It was reported a pericardial effusion was occurred.During a procedure, which a non-boston scientific soundstar map was made and a coronary sinus map using the non-boston scientific catheter.An unknown boston scientific transseptal puncture needle was selected for use.A non-boston scientific mapping catheter and transseptal puncture needle and non-boston scientific wire were used and the transseptal puncture was performed.The needle was inserted in the left atrium prior to sheath or catheter going transseptal.When the needle was being replaced by a non-boston scientific sheath, a pericardial effusion was noted.The transseptal wire was removed and protamine was given.The patient became hypotensive.A pericardiocentesis was performed and 800cc of fluid was withdrawn.The patient was stabilized and fully recovered.The device is not expected to be returned for analysis.Later, it was reported that no transseptal puncture was performed and the adverse event was discovered after the boston scientific needle was inserted into the left atrium prior to the non-boston scientific sheath going transseptal.No catheter or sheath crossed the septum.No oblation catheters were inserted into the body of the patient.The patient has fully recovered.Medwatch report# mw5150931.
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