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During the atrial fibrillation procedure, the sheath was inserted into the right atrium.Before septal puncture and catheter insertion, when negative pressure was applied for flushing, air was aspirated, and blood leaked from the hemostasis valve.The sheath was replaced, and the procedure was completed with no adverse consequences to the patient.No air movement into the patient was confirmed.The only products inserted directly into the hemostasis valve was the included dilator.No additional venipuncture was performed due to sheath replacement.There was no resistance when inserting the dilator.The sheath and dilator were integrated and inserted as per the procedure.The hospital discarded the reported sheath.
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