Gravitational Arrhythmogenesis Can the Often-heard Symptom of Body Position Dependent Palpitations be Proven

Study Overview
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Brief Summary
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This study aims to assess the relationship between body position and the occurrence of either atrial or ventricular premature beats and more complex arrhythmia

Detailed Description
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Rationale: Palpitations in a certain body position is an often-heard symptom, although there is currently no direct evidence that links body position with arrhythmia. The hypothesis is that arrhythmia is more prevalent in the specific body position that the patient reports to be arrhythmogenic. Objective: The objective of this study is to assess the relationship between body position and the occurrence of either atrial or ventricular premature beats and more complex arrhythmia (AT, atrial fibrillation (AF), VT) in a population that have a self-reported preferential body position for symptoms. Study design: Single cohort study. Subjects are recruited from the outpatient clinic. First, they will fill in a short questionnaire regarding their symptoms; second, they will be outfitted with a downgraded polygraphy device, that only monitors body position, and single and/or multi lead ECG for 24 hours. The acquired data will be analyzed at the Catharina Hospital and the Eindhoven University of Technology. Study population: Outpatients with palpitations and a self-reported higher prevalence in a certain body position that have an indication to undergo Holter monitoring, independent of any previous diagnosis. Main study parameters/endpoints: The frequency of ectopic beats or onset of complex arrhythmia (n per minute) in the body position that the patient has reported as arrhythmogenic, compared to arrhythmia rate in the other body positions, corrected for time spent per body position.

Official Title
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Gravitational Arrhythmogenesis Can the Often-heard Symptom of Body Position Dependent Palpitations be Proven

Conditions
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Cardiac Complexes, Premature, Atrial Fibrillation

Intervention / Treatment
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* Device: Single night downgraded home polygraphy


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Palpitations, spontaneously described to occur either predominantly or solely in a certain body position (upright, prone, supine, left or right lateral decubital position). Ability to provide informed consent Exclusion Criteria: There are no exclusion criteria for this study.

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Single arm<br>Patients with self-reported symptoms of positional dependent palpitations | Device: Single night downgraded home polygraphy<br>* All patients will be outfitted with the ambulatory downgraded polygraphy device (Nox A1, Nox Medical Global, Reykjavik) for 24 hour monitoring. The data exported by the polygraphy device is in European Data Format and will be filtered and annotated using custom MATLAB-software.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Arrhythmia per body position | The frequency of ectopic beats or onset of complex arrhythmia (n per minute) in the body position that the patient has reported as arrhythmogenic, compared to arrhythmia rate in the other body positions, corrected for time spent per body position. | 1 night recording | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Body position