Chronicle Offers Management to Patients With Advanced Signs and Symptoms of Heart Failure (COMPASS-HF)

Sponsor
Medtronic Cardiac Rhythm and Heart Failure (Industry)
Overall Status
Completed
CT.gov ID
NCT00643279
Collaborator
(none)
277
28
2
121
9.9
0.1

Study Details

Study Description

Brief Summary

COMPASS-HF was a prospective, two-arm, randomized (1:1), multi-center, parallel controlled study. The purpose of the randomized study was to test the safety of an implantable hemodynamic monitor (IHM) and pressure sensor lead. The premise of this study was to compare the effectiveness of a novel heart failure management strategy based on information obtained from the IHM system in reducing heart failure morbidity compared to a strategy based on standard medical care alone.

Condition or Disease Intervention/Treatment Phase
  • Device: Chronicle Implantable Hemodynamic Monitor
  • Other: Standard of Care
N/A

Detailed Description

COMPASS-HF was a prospective, two-arm, randomized (1:1), multi-center, parallel controlled study. The purpose of the randomized study was to test the safety of an implantable hemodynamic monitor (IHM) and pressure sensor lead. The premise of this study was to compare the effectiveness of a novel heart failure management strategy based on information obtained from the IHM system in reducing heart failure morbidity compared to a strategy based on standard medical care alone.

After baseline evaluation and verification that entrance criteria were met, all subjects were implanted with a Chronicle IHM and pressure sensor lead. Following successful implantation, subjects were randomized to either the CHRONICLE group or CONTROL group. Subjects randomized to the CHRONICLE group were managed using Chronicle, specifically trended RV and estimated PA pressure, heart rate and activity data, whereas subjects randomized to the CONTROL group were treated conventionally without the use of the Chronicle data. In the case that implantation was not successful, subjects were exited from the study if no procedure related adverse events were identified; procedure related adverse events were followed through to resolution before the subject were withdrawn from the study.

Subjects remained randomized until their six month clinic visit had been completed. Following the subject's six month visit, clinicians were granted access to the CONTROL subject's trended Chronicle data on the Chronicle website, and subjects were seen in the clinic for a protocol-required visit every six months until exit from the study.

Study Design

Study Type:
Interventional
Actual Enrollment :
277 participants
Allocation:
Randomized
Intervention Model:
Parallel Assignment
Masking:
Single (Participant)
Primary Purpose:
Diagnostic
Official Title:
Chronicle Offers Management to Patients With Advanced Signs and Symptoms of Heart Failure (COMPASS-HF)
Study Start Date :
Mar 1, 2003
Actual Primary Completion Date :
Jun 1, 2005
Actual Study Completion Date :
Apr 1, 2013

Arms and Interventions

Arm Intervention/Treatment
Experimental: CHRONICLE

Subjects randomized to the CHRONICLE group were managed using data from an implantable hemodynamic monitoring (IHM) device, including trended right ventricular (RV) and estimated pulmonary arterial (PA) pressures, heart rate and activity data. The Chronicle IHM device does not provide therapy, but rather provides intracardiac diagnostic information about the patient which the physician can utilize to manage the patient and the patients heart failure.

Device: Chronicle Implantable Hemodynamic Monitor
Surgical implantation of chronic ambulatory implantable hemodynamic monitoring (IHM) device and intracardiac pressure sensing lead. The implantable hemodynamic monitoring device captures intracardiac hemodynamic information about the patient including trended right ventricular (RV) and estimated pulmonary arterial (PA) pressures, heart rate and activity data. The IHM device does not provide therapy, but rather provides intracardiac diagnostic information about the patient which the physician can utilize to manage the patient and the patients heart failure.

Placebo Comparator: CONTROL

Subjects randomized to the CONTROL group implanted with the Chronicle implantable hemodynamic monitoring (IHM) device, but the intracardiac diagnostic information was blinded to both the patient and the physician during the randomized period of the study. Subjects were managed conventionally with standard of care. Physicians and patients have access to the intracardiac data after the randomized period of the study is over, at 6 months.

Other: Standard of Care
Surgical implantation of chronic ambulatory implantable hemodynamic monitoring (IHM) device and intracardiac pressure sensing lead, but physician and patient access to the intracardiac information provided by the device is restricted until the end of the randomized period of the study, at 6 months. Patients and patients heart failure are managed conventionally per standard of care.

Outcome Measures

Primary Outcome Measures

  1. Safety as Measured by the Percentage of Participants Free From System Related Complications Through 6 Months. [Within 6 months post-implant]

    A Chronicle IHM system-related complication was defined as any system-related adverse event that occurred during the clinical investigation which is (1) treated with invasive means (including intravenous drug therapy), (2) results in death, (3) results in the explant of any Chronicle IHM component, and/or (4) causes permanent loss of significant function of the implanted system. Safety is defined as ≥ 80% of participants experiencing freedom from device related complications through 6 months.

  2. Safety as Measured by the Percentage of Participants Free From Implantable Hemodynamic Monitor Pressure Related Sensor Lead Failures Through 6 Months. [Within 6 months post-implant]

    A pressure sensor failure was defined as a recognizable, abrupt, non-physiologic shift in pressure parameters. Safety is defined as ≥ 90% of participants free from pressure sensor lead failure through 6 months.

  3. Rate of Heart Failure-related Hospital Equivalents. [6 Months post-implant]

    Hospital equivalents (HE) were defined to include the following events: Heart failure-related hospital admissions for 24 hours or longer Heart failure-related emergency department visits and necessitates invasive treatment (e.g. IV diuretic administration). Heart failure-related urgent visits and necessitates invasive treatment (e.g. IV diuretic administration).

Secondary Outcome Measures

  1. Health Care Utilization [6 Months post-implant]

    Characterize total health care utilization, the total number of all-cause hospitalization, emergency department, and urgent care visits.

  2. Days Hospitalization Free [6 Months post-implant]

    The number of days alive outside the hospital was calculated as the number of days of randomized follow-up minus the number of days hospitalized during the randomized follow-up period.

  3. Clinical Composite Response of Either "Worsened", "Improved", or "Unchanged" [6 Months post-implant]

    Worsened, Improved and Unchanged were defined as follows: Worsened: Patient died, hospitalized for worsening heart failure, worsened NYHA Class Improved: Patient improved in NYHA Class Unchanged: Patient was neither improved nor worsened.

  4. Quality of Life Measured by the Minnesota Living With Heart Failure Questionnaire [6 Months post-implant]

    Quality of life was measured by the Minnesota Living with Heart Failure (MLHF), a questionnaire with 21 questions and scored on a scale from 0 (good quality of life) to 105 (low quality of life). Change in quality of life is defined as change from baseline to month 6. A participant must have completed a quality of life survey at the baseline visit and month 6 visit to be included in the analysis.

  5. New York Heart Association (NYHA) Class [6 Months post-implant]

    New York Heart Association (NYHA) Classifications were defined as follows: Class I - Patients with cardiac disease but without resulting limitation of physical activity. Ordinary physical activity does not cause undue fatigue, palpitation, dyspnea, or angina. Class II - Patients with cardiac disease resulting in slight limitation of physical activity. They are comfortable at rest. Ordinary physical activity results in fatigue, palpitation, dyspnea, or angina. Class III - Patients with cardiac disease resulting in marked limitation of physical activity. They are comfortable at rest. Less than ordinary activity causes fatigue, palpitation, dyspnea, or angina. Class IV - Patients with cardiac disease resulting in inability to carry on any physical activity without discomfort. Symptoms of heart failure or the anginal syndrome may be present even at rest. If any physical activity is undertaken, discomfort is increased.

  6. Distance Walked During a Six Minute Hall Walk [6 Months post-implant]

    Patients completed six minute hall walk at baseline and 6 months. Outcome is change in hall walk distance from baseline to 6 months.

Eligibility Criteria

Criteria

Ages Eligible for Study:
18 Years and Older
Sexes Eligible for Study:
All
Accepts Healthy Volunteers:
No
Inclusion Criteria:
  • Subjects with heart failure classified as New York Heart Association (NYHA) Class III and IV

  • Subject has been managed with standard medical therapy for heart failure (such as diuretic, angiotensin-converting enzyme (ACE) inhibitor or angiotensin receptor blockers (ARB), and beta-blocker for at least 3 months prior to the baseline evaluation

  • Subject must have at least one heart failure-related hospitalization or emergency department visit requiring intravenous treatment within 6 months prior to baseline evaluation

Exclusion Criteria:
  • Subjects who are likely to be transplanted within 6 months from randomization or will remain hospitalized until transplantation

  • Subjects with severe COPD or restrictive airway disease (recommended FEV1 less than or equal to 1 liter or 50% predicted)

  • Subjects who are on continuous positive inotropic therapy

  • Subjects with known atrial or ventricular septal defects

  • Subjects with mechanical right heart valves

  • Subjects with stenotic tricuspid or pulmonary valves

  • Subjects with a presently implanted non-compatible pacemaker or ICD

  • Subjects with cardiac resynchronization therapy which has not achieved optimal programming for more than 3 months

  • Subjects with a major cardiovascular event within 3 months prior to baseline evaluation

  • Subjects with a severe non-cardiac condition limiting 6 month survival

  • Subjects with a primary diagnosis of pulmonary artery hypertension

  • Subjects with serum creatinine greater than or equal to 3.5 mg/dL or on chronic renal dialysis

  • Subjects enrolled in concurrent studies that may confound the results of this study

  • Women who are pregnant or with child bearing potential and who are not on a reliable form of birth control

Contacts and Locations

Locations

Site City State Country Postal Code
1 University of Alabama at Birmingham Birmingham Alabama United States
2 Loma Linda University Medical Center Loma Linda California United States
3 UCLA Medical Center Los Angeles California United States
4 University of Southern California Los Angeles California United States
5 University of Florida - Shands Gainesville Florida United States
6 Crawford LongHospital Atlanta Georgia United States
7 Prairie Heart Institute Springfield Illinois United States
8 Parkview Memorial Hospital Fort Wayne Indiana United States
9 New England Medical Center Boston Massachusetts United States
10 St. Paul Heart Saint Paul Minnesota United States
11 Mid America Heart Institute Kansas City Missouri United States
12 Robert Wood Johnson Medical Center New Brunswick New Jersey United States
13 Newark Beth Israel Newark New Jersey United States
14 New York Presbyterian - Columbia New York New York United States
15 Duke University Chapel Hill North Carolina United States
16 University of Cincinnati Cincinnati Ohio United States
17 The Ohio State University Columbus Ohio United States
18 Oklahoma Cardiovascular Associates Oklahoma City Oklahoma United States
19 University of Oklahoma Oklahoma City Oklahoma United States
20 Hospital of the University of Pennsylvania Philadelphia Pennsylvania United States
21 Temple University Hospital Philadelphia Pennsylvania United States
22 University of Pittsburgh Pittsburgh Pennsylvania United States
23 Medical University of South Carolina Charleston South Carolina United States
24 Baptist Memorial Hospital Germantown Tennessee United States
25 St. Thomas Hospital Nashville Tennessee United States
26 St. Luke's Episcopal Hospital/Texas Heart Houston Texas United States
27 LDS Hospital Salt Lake City Utah United States
28 University of Washington Medical Center Seattle Washington United States

Sponsors and Collaborators

  • Medtronic Cardiac Rhythm and Heart Failure

Investigators

  • Principal Investigator: Robert Bourge, MD, The University of Alabama at Birmingham

Study Documents (Full-Text)

None provided.

More Information

Publications

None provided.
Responsible Party:
Medtronic Cardiac Rhythm and Heart Failure
ClinicalTrials.gov Identifier:
NCT00643279
Other Study ID Numbers:
  • COMPASS-HF
First Posted:
Mar 26, 2008
Last Update Posted:
Sep 16, 2019
Last Verified:
Aug 1, 2019
Keywords provided by Medtronic Cardiac Rhythm and Heart Failure
Additional relevant MeSH terms:

Study Results

Participant Flow

Recruitment Details Recruitment began on March 13, 2003 and ended on November 16, 2004. All subjects were exited from the study on April 8, 2013. Twenty-nine US clinical centers participated in the COMPASS-HF study.
Pre-assignment Detail Subjects were required to have a successful implant of the Chronicle® device prior to randomization. 277 subjects had an attempted implant, with 274 successfully implanted and randomized. 3 subjects had unsuccessful implant attempts and were exited prior to randomization.
Arm/Group Title Treatment Control
Arm/Group Description Physicians have access to device-based hemodynamic monitor information to guide patient management Physicians do not have access to device-based hemodynamic monitor information to guide patient management
Period Title: Overall Study
STARTED 134 140
COMPLETED 118 127
NOT COMPLETED 16 13

Baseline Characteristics

Arm/Group Title Treatment Control Total
Arm/Group Description Physicians have access to device-based hemodynamic monitor information to guide patient management Physicians do not have access to device-based hemodynamic monitor information to guide patient management Total of all reporting groups
Overall Participants 134 140 274
Age (years) [Mean (Standard Deviation) ]
Mean (Standard Deviation) [years]
58
(14)
58
(13)
58
(14)
Sex: Female, Male (Count of Participants)
Female
59
44%
50
35.7%
109
39.8%
Male
75
56%
90
64.3%
165
60.2%
Region of Enrollment (participants) [Number]
United States
134
100%
140
100%
274
100%
New York Heart Association Class III (NYHA III) (Count of Participants)
Count of Participants [Participants]
112
83.6%
122
87.1%
234
85.4%
New York Heart Association Class IV (NYHA IV) (Count of Participants)
Count of Participants [Participants]
22
16.4%
18
12.9%
40
14.6%

Outcome Measures

1. Primary Outcome
Title Safety as Measured by the Percentage of Participants Free From System Related Complications Through 6 Months.
Description A Chronicle IHM system-related complication was defined as any system-related adverse event that occurred during the clinical investigation which is (1) treated with invasive means (including intravenous drug therapy), (2) results in death, (3) results in the explant of any Chronicle IHM component, and/or (4) causes permanent loss of significant function of the implanted system. Safety is defined as ≥ 80% of participants experiencing freedom from device related complications through 6 months.
Time Frame Within 6 months post-implant

Outcome Measure Data

Analysis Population Description
The analysis population for safety includes all subjects with an attempted implant of the Chronicle implantable hemodynamic monitoring device, including both successful implanted participants (274) and unsuccessful implanted participants (3). In total 277 participants were assessed for the safety objective.
Arm/Group Title All Subjects With Attempted Implant
Arm/Group Description All subjects with an attempted implant of a Chronicle IHM.
Measure Participants 277
Count of Participants [Participants]
277
206.7%
Statistical Analysis 1
Statistical Analysis Overview Comparison Group Selection All Subjects With Attempted Implant
Comments
Type of Statistical Test Superiority
Comments Survival estimate at 6-months
Statistical Test of Hypothesis p-Value
Comments
Method
Comments
Method of Estimation Estimation Parameter 6-month survival rate
Estimated Value 91.5
Confidence Interval (1-Sided) 95%
88.7 to
Parameter Dispersion Type:
Value:
Estimation Comments
2. Primary Outcome
Title Safety as Measured by the Percentage of Participants Free From Implantable Hemodynamic Monitor Pressure Related Sensor Lead Failures Through 6 Months.
Description A pressure sensor failure was defined as a recognizable, abrupt, non-physiologic shift in pressure parameters. Safety is defined as ≥ 90% of participants free from pressure sensor lead failure through 6 months.
Time Frame Within 6 months post-implant

Outcome Measure Data

Analysis Population Description
[Not Specified]
Arm/Group Title All Subjects Successfully Implanted
Arm/Group Description All subjects successfully implanted with a Chronicle IHM system
Measure Participants 274
Count of Participants [Participants]
274
204.5%
Statistical Analysis 1
Statistical Analysis Overview Comparison Group Selection All Subjects With Attempted Implant
Comments
Type of Statistical Test Superiority
Comments Survival estimate at 6-months
Statistical Test of Hypothesis p-Value
Comments
Method
Comments
Method of Estimation Estimation Parameter 6-month survival rate
Estimated Value 100
Confidence Interval (1-Sided) 95%
98.9 to
Parameter Dispersion Type:
Value:
Estimation Comments
3. Primary Outcome
Title Rate of Heart Failure-related Hospital Equivalents.
Description Hospital equivalents (HE) were defined to include the following events: Heart failure-related hospital admissions for 24 hours or longer Heart failure-related emergency department visits and necessitates invasive treatment (e.g. IV diuretic administration). Heart failure-related urgent visits and necessitates invasive treatment (e.g. IV diuretic administration).
Time Frame 6 Months post-implant

Outcome Measure Data

Analysis Population Description
All randomized subjects
Arm/Group Title Treatment Control
Arm/Group Description Physicians have access to device-based hemodynamic monitor information to guide patient management Physicians do not have access to device-based hemodynamic monitor information to guide patient management
Measure Participants 134 140
Mean (95% Confidence Interval) [Events]
0.63
0.81
4. Secondary Outcome
Title Health Care Utilization
Description Characterize total health care utilization, the total number of all-cause hospitalization, emergency department, and urgent care visits.
Time Frame 6 Months post-implant

Outcome Measure Data

Analysis Population Description
All randomized subjects
Arm/Group Title Treatment Control
Arm/Group Description Physicians have access to device-based hemodynamic monitor information to guide patient management Physicians do not have access to device-based hemodynamic monitor information to guide patient management
Measure Participants 134 140
Number [Total number of events]
218
255
5. Secondary Outcome
Title Days Hospitalization Free
Description The number of days alive outside the hospital was calculated as the number of days of randomized follow-up minus the number of days hospitalized during the randomized follow-up period.
Time Frame 6 Months post-implant

Outcome Measure Data

Analysis Population Description
All randomized subjects
Arm/Group Title Treatment Control
Arm/Group Description Physicians have access to device-based hemodynamic monitor information to guide patient management Physicians do not have access to device-based hemodynamic monitor information to guide patient management
Measure Participants 134 140
Mean (95% Confidence Interval) [Days]
170.8
172.7
6. Secondary Outcome
Title Clinical Composite Response of Either "Worsened", "Improved", or "Unchanged"
Description Worsened, Improved and Unchanged were defined as follows: Worsened: Patient died, hospitalized for worsening heart failure, worsened NYHA Class Improved: Patient improved in NYHA Class Unchanged: Patient was neither improved nor worsened.
Time Frame 6 Months post-implant

Outcome Measure Data

Analysis Population Description
All randomized subjects
Arm/Group Title Treatment Control
Arm/Group Description Physicians have access to device-based hemodynamic monitor information to guide patient management Physicians do not have access to device-based hemodynamic monitor information to guide patient management
Measure Participants 134 140
Improved
56
41.8%
48
34.3%
Worsend
50
37.3%
66
47.1%
Unchanged
28
20.9%
26
18.6%
7. Secondary Outcome
Title Quality of Life Measured by the Minnesota Living With Heart Failure Questionnaire
Description Quality of life was measured by the Minnesota Living with Heart Failure (MLHF), a questionnaire with 21 questions and scored on a scale from 0 (good quality of life) to 105 (low quality of life). Change in quality of life is defined as change from baseline to month 6. A participant must have completed a quality of life survey at the baseline visit and month 6 visit to be included in the analysis.
Time Frame 6 Months post-implant

Outcome Measure Data

Analysis Population Description
All randomized subjects completing a quality of life survey at the baseline visit and month 6 visit
Arm/Group Title Treatment Control
Arm/Group Description Physicians have access to device-based hemodynamic monitor information to guide patient management Physicians do not have access to device-based hemodynamic monitor information to guide patient management
Measure Participants 117 127
Mean (Full Range) [Index score]
-12.5
-8.5
8. Secondary Outcome
Title New York Heart Association (NYHA) Class
Description New York Heart Association (NYHA) Classifications were defined as follows: Class I - Patients with cardiac disease but without resulting limitation of physical activity. Ordinary physical activity does not cause undue fatigue, palpitation, dyspnea, or angina. Class II - Patients with cardiac disease resulting in slight limitation of physical activity. They are comfortable at rest. Ordinary physical activity results in fatigue, palpitation, dyspnea, or angina. Class III - Patients with cardiac disease resulting in marked limitation of physical activity. They are comfortable at rest. Less than ordinary activity causes fatigue, palpitation, dyspnea, or angina. Class IV - Patients with cardiac disease resulting in inability to carry on any physical activity without discomfort. Symptoms of heart failure or the anginal syndrome may be present even at rest. If any physical activity is undertaken, discomfort is increased.
Time Frame 6 Months post-implant

Outcome Measure Data

Analysis Population Description
All randomized subjects with NYHA assessment completed at baseline and at 6 months were included in the analysis
Arm/Group Title Treatment Control
Arm/Group Description Physicians have access to device-based hemodynamic monitor information to guide patient management Physicians do not have access to device-based hemodynamic monitor information to guide patient management
Measure Participants 113 122
NYHA I
7
5.2%
11
7.9%
NYHA II
39
29.1%
31
22.1%
NYHA III
61
45.5%
70
50%
NYHA IV
6
4.5%
10
7.1%
9. Secondary Outcome
Title Distance Walked During a Six Minute Hall Walk
Description Patients completed six minute hall walk at baseline and 6 months. Outcome is change in hall walk distance from baseline to 6 months.
Time Frame 6 Months post-implant

Outcome Measure Data

Analysis Population Description
All randomized patients completing a hall walk at baseline and 6 months.
Arm/Group Title Treatment Control
Arm/Group Description Physicians have access to device-based hemodynamic monitor information to guide patient management Physicians do not have access to device-based hemodynamic monitor information to guide patient management
Measure Participants 112 115
Mean (Standard Deviation) [Meters]
6.2
(98.8)
-8.2
(114.2)

Adverse Events

Time Frame 6 months
Adverse Event Reporting Description
Arm/Group Title Treatment Control
Arm/Group Description Physicians have access to device-based hemodynamic monitor information to guide patient management Physicians do not have access to device-based hemodynamic monitor information to guide patient management
All Cause Mortality
Treatment Control
Affected / at Risk (%) # Events Affected / at Risk (%) # Events
Total 13/134 (9.7%) 11/140 (7.9%)
Serious Adverse Events
Treatment Control
Affected / at Risk (%) # Events Affected / at Risk (%) # Events
Total 79/134 (59%) 91/140 (65%)
Blood and lymphatic system disorders
Lab value abnormalities 3/134 (2.2%) 3 0/140 (0%) 0
Anemia 1/134 (0.7%) 1 0/140 (0%) 0
Cardiac disorders
Decompensation of heart failure 35/134 (26.1%) 57 43/140 (30.7%) 68
Volume overload 6/134 (4.5%) 10 16/140 (11.4%) 26
Volume depletion/dehydration 6/134 (4.5%) 6 5/140 (3.6%) 6
Angina pectoris 8/134 (6%) 8 1/140 (0.7%) 1
Cardiovascular procedure 4/134 (3%) 4 5/140 (3.6%) 6
Hypotension 1/134 (0.7%) 1 4/140 (2.9%) 4
Non-specific chest 3/134 (2.2%) 4 4/140 (2.9%) 4
Non sustained VT 1/134 (0.7%) 1 3/140 (2.1%) 3
Sustained VT 1/134 (0.7%) 1 3/140 (2.1%) 3
Acute MI/Cardiac Arrest 3/134 (2.2%) 3 3/140 (2.1%) 3
Atrial tachycardia 0/134 (0%) 0 1/140 (0.7%) 1
Paroxysmal atrial flutter/fibrillation 3/134 (2.2%) 4 1/140 (0.7%) 1
Persistent atrial flutter/fibrillation 1/134 (0.7%) 1 1/140 (0.7%) 1
Ventricular fibrillation/flutter 2/134 (1.5%) 2 2/140 (1.4%) 2
Hypertension 1/134 (0.7%) 1 2/140 (1.4%) 2
Electro Mechanical Dis-association 0/134 (0%) 0 1/140 (0.7%) 1
Sudden Cardiac Death 1/134 (0.7%) 1 1/140 (0.7%) 1
Edema/weight gain 1/134 (0.7%) 1 0/140 (0%) 0
Cardiac Transplant 1/134 (0.7%) 1 0/140 (0%) 0
Coronary Artery 1/134 (0.7%) 1 0/140 (0%) 0
Endocrine disorders
Hyponatremia 0/134 (0%) 0 1/140 (0.7%) 1
Hypokalemia 0/134 (0%) 0 2/140 (1.4%) 2
Gastrointestinal disorders
Ascites 0/134 (0%) 0 1/140 (0.7%) 1
General disorders
Urinary Tract Infection 1/134 (0.7%) 1 0/140 (0%) 0
Allergic Reaction 1/134 (0.7%) 1 0/140 (0%) 0
Infections and infestations
MRSA Infection 1/134 (0.7%) 1 0/140 (0%) 0
Sepsis 1/134 (0.7%) 1 0/140 (0%) 0
Injury, poisoning and procedural complications
Inhalant Poisoning from Cleaning Agents 0/134 (0%) 0 1/140 (0.7%) 1
Nervous system disorders
Stroke 1/134 (0.7%) 1 1/140 (0.7%) 1
Psychiatric disorders
Change in mental status 1/134 (0.7%) 2 0/140 (0%) 0
Renal and urinary disorders
Renal insufficiencies/failure 2/134 (1.5%) 2 1/140 (0.7%) 1
Respiratory, thoracic and mediastinal disorders
Pneumonia 1/134 (0.7%) 1 1/140 (0.7%) 1
Dyspnea/SOB 2/134 (1.5%) 2 0/140 (0%) 0
Worsening COPD 1/134 (0.7%) 1 0/140 (0%) 0
Pulmonary edema 1/134 (0.7%) 1 0/140 (0%) 0
Pleural effusion 1/134 (0.7%) 1 0/140 (0%) 0
Respiratory Failure/Arrest 1/134 (0.7%) 1 0/140 (0%) 0
Surgical and medical procedures
Elective Surgery 0/134 (0%) 0 1/140 (0.7%) 1
Vascular disorders
Peripheral Vascular Disease 1/134 (0.7%) 1 0/140 (0%) 0
Other (Not Including Serious) Adverse Events
Treatment Control
Affected / at Risk (%) # Events Affected / at Risk (%) # Events
Total 15/134 (11.2%) 17/140 (12.1%)
Cardiac disorders
Sustained VT 0/134 (0%) 0 2/140 (1.4%) 2
Hypotension 2/134 (1.5%) 2 0/140 (0%) 0
Decompensated Heart Failure 5/134 (3.7%) 6 5/140 (3.6%) 5
Angina 2/134 (1.5%) 3 1/140 (0.7%) 1
Volume depletion/dehydration 2/134 (1.5%) 2 3/140 (2.1%) 3
Volume overload 4/134 (3%) 4 6/140 (4.3%) 10

Limitations/Caveats

[Not Specified]

More Information

Certain Agreements

Principal Investigators are NOT employed by the organization sponsoring the study.

There is NOT an agreement between Principal Investigators and the Sponsor (or its agents) that restricts the PI's rights to discuss or publish trial results after the trial is completed.

Results Point of Contact

Name/Title Dana Wigert
Organization Medtronic
Phone 763-526-2802
Email dana.wigert@medtronic.com
Responsible Party:
Medtronic Cardiac Rhythm and Heart Failure
ClinicalTrials.gov Identifier:
NCT00643279
Other Study ID Numbers:
  • COMPASS-HF
First Posted:
Mar 26, 2008
Last Update Posted:
Sep 16, 2019
Last Verified:
Aug 1, 2019