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Reverse Prediction of Ion Channel Remodeling in Patients With Atrial Fibrillation Utilizing Monophasic Action Potential and Mathematical Modeling

NCT02414815 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 50

Last updated 2019-02-27

No results posted yet for this study

Summary

Atrial fibrillation(AF) is the most common sustained arrhythmia in humans. The loss of rate-dependent action potential duration(APD) adaptation is one of the characteristics of atrial fibrillation, but detailed understanding of mechanism is limited. Thus, we propose to utilize the monophasic action potential recording data from human patients in three groups, control, paroxysmal and persistent atrial fibrillation, and apply reverse engineering method to quantify the extent of electrical remodeling of ionic channel parameters using a mathematical model of atrial cell. Our approach will be useful in developing drug targets for ion channels in atrial fibrillation patients.

Conditions

Interventions

DEVICE

Monophasic action potential(MAP) catheter

After ordinary procedure for electrophysiologic study or catheter ablation, the investigators will replace conventional catheter to monophasic action potential (MAP) recording catheter through right femoral sheath. MAP recording catheter is introduced to endocardial surface of atrium, and we record atrial MAP at variable pacing cycle lengths: steady state cycle lengths of 600, 400, 300, 240, 220, 240, 260, 300, 400 and 600 ms. At each cycle length, pacing was applied for 20 sec. It takes less than 5 min to acquire MAP recordings.

Sponsors & Collaborators

  • Yonsei University

    lead OTHER

Study Design

Allocation
NA
Purpose
DIAGNOSTIC
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
19 Years
Max Age
75 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2015-08-28
Primary Completion
2017-03-02
Completion
2017-03-02

Countries

  • South Korea

Study Locations

More Related Trials

Entities

Diseases

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT02414815 on ClinicalTrials.gov