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Cooling or Warming the Esophagus to Reduce Esophageal Injury During Left Atrial Ablation in the Treatment of Atrial Fibrillation
Published on: March 15, 2020
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Bronchial Injury - Yet Another Collateral Damage of Cryoablation.
Amit Rout1, Arjun Kanwal1, William Han2
1Department of Medicine, Sinai Hospital of Baltimore, Baltimore, MD, USA.
Journal of Atrial Fibrillation
|November 6, 2019
Summary
Cryoablation for atrial fibrillation can cause rare bronchial injury, presenting as cough and hemoptysis. Awareness of this complication is crucial for physicians using this novel pulmonary vein isolation technique.
Area of Science:
- Cardiology
- Pulmonology
- Medical Devices
Background:
- Atrial fibrillation (AF) burden increases with aging populations.
- Cryoablation is a pulmonary vein isolation (PVI) technique for AF, comparable in efficacy to radiofrequency ablation.
- Known cryoablation complications include phrenic nerve damage, esophageal injury, pulmonary vein stenosis, atrial flutter, pericardial effusion, and stroke.
Observation:
- A 67-year-old woman developed cough and hemoptysis post-cryoablation for symptomatic paroxysmal AF.
- The patient underwent PVI with an extended 3-minute freeze of the left inferior pulmonary vein.
- Bronchoscopy revealed erythema and blood in the left main bronchus.
Findings:
- The case presents a rare instance of bronchial injury following cryoablation.
- The likely cause is direct cryoenergy transfer to the bronchus due to anatomical proximity.
- Conservative management with cough suppressants and cessation of anticoagulation was effective.
Implications:
- Increased use of cryoablation for AF may lead to more reported cases of bronchial injury.
- Electrophysiologists and pulmonologists must be aware of this potential complication.
- This highlights the importance of careful cryoablation technique and monitoring for rare adverse events.
