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October 12, 2021Heart Rhythm O2Open Access

The BIO-AffectDX study is a prospective observational protocol designed to evaluate 12-month clinical composite score improvement in 400 patients with heart failure and atrial fibrillation implanted with a 2-lead CRT-DX system, with no results reported yet.

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Why the study?

Evidence supporting CRT in patients with both HF and AF is largely limited to retrospective or post hoc analyses, leaving a need for prospective contemporary data.

Does a 2-lead CRT-DX system improve a clinical composite score in heart failure patients with concomitant atrial fibrillation?

Population

Approximately 400 HF patients with concomitant AF

Comparison

Implantation with a 2-lead CRT-DX system

Design

US-based prospective observational multicenter clinical trial

Follow-up

1 year

Key result

The BIO-AffectDX study is a prospective observational protocol designed to evaluate 12-month clinical composite score improvement in 400 patients with heart failure and atrial fibrillation implanted with a 2-lead CRT-DX system, with no results reported yet.

Authors

JHJonathan C. HsuAHAaron HesselsonJLJackson J. Liang

Discussion

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Member takes

Overview

No clinical data yet support 2-lead CRT-DX in HF with AF; this protocol leaves open whether it improves composite scores.

Study Design

Type

Observational (n=400)

Multicenter

Yes

Structured PICO

Does a 2-lead CRT-DX system improve a clinical composite score in heart failure patients with concomitant atrial fibrillation?

P
Population
Approximately 400 US-based patients with heart failure and concomitant atrial fibrillation implanted with a 2-lead CRT-DX system, followed for 1 year.
E
Exposure
2-lead CRT-DX system capable of sensing in the atrium, aggregating diagnostics, and delivering CRT therapy
O
Outcome
Percentage of all HF subjects with an improvement in a clinical composite score from pre-CRT implant to 12 monthscomposite

The BIO-AffectDX study protocol outlines a prospective observational trial to evaluate the clinical outcomes of a 2-lead CRT-DX system in patients with heart failure and concomitant atrial fibrillation.

Cite This Study

Hsu et al. (2021) conducted an observational in Heart failure with concomitant atrial fibrillation (n=400). 2-lead CRT-DX system was evaluated on Percentage of all HF subjects with an improvement in a clinical composite score from pre-CRT implant to 12 months. The BIO-AffectDX study is a prospective observational protocol designed to evaluate 12-month clinical composite score improvement in 400 patients with heart failure and atrial fibrillation implanted with a 2-lead CRT-DX system, with no results reported yet.

synapsesocial.com/papers/6a979ed9618eaafe842d2841https://doi.org/10.1016/j.hroo.2021.10.001
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Novel two‐lead cardiac resynchronization therapy system provides equivalent CRT responses with less complications than a conventional three‐lead system: Results from the QP ExCELs lead registry2020 · 13 citations
  2. 2Subclinical atrial fibrillation detection with a floating atrial sensing dipole in single lead implantable cardioverter‐defibrillator systems: Results of the SENSE trial2019 · 34 citations
  3. 3Resumption of sinus rhythm in patients with heart failure and permanent atrial fibrillation undergoing cardiac resynchronization therapy: a longitudinal observational study2010 · 80 citations
  4. 4Longer-term effects of cardiac resynchronization therapy on mortality in heart failure [the CArdiac REsynchronization-Heart Failure (CARE-HF) trial extension phase]2006 · 654 citations
  5. 5Predictors of super-response to cardiac resynchronization therapy: the significance of heart failure medication, pre-implant left ventricular geometry and high percentage of biventricular pacing.2017 · 9 citations