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June 1, 1990European Heart Journal

AAI-R pacing significantly increased maximum heart rate (120 +/- 1 vs 97 +/- 21 bpm, P < 0.01) and average exercise time (13.4 +/- 3 vs 11.2 +/- 2 min, P < 0.01) compared to AAI pacing.

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Why the study?

Does atrial rate-responsive pacing (AAI-R) improve exercise treadmill capacity compared to conventional atrial inhibited pacing (AAI) in patients with sinus node disease and chronotropic incompetence?

Population

40 patients with sinus node disease and chronotropic incompetence. A subset of 12 patients with persistent…

Comparison

Atrial rate-responsive pacing using an… vs Conventional atrial inhibited pacing (AAI)

Design

RCT, randomized crossover, double-blind

Follow-up

average 12.5 +/- 8 months (range 3-30)

Authors

MRMårten RosenqvistCAClaes ArénBKBO‐ERIK KRISTENSSON

Discussion

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Overview

AAI-R pacing improves exercise capacity in sinus node disease with chronotropic incompetence; supports rate-responsive modes over standard AAI in this population.

Structured PICO

Does atrial rate-responsive pacing (AAI-R) improve exercise treadmill capacity compared to conventional atrial inhibited pacing (AAI) in patients with sinus node disease and chronotropic incompetence?

P
Population
40 patients with sinus node disease (SND) and chronotropic incompetence (intraoperative AV nodal block cycle-length >100 beats min-1). A subset of 12 patients with persistent chronotropic incompetence were included in the crossover study.
I
Intervention
Atrial rate-responsive pacing (AAI-R) using an activity-sensing pulse generator with a single atrial lead
C
Comparator
Conventional atrial inhibited pacing (AAI)
O
Outcome
Exercise treadmill capacity (maximum heart rate and average exercise time)surrogate

Atrial rate-responsive pacing significantly improves maximum heart rate and exercise duration in patients with sinus node disease and chronotropic incompetence compared to conventional pacing.

Cite This Study

Rosenqvist et al. (1990) studied this question.

synapsesocial.com/papers/6a7059046ceb2bbd16dfdccdhttps://doi.org/10.1093/oxfordjournals.eurheartj.a059747
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Also Consider

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

  1. 1Respiratory‐Dependent Atrial Pacing, Management of Sinus Node Disease1988 · 22 citations
  2. 2Practical Aspects of Rate Adaptive Atrial (AAI,R) Pacing: Clinical Experiences in 44 Patients1991 · 19 citations
  3. 3Atrial adaptive rate pacing in sick sinus syndrome: effects on exercise capacity and arrhythmias.1993 · 27 citations
  4. 4Atrioventricular Conduction Disturbances in Patients with Sinoatrial Node Disease and Atrial Pacing1992 · 11 citations
  5. 5A comparison of AAIR versus DDDR pacing for patients with sinus node dysfunction: a long-term follow-up study2021 · 5 citations