# CHAMPION trial

Study · id `cardio:champion-trial` · Cardiovascular Atlas · release `f6f6f1b6f50379ed` (public)

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Also called: CHAMPION; CardioMEMS Heart Sensor Allows Monitoring of Pressure to Improve Outcomes in NYHA Class III Heart Failure Patients

Browse, organ or system: Heart  
Browse, condition area: Heart failure  

## In plain language

A trial in US adults with NYHA class III heart failure and a past hospital stay for heart failure. The registry results describe 550 implanted patients, and the registry says the sensor is implanted in the pulmonary artery. Clinicians used daily pressure readings from it to adjust care in the treatment group; the control group had standard care. Over 6 months, the treatment group had fewer hospital admissions for heart failure. Only the patients, not the clinicians, were masked to the assignment.

## Technical summary

Industry-sponsored randomized single-blind trial (NCT00531661; the registry lead sponsor is CardioMEMS) of a wireless implantable hemodynamic monitoring system, the device that the US regulator approved under PMA P100045. The abstract of the main report gives 83 heart-failure-related hospitalisations in the treatment group (270 people) against 120 in the control group (280 people) at 6 months, hazard ratio 0.70 (95% CI 0.60 to 0.84). PubMed links an erratum (2012;379:412) that was not read. The registry count of 550 is the registry's actual enrollment; the abstract gives the two group sizes (270 and 280) for the 6-month analysis. The full text was not read. The abstract names CardioMEMS as the funder.

## Key facts

- Design: Randomized, parallel-group, single-blind trial of heart-failure management guided by an implanted wireless pulmonary artery pressure sensor, against standard care. The registry records masking as single and the phase as not applicable. Only patients were masked.
- Phase: Not applicable
- Enrolled: 550 participants (enrolled count; CardioMEMS Heart Sensor Allows Monitoring of Pressure to Improve Outcomes in NYHA Class III Heart Failure Patients, snapshot `cardio:ctgov-nct00531661-2026-10-14`, retrieved 2026-10-14)
- Started: 2007-09 (CardioMEMS Heart Sensor Allows Monitoring of Pressure to Improve Outcomes in NYHA Class III Heart Failure Patients, snapshot `cardio:ctgov-nct00531661-2026-10-14`, retrieved 2026-10-14)
- Primary completion: 2010-05 (actual) (CardioMEMS Heart Sensor Allows Monitoring of Pressure to Improve Outcomes in NYHA Class III Heart Failure Patients, snapshot `cardio:ctgov-nct00531661-2026-10-14`, retrieved 2026-10-14)
- Completion: 2014-11 (actual) (CardioMEMS Heart Sensor Allows Monitoring of Pressure to Improve Outcomes in NYHA Class III Heart Failure Patients, snapshot `cardio:ctgov-nct00531661-2026-10-14`, retrieved 2026-10-14)
- Results first posted: 2013-04-09 (CardioMEMS Heart Sensor Allows Monitoring of Pressure to Improve Outcomes in NYHA Class III Heart Failure Patients, snapshot `cardio:ctgov-nct00531661-2026-10-14`, retrieved 2026-10-14)
- Countries: United States (CardioMEMS Heart Sensor Allows Monitoring of Pressure to Improve Outcomes in NYHA Class III Heart Failure Patients, snapshot `cardio:ctgov-nct00531661-2026-10-14`, retrieved 2026-10-14)
- Care setting: Not reported
- Registry status: "COMPLETED" (U.S. National Library of Medicine (ClinicalTrials.gov), snapshot `cardio:ctgov-nct00531661-2026-10-14`, retrieved 2026-10-14)

## Connected pages

- Tests this device: CardioMEMS HF System (`cardio:cardiomems-hf-system`)
- Studies people with this condition: Heart failure (`cardio:heart-failure`)

## Provenance

Content hash: 328c0bc2b99c1e71b494db49faa2a128ccf54f695b1b27ce51e4d90007fdcc9e
Last substantive edit: 2026-10-15
Evidence last checked: 2026-10-14