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Comparison of Efficacy and Safety of Different Doses of Nifekalant Instant Cardioversion of Persistent Atrial Fibrillation During Radiofrequency Ablation

NCT04209959 · Status: UNKNOWN · Phase: PHASE4 · Type: INTERVENTIONAL · Enrollment: 300

Last updated 2019-12-24

No results posted yet for this study

Summary

Atrial fibrillation (AF) is one of the most common tachyarrhythmias with substantial morbidity, disability and mortality. It is estimated that the number of patients with AF is expected to reach 7 million by 2050. Radiofrequency catheter ablation (RFCA) are the effective treatment for patients with drug-refractory symptomatic paroxysmal or persistent AF. However, the successful rate of RFCA for persistent AF during the first procedure still relatively low, the investigators also need pharmacological cardioversion or external electrical conversion. Several studies showed intravenous nifekalant injection after RFCA provided relative high rate of sinus conversion during catheter ablation in paroxysmal or persistent AF. Nevertheless, there is still no acceptable universal opinion on which dosage of nifekalant is preferable for converting AF during the operation. In order to address this issue, the investigators initiated the study to evaluate the efficacy and safety of different doses of intravenous nifekalant injection in the rapid cardioversion of persistent AF during radiofrequency catheter ablation.

Conditions

Interventions

DRUG

nifekalant

Nifekalant was randomly given intravenously as a loading dose of 0.3 mg/kg, 0.4 mg/kg, or 0.5 mg/kg for five minutes without the continuous infusion for all study population, while blood pressure, surface electrocardiograms (ECG), intracardiac electrograms were monitored for half an hour. While nifekalant was given intravenously, QT interval, QTc interval and RR interval were recorded at 0, 1, 3, 5, 10, 15, 20 and 30minutes, respectively, because drug action almost disappeared within 30minutes since a single dose of intravenous nifekalant injection. These doses of nifekalant were determined based on the results of the previous study and the medicine operation instruction. Once AF continued after administration or Torsade de points was observed, external electrical cardioversion was given immediately.

Sponsors & Collaborators

  • Second Affiliated Hospital of Nanchang University

    lead OTHER

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
SINGLE
Model
PARALLEL

Eligibility

Min Age
18 Years
Max Age
85 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2019-01-01
Primary Completion
2020-01-01
Completion
2020-02-01

Countries

  • China

Study Locations

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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 NCT04209959 on ClinicalTrials.gov