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Related Concept Videos

Venous Thrombosis I: Introduction01:30

Venous Thrombosis I: Introduction

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Venous thrombosis, the most common disorder of the veins, involves the formation of a thrombus or blood clot associated with vein inflammation. It can be classified as either superficial vein thrombosis or deep vein thrombosis.Superficial Vein Thrombosis: This involves the formation of a thrombus in a superficial vein, usually the greater or lesser saphenous vein. Though less severe than deep vein thrombosis (DVT), SVT can lead to complications if untreated.Deep Vein Thrombosis (DVT): This...
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Venous Thrombosis III: Interprofessional Care01:29

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Venous thrombosis requires effective prevention and treatment strategies to improve patient outcomes and reduce potential complications.Prevention StrategiesHealthcare providers must prioritize preventing venous thromboembolism (VTE) for all adult patients upon admission. Interventions depend on bleeding and thrombosis risk, medical history, current medications, diagnoses, planned procedures, and patient preferences. Patients on bed rest should change positions every two hours and, if not...
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Pulmonary Embolism I: Introduction01:29

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Pulmonary embolism (PE) occurs when a thrombus, fat or air embolus, amniotic fluid, or tumor tissue blocks one or more pulmonary arteries. These blockages originate in the venous system or the right side of the heart.EtiologyPE primarily arises from deep vein thrombosis (DVT) and other hypercoagulable states, such as inherited thrombophilias. Additional etiological factors include venous stasis, commonly seen in obesity, and endothelial injury from surgery and trauma. Less common causes include...
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Pulmonary Embolism II: Diagnostic Studies and Interprofessional Care01:29

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Diagnosing Pulmonary EmbolismDiagnosing pulmonary embolism (PE) involves clinical assessment and advanced imaging tests. The preferred diagnostic tool is the spiral (helical) CT scan or CT angiography (CTA), which uses intravenous contrast media to visualize the pulmonary vasculature and identify emboli.A ventilation-perfusion (V/Q) scan is an alternative for patients unable to receive contrast media. This scan includes both perfusion and ventilation scanning. Perfusion scanning involves...
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A pulmonary embolism occurs when a thrombus, amniotic fluid, tumor tissue, fat, or air embolus blocks one or more pulmonary arteries. Effective nursing management and patient education are crucial for improving outcomes and preventing recurrence.Nursing management starts with obtaining a comprehensive patient history, particularly noting any history of deep vein thrombosis (DVT). Assess for clinical manifestations, including dyspnea, chest pain, crackles, heart murmurs, and signs of right-sided...
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After a fibrin clot is formed, the next step is clot retraction, a vital process facilitated by platelet contractile proteins, such as actin and myosin. These proteins pull the fibrin strands closer together and condense the clot. This action reduces the size of the clot, creating a smaller, denser structure that effectively seals off the damaged vessel. Clot retraction consolidates the clot and helps with wound healing by bringing the edges of the damaged blood vessel closer together.
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Thrombus Formation During Pulmonary Vein Ablation: When Routine Turns Risky.

Álvaro Barranco de Santiago1, Mireia Pozo-Albiol1, Samira Martínez-Otero1

  • 1Department of Anesthesiology and Critical Care, Hospital Clínic de Barcelona, University of Barcelona, Barcelona, Spain.

Annals of Cardiac Anaesthesia
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Summary

Intraprocedural catheter thrombosis during atrial fibrillation ablation is rare but serious. Early detection with intraoperative transesophageal echocardiography (iTEE) and uninterrupted anticoagulation are crucial for patient safety.

Keywords:
Anticoagulationatrial fibrillationechocardiographyprocedural complicationspulmonary vein ablation

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Area of Science:

  • Cardiology
  • Medical Imaging
  • Interventional Electrophysiology

Background:

  • Atrial fibrillation (AF) is a common arrhythmia linked to thromboembolic events.
  • Pulmonary vein isolation is a primary treatment for AF rhythm control.
  • Intraoperative transesophageal echocardiography (iTEE) aids procedural safety in AF ablation.

Purpose of the Study:

  • To report a rare case of intraprocedural catheter thrombosis during AF ablation.
  • To highlight the role of iTEE in detecting this complication.
  • To emphasize the importance of anticoagulation management in AF ablation.

Main Methods:

  • A case report of a 59-year-old male patient with paroxysmal AF undergoing redo pulmonary vein ablation.
  • Utilized iTEE for procedural guidance and complication surveillance.
  • Managed anticoagulation status, including interruption and subsequent uninterrupted use.

Main Results:

  • iTEE identified a large thrombus on the ablation catheter after transseptal puncture due to interrupted anticoagulation.
  • Procedure was postponed, and the patient recovered without complications.
  • Successful redo ablation was performed 4 weeks later under uninterrupted anticoagulation.

Conclusions:

  • Intraprocedural catheter thrombosis is a rare, potentially life-threatening complication of AF ablation.
  • iTEE is vital for early detection and procedural guidance.
  • Uninterrupted anticoagulation is essential for mitigating thromboembolic risk during AF ablation.