [18]
0
0
United States of America
Query!
State/province [18]
0
0
Virginia
Query!
Country [19]
0
0
United States of America
Query!
State/province [19]
0
0
Wisconsin
Query!
Country [20]
0
0
Austria
Query!
State/province [20]
0
0
Linz
Query!
Country [21]
0
0
Canada
Query!
State/province [21]
0
0
Quebec
Query!
Country [22]
0
0
China
Query!
State/province [22]
0
0
Beijing
Query!
Country [23]
0
0
Czechia
Query!
State/province [23]
0
0
Praha
Query!
Country [24]
0
0
Denmark
Query!
State/province [24]
0
0
København
Query!
Country [25]
0
0
France
Query!
State/province [25]
0
0
Bordeaux
Query!
Country [26]
0
0
Greece
Query!
State/province [26]
0
0
Heraklion
Query!
Country [27]
0
0
Hungary
Query!
State/province [27]
0
0
Budapest
Query!
Country [28]
0
0
India
Query!
State/province [28]
0
0
Hyderabad
Query!
Country [29]
0
0
India
Query!
State/province [29]
0
0
New Delhi
Query!
Country [30]
0
0
Italy
Query!
State/province [30]
0
0
Pisa
Query!
Country [31]
0
0
Japan
Query!
State/province [31]
0
0
Osaka
Query!
Country [32]
0
0
Japan
Query!
State/province [32]
0
0
Shinagawa-Ku
Query!
Country [33]
0
0
Japan
Query!
State/province [33]
0
0
Tokyo
Query!
Country [34]
0
0
Japan
Query!
State/province [34]
0
0
Yokohama
Query!
Country [35]
0
0
Malaysia
Query!
State/province [35]
0
0
Kuala Lumpur
Query!
Country [36]
0
0
Netherlands
Query!
State/province [36]
0
0
Amsterdam
Query!
Country [37]
0
0
Netherlands
Query!
State/province [37]
0
0
Eindhoven
Query!
Country [38]
0
0
Netherlands
Query!
State/province [38]
0
0
Nieuwegein
Query!
Country [39]
0
0
Serbia
Query!
State/province [39]
0
0
Belgrade
Query!
Country [40]
0
0
South Africa
Query!
State/province [40]
0
0
Cape Town
Query!
Country [41]
0
0
Spain
Query!
State/province [41]
0
0
Barcelona
Query!
Country [42]
0
0
United Kingdom
Query!
State/province [42]
0
0
Southampton
Query!
Funding & Sponsors
Primary sponsor type
Commercial sector/industry
Query!
Name
Medtronic Cardiac Rhythm and Heart Failure
Query!
Address
Query!
Country
Query!
Ethics approval
Ethics application status
Query!
Summary
Brief summary
The purpose of this clinical study is to evaluate the safety and efficacy of the Micra Transcatheter Pacing System and to assess long term performance.
Query!
Trial website
https://clinicaltrials.gov/study/NCT02004873
Query!
Trial related presentations / publications
Piccini JP, Cunnane R, Steffel J, El-Chami MF, Reynolds D, Roberts PR, Soejima K, Steinwender C, Garweg C, Chinitz L, Ellis CR, Stromberg K, Fagan DH, Mont L. Development and validation of a risk score for predicting pericardial effusion in patients undergoing leadless pacemaker implantation: experience with the Micra transcatheter pacemaker. Europace. 2022 Jul 21;24(7):1119-1126. doi: 10.1093/europace/euab315. El-Chami MF, Shinn T, Bansal S, Martinez-Sande JL, Clementy N, Augostini R, Ravindran B, Sagi V, Ramanna H, Garweg C, Roberts PR, Soejima K, Stromberg K, Fagan DH, Zuniga N, Piccini JP. Leadless pacemaker implant with concomitant atrioventricular node ablation: Experience with the Micra transcatheter pacemaker. J Cardiovasc Electrophysiol. 2021 Mar;32(3):832-841. doi: 10.1111/jce.14881. Epub 2021 Jan 23. Garg A, Koneru JN, Fagan DH, Stromberg K, Padala SK, El-Chami MF, Roberts PR, Piccini JP, Cheng A, Ellenbogen KA. Morbidity and mortality in patients precluded for transvenous pacemaker implantation: Experience with a leadless pacemaker. Heart Rhythm. 2020 Dec;17(12):2056-2063. doi: 10.1016/j.hrthm.2020.07.035. Epub 2020 Aug 4. Tjong FVY, Beurskens NEG, de Groot JR, Waweru C, Liu S, Ritter P, Reynolds D, Wilde AAM, Knops RE; Micra Investigators. Health-related quality of life impact of a transcatheter pacing system. J Cardiovasc Electrophysiol. 2018 Dec;29(12):1697-1704. doi: 10.1111/jce.13726. Epub 2018 Oct 15. El-Chami MF, Al-Samadi F, Clementy N, Garweg C, Martinez-Sande JL, Piccini JP, Iacopino S, Lloyd M, Vinolas Prat X, Jacobsen MD, Ritter P, Johansen JB, Tondo C, Liu F, Fagan DH, Eakley AK, Roberts PR. Updated performance of the Micra transcatheter pacemaker in the real-world setting: A comparison to the investigational study and a transvenous historical control. Heart Rhythm. 2018 Dec;15(12):1800-1807. doi: 10.1016/j.hrthm.2018.08.005. Epub 2018 Aug 10. Okabe T, El-Chami MF, Lloyd MS, Buck B, Gornick CC, Moore JC, Augostini RS, Hummel JD. Leadless pacemaker implantation and concurrent atrioventricular junction ablation in patients with atrial fibrillation. Pacing Clin Electrophysiol. 2018 May;41(5):504-510. doi: 10.1111/pace.13312. Epub 2018 Apr 16. Soejima K, Asano T, Ishikawa T, Kusano K, Sato T, Okamura H, Matsumoto K, Taguchi W, Stromberg K, Lande J, Kobayashi Y; Micra Transcatheter Pacing Study Group. Performance of Leadless Pacemaker in Japanese Patients vs. Rest of the World - Results From a Global Clinical Trial. Circ J. 2017 Oct 25;81(11):1589-1595. doi: 10.1253/circj.CJ-17-0259. Epub 2017 May 30. Lloyd M, Reynolds D, Sheldon T, Stromberg K, Hudnall JH, Demmer WM, Omar R, Ritter P, Hummel J, Mont L, Steinwender C, Duray GZ. Rate adaptive pacing in an intracardiac pacemaker. Heart Rhythm. 2017 Feb;14(2):200-205. doi: 10.1016/j.hrthm.2016.11.016. Epub 2016 Nov 15. Reynolds D, Duray GZ, Omar R, Soejima K, Neuzil P, Zhang S, Narasimhan C, Steinwender C, Brugada J, Lloyd M, Roberts PR, Sagi V, Hummel J, Bongiorni MG, Knops RE, Ellis CR, Gornick CC, Bernabei MA, Laager V, Stromberg K, Williams ER, Hudnall JH, Ritter P; Micra Transcatheter Pacing Study Group. A Leadless Intracardiac Transcatheter Pacing System. N Engl J Med. 2016 Feb 11;374(6):533-41. doi: 10.1056/NEJMoa1511643. Epub 2015 Nov 9. Ritter P, Duray GZ, Steinwender C, Soejima K, Omar R, Mont L, Boersma LV, Knops RE, Chinitz L, Zhang S, Narasimhan C, Hummel J, Lloyd M, Simmers TA, Voigt A, Laager V, Stromberg K, Bonner MD, Sheldon TJ, Reynolds D; Micra Transcatheter Pacing Study Group. Early performance of a miniaturized leadless cardiac pacemaker: the Micra Transcatheter Pacing Study. Eur Heart J. 2015 Oct 1;36(37):2510-9. doi: 10.1093/eurheartj/ehv214. Epub 2015 Jun 4. Ritter P, Duray GZ, Zhang S, Narasimhan C, Soejima K, Omar R, Laager V, Stromberg K, Williams E, Reynolds D; Micra Transcatheter Pacing Study Group. The rationale and design of the Micra Transcatheter Pacing Study: safety and efficacy of a novel miniaturized pacemaker. Europace. 2015 May;17(5):807-13. doi: 10.1093/europace/euv026. Epub 2015 Apr 7.
Query!
Public notes
Query!
Contacts
Principal investigator
Name
0
0
Dwight Reynolds
Query!
Address
0
0
University of Oklahoma
Query!
Country
0
0
Query!
Phone
0
0
Query!
Fax
0
0
Query!
Email
0
0
Query!
Contact person for public queries
Name
0
0
Query!
Address
0
0
Query!
Country
0
0
Query!
Phone
0
0
Query!
Fax
0
0
Query!
Email
0
0
Query!
Contact person for scientific queries
No information has been provided regarding IPD availability
What supporting documents are/will be available?
No Supporting Document Provided
Results publications and other study-related documents
No documents have been uploaded by study researchers.
Results are available at
https://clinicaltrials.gov/study/NCT02004873
Download to PDF