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Intra-procedural Transthoracic EChocardiogram to Facilitate Left Bundle Branch Area Pacing (LBBAP)

Intra-procedural Transthoracic EChocardiogram to Facilitate LBBAP

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05646251
Acronym
EC-LBBAP
Enrollment
33
Registered
2022-12-12
Start date
2023-03-01
Completion date
2024-10-27
Last updated
2025-10-01

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Heart Failure

Brief summary

The goal of this observational study is to learn more about whether or not the use of heart ultrasound during pacemaker implantation is helpful. The main questions this aims to answer are: 1. Does this help the doctors with figuring out the wire location during implantation? 2. Does this reduce the wire placement procedure time? 3. Does this reduce the x-ray imaging time during the procedure? Participants will be asked to: 1. Have a physical exam and Echocardiogram (ECG) at initial visit, 2 weeks post implant, and 3 months post implant. 2. Have a urine pregnancy test (if applicable) 3. Have a heart ultrasound during implant procedure 4. Answer questions related to heart failure symptoms to see what stage of heart failure is present 5. Have device interrogation (a wand placed over the chest to see that the device is working properly) at a visit 2 weeks post implant and at 3 months post implant.

Detailed description

The EC-LBBAP study is a prospective, single-enter, observational research study. The study team will identify all patients who satisfy the inclusion and exclusion criteria. The study team will evaluate the feasibility and success rates of echocardiogram guided LBBAP lead implantation. Eligible patients will undergo LBBAP using Medtronic 3830 lead and C315His sheath. LBBAP will be confirmed at implant using left bundle potentials recorded from the lead, ECG morphology during unipolar and bipolar pacing, peak Left Ventricular Pacing (LV) activation time and lead depth in the 2D transthoracic echo at implant. During implant procedure, transthoracic echo windows will be identified and documented: Parasternal short and long axis, apical 2 and 4 chamber views and subcostal views to visualize the proximal interventricular septum. Following venous access using cephalic vein cut-down or ultrasound guided axillary vein access, the lead implantation in the left bundle branch region will be guided by echocardiography. Retrospectively, the study team will identify 20 consecutive previous patients who satisfy inclusion and exclusion criteria (control patients). Twenty patients will undergo intraprocedural transthoracic echocardiogram via standard practices. An additional 10 patients will undergo intraprocedural transthoracic echocardiogram using a hand-held ultrasound device. The study team will compare the difference in procedural success between case and control patients.

Interventions

DEVICEHeart Ultrasound

A wand is placed on the chest to use soundwaves to make a picture of the heart and shows how the muscle and valves work. This helps with device placement.

Sponsors

Medtronic
CollaboratorINDUSTRY
Geisinger Clinic
Lead SponsorOTHER

Study design

Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Intervention model description

Twenty patients will undergo intraprocedural transthoracic echocardiogram via standard practices. An additional 10 patients will undergo intraprocedural transthoracic echocardiogram using a hand-held ultrasound device. The study team will retrospectively identify 30 consecutive previous patients who satisfy inclusion and exclusion criteria (control patients). The study team will compare the difference in procedural success between Case and Control patients.

Eligibility

Sex/Gender
ALL
Age
18 Years to 89 Years
Healthy volunteers
No

Inclusion criteria

* patient with indication for permanent pacemaker or Implantable Cardioverter Defibrillator (ICD) utilizing conduction system pacing lead for bradycardia or cardiac resynchronization therapy * patient is willing to comply with all study procedures and be available for the duration of the study

Exclusion criteria

* Inability to provide informed consent * pregnant * enrolled in a concurrent study that may confound the results of this study

Design outcomes

Primary

MeasureTime frameDescription
A Positive Success Rate of LBBAP Utilization With Intraprocedural Transthoracic EchocardiogramPerioperative, through study completion, an average of 3 monthsPositive success rate of LBBAP is measured by Left bundle branch capture for participants, measured during implant
Difference of Fluoroscopy/Procedure Duration Between GroupsPerioperativeDifference in fluoroscopy and procedure duration using echo guided LBBAP lead implantation compared to control data for standard LBBAP lead implantation
Number of Participants Determined to be Eligible for the Work-flow and Echocardiographic ProceduresThrough study completion, an average of 3 monthsThis measure is to determine if the workflow is feasible in regular practice (echo tech availability, lab availability, duration of comparative procedures) between intervention group and controls, and to determine if the identifying echocardiographic windows is able to be performed pre operatively on all intervention patients This measure is to determine the number of participants that the workflow is feasible for and could be performed on in regular practice (echo tech availability, lab availability, duration of comparative procedures)

Countries

United States

Participant flow

Recruitment details

Potential participants will be identified by clinician referrals at Geisinger Wyoming Valley Heart Hosptial. Research staff will contact potential subjects and invite them to participate.

Pre-assignment details

21 EC-LBBAP participants were consented and enrolled in the study. One participant did not complete the study and was exited, as echo was unable to be complete at implant. 12 EC-LBBAP handheld participants were consented and enrolled in the study. Two participants did not complete the study and were exited, as echo was unable to be complete at implant. 30 Participants in the Control Arm/Group are not considered enrolled and therefore, not included in the Number Enrolled.

Participants by arm

ArmCount
EC-LBBAP Participant
A heart ultrasound will be used during a pacemaker implant procedure
20
Control Participant
A pacemaker will be implanted using routine protocol. This is retrospectively collected; patients are not actively enrolled in this arm.
30
ECLBBAP Handheld Participant
A heart ultrasound using a handheld ultrasound device will be used during a pacemaker implant procedure
10
Total60

Withdrawals & dropouts

PeriodReasonFG000FG001FG002
Overall StudyPhysician Decision102

Baseline characteristics

CharacteristicEC-LBBAP ParticipantTotalECLBBAP Handheld ParticipantControl Participant
Age, Continuous71.35 years
STANDARD_DEVIATION 10.236
74.45 years
STANDARD_DEVIATION 10.31
72.8 years
STANDARD_DEVIATION 12.5
77.06 years
STANDARD_DEVIATION 9.18
Atrial Fibrillation15 Participants41 Participants5 Participants21 Participants
BMI29.8 kg/m^2
STANDARD_DEVIATION 5.63
28.8 kg/m^2
STANDARD_DEVIATION 5.58
26.9 kg/m^2
STANDARD_DEVIATION 6.48
28.74 kg/m^2
STANDARD_DEVIATION 5.27
Cardiomyopathy7 Participants33 Participants5 Participants21 Participants
Coronary artery disease9 Participants24 Participants3 Participants12 Participants
Diabetes5 Participants20 Participants5 Participants10 Participants
Hypertension17 Participants55 Participants10 Participants28 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
0 Participants1 Participants0 Participants1 Participants
Race (NIH/OMB)
Black or African American
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants1 Participants0 Participants1 Participants
Race (NIH/OMB)
White
20 Participants58 Participants10 Participants28 Participants
Sex: Female, Male
Female
10 Participants25 Participants4 Participants11 Participants
Sex: Female, Male
Male
10 Participants35 Participants6 Participants19 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
deaths
Total, all-cause mortality
0 / 200 / 300 / 10
other
Total, other adverse events
0 / 200 / 300 / 10
serious
Total, serious adverse events
0 / 200 / 300 / 10

Outcome results

Primary

A Positive Success Rate of LBBAP Utilization With Intraprocedural Transthoracic Echocardiogram

Positive success rate of LBBAP is measured by Left bundle branch capture for participants, measured during implant

Time frame: Perioperative, through study completion, an average of 3 months

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
EC-LBBAP ParticipantA Positive Success Rate of LBBAP Utilization With Intraprocedural Transthoracic Echocardiogram19 Participants
EC-LBBAP Handheld ParticipantA Positive Success Rate of LBBAP Utilization With Intraprocedural Transthoracic Echocardiogram10 Participants
Primary

Difference of Fluoroscopy/Procedure Duration Between Groups

Difference in fluoroscopy and procedure duration using echo guided LBBAP lead implantation compared to control data for standard LBBAP lead implantation

Time frame: Perioperative

ArmMeasureGroupValue (MEDIAN)Dispersion
EC-LBBAP ParticipantDifference of Fluoroscopy/Procedure Duration Between GroupsProcedure duration101 minStandard Deviation 27
EC-LBBAP ParticipantDifference of Fluoroscopy/Procedure Duration Between GroupsFluoroscopy duration8.9 minStandard Deviation 7.9
EC-LBBAP Handheld ParticipantDifference of Fluoroscopy/Procedure Duration Between GroupsProcedure duration89 minStandard Deviation 29
EC-LBBAP Handheld ParticipantDifference of Fluoroscopy/Procedure Duration Between GroupsFluoroscopy duration10.1 minStandard Deviation 6.5
Standard LBBPDifference of Fluoroscopy/Procedure Duration Between GroupsProcedure duration95 minStandard Deviation 39
Standard LBBPDifference of Fluoroscopy/Procedure Duration Between GroupsFluoroscopy duration13.5 minStandard Deviation 8.5
Primary

Number of Participants Determined to be Eligible for the Work-flow and Echocardiographic Procedures

This measure is to determine if the workflow is feasible in regular practice (echo tech availability, lab availability, duration of comparative procedures) between intervention group and controls, and to determine if the identifying echocardiographic windows is able to be performed pre operatively on all intervention patients This measure is to determine the number of participants that the workflow is feasible for and could be performed on in regular practice (echo tech availability, lab availability, duration of comparative procedures)

Time frame: Through study completion, an average of 3 months

Population: Workflow defined and echo images obtained to facilitate LBBAP in participants in the ECLBBAP arm

ArmMeasureValue (NUMBER)
EC-LBBAP ParticipantNumber of Participants Determined to be Eligible for the Work-flow and Echocardiographic Procedures20 participants
EC-LBBAP Handheld ParticipantNumber of Participants Determined to be Eligible for the Work-flow and Echocardiographic Procedures10 participants

Source: ClinicalTrials.gov · Data processed: Feb 6, 2026