NCT04499612

Brief Summary

The hemostasis system is one of the many biological systems of the human body, designed to preserve the liquid state of blood and prevent its loss during vascular injuries. The ideal balance between its coagulant and anticoagulant components never occurs. In various diseases and pathological conditions, the balance of the hemostasis system may be disturbed. Shifts towards hypercoagulability lead to the development of hemorrhagic complications, opposite shifts lead to the development of thrombotic complications. Patients with cardiac implantable electronic devices (CIED) are not rare and unique, today doctors meet with them every day. Its more than 1.5 million CIED's implanted every year. Before surgery these patients are standard cardiology department patients with chronic heart failure (CHF), which develops due to the presence of arrhythmias, coronary heart disease, hypertension, congenital heart disease, myocardial infarction, myocarditis or other diseases and conditions. CHF is the most common, severe and unfavorable prognostic complication of these diseases. With CHF, the balance of the hemostasis system shifts towards hypercoagulation. Patients with CHF have an increased risk of arterial and venous thrombosis, pulmonary embolism, myocardial infarction, stroke, numerous brady- and tachyarrhythmias and other complications. After CIED implantation, bradyarrhythmia is eliminated, as one of the parts in the pathogenesis of CHF. Patients, especially those with severe symptoms, improve their condition in the early postoperative period. In the long-term period, pacing, on the contrary, may contribute to the progression of CHF. The wrong choice of pacing mode or the place of electrode implantation can lead to desynchronization of the heart chambers, myocardial remodeling and left ventricular dysfunction. Uncertainty is also observed in relation to the hemostasis system after CIED implantation. On the one hand, correction of bradyarrhythmia and CHF should provide patients with a shift towards hypocoagulability by normalizing the heart rate. On the other hand, trauma to the vessel wall during surgery, further placement of the CIED leads in the vessels, and perioperative stress can lead to even greater shifts towards hypercoagulation.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
250

participants targeted

Target at P75+ for all trials

Timeline
Completed

Started Mar 2020

Typical duration for all trials

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

March 1, 2020

Completed
5 months until next milestone

First Submitted

Initial submission to the registry

July 24, 2020

Completed
12 days until next milestone

First Posted

Study publicly available on registry

August 5, 2020

Completed
3.2 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

November 1, 2023

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

November 1, 2023

Completed
Last Updated

November 18, 2023

Status Verified

October 1, 2022

Enrollment Period

3.7 years

First QC Date

July 24, 2020

Last Update Submit

November 15, 2023

Conditions

Keywords

Cardiac implantable electronic devicesPacingHemostasisThromboembolismCardiovascular eventsArrhythmiasAtrial fibrillationChronic heart failure

Outcome Measures

Primary Outcomes (2)

  • Development of thromboembolism: venous thrombosis, pulmonary embolism, arterial thrombosis, arterial thromboembolism, transient ischemic attack, stroke.

    Development of thromboembolic complications after the cardiac implantable electronic device implantation/replace or thromboembolism in conservative group patients during observation period.

    Up to 2 years after enrollment (according to the study design).

  • Development of cardiovascular event: myocardial infarction, acute coronary syndrome, atrial fibrillation, decompensation of chronic heart failure.

    Development of cardiovascular events after the cardiac implantable electronic device implantation/replace or in conservative group patients during observation period.

    Up to 2 years after enrollment (according to the study design).

Secondary Outcomes (1)

  • Hemostasis system markers deviations.

    Up to 2 years after enrollment (according to the study design).

Study Arms (5)

Group "Single-chamber CIED" (A1)

50 patients with permanent atrial fibrillation and indications for cardiac implantable electronic device implantation (single-chamber system).

Procedure: Cardiac implantable electronic device implantation.Diagnostic Test: Duplex ultrasound.Diagnostic Test: Echocardiography.Diagnostic Test: Blood sampling.

Group "Dual-chamber CIED" (A2)

50 patients with atrioventricular block/sick sinus syndrome and indications for cardiac implantable electronic device implantation (dual-chamber system).

Procedure: Cardiac implantable electronic device implantation.Diagnostic Test: Duplex ultrasound.Diagnostic Test: Echocardiography.Diagnostic Test: Blood sampling.

Group "Dual-chamber CIED + Atrial fibrillation" (A3)

50 patients with atrioventricular block/sick sinus syndrome, paroxysmal or persistent atrial fibrillation and indications for cardiac implantable electronic device implantation (dual-chamber system).

Procedure: Cardiac implantable electronic device implantation.Diagnostic Test: Duplex ultrasound.Diagnostic Test: Echocardiography.Diagnostic Test: Blood sampling.

Group "CIED Replace" (B)

50 patients with cardiac implantable electronic device implantation 6-12 years ago (single- or dual-chamber system).

Procedure: Cardiac implantable electronic device replace.Diagnostic Test: Duplex ultrasound.Diagnostic Test: Echocardiography.Diagnostic Test: Blood sampling.

Group "Conservative" (C)

50 patients with atrioventricular block/sick sinus syndrome/atrial fibrillation and without indications for cardiac implantable electronic device implantation (conservative group).

Diagnostic Test: Duplex ultrasound.Diagnostic Test: Echocardiography.Diagnostic Test: Blood sampling.

Interventions

Patients who have indications will receive cardiac implantable electronic device implantation.

Group "Dual-chamber CIED + Atrial fibrillation" (A3)Group "Dual-chamber CIED" (A2)Group "Single-chamber CIED" (A1)

Patients who have indications will receive cardiac implantable electronic device replace.

Group "CIED Replace" (B)
Duplex ultrasound.DIAGNOSTIC_TEST

Patients will undergo ultrasound examination of the vessels of the upper and lower extremities.

Group "CIED Replace" (B)Group "Conservative" (C)Group "Dual-chamber CIED + Atrial fibrillation" (A3)Group "Dual-chamber CIED" (A2)Group "Single-chamber CIED" (A1)
Echocardiography.DIAGNOSTIC_TEST

Patients will undergo an ultrasound examination of the heart.

Group "CIED Replace" (B)Group "Conservative" (C)Group "Dual-chamber CIED + Atrial fibrillation" (A3)Group "Dual-chamber CIED" (A2)Group "Single-chamber CIED" (A1)
Blood sampling.DIAGNOSTIC_TEST

Patients will be taken venous blood to determine the studied markers of hemostasis system.

Group "CIED Replace" (B)Group "Conservative" (C)Group "Dual-chamber CIED + Atrial fibrillation" (A3)Group "Dual-chamber CIED" (A2)Group "Single-chamber CIED" (A1)

Eligibility Criteria

Age40 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)
Sampling MethodNon-Probability Sample
Study Population

Patients undergoing treatment in cardiology and cardiac surgery departments who have an implanted cardiac implantable electronic device or have indication/no indication for cardiac implantable electronic device implantation.

You may qualify if:

  • for group A1-3: atrioventricular block/sick sinus syndrome/atrial fibrillation with impaired conduction as indications for cardiac implantable electronic device implantation;
  • for group B: atrioventricular block/sick sinus syndrome/atrial fibrillation with impaired conduction and cardiac implantable electronic device implanted 6-12 years ago;
  • for group C: atrioventricular block/sick sinus syndrome/atrial fibrillation with impaired conduction without indications for cardiac implantable electronic device implantation.

You may not qualify if:

  • active cancer or a remission period of less than 5 years;
  • decompensated somatic pathology;
  • pregnancy or breastfeeding in women.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Ryazan State Medical University

Ryazan, Ryazan Oblast, Russia

Location

Related Publications (1)

  • Kalinin RE, Suchkov IA, Shitov II, Mzhavanadze ND, Povarov VO. [Venous thromboembolic complications in patients with cardiovascular implantable electronic devices]. Angiol Sosud Khir. 2017;23(4):69-74. Russian.

    PMID: 29240058BACKGROUND

MeSH Terms

Conditions

ThromboembolismCardiovascular DiseasesHemostatic DisordersArrhythmias, CardiacAtrial Fibrillation

Interventions

Ultrasonography, Doppler, DuplexEchocardiographyBlood Specimen Collection

Condition Hierarchy (Ancestors)

Embolism and ThrombosisVascular DiseasesHemorrhagic DisordersHematologic DiseasesHemic and Lymphatic DiseasesHeart DiseasesPathologic ProcessesPathological Conditions, Signs and Symptoms

Intervention Hierarchy (Ancestors)

Ultrasonography, DopplerUltrasonographyDiagnostic ImagingDiagnostic Techniques and ProceduresDiagnosisCardiac Imaging TechniquesHeart Function TestsDiagnostic Techniques, CardiovascularSpecimen HandlingClinical Laboratory TechniquesPuncturesSurgical Procedures, OperativeInvestigative Techniques

Study Officials

  • Igor A. Suchkov, MD, DSc

    Ryazan State Medical University

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
observational
Observational Model
COHORT
Time Perspective
PROSPECTIVE
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

July 24, 2020

First Posted

August 5, 2020

Study Start

March 1, 2020

Primary Completion

November 1, 2023

Study Completion

November 1, 2023

Last Updated

November 18, 2023

Record last verified: 2022-10

Locations