We are updating the design of this site. Learn more.
Show more
ClinicalTrials.gov
ClinicalTrials.gov Menu

A Multi-centre Study Comparing the Effects of AZD2927 and Placebo on the Electrical Activity in the Heart in Patients

This study has been completed.
Sponsor:
ClinicalTrials.gov Identifier:
NCT01396226
First Posted: July 18, 2011
Last Update Posted: November 27, 2012
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
Information provided by (Responsible Party):
AstraZeneca
  Purpose
Medical Products Agency

Condition Intervention Phase
Arrhythmia Drug: AZD2927 Drug: Placebo Phase 2

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double (Participant, Investigator)
Primary Purpose: Basic Science
Official Title: A Multi-Centre, Double-Blind, Randomised, Placebo-Controlled Phase II Study to Assess the Effects on Atrial and Ventricular Refractoriness of an Intravenous Infusion of AZD2927 in Patients Undergoing an Invasive Electrophysiological Procedure

Further study details as provided by AstraZeneca:

Primary Outcome Measures:
  • Left Atrial Effective Refractory Period [ Time Frame: Baseline to last assessment during IP infusion ]
    Change in LAERP from before IP infusion to 1st and 2nd assessments during IP infusion


Secondary Outcome Measures:
  • Ventricular Effective Refractory Period [ Time Frame: Baseline to last assessment during IP infusion ]
    Change in VERP from before IP infusion to 1st and 2nd assessments during IP infusion

  • Paced QT Interval [ Time Frame: Baseline to last assessment during IP infusion ]
    Change in CS Paced QT interval (P600 MS) from before and after IP infusion during electrophysiological measurements

  • Atrio-ventricular Effective Refractory Period [ Time Frame: Baseline to last assessment during IP infusion ]
    Change from observation before IP infusion to during 1st and 2nd LAERP Mean

  • PA Interval [ Time Frame: Baseline to last assessment during IP infusion ]
    Reflects intra-atrial conduction and is defined as the interval from the onset of the P wave in the surface ECG to the onset of atrial activation (A) in the His bundle electrogram. Change from observation before IP infusion to 30 min after IP start

  • AH Interval [ Time Frame: Baseline to last assessment during IP infusion ]
    Change from observation before IP infusion to 30 mins after IP start. AH interval- the conduction time from the low right atrium at the inter-atrial septum through the AV node to the His bundle, ie, intra-nodal conduction time.

  • HV Interval [ Time Frame: Baseline to last assessment during IP infusion ]
    Change from observation before IP infusion to 30 mins after IP start. HV interval - represents conduction time from the proximal His bundle to the ventricular myocardium, ie, infra-nodal conduction time.

  • PR Interval [ Time Frame: Baseline to last assessment during IP infusion ]
    Interval from the onset of the P-wave to the start of the QRS complex. Change from observation before IP infusion to 6 to 8 hours and 20 to 24 hours after IP infusion

  • QRS Duration [ Time Frame: Baseline to last assessment during IP infusion ]
    Change from observation before IP infusion to 6 to 8 hours and 20 to 24 hours after IP infusion

  • RR Interval [ Time Frame: Baseline to last assessment during IP infusion ]
    Change from observation before IP infusion to 6 to 8 hours and 20 to 24 hours after IP infusion


Enrollment: 20
Study Start Date: September 2011
Study Completion Date: January 2012
Primary Completion Date: January 2012 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: 1
A single dose of AZD2927 administered as an iv infusion
Drug: AZD2927
A single dose of AZD2927 administered as an iv infusion
Placebo Comparator: 2
A single dose of placebo administered as an iv infusion
Drug: Placebo
A single dose of placebo administered as an iv infusion

Detailed Description:
  • A Multi-Centre, Double-Blind, Randomised, Placebo-Controlled Phase II Study to Assess the Effects on Atrial and Ventricular Refractoriness of an Intravenous Infusion of AZD2927 in Patients Undergoing an Invasive Electrophysiological Procedure.
  • The study has an adaptive design. In the 1st dose group the planned number of randomised patients is 24. The tentative number of randomised patients in the optional 2nd dose group is 12, 24 or 36 and thus a total maximum of 60 patients will be randomised in the study.
  Eligibility

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.


Ages Eligible for Study:   20 Years to 80 Years   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  • male or postmenopausal female, aged 20 to 80 years inclusive,
  • clinical indication for catheter ablation of atrial flutter,
  • history of paroxysmal atrial flutter, with or without paroxysmal AF. Single episodes of persistent atrial flutter or AF requiring cardioversion do not exclude the patient from the study,
  • sinus rhythm at randomisation,
  • adequate anticoagulation or antithrombotic treatment according to ESC guidelines 2010 or national guideline,

Exclusion Criteria:

  • cardioversion within 14 days before randomisation,
  • history of stroke or transient ischaemic attack (TIA). History of significant head trauma, epilepsy or other disorders increasing the risk for seizures,
  • QTcF >450 ms or <350 ms measured in sinus rhythm at randomisation,
  • history and/or signs of clinically significant sinus node dysfunction. Sinus bradycardia (50 beats per minute or less) at randomisation,
  • personal or family history of Torsades de Pointes (TdP), any other polymorphic ventricular tachycardia, long QT syndrome, short QT syndrome, Brugada syndrome, or personal history of sustained (>30 s) monomorphic ventricular tachycardia.
  Contacts and Locations
Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01396226


Locations
Norway
Research Site
Oslo, Norway
Sweden
Research Site
Linköping, Sweden
Research Site
Stockholm, Sweden
Research Site
Umeå, Sweden
Research Site
Örebro, Sweden
Sponsors and Collaborators
AstraZeneca
Investigators
Study Director: Stefan C Carlsson, MD, PHD AstraZeneca
Principal Investigator: Hakan Walfridsson, MD, PHD University Hospital Linkoping Sweden
  More Information

Responsible Party: AstraZeneca
ClinicalTrials.gov Identifier: NCT01396226     History of Changes
Other Study ID Numbers: D4120C00002
2011-001716-59 ( EudraCT Number )
First Submitted: July 13, 2011
First Posted: July 18, 2011
Results First Submitted: September 24, 2012
Results First Posted: October 23, 2012
Last Update Posted: November 27, 2012
Last Verified: November 2012

Keywords provided by AstraZeneca:
Atrial refractoriness
cardiac electrophysiology
IKACh