Trial Outcomes & Findings for ECG Belt for CRT Response (NCT NCT03504020)

NCT ID: NCT03504020

Last Updated: 2023-02-03

Results Overview

Relative (%) change in LVESV from the baseline measurement to the 6 month measurement.

Recruitment status

COMPLETED

Study phase

NA

Target enrollment

498 participants

Primary outcome timeframe

baseline to 6 months

Results posted on

2023-02-03

Participant Flow

* 498 pts enrolled, 55 exits prior to randomization * 443 pts randomized, 35 pts not implanted

Participant milestones

Participant milestones
Measure
ECG Belt
The ECG Belt arm will utilize the ECG Belt Research System at implant and all follow up visits. \> \> ECG Belt Research System: The ECG Belt Research System is used to identify the best vector and programming parameters.
Control Arm
Standard CRT through 6 months follow-up.
Overall Study
STARTED
200
208
Overall Study
COMPLETED
161
172
Overall Study
NOT COMPLETED
39
36

Reasons for withdrawal

Withdrawal data not reported

Baseline Characteristics

Race and Ethnicity were not collected from any participant.

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
ECG Belt
n=200 Participants
The ECG Belt arm will utilize the ECG Belt Research System at implant and all follow up visits.\> \> ECG Belt Research System: The ECG Belt Research System is used to identify the best vector and programming parameters.
Control Arm
n=208 Participants
Standard CRT through 6 months follow-up.
Total
n=408 Participants
Total of all reporting groups
Age, Continuous
69.7 years
STANDARD_DEVIATION 10.4 • n=200 Participants
67.8 years
STANDARD_DEVIATION 10.1 • n=208 Participants
68.8 years
STANDARD_DEVIATION 10.3 • n=408 Participants
Sex: Female, Male
Female
44 Participants
n=200 Participants
41 Participants
n=208 Participants
85 Participants
n=408 Participants
Sex: Female, Male
Male
156 Participants
n=200 Participants
167 Participants
n=208 Participants
323 Participants
n=408 Participants
Race and Ethnicity Not Collected
0 Participants
Race and Ethnicity were not collected from any participant.

PRIMARY outcome

Timeframe: baseline to 6 months

Population: Patients were only included in the analysis if they completed the Baseline and 6-month visit. For some patients, if the 6-month visit was not available, but the 9-month visit was, then the 9-month visit was used.

Relative (%) change in LVESV from the baseline measurement to the 6 month measurement.

Outcome measures

Outcome measures
Measure
ECG Belt
n=163 Participants
The ECG Belt arm will utilize the ECG Belt Research System at implant and all follow up visits. \> \> ECG Belt Research System: The ECG Belt Research System is used to identify the best vector and programming parameters.
Control Arm
n=175 Participants
Standard CRT through 6 months follow-up.
Change in Left Ventricular End Systolic Volume (LVESV) From Baseline to 6 Months Post-implant.
-11.7 Percent Change
Standard Deviation 29.0
-14.7 Percent Change
Standard Deviation 29.6

Adverse Events

ECG Belt

Serious events: 68 serious events
Other events: 0 other events
Deaths: 12 deaths

Control Arm

Serious events: 52 serious events
Other events: 0 other events
Deaths: 6 deaths

Serious adverse events

Serious adverse events
Measure
ECG Belt
n=200 participants at risk
The ECG Belt arm will utilize the ECG Belt Research System at implant and all follow up visits. ECG Belt Research System: The ECG Belt Research System is used to identify the best vector and programming parameters.
Control Arm
n=208 participants at risk
Standard CRT through 9 months follow-up.
Blood and lymphatic system disorders
Anaemia
1.5%
3/200 • Number of events 4 • Enrollment- 9 months
0.00%
0/208 • Enrollment- 9 months
Blood and lymphatic system disorders
Blood Loss Anaemia
1.0%
2/200 • Number of events 2 • Enrollment- 9 months
0.00%
0/208 • Enrollment- 9 months
Blood and lymphatic system disorders
Nephrogenic Anaemia
0.50%
1/200 • Number of events 1 • Enrollment- 9 months
0.00%
0/208 • Enrollment- 9 months
Cardiac disorders
Accelerated Idioventricular Rhythm
0.50%
1/200 • Number of events 1 • Enrollment- 9 months
0.00%
0/208 • Enrollment- 9 months
Cardiac disorders
Acute Coronary Syndrome
0.00%
0/200 • Enrollment- 9 months
0.48%
1/208 • Number of events 2 • Enrollment- 9 months
Cardiac disorders
Acute Left Ventricular Failure
1.0%
2/200 • Number of events 4 • Enrollment- 9 months
2.4%
5/208 • Number of events 5 • Enrollment- 9 months
Cardiac disorders
Acute Myocardial Infarction
0.00%
0/200 • Enrollment- 9 months
0.48%
1/208 • Number of events 1 • Enrollment- 9 months
Cardiac disorders
Angina Pectoris
0.00%
0/200 • Enrollment- 9 months
0.96%
2/208 • Number of events 2 • Enrollment- 9 months
Cardiac disorders
Arrhythmic Storm
1.5%
3/200 • Number of events 3 • Enrollment- 9 months
0.48%
1/208 • Number of events 1 • Enrollment- 9 months
Cardiac disorders
Atrial Fibrillation
3.0%
6/200 • Number of events 6 • Enrollment- 9 months
1.4%
3/208 • Number of events 3 • Enrollment- 9 months
Cardiac disorders
Atrial Flutter
0.50%
1/200 • Number of events 1 • Enrollment- 9 months
0.48%
1/208 • Number of events 1 • Enrollment- 9 months
Cardiac disorders
Atrial Thrombosis
0.00%
0/200 • Enrollment- 9 months
0.48%
1/208 • Number of events 1 • Enrollment- 9 months
Cardiac disorders
Cardiac Arrest
1.0%
2/200 • Number of events 2 • Enrollment- 9 months
0.48%
1/208 • Number of events 1 • Enrollment- 9 months
Cardiac disorders
Cardiac Failure
5.0%
10/200 • Number of events 11 • Enrollment- 9 months
3.4%
7/208 • Number of events 17 • Enrollment- 9 months
Cardiac disorders
Cardiac Failure Acute
4.5%
9/200 • Number of events 10 • Enrollment- 9 months
0.96%
2/208 • Number of events 3 • Enrollment- 9 months
Cardiac disorders
Cardiac Failure Chronic
0.00%
0/200 • Enrollment- 9 months
0.48%
1/208 • Number of events 1 • Enrollment- 9 months
Cardiac disorders
Cardiac Failure Congestive
4.0%
8/200 • Number of events 10 • Enrollment- 9 months
1.9%
4/208 • Number of events 4 • Enrollment- 9 months
Cardiac disorders
Cardiac Tamponade
0.50%
1/200 • Number of events 1 • Enrollment- 9 months
0.00%
0/208 • Enrollment- 9 months
Cardiac disorders
Cardiac Ventricular Thrombosis
1.0%
2/200 • Number of events 2 • Enrollment- 9 months
0.00%
0/208 • Enrollment- 9 months
Cardiac disorders
Cardiogenic Shock
1.0%
2/200 • Number of events 3 • Enrollment- 9 months
0.48%
1/208 • Number of events 1 • Enrollment- 9 months
Cardiac disorders
Chronic Left Ventricular Failure
0.50%
1/200 • Number of events 1 • Enrollment- 9 months
0.00%
0/208 • Enrollment- 9 months
Cardiac disorders
Ischaemic Cardiomyopathy
0.50%
1/200 • Number of events 1 • Enrollment- 9 months
0.00%
0/208 • Enrollment- 9 months
Cardiac disorders
Mitral Valve Incompetence
1.0%
2/200 • Number of events 2 • Enrollment- 9 months
0.48%
1/208 • Number of events 1 • Enrollment- 9 months
Cardiac disorders
Myocardial Infarction
0.50%
1/200 • Number of events 1 • Enrollment- 9 months
0.00%
0/208 • Enrollment- 9 months
Cardiac disorders
Myocardial Ischaemia
0.50%
1/200 • Number of events 1 • Enrollment- 9 months
0.00%
0/208 • Enrollment- 9 months
Cardiac disorders
Pericardial Effusion
1.0%
2/200 • Number of events 3 • Enrollment- 9 months
0.48%
1/208 • Number of events 1 • Enrollment- 9 months
Cardiac disorders
Pericarditis
0.00%
0/200 • Enrollment- 9 months
0.48%
1/208 • Number of events 1 • Enrollment- 9 months
Cardiac disorders
Pulseless Electrical Activity
0.50%
1/200 • Number of events 1 • Enrollment- 9 months
0.00%
0/208 • Enrollment- 9 months
Cardiac disorders
Supraventricular Tachycardia
0.00%
0/200 • Enrollment- 9 months
0.96%
2/208 • Number of events 2 • Enrollment- 9 months
Cardiac disorders
Ventricular Arrhythmia
0.50%
1/200 • Number of events 1 • Enrollment- 9 months
0.00%
0/208 • Enrollment- 9 months
Cardiac disorders
Ventricular Fibrillation
0.50%
1/200 • Number of events 1 • Enrollment- 9 months
0.96%
2/208 • Number of events 2 • Enrollment- 9 months
Cardiac disorders
Ventricular Tachycardia
2.5%
5/200 • Number of events 6 • Enrollment- 9 months
0.96%
2/208 • Number of events 2 • Enrollment- 9 months
Endocrine disorders
Hypothyroidism
0.50%
1/200 • Number of events 1 • Enrollment- 9 months
0.00%
0/208 • Enrollment- 9 months
Eye disorders
Cataract
0.50%
1/200 • Number of events 1 • Enrollment- 9 months
0.00%
0/208 • Enrollment- 9 months
Eye disorders
Retinal Detachment
0.00%
0/200 • Enrollment- 9 months
0.48%
1/208 • Number of events 1 • Enrollment- 9 months
Gastrointestinal disorders
Ascites
0.00%
0/200 • Enrollment- 9 months
0.48%
1/208 • Number of events 1 • Enrollment- 9 months
Gastrointestinal disorders
Dysphagia
0.50%
1/200 • Number of events 1 • Enrollment- 9 months
0.00%
0/208 • Enrollment- 9 months
Gastrointestinal disorders
Gastrointestinal Haemorrhage
0.00%
0/200 • Enrollment- 9 months
0.48%
1/208 • Number of events 1 • Enrollment- 9 months
Gastrointestinal disorders
Pancreatitis Acute
0.00%
0/200 • Enrollment- 9 months
0.96%
2/208 • Number of events 2 • Enrollment- 9 months
General disorders
Asthenia
1.0%
2/200 • Number of events 2 • Enrollment- 9 months
0.00%
0/208 • Enrollment- 9 months
General disorders
Inflammation
0.50%
1/200 • Number of events 1 • Enrollment- 9 months
0.00%
0/208 • Enrollment- 9 months
General disorders
Multiple Organ Dysfunction Syndrome
0.00%
0/200 • Enrollment- 9 months
0.48%
1/208 • Number of events 1 • Enrollment- 9 months
General disorders
Unevaluable Event
0.00%
0/200 • Enrollment- 9 months
0.48%
1/208 • Number of events 1 • Enrollment- 9 months
Immune system disorders
Transplant Rejection
0.00%
0/200 • Enrollment- 9 months
0.48%
1/208 • Number of events 1 • Enrollment- 9 months
Infections and infestations
Bacteraemia
0.50%
1/200 • Number of events 1 • Enrollment- 9 months
0.00%
0/208 • Enrollment- 9 months
Infections and infestations
Bronchiolitis
0.00%
0/200 • Enrollment- 9 months
0.48%
1/208 • Number of events 1 • Enrollment- 9 months
Infections and infestations
Cellulitis
0.00%
0/200 • Enrollment- 9 months
0.48%
1/208 • Number of events 1 • Enrollment- 9 months
Infections and infestations
Covid-19
0.50%
1/200 • Number of events 1 • Enrollment- 9 months
0.00%
0/208 • Enrollment- 9 months
Infections and infestations
Endocarditis
0.50%
1/200 • Number of events 1 • Enrollment- 9 months
0.00%
0/208 • Enrollment- 9 months
Infections and infestations
Endocarditis Enterococcal
0.50%
1/200 • Number of events 1 • Enrollment- 9 months
0.00%
0/208 • Enrollment- 9 months
Infections and infestations
Enterococcal Bacteraemia
0.50%
1/200 • Number of events 1 • Enrollment- 9 months
0.00%
0/208 • Enrollment- 9 months
Infections and infestations
Escherichia Infection
0.50%
1/200 • Number of events 1 • Enrollment- 9 months
0.00%
0/208 • Enrollment- 9 months
Infections and infestations
Implant Site Infection
0.50%
1/200 • Number of events 1 • Enrollment- 9 months
0.00%
0/208 • Enrollment- 9 months
Infections and infestations
Parotitis
0.50%
1/200 • Number of events 1 • Enrollment- 9 months
0.00%
0/208 • Enrollment- 9 months
Infections and infestations
Pneumonia
1.0%
2/200 • Number of events 3 • Enrollment- 9 months
0.96%
2/208 • Number of events 2 • Enrollment- 9 months
Infections and infestations
Pneumonia Escherichia
0.00%
0/200 • Enrollment- 9 months
0.48%
1/208 • Number of events 1 • Enrollment- 9 months
Infections and infestations
Sepsis
1.5%
3/200 • Number of events 3 • Enrollment- 9 months
0.48%
1/208 • Number of events 1 • Enrollment- 9 months
Infections and infestations
Septic Shock
0.50%
1/200 • Number of events 1 • Enrollment- 9 months
0.96%
2/208 • Number of events 4 • Enrollment- 9 months
Infections and infestations
Urinary Tract Infection
0.50%
1/200 • Number of events 1 • Enrollment- 9 months
0.48%
1/208 • Number of events 1 • Enrollment- 9 months
Injury, poisoning and procedural complications
Head Injury
0.00%
0/200 • Enrollment- 9 months
0.48%
1/208 • Number of events 1 • Enrollment- 9 months
Injury, poisoning and procedural complications
Ligament Sprain
0.50%
1/200 • Number of events 1 • Enrollment- 9 months
0.00%
0/208 • Enrollment- 9 months
Injury, poisoning and procedural complications
Lumbar Vertebral Fracture
0.00%
0/200 • Enrollment- 9 months
0.48%
1/208 • Number of events 1 • Enrollment- 9 months
Injury, poisoning and procedural complications
Seroma
0.50%
1/200 • Number of events 1 • Enrollment- 9 months
0.00%
0/208 • Enrollment- 9 months
Injury, poisoning and procedural complications
Skin Laceration
0.00%
0/200 • Enrollment- 9 months
0.48%
1/208 • Number of events 1 • Enrollment- 9 months
Injury, poisoning and procedural complications
Tibia Fracture
0.00%
0/200 • Enrollment- 9 months
0.48%
1/208 • Number of events 1 • Enrollment- 9 months
Investigations
Liver Function Test Increased
0.50%
1/200 • Number of events 1 • Enrollment- 9 months
0.00%
0/208 • Enrollment- 9 months
Metabolism and nutrition disorders
Calciphylaxis
0.50%
1/200 • Number of events 1 • Enrollment- 9 months
0.00%
0/208 • Enrollment- 9 months
Metabolism and nutrition disorders
Failure To Thrive
0.50%
1/200 • Number of events 1 • Enrollment- 9 months
0.00%
0/208 • Enrollment- 9 months
Metabolism and nutrition disorders
Gout
0.50%
1/200 • Number of events 1 • Enrollment- 9 months
0.00%
0/208 • Enrollment- 9 months
Metabolism and nutrition disorders
Hyperglycaemic Hyperosmolar Nonketotic Syndrome
0.00%
0/200 • Enrollment- 9 months
0.48%
1/208 • Number of events 1 • Enrollment- 9 months
Metabolism and nutrition disorders
Hyperkalaemia
1.0%
2/200 • Number of events 2 • Enrollment- 9 months
0.48%
1/208 • Number of events 2 • Enrollment- 9 months
Metabolism and nutrition disorders
Hyponatraemia
0.50%
1/200 • Number of events 1 • Enrollment- 9 months
0.00%
0/208 • Enrollment- 9 months
Musculoskeletal and connective tissue disorders
Back Pain
0.00%
0/200 • Enrollment- 9 months
0.48%
1/208 • Number of events 1 • Enrollment- 9 months
Musculoskeletal and connective tissue disorders
Chest Wall Haematoma
0.00%
0/200 • Enrollment- 9 months
0.48%
1/208 • Number of events 1 • Enrollment- 9 months
Musculoskeletal and connective tissue disorders
Intervertebral Disc Degeneration
0.50%
1/200 • Number of events 1 • Enrollment- 9 months
0.00%
0/208 • Enrollment- 9 months
Musculoskeletal and connective tissue disorders
Musculoskeletal Pain
0.50%
1/200 • Number of events 1 • Enrollment- 9 months
0.00%
0/208 • Enrollment- 9 months
Musculoskeletal and connective tissue disorders
Neuropathic Arthropathy
0.00%
0/200 • Enrollment- 9 months
0.48%
1/208 • Number of events 1 • Enrollment- 9 months
Neoplasms benign, malignant and unspecified (incl cysts and polyps)
Haemangioma
0.50%
1/200 • Number of events 1 • Enrollment- 9 months
0.00%
0/208 • Enrollment- 9 months
Neoplasms benign, malignant and unspecified (incl cysts and polyps)
Metastases To Central Nervous System
0.00%
0/200 • Enrollment- 9 months
0.48%
1/208 • Number of events 1 • Enrollment- 9 months
Neoplasms benign, malignant and unspecified (incl cysts and polyps)
Metastases To Peritoneum
0.50%
1/200 • Number of events 1 • Enrollment- 9 months
0.00%
0/208 • Enrollment- 9 months
Nervous system disorders
Cauda Equina Syndrome
0.00%
0/200 • Enrollment- 9 months
0.48%
1/208 • Number of events 1 • Enrollment- 9 months
Nervous system disorders
Cerebrovascular Accident
1.0%
2/200 • Number of events 2 • Enrollment- 9 months
0.48%
1/208 • Number of events 1 • Enrollment- 9 months
Nervous system disorders
Metabolic Encephalopathy
0.50%
1/200 • Number of events 1 • Enrollment- 9 months
0.00%
0/208 • Enrollment- 9 months
Nervous system disorders
Presyncope
0.50%
1/200 • Number of events 1 • Enrollment- 9 months
0.00%
0/208 • Enrollment- 9 months
Nervous system disorders
Syncope
0.00%
0/200 • Enrollment- 9 months
0.96%
2/208 • Number of events 2 • Enrollment- 9 months
Product Issues
Device Lead Damage
0.50%
1/200 • Number of events 1 • Enrollment- 9 months
0.00%
0/208 • Enrollment- 9 months
Product Issues
Lead Dislodgement
2.0%
4/200 • Number of events 4 • Enrollment- 9 months
2.9%
6/208 • Number of events 6 • Enrollment- 9 months
Renal and urinary disorders
Acute Kidney Injury
1.0%
2/200 • Number of events 2 • Enrollment- 9 months
0.48%
1/208 • Number of events 1 • Enrollment- 9 months
Renal and urinary disorders
Chronic Kidney Disease
0.50%
1/200 • Number of events 1 • Enrollment- 9 months
0.48%
1/208 • Number of events 1 • Enrollment- 9 months
Renal and urinary disorders
End Stage Renal Disease
1.0%
2/200 • Number of events 3 • Enrollment- 9 months
0.48%
1/208 • Number of events 1 • Enrollment- 9 months
Renal and urinary disorders
Renal Impairment
0.50%
1/200 • Number of events 1 • Enrollment- 9 months
0.00%
0/208 • Enrollment- 9 months
Respiratory, thoracic and mediastinal disorders
Acute Pulmonary Oedema
0.50%
1/200 • Number of events 1 • Enrollment- 9 months
0.00%
0/208 • Enrollment- 9 months
Respiratory, thoracic and mediastinal disorders
Acute Respiratory Failure
1.5%
3/200 • Number of events 3 • Enrollment- 9 months
0.48%
1/208 • Number of events 1 • Enrollment- 9 months
Respiratory, thoracic and mediastinal disorders
Bronchiectasis
0.00%
0/200 • Enrollment- 9 months
0.48%
1/208 • Number of events 1 • Enrollment- 9 months
Respiratory, thoracic and mediastinal disorders
Dyspnoea
0.50%
1/200 • Number of events 1 • Enrollment- 9 months
0.00%
0/208 • Enrollment- 9 months
Respiratory, thoracic and mediastinal disorders
Hypoxia
0.50%
1/200 • Number of events 1 • Enrollment- 9 months
0.00%
0/208 • Enrollment- 9 months
Respiratory, thoracic and mediastinal disorders
Pleural Effusion
0.50%
1/200 • Number of events 1 • Enrollment- 9 months
0.48%
1/208 • Number of events 1 • Enrollment- 9 months
Respiratory, thoracic and mediastinal disorders
Pneumothorax
1.0%
2/200 • Number of events 2 • Enrollment- 9 months
0.48%
1/208 • Number of events 1 • Enrollment- 9 months
Respiratory, thoracic and mediastinal disorders
Pulmonary Embolism
0.50%
1/200 • Number of events 1 • Enrollment- 9 months
0.00%
0/208 • Enrollment- 9 months
Respiratory, thoracic and mediastinal disorders
Respiratory Failure
1.0%
2/200 • Number of events 2 • Enrollment- 9 months
0.96%
2/208 • Number of events 2 • Enrollment- 9 months
Skin and subcutaneous tissue disorders
Rash
0.50%
1/200 • Number of events 1 • Enrollment- 9 months
0.00%
0/208 • Enrollment- 9 months
Vascular disorders
Aortic Aneurysm
0.50%
1/200 • Number of events 1 • Enrollment- 9 months
0.00%
0/208 • Enrollment- 9 months
Vascular disorders
Deep Vein Thrombosis
0.50%
1/200 • Number of events 1 • Enrollment- 9 months
0.48%
1/208 • Number of events 1 • Enrollment- 9 months
Vascular disorders
Intermittent Claudication
0.50%
1/200 • Number of events 1 • Enrollment- 9 months
0.00%
0/208 • Enrollment- 9 months
Vascular disorders
Peripheral Arterial Occlusive Disease
0.50%
1/200 • Number of events 1 • Enrollment- 9 months
0.00%
0/208 • Enrollment- 9 months
Vascular disorders
Peripheral Vascular Disorder
0.50%
1/200 • Number of events 2 • Enrollment- 9 months
0.00%
0/208 • Enrollment- 9 months
Vascular disorders
Shock Haemorrhagic
0.50%
1/200 • Number of events 1 • Enrollment- 9 months
0.00%
0/208 • Enrollment- 9 months

Other adverse events

Adverse event data not reported

Additional Information

CRM Clinical

Medtronic CRM Clincial Research

Phone: 800-328-2518

Results disclosure agreements

  • Principal investigator is a sponsor employee Site will not independently publish, publicly disclose, present or discuss any results of or information pertaining to the study until a multi-center publication is released; provide however that if a multi-center publication is not released within 1 year after completion of the study at all sites involved in the study, Study Site will have the right to publish the results of, and information pertaining to , their activities conducted under their CTA, in accordance with provision of CTA.
  • Publication restrictions are in place

Restriction type: OTHER