Allometric-Pace Study

NCT ID: NCT05766462

Last Updated: 2025-02-07

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

73 participants

Study Classification

OBSERVATIONAL

Study Start Date

2023-03-20

Study Completion Date

2025-01-31

Brief Summary

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The goal of this observational study is to improve quality of life in sinus node dysfunction patients by utilizing allometric lower rate pacing (or called personalized lower rate, PLR) in standard commercially available dual-chamber pacemakers.

The primary objective is to achieve a significant improvement in patients' quality of life with use of PLR pacing in comparison with the control group with nominal lower rate in patients with implanted dual-chamber pacemaker.

The secondary objectives are to assess cardiac functional changes in echocardiography of ventricular mechanical performance with a PLR pacing in comparison with the control group with nominal lower rate, and to assess the viability of using elevated blood pressure as a marker for undetected bradycardia and providing allometric rate to correct bradycardia-related increase in arterial systolic blood pressure.

Detailed Description

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Conditions

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Sinus Node Dysfunction

Study Design

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Observational Model Type

CASE_CONTROL

Study Time Perspective

PROSPECTIVE

Study Groups

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PLR group

The pacemaker lower rate of PLR group will be set as 75 bpm and might be adjusted according to physician diagnosis based on patients situation.

Pacemaker lower rate setting

Intervention Type OTHER

Pacemaker lower rate is set by physician and may be adjusted according to the physician diagnosis.

control group

The pacemaker lower rate of control group will be set as 60 bpm.

No interventions assigned to this group

Interventions

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Pacemaker lower rate setting

Pacemaker lower rate is set by physician and may be adjusted according to the physician diagnosis.

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Patients are at age of equal to or more than 60 years old
* Patients have plan to implant dual-chamber pacemaker
* Resting sinus heart rate is equal or less than 60 bpm, or average heart rate detected through 24-hour dynamic electrocardiogram is equal or less than 60 bpm
* Patients have diagnosis of SND. If patients have both sinus node dysfunction and AV block, conduction system pacing shall be available
* Patients have a history of hypertension, two times of blood pressure measurements at office visit are equal to or more than 130 mmHg in systolic blood pressure, diastolic pressure is equal or less than 80 bpm

Exclusion Criteria

* Patients have or possible concomitant a diagnosis of heart failure, either reduced EF or preserved EF
* Patients have persistent or chronic atrial fibrillation or clinically significant paroxysmal atrial fibrillation
* Previously diagnosed with a history of organic heart disease: including congenital heart disease, coronary heart disease, old myocardial infarction, dilated cardiomyopathy, hypertrophic cardiomyopathy, cardiac amyloidosis, long QT syndrome, etc.
* Patients have a known secondary cause of hypertension
* Patients have hospitalization of a hypertensive emergency in the previous year
* Patients have a history of renal disease or renal-artery diseases
* Severe hepatic or renal dysfunction
* Active acute infection
* Patients cannot submit a signed informed consent form
* Patients are pregnant or plan to be pregnant during study period
* Patients participate in another study that will confound this study
Minimum Eligible Age

60 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Medtronic Cardiac Rhythm and Heart Failure

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Locations

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Shanxi Cardiovascular Hospital

Taiyuan, Shanxi, China

Site Status

West China Hospital

Chengdu, Sichuan, China

Site Status

The First People's Hospital of Yunnan Province

Kunming, Yunnan, China

Site Status

Countries

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China

References

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Bassil G, Zarzoso M, Noujaim SF. Allometric scaling of electrical excitation and propagation in the mammalian heart. J Theor Biol. 2017 Apr 21;419:238-242. doi: 10.1016/j.jtbi.2016.09.024. Epub 2016 Sep 26.

Reference Type BACKGROUND
PMID: 27686596 (View on PubMed)

Infeld M, Avram R, Wahlberg K, Silverman DN, Habel N, Lustgarten DL, Pletcher MJ, Olgin JE, Marcus GM, Meyer M. An approach towards individualized lower rate settings for pacemakers. Heart Rhythm O2. 2020 Dec;1(5):390-393. doi: 10.1016/j.hroo.2020.09.004. Epub 2020 Oct 6. No abstract available.

Reference Type BACKGROUND
PMID: 33604585 (View on PubMed)

Infeld M, Wahlberg K, Cicero J, Meagher S, Habel N, Muthu Krishnan A, Silverman DN, Lustgarten DL, Meyer M. Personalized pacing for diastolic dysfunction and heart failure with preserved ejection fraction: Design and rationale for the myPACE randomized controlled trial. Heart Rhythm O2. 2021 Dec 7;3(1):109-116. doi: 10.1016/j.hroo.2021.11.015. eCollection 2022 Feb.

Reference Type BACKGROUND
PMID: 35243443 (View on PubMed)

Other Identifiers

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Allometric-Pace Study

Identifier Type: -

Identifier Source: org_study_id

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