NCT03844516

Brief Summary

Implantation with left ventricular assist device (LVAD) in patients with end-stage heart failure (HF) leads to improvements in survival and quality of life, however, work capacity remains disappointingly low, at half of the expected value. Complex central and peripheral hallmarks of heart failure attribute to the continued work intolerance, to which heart rate may be a contributing factor. The purpose of this study is to clarify the impact of heart rate (by means of pacing) on work capacity (measured as peak oxygen uptake) in LVAD recipients.

Trial Health

43
At Risk

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Trial has exceeded expected completion date
Enrollment
15

participants targeted

Target at below P25 for not_applicable

Timeline
Completed

Started Apr 2019

Typical duration for not_applicable

Geographic Reach
1 country

1 active site

Status
unknown

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

February 15, 2019

Completed
3 days until next milestone

First Posted

Study publicly available on registry

February 18, 2019

Completed
2 months until next milestone

Study Start

First participant enrolled

April 23, 2019

Completed
1.8 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

January 31, 2021

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

January 31, 2021

Completed
Last Updated

June 2, 2020

Status Verified

May 1, 2020

Enrollment Period

1.8 years

First QC Date

February 15, 2019

Last Update Submit

May 29, 2020

Conditions

Keywords

Chronotropic incompetencepacingheart rateexercisepeak oxygen uptake

Outcome Measures

Primary Outcomes (1)

  • Peak oxygen uptake (pVO2)

    1 Day

Secondary Outcomes (1)

  • Heart rate

    1 Day

Study Arms (2)

Peak oxygen uptake test with pacing

OTHER

Peak oxygen uptake test with pacing

Other: Peak oxygen uptake test with pacing

Peak oxygen uptake test without pacing

SHAM COMPARATOR

Peak VO2 test without pacing

Other: Peak oxygen uptake test without pacing

Interventions

Peak oxygen uptake test with paced heart rate

Also known as: Regulation of pace-device
Peak oxygen uptake test with pacing

Peak oxygen uptake test without paced heart rate

Also known as: Sham pacing
Peak oxygen uptake test without pacing

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Implanted with a left ventricular assist device
  • Implanted with a pace-device ensuring the possibility of pacing
  • Age \> 18

You may not qualify if:

  • Not able to undergo a peak oxygen uptake test
  • No consent

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Rigshospitalet

Copenhagen, DK, 2100, Denmark

RECRUITING

MeSH Terms

Conditions

Motor Activity

Condition Hierarchy (Ancestors)

Behavior

Central Study Contacts

Finn Gustafsson, MD, PhD, DMSc.

CONTACT

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
DOUBLE
Who Masked
PARTICIPANT, INVESTIGATOR
Masking Details
Patients and staff performing the peak oxygen uptake test (pVO2) will be blinded to device regulation. Blinding will be ensured by recruiting a secondary doctor or other staff to regulate pace-settings in relation to the paced pVO2 test while performing sham regulations (or just read pace-settings) in relation to the non-paced pVO2 test. Thus, both patients and investigator are blinded.
Purpose
SUPPORTIVE CARE
Intervention Model
CROSSOVER
Sponsor Type
OTHER
Responsible Party
SPONSOR INVESTIGATOR
PI Title
Professor

Study Record Dates

First Submitted

February 15, 2019

First Posted

February 18, 2019

Study Start

April 23, 2019

Primary Completion

January 31, 2021

Study Completion

January 31, 2021

Last Updated

June 2, 2020

Record last verified: 2020-05

Locations