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Updated: Sep 21, 2025
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Monitoring the Wall Mechanics During Stent Deployment in a Vessel
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Longitudinal Stent Deformation in Undeployed Stents: A Case Series
Parminder Singh Otaal1, Dinakar Bootla1
1Advanced Cardiac Centre, Post Graduate Institute of Medical Education and Research, Chandigarh, India.
The Journal of Tehran Heart Center
|May 31, 2022
Summary
Newer stents may experience longitudinal stent deformation (LSD), even before deployment. Recognizing and retrieving these deformed stents is crucial to prevent potential cardiac events.
Area of Science:
- Cardiovascular Devices
- Interventional Cardiology
- Biomedical Engineering
Background:
- Newer stent designs prioritize deliverability and conformability, potentially compromising longitudinal strength.
- Increased stent radiopacity and improved imaging have heightened awareness of stent issues.
- Longitudinal Stent Deformation (LSD) is an emerging concern in coronary interventions.
Observation:
- LSD, initially observed in deployed stents, is now also recognized in undeployed stents.
- Three cases of LSD in undeployed stents are presented, highlighting recognition challenges.
- Deformed undeployed stents pose a retrieval challenge, necessitating specific techniques.
Findings:
- Deformed stents, whether deployed or undeployed, are associated with adverse cardiac events.
- Retrieval of undeployed deformed stents is considered justified due to potential risks.
- Successful retrieval and intervention were achieved using a double guide technique.
Implications:
- Early recognition and management of LSD in undeployed stents are vital.
- Further research into stent design modifications to prevent LSD is warranted.
- Standardized protocols for managing undeployed deformed stents may be required.
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