Cardiac Electrophysiological Study

August 17, 2011 updated by: AstraZeneca

A Multi-centre, Double-blind, Randomised, Placebo-controlled, Singledose, Phase II Study to Assess the Effects on Atrial and Ventricular Refractoriness and Haemodynamics of an Intravenous Infusion of AZD1305 in Patients Undergoing an Invasive Electrophysiological Procedure

The purpose of the study is to measure the effects of AZD1305 on cardiac electrophysiological properties and intracardiac pressures

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
55

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 2

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Denmark
      • Aalborg, Denmark
        • Research Site
      • Arhus, Denmark
        • Research Site
      • Hellerup, Denmark
        • Research Site
      • København, Denmark
        • Research Site
  • Finland
      • Helsinki, Finland
        • Research Site
      • Kuopio, Finland
        • Research Site
      • Oulu, Finland
        • Research Site
  • Norway
      • Bergen, Norway
        • Research Site
      • Oslo, Norway
        • Research Site
  • Sweden
      • Gŏteborg, Sweden
        • Research Site
      • Linkŏping, Sweden
        • Research Site
      • Umea, Sweden
        • Research Site
      • Ŏrebro, Sweden
        • Research Site

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

20 years to 80 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Patients with atrial flutter (with a ventricular rate of <100 beats/minute at enrolment), scheduled for curative catheter ablation
  • Sinus rhythm at randomisation

Exclusion Criteria:

  • QTc (Fridericia, QTcF ) >450 ms measured in sinus rhythm at randomisation,
  • Serum potassium below 3.8 or above 5.0 mmol/L or plasma potassium below 3.6 or above 5.0 mmol/L
  • QRS duration >120 ms at randomisation

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Single Group Assignment
  • Masking: Double

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
LAERP (Left Atrial Effective Refractory Period (ie, the Longest S1-S2 Interval That Fails to Result in Atrial Depolarisation))
Time Frame: Measurements were obtained twice, from the invasive electrophysiological measurements made before and 20 min (or more) after the start of administration of the investigational product
Absolute change, after - before infusion
Measurements were obtained twice, from the invasive electrophysiological measurements made before and 20 min (or more) after the start of administration of the investigational product

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
RAERP (Right Atrial Effective Refractory Period)
Time Frame: Measurements were obtained twice, from the invasive electrophysiological measurements made before and 20 min (or more) after the start of administration of the investigational product
Absolute change, after - before infusion
Measurements were obtained twice, from the invasive electrophysiological measurements made before and 20 min (or more) after the start of administration of the investigational product
VERP (Ventricular Effective Refractory Period)) and Other Electrophysiological and Electrocardiographic Variables; RR, P Wave Duration, PR, QRS, QTend, QTcF, QTtop, QTend - QTtop)
Time Frame: Measurements were obtained twice, from the invasive electrophysiological measurements made before and 20 min (or more) after the start of administration of the investigational product
Absolute change, after - before infusion
Measurements were obtained twice, from the invasive electrophysiological measurements made before and 20 min (or more) after the start of administration of the investigational product
QTcF (Interval From the Beginning of the Q or R Wave to the End of the T Wave in the Surface ECG, Corrected for Changes in RR Interval Using Fridericia' Formula =QT/RR1/3 Interval in Seconds)
Time Frame: Measurements were obtained twice, from the invasive electrophysiological measurements made before and 20 min (or more) after the start of administration of the investigational product. ECG measurements, including QTcF, are available from several additiona
Absolute change, after - before infusion
Measurements were obtained twice, from the invasive electrophysiological measurements made before and 20 min (or more) after the start of administration of the investigational product. ECG measurements, including QTcF, are available from several additiona
Cmax Observed for AZD1305
Time Frame: During and after infusion
A total of 13 scheduled PK samples for each patient during and after infusion
During and after infusion
AUC Total of AZD1305 (Umol*h/L)
Time Frame: Based on PK samples during and after infusion
A total of 13 scheduled PK samples for each patient during and after infusion
Based on PK samples during and after infusion
Number of Patients Who Had at Least One AE
Time Frame: During active treatment period
Number of patients
During active treatment period

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
AstraZeneca

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Lauri Toivonen, MD, Helsinki University Central Hospital

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
January 1, 2008

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
June 1, 2008

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
June 1, 2008

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
February 5, 2008

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
February 5, 2008

First Posted (Estimate)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
February 15, 2008

Study Record Updates

Last Update Posted (Estimate)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
September 22, 2011

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
August 17, 2011

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
August 1, 2011

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • D3190C00005
  • 2007-0003455-36 (EudraCT No)

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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