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Study identifier: NCT05815745 Synced from ClinicalTrials.gov · July 28, 2026
● Recruiting

"Physiological vs Right Ventricular Pacing Outcome Trial Evaluated for bradyCardia Treatment" (PROTECT-HF)

Condition: Bradycardia · Pacing · Right Ventricular Pacing  ·  Sponsor: Imperial College London

PhaseNA
Planned participants2600
Who can joinAll sexes, 18 Years to no upper limit
Healthy volunteersNo

About this study

The PROTECT-HF multi-centre randomised controlled trial will compare two different pacing approaches for treating patients with slow heart rates. In it the investigators will compare a long-standing standard approach for pacing; right ventricular pacing, with a new form of pacing, physiological pacing (His and Left bundle area pacing) in 2600 patients. Patients will be allocated at random to receive either right ventricular pacing or physiological pacing. Endpoint measurements will be undertaken at baseline, and at six-monthly intervals post-randomisation. Treatment allocation will be blinded to the endpoint assessor and the patient. Recruitment and pacemaker implantation will be carried out at each participating centre. The primary analysis will be intention to treat. The investigators will also perform an on-treatment analysis. 2048 patients are needed to detect the expected effect size with 85% power. A total of 2600 patients will be recruited to allow for patient drop-out and crossover. 500-patient sub-study will assess within patient, and between groups, echocardiographic changes over a 24-month period to try and improve mechanistic understanding of PICM (Pacing Induced Cardiomyopathy).

This description comes directly from the study's public registry record.

Talk to the study team

Zachary Whinnett  ·  +447749576830  ·  z.whinnett@imperial.ac.uk

Daniel Keene  ·  +442075949776  ·  d.keene@imperial.ac.uk

Always discuss trial participation with your own doctor first.

Locations (45)

Beacon HospitalDublin, IrelandRecruiting
Univerisity Medical Centre LjubljanaLjubljana, SloveniaRecruiting
Aberdeen Royal InfirmaryAberdeen, United KingdomRecruiting
Queen's HospitalBarking, United KingdomRecruiting
Good Hope HospitalBirmingham, United KingdomRecruiting
Queen Elizabeth HospitalBirmingham, United KingdomRecruiting
University Hospital DorsetBournemouth, United KingdomRecruiting
Royal SUSSEX County HospitalBrighton, United KingdomRecruiting
Bristol Heart InstituteBristol, United KingdomRecruiting
Royal Papworth HospitalCambridge, United KingdomRecruiting
St Richard's HospitalChichester, United KingdomRecruiting
University Hospital CoventryCoventry, United KingdomRecruiting

+ 33 more locations — full list on the registry record.

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Source record: clinicaltrials.gov/study/NCT05815745