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Mother-child aspiration technique
Takeshi Yamada1, Yukio Mizuguchi, Norimasa Taniguchi
1Department of Cardiology, Sakurakai Takahashi Hospital.
Insights
This study introduces a novel double aspiration technique using a mother-child catheter system for effective thrombus removal during percutaneous coronary intervention. This method enhances clot aspiration and reduces the risk of embolic complications.
Area of Science:
- Interventional Cardiology
- Vascular Surgery
Background:
- Percutaneous coronary intervention (PCI) is a standard treatment for acute coronary syndromes.
- Complete thrombus aspiration remains a challenge in complex coronary occlusions.
Observation:
- A novel dual aspiration technique was employed using a mother-child catheter system during PCI for right coronary artery occlusion.
- Initial aspiration with a conventional catheter yielded minimal thrombus; subsequent dual aspiration successfully removed significant thrombus.
Findings:
- The mother-child catheter technique, involving simultaneous aspiration through both inner and outer catheters, proved effective in removing large thrombi.
- This method prevented thrombus dislodgement at the guiding catheter tip, mitigating risks of systemic embolism.
Implications:
- The described double aspiration technique offers a simple yet effective strategy for improving thrombus removal in PCI.
- This approach may enhance procedural success rates and patient outcomes in cases of complex coronary thrombus.
- Further research may validate this technique as a valuable tool in interventional cardiology practice.
Abstract:
A 94-year-old woman underwent primary percutaneous coronary intervention for a total occlusion of the right coronary artery. A 6-Fr Ikari-left guiding catheter was inserted through the right radial artery. Initially, thrombectomy was performed with a conventional thrombus aspiration catheter. However, only small fragments of thrombus were aspirated and coronary blood flow was still obstructed. Subsequently, a 4.5-Fr straight guiding catheter was advanced through the 6-Fr guiding catheter into the coronary artery and aspiration was reinitiated. During the course of aspiration, the backflow of the blood was blocked. The inner catheter was pulled back slowly, maintaining suction. Just before it reached the tip of the 6-Fr guiding catheter, another vacuum syringe was attached to the side arm of the Y-connecter of the 6-Fr guiding catheter and additional aspiration with the outer guiding catheter was started. After complete retrieval of the 4.5-Fr catheter from the guiding catheter, thrombus was found in the vacuum syringes from both inner and outer guiding catheters. We consider that this double aspiration, with a mother-child catheter technique, is a simple and effective means of aspirating a larger thrombus, and may prevent the dislodgement of thrombus at the tip of the outer guiding catheter, which could cause systemic embolism.