The Thrombotic Potential of Heart Chambers in the Presence or Absence of

Status Completed

Clinical Trial Summary

The investigators aim to test the thrombotic potential of various heart chambers including left atrium, left atrial appendage, right atrium and peripheral veins. Blood samples will be taken from the different chambers in 50 patients admitted for standard pulmonary vein ablation and compared to patients without atrial fibrillation admitted for left sided supra ventricular tachycardia or mitral clip. Thrombin generation parameters will be assessed by the calibrated automated thrombogram.

Clinical Trial Description

Atrial fibrillation is the most common arrhythmia, there is a strong correlation between atrial fibrillation and embolic stroke. In order to lower the risk for embolic stroke anticoagulation is recommended for patients with CHADS-VASC score equal or above 2. The mechanism for thrombus formation in the left atrium is thought to be caused by various factors 1. blood stasis due to the loss of atrial kick 2. endothelial dysfunction 3. blood hemostatic alteration leading to procoagulant state. Previous studies demonstrated increased thrombin generation in the left atrium in patients with atrial fibrillation, when compared to other heart chambers and when compared to control group in patients with structurally normal heart. In recent years calibrated automated thrombogram (CAT) is considered a good indicator for total thrombotic activity in hypercoagulable states. In the current study the investigators aim to test the thrombotic potential of various heart chambers including left atrium, left atrial appendage, right atrium and peripheral veins. Blood samples will be taken from the different chambers in 50 patients admitted for standard pulmonary vein ablation without changing the course of the procedure. Thrombin generation parameters will be assessed by the calibrated automated thrombogram. A control group composed of 50 patients admitted for standard left sided supra ventricular tachycardia ablation or patients admitted to mitral clip procedure without the presence of atrial fibrillation. In addition demographic data,CHADS-VASC score, atrial fibrillation burden, echocardiographic and cardiac CT parameters will be collected. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details

NCT number	NCT03795883
Study type	Observational
Source	Rambam Health Care Campus
Contact
Status	Completed
Phase
Start date	February 1, 2019
Completion date	March 9, 2022

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Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.

The Thrombotic Potential of Heart Chambers in the Presence or Absence of Atrial Fibrillation.

Clinical Trial Summary

Clinical Trial Description

Study Design

Related Conditions & MeSH terms