Trial Outcomes & Findings for TactiCath Contact Force Ablation Catheter Study for Atrial Fibrillation (NCT NCT01278953)

NCT ID: NCT01278953

Last Updated: 2019-02-21

Results Overview

Includes both acute success (successful electrical isolation of all pulmonary veins) and chronic success. Re-treatment for AF with ablation or the use of Class I or Class III antiarrhythmic drugs after a 3 month blanking period constitute a treatment failure.

Recruitment status

COMPLETED

Study phase

NA

Target enrollment

300 participants

Primary outcome timeframe

12 months

Results posted on

2019-02-21

Participant Flow

300 subjects consented and were randomized, 5 subjects did not have the study device introduced. Thus 295 subjects contributed to study endpoints.

Participant milestones

Participant milestones
Measure
TactiCath
Ablation performed using the TactiCath contact force sensing catheter Catheter ablation for the treatment of paroxysmal atrial fibrillation: A pulmonary vein isolation procedure will be performed using radiofrequency ablation.
Control
Ablation performed using a catheter with no contact force sensing capability Catheter ablation for the treatment of paroxysmal atrial fibrillation: A pulmonary vein isolation procedure will be performed using radiofrequency ablation.
Overall Study
STARTED
155
145
Overall Study
COMPLETED
146
134
Overall Study
NOT COMPLETED
9
11

Reasons for withdrawal

Withdrawal data not reported

Baseline Characteristics

TactiCath Contact Force Ablation Catheter Study for Atrial Fibrillation

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
TactiCath
n=155 Participants
Ablation performed using the TactiCath contact force sensing catheter Catheter ablation for the treatment of paroxysmal atrial fibrillation: A pulmonary vein isolation procedure will be performed using radiofrequency ablation.
Control
n=145 Participants
Ablation performed using a catheter with no contact force sensing capability Catheter ablation for the treatment of paroxysmal atrial fibrillation: A pulmonary vein isolation procedure will be performed using radiofrequency ablation.
Total
n=300 Participants
Total of all reporting groups
Age, Continuous
59.6 years
STANDARD_DEVIATION 9.32 • n=5 Participants
61 years
STANDARD_DEVIATION 10.84 • n=7 Participants
60.3 years
STANDARD_DEVIATION 10.09 • n=5 Participants
Sex: Female, Male
Female
55 Participants
n=5 Participants
54 Participants
n=7 Participants
109 Participants
n=5 Participants
Sex: Female, Male
Male
100 Participants
n=5 Participants
91 Participants
n=7 Participants
191 Participants
n=5 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
Race (NIH/OMB)
Asian
1 Participants
n=5 Participants
0 Participants
n=7 Participants
1 Participants
n=5 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
Race (NIH/OMB)
Black or African American
1 Participants
n=5 Participants
0 Participants
n=7 Participants
1 Participants
n=5 Participants
Race (NIH/OMB)
White
148 Participants
n=5 Participants
141 Participants
n=7 Participants
289 Participants
n=5 Participants
Race (NIH/OMB)
More than one race
2 Participants
n=5 Participants
2 Participants
n=7 Participants
4 Participants
n=5 Participants
Race (NIH/OMB)
Unknown or Not Reported
3 Participants
n=5 Participants
2 Participants
n=7 Participants
5 Participants
n=5 Participants
Region of Enrollment
United States
96 participants
n=5 Participants
87 participants
n=7 Participants
183 participants
n=5 Participants
Region of Enrollment
Europe
59 participants
n=5 Participants
58 participants
n=7 Participants
117 participants
n=5 Participants

PRIMARY outcome

Timeframe: 12 months

Population: Primary effectiveness was calculated using the Per Protocol (PP) population (n=280). 10 subjects who had PVI attempted were excluded from the PP population.due to insufficient data. A medical panel (DSMB) blinded to treatment, adjudicated the exclusion of subjects from the analysis (n=3 from TactiCath; n=7 from Control)

Includes both acute success (successful electrical isolation of all pulmonary veins) and chronic success. Re-treatment for AF with ablation or the use of Class I or Class III antiarrhythmic drugs after a 3 month blanking period constitute a treatment failure.

Outcome measures

Outcome measures
Measure
TactiCath
n=146 Participants
Ablation performed using the TactiCath contact force sensing catheter Catheter ablation for the treatment of paroxysmal atrial fibrillation: A pulmonary vein isolation procedure will be performed using radiofrequency ablation.
Control
n=134 Participants
Ablation performed using a catheter with no contact force sensing capability Catheter ablation for the treatment of paroxysmal atrial fibrillation: A pulmonary vein isolation procedure will be performed using radiofrequency ablation.
Freedom From Recurrence of Symptomatic Atrial Fibrillation, Atrial Tachycardia or Atrial Flutter
99 participants
93 participants

PRIMARY outcome

Timeframe: 12 months

Population: The Safety analysis population excludes 5 subjects who signed consent and were randomized but were not exposed to the study procedure or the study device resulting in n=295 subjects. (n=3 excluded from TactiCath; n=2 excluded from the Control group)

Includes serious adverse events occurring within 7 days of the index procedure or hospital discharge, whichever is later, and diagnosed at any time during the follow-up period.

Outcome measures

Outcome measures
Measure
TactiCath
n=152 Participants
Ablation performed using the TactiCath contact force sensing catheter Catheter ablation for the treatment of paroxysmal atrial fibrillation: A pulmonary vein isolation procedure will be performed using radiofrequency ablation.
Control
n=143 Participants
Ablation performed using a catheter with no contact force sensing capability Catheter ablation for the treatment of paroxysmal atrial fibrillation: A pulmonary vein isolation procedure will be performed using radiofrequency ablation.
Incidence of Device-related Early-onset Primary Serious Adverse Events
3 participants
2 participants

Adverse Events

TactiCath

Serious events: 10 serious events
Other events: 70 other events
Deaths: 0 deaths

Control

Serious events: 11 serious events
Other events: 56 other events
Deaths: 0 deaths

Serious adverse events

Serious adverse events
Measure
TactiCath
n=152 participants at risk
Ablation performed using the TactiCath contact force sensing catheter Catheter ablation for the treatment of paroxysmal atrial fibrillation: A pulmonary vein isolation procedure will be performed using radiofrequency ablation.
Control
n=143 participants at risk
Ablation performed using a catheter with no contact force sensing capability Catheter ablation for the treatment of paroxysmal atrial fibrillation: A pulmonary vein isolation procedure will be performed using radiofrequency ablation.
Cardiac disorders
Cardiac perforation
0.66%
1/152 • Number of events 1 • 12 months
The Safety analysis population excludes 5 subjects who signed consent and were randomized but were not exposed to the study procedure or the study device resulting in n=295 subjects. 3 subjects were excluded from the TactiCath group resulting in n=152 subjects 2 subjects excluded from the Control group resulting in n=143 subjects
0.00%
0/143 • 12 months
The Safety analysis population excludes 5 subjects who signed consent and were randomized but were not exposed to the study procedure or the study device resulting in n=295 subjects. 3 subjects were excluded from the TactiCath group resulting in n=152 subjects 2 subjects excluded from the Control group resulting in n=143 subjects
Cardiac disorders
Atrial Perforation
0.00%
0/152 • 12 months
The Safety analysis population excludes 5 subjects who signed consent and were randomized but were not exposed to the study procedure or the study device resulting in n=295 subjects. 3 subjects were excluded from the TactiCath group resulting in n=152 subjects 2 subjects excluded from the Control group resulting in n=143 subjects
0.70%
1/143 • Number of events 1 • 12 months
The Safety analysis population excludes 5 subjects who signed consent and were randomized but were not exposed to the study procedure or the study device resulting in n=295 subjects. 3 subjects were excluded from the TactiCath group resulting in n=152 subjects 2 subjects excluded from the Control group resulting in n=143 subjects
Respiratory, thoracic and mediastinal disorders
Pulmonary edema
1.3%
2/152 • Number of events 2 • 12 months
The Safety analysis population excludes 5 subjects who signed consent and were randomized but were not exposed to the study procedure or the study device resulting in n=295 subjects. 3 subjects were excluded from the TactiCath group resulting in n=152 subjects 2 subjects excluded from the Control group resulting in n=143 subjects
1.4%
2/143 • Number of events 2 • 12 months
The Safety analysis population excludes 5 subjects who signed consent and were randomized but were not exposed to the study procedure or the study device resulting in n=295 subjects. 3 subjects were excluded from the TactiCath group resulting in n=152 subjects 2 subjects excluded from the Control group resulting in n=143 subjects
Vascular disorders
Vascular Access Complication
2.0%
3/152 • Number of events 3 • 12 months
The Safety analysis population excludes 5 subjects who signed consent and were randomized but were not exposed to the study procedure or the study device resulting in n=295 subjects. 3 subjects were excluded from the TactiCath group resulting in n=152 subjects 2 subjects excluded from the Control group resulting in n=143 subjects
2.1%
3/143 • Number of events 3 • 12 months
The Safety analysis population excludes 5 subjects who signed consent and were randomized but were not exposed to the study procedure or the study device resulting in n=295 subjects. 3 subjects were excluded from the TactiCath group resulting in n=152 subjects 2 subjects excluded from the Control group resulting in n=143 subjects
General disorders
Hospitalization
2.6%
4/152 • Number of events 4 • 12 months
The Safety analysis population excludes 5 subjects who signed consent and were randomized but were not exposed to the study procedure or the study device resulting in n=295 subjects. 3 subjects were excluded from the TactiCath group resulting in n=152 subjects 2 subjects excluded from the Control group resulting in n=143 subjects
3.5%
5/143 • Number of events 5 • 12 months
The Safety analysis population excludes 5 subjects who signed consent and were randomized but were not exposed to the study procedure or the study device resulting in n=295 subjects. 3 subjects were excluded from the TactiCath group resulting in n=152 subjects 2 subjects excluded from the Control group resulting in n=143 subjects

Other adverse events

Other adverse events
Measure
TactiCath
n=152 participants at risk
Ablation performed using the TactiCath contact force sensing catheter Catheter ablation for the treatment of paroxysmal atrial fibrillation: A pulmonary vein isolation procedure will be performed using radiofrequency ablation.
Control
n=143 participants at risk
Ablation performed using a catheter with no contact force sensing capability Catheter ablation for the treatment of paroxysmal atrial fibrillation: A pulmonary vein isolation procedure will be performed using radiofrequency ablation.
Cardiac disorders
Cardiac disorders
25.0%
38/152 • Number of events 75 • 12 months
The Safety analysis population excludes 5 subjects who signed consent and were randomized but were not exposed to the study procedure or the study device resulting in n=295 subjects. 3 subjects were excluded from the TactiCath group resulting in n=152 subjects 2 subjects excluded from the Control group resulting in n=143 subjects
25.2%
36/143 • Number of events 59 • 12 months
The Safety analysis population excludes 5 subjects who signed consent and were randomized but were not exposed to the study procedure or the study device resulting in n=295 subjects. 3 subjects were excluded from the TactiCath group resulting in n=152 subjects 2 subjects excluded from the Control group resulting in n=143 subjects
Vascular disorders
Vascular disorders
11.2%
17/152 • Number of events 20 • 12 months
The Safety analysis population excludes 5 subjects who signed consent and were randomized but were not exposed to the study procedure or the study device resulting in n=295 subjects. 3 subjects were excluded from the TactiCath group resulting in n=152 subjects 2 subjects excluded from the Control group resulting in n=143 subjects
6.3%
9/143 • Number of events 9 • 12 months
The Safety analysis population excludes 5 subjects who signed consent and were randomized but were not exposed to the study procedure or the study device resulting in n=295 subjects. 3 subjects were excluded from the TactiCath group resulting in n=152 subjects 2 subjects excluded from the Control group resulting in n=143 subjects
Respiratory, thoracic and mediastinal disorders
Repiratory, thoracic and mediastinal disorders
7.2%
11/152 • Number of events 11 • 12 months
The Safety analysis population excludes 5 subjects who signed consent and were randomized but were not exposed to the study procedure or the study device resulting in n=295 subjects. 3 subjects were excluded from the TactiCath group resulting in n=152 subjects 2 subjects excluded from the Control group resulting in n=143 subjects
2.1%
3/143 • Number of events 3 • 12 months
The Safety analysis population excludes 5 subjects who signed consent and were randomized but were not exposed to the study procedure or the study device resulting in n=295 subjects. 3 subjects were excluded from the TactiCath group resulting in n=152 subjects 2 subjects excluded from the Control group resulting in n=143 subjects
General disorders
General disorders
3.9%
6/152 • Number of events 6 • 12 months
The Safety analysis population excludes 5 subjects who signed consent and were randomized but were not exposed to the study procedure or the study device resulting in n=295 subjects. 3 subjects were excluded from the TactiCath group resulting in n=152 subjects 2 subjects excluded from the Control group resulting in n=143 subjects
4.9%
7/143 • Number of events 8 • 12 months
The Safety analysis population excludes 5 subjects who signed consent and were randomized but were not exposed to the study procedure or the study device resulting in n=295 subjects. 3 subjects were excluded from the TactiCath group resulting in n=152 subjects 2 subjects excluded from the Control group resulting in n=143 subjects
Investigations
Investigations
3.9%
6/152 • Number of events 6 • 12 months
The Safety analysis population excludes 5 subjects who signed consent and were randomized but were not exposed to the study procedure or the study device resulting in n=295 subjects. 3 subjects were excluded from the TactiCath group resulting in n=152 subjects 2 subjects excluded from the Control group resulting in n=143 subjects
4.2%
6/143 • Number of events 8 • 12 months
The Safety analysis population excludes 5 subjects who signed consent and were randomized but were not exposed to the study procedure or the study device resulting in n=295 subjects. 3 subjects were excluded from the TactiCath group resulting in n=152 subjects 2 subjects excluded from the Control group resulting in n=143 subjects
Nervous system disorders
Nervous systems disorders
4.6%
7/152 • Number of events 7 • 12 months
The Safety analysis population excludes 5 subjects who signed consent and were randomized but were not exposed to the study procedure or the study device resulting in n=295 subjects. 3 subjects were excluded from the TactiCath group resulting in n=152 subjects 2 subjects excluded from the Control group resulting in n=143 subjects
1.4%
2/143 • Number of events 4 • 12 months
The Safety analysis population excludes 5 subjects who signed consent and were randomized but were not exposed to the study procedure or the study device resulting in n=295 subjects. 3 subjects were excluded from the TactiCath group resulting in n=152 subjects 2 subjects excluded from the Control group resulting in n=143 subjects
Gastrointestinal disorders
Gastrointestinal disorders
2.6%
4/152 • Number of events 4 • 12 months
The Safety analysis population excludes 5 subjects who signed consent and were randomized but were not exposed to the study procedure or the study device resulting in n=295 subjects. 3 subjects were excluded from the TactiCath group resulting in n=152 subjects 2 subjects excluded from the Control group resulting in n=143 subjects
2.8%
4/143 • Number of events 5 • 12 months
The Safety analysis population excludes 5 subjects who signed consent and were randomized but were not exposed to the study procedure or the study device resulting in n=295 subjects. 3 subjects were excluded from the TactiCath group resulting in n=152 subjects 2 subjects excluded from the Control group resulting in n=143 subjects
Renal and urinary disorders
Renal and urinary disorders
2.6%
4/152 • Number of events 4 • 12 months
The Safety analysis population excludes 5 subjects who signed consent and were randomized but were not exposed to the study procedure or the study device resulting in n=295 subjects. 3 subjects were excluded from the TactiCath group resulting in n=152 subjects 2 subjects excluded from the Control group resulting in n=143 subjects
2.8%
4/143 • Number of events 4 • 12 months
The Safety analysis population excludes 5 subjects who signed consent and were randomized but were not exposed to the study procedure or the study device resulting in n=295 subjects. 3 subjects were excluded from the TactiCath group resulting in n=152 subjects 2 subjects excluded from the Control group resulting in n=143 subjects
Infections and infestations
Infection and infestations
2.6%
4/152 • Number of events 4 • 12 months
The Safety analysis population excludes 5 subjects who signed consent and were randomized but were not exposed to the study procedure or the study device resulting in n=295 subjects. 3 subjects were excluded from the TactiCath group resulting in n=152 subjects 2 subjects excluded from the Control group resulting in n=143 subjects
1.4%
2/143 • Number of events 2 • 12 months
The Safety analysis population excludes 5 subjects who signed consent and were randomized but were not exposed to the study procedure or the study device resulting in n=295 subjects. 3 subjects were excluded from the TactiCath group resulting in n=152 subjects 2 subjects excluded from the Control group resulting in n=143 subjects
Injury, poisoning and procedural complications
Injury, poisoning and procedural complications
1.3%
2/152 • Number of events 2 • 12 months
The Safety analysis population excludes 5 subjects who signed consent and were randomized but were not exposed to the study procedure or the study device resulting in n=295 subjects. 3 subjects were excluded from the TactiCath group resulting in n=152 subjects 2 subjects excluded from the Control group resulting in n=143 subjects
2.1%
3/143 • Number of events 3 • 12 months
The Safety analysis population excludes 5 subjects who signed consent and were randomized but were not exposed to the study procedure or the study device resulting in n=295 subjects. 3 subjects were excluded from the TactiCath group resulting in n=152 subjects 2 subjects excluded from the Control group resulting in n=143 subjects
Musculoskeletal and connective tissue disorders
Muskuloskeletal and connective disorders
1.3%
2/152 • Number of events 2 • 12 months
The Safety analysis population excludes 5 subjects who signed consent and were randomized but were not exposed to the study procedure or the study device resulting in n=295 subjects. 3 subjects were excluded from the TactiCath group resulting in n=152 subjects 2 subjects excluded from the Control group resulting in n=143 subjects
1.4%
2/143 • Number of events 2 • 12 months
The Safety analysis population excludes 5 subjects who signed consent and were randomized but were not exposed to the study procedure or the study device resulting in n=295 subjects. 3 subjects were excluded from the TactiCath group resulting in n=152 subjects 2 subjects excluded from the Control group resulting in n=143 subjects
Metabolism and nutrition disorders
Metabolism and nutrition disorders
0.00%
0/152 • 12 months
The Safety analysis population excludes 5 subjects who signed consent and were randomized but were not exposed to the study procedure or the study device resulting in n=295 subjects. 3 subjects were excluded from the TactiCath group resulting in n=152 subjects 2 subjects excluded from the Control group resulting in n=143 subjects
2.1%
3/143 • Number of events 3 • 12 months
The Safety analysis population excludes 5 subjects who signed consent and were randomized but were not exposed to the study procedure or the study device resulting in n=295 subjects. 3 subjects were excluded from the TactiCath group resulting in n=152 subjects 2 subjects excluded from the Control group resulting in n=143 subjects
Eye disorders
Eye disorders
0.00%
0/152 • 12 months
The Safety analysis population excludes 5 subjects who signed consent and were randomized but were not exposed to the study procedure or the study device resulting in n=295 subjects. 3 subjects were excluded from the TactiCath group resulting in n=152 subjects 2 subjects excluded from the Control group resulting in n=143 subjects
1.4%
2/143 • Number of events 4 • 12 months
The Safety analysis population excludes 5 subjects who signed consent and were randomized but were not exposed to the study procedure or the study device resulting in n=295 subjects. 3 subjects were excluded from the TactiCath group resulting in n=152 subjects 2 subjects excluded from the Control group resulting in n=143 subjects
Immune system disorders
Immune system disorders
0.66%
1/152 • Number of events 1 • 12 months
The Safety analysis population excludes 5 subjects who signed consent and were randomized but were not exposed to the study procedure or the study device resulting in n=295 subjects. 3 subjects were excluded from the TactiCath group resulting in n=152 subjects 2 subjects excluded from the Control group resulting in n=143 subjects
0.70%
1/143 • Number of events 1 • 12 months
The Safety analysis population excludes 5 subjects who signed consent and were randomized but were not exposed to the study procedure or the study device resulting in n=295 subjects. 3 subjects were excluded from the TactiCath group resulting in n=152 subjects 2 subjects excluded from the Control group resulting in n=143 subjects
Skin and subcutaneous tissue disorders
Skin and subcutaneous tissue disorders
1.3%
2/152 • Number of events 2 • 12 months
The Safety analysis population excludes 5 subjects who signed consent and were randomized but were not exposed to the study procedure or the study device resulting in n=295 subjects. 3 subjects were excluded from the TactiCath group resulting in n=152 subjects 2 subjects excluded from the Control group resulting in n=143 subjects
0.00%
0/143 • 12 months
The Safety analysis population excludes 5 subjects who signed consent and were randomized but were not exposed to the study procedure or the study device resulting in n=295 subjects. 3 subjects were excluded from the TactiCath group resulting in n=152 subjects 2 subjects excluded from the Control group resulting in n=143 subjects
Blood and lymphatic system disorders
Blood and lymphatic system disorders
0.00%
0/152 • 12 months
The Safety analysis population excludes 5 subjects who signed consent and were randomized but were not exposed to the study procedure or the study device resulting in n=295 subjects. 3 subjects were excluded from the TactiCath group resulting in n=152 subjects 2 subjects excluded from the Control group resulting in n=143 subjects
0.70%
1/143 • Number of events 1 • 12 months
The Safety analysis population excludes 5 subjects who signed consent and were randomized but were not exposed to the study procedure or the study device resulting in n=295 subjects. 3 subjects were excluded from the TactiCath group resulting in n=152 subjects 2 subjects excluded from the Control group resulting in n=143 subjects
Endocrine disorders
Endocrine disorders
0.00%
0/152 • 12 months
The Safety analysis population excludes 5 subjects who signed consent and were randomized but were not exposed to the study procedure or the study device resulting in n=295 subjects. 3 subjects were excluded from the TactiCath group resulting in n=152 subjects 2 subjects excluded from the Control group resulting in n=143 subjects
0.70%
1/143 • Number of events 1 • 12 months
The Safety analysis population excludes 5 subjects who signed consent and were randomized but were not exposed to the study procedure or the study device resulting in n=295 subjects. 3 subjects were excluded from the TactiCath group resulting in n=152 subjects 2 subjects excluded from the Control group resulting in n=143 subjects
Psychiatric disorders
Psychiatric disorders
0.00%
0/152 • 12 months
The Safety analysis population excludes 5 subjects who signed consent and were randomized but were not exposed to the study procedure or the study device resulting in n=295 subjects. 3 subjects were excluded from the TactiCath group resulting in n=152 subjects 2 subjects excluded from the Control group resulting in n=143 subjects
0.70%
1/143 • Number of events 1 • 12 months
The Safety analysis population excludes 5 subjects who signed consent and were randomized but were not exposed to the study procedure or the study device resulting in n=295 subjects. 3 subjects were excluded from the TactiCath group resulting in n=152 subjects 2 subjects excluded from the Control group resulting in n=143 subjects
Reproductive system and breast disorders
Reproductive system and breast disorders
0.66%
1/152 • Number of events 1 • 12 months
The Safety analysis population excludes 5 subjects who signed consent and were randomized but were not exposed to the study procedure or the study device resulting in n=295 subjects. 3 subjects were excluded from the TactiCath group resulting in n=152 subjects 2 subjects excluded from the Control group resulting in n=143 subjects
0.00%
0/143 • 12 months
The Safety analysis population excludes 5 subjects who signed consent and were randomized but were not exposed to the study procedure or the study device resulting in n=295 subjects. 3 subjects were excluded from the TactiCath group resulting in n=152 subjects 2 subjects excluded from the Control group resulting in n=143 subjects

Additional Information

Lori Rusch, Ph.D.

Abbott

Phone: 651-756-2668

Results disclosure agreements

  • Principal investigator is a sponsor employee
  • Publication restrictions are in place

Restriction type: LTE60