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Alpha-Loop Snaring Technique: Facilitated Snaring Technique for Fully-Deployed and Deformed Coronary Stent Protruding
Michael Chiang1, Ka Chun Alan Chan, Chi Yuen Eric Wong
1Cardiology Division, Department of Medicine, Queen Elizabeth Hospital, 30 Gascoigne Road, Kowloon, Hong Kong. michaelcschiang@gmail.com.
Insights
A novel alpha-loop snaring technique successfully retrieved a dislodged coronary stent, preventing serious complications like stent embolization. This method offers a new solution for challenging stent retrieval procedures in interventional cardiology.
Area of Science:
- Interventional Cardiology
- Cardiovascular Medicine
- Medical Device Technology
Background:
- A 59-year-old female presented with non-ST-segment elevation myocardial infarction and severe heart failure (Killip class 3).
- Coronary angiography revealed significant stenosis in the left anterior descending artery, necessitating intervention.
Observation:
- During stent placement, a complication arose where the deployed stent protruded significantly and became weakened during attempted retrieval.
- The protruding stent risked breakage and embolization into the aorta, posing a critical threat to the patient.
Findings:
- A novel "alpha-loop snaring technique" was successfully employed to retrieve the dislodged and weakened coronary stent.
- This technique salvaged a failing retrieval attempt, preventing catastrophic complications.
Implications:
- The alpha-loop snaring technique represents a potentially life-saving, first-in-kind approach for managing dislodged coronary stents.
- This method expands the toolkit for interventional cardiologists facing complex stent retrieval scenarios.
- Successful application highlights the importance of innovative techniques in managing procedural complications during percutaneous coronary interventions.
Abstract:
A 59-year-old female was admitted for non-ST-segment elevation myocardial infarction and Killip class 3 heart failure with a left ventricular ejection fraction of 30%. Coronary angiogram showed moderate to severe stenosis over the ostial-proximal left anterior descending artery with minor disease over the left circumflex artery and right coronary artery. We describe a complication encountered where a protruding stent was weakened and elongated during our attempts to remove it, risking possible breakage, stent embolization, and long stent protrusion inside the aorta. We then describe treatment with what we call the alpha-loop snaring technique, which, to our knowledge, is the first report describing this novel approach, which can salvage a failing snaring attempt of a completely deployed and dislodged coronary stent.
