Under fluoroscopic guidance (live X–rays that can be viewed on a monitor), the provider introduces a catheter into a vessel in the dialysis circuit and extracts a blood clot (hematoma) with special instruments (thrombectomy) and/or injects a drug to dissolve the clot (pharmacological thrombolytic injection); he also finds a narrowed segment in the outer area of the circuit, which he dilates and opens up using a balloon expanded within the vessel lumen (channel). The procedure includes diagnostic angiography and radiological supervision and interpretation.
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