It was reported that during a cryo ablation procedure, after pulmonary vein isolation and ablations were performed on the posterior wall, a radiofrequency catheter was used to isolate the rest of the posterior wall and then lateral mitral line ablation was performed.During the mitral line ablation, the patient¿s blood pressure dropped.An echocardiogram was performed, a pericardial effusion was observed, and tamponade occurred.A pericardiocentesis was performed to remove blood from the pericardial space.The bleeding in the pericardial space continued and it was noted that more 2500 milliliters of blood was removed.The patient was under general anesthesia and the case was aborted.It was determined that the patient required open heart surgery to repair a hole in the left atrium and to remove clotted blood in the pericardial space.The surgery was completed, and the patient was doing well.The patient required extended hospitalization.The physician surmised that a steam pop from the radiofrequency portion of the procedure caused the perforation in the lateral wall.No further patient complications have been reported as a result of this event.
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Product event summary: the data files were returned and analyzed.Patient data files showed at least 19 applications were performed with non-returned balloon catheter without any issue on the date of the event.In conclusion, the reported clinical issues for blood pressure, pericardial effusion, tamponade, and perforation occurred during the procedure and the decision to abort the procedure was based upon the medical judgment of the physician.There is no indication of a relation of the adverse event to the performance and malfunction of the product.Medtronic is submitting this report to comply with fda reporting regulations under 21 cfr parts 4 and 803.This report is based upon information obtained by medtronic, which the company may not have been able to fully investigate or verify prior to the date the report was required by the fda.Medtronic has made reasonable efforts to obtain more complete information and has provided as much relevant information as is available to the company as of the submission date of this report.This report does not constitute an admission or a conclusion by fda, medtronic, or its employees that the device, medtronic, or its employee caused or contributed to the event described in the report.In particular, this report does not constitute an admission by anyone that the product described in this report has any ¿defects¿ or has ¿malfunctioned¿.These words are included in the fda 3500a form and are fixed items for selection created by the fda to categorize the type of event solely for the purpose of regulatory reporting.Medtronic objects to the use of these words and others like them because of the lack of definition and the connotations implied by these terms.This statement should be included with any information or report disclosed to the public under the freedom of information act.Any required fields that are unpopulated are blank because the information is currently unknown or unavailable.A good faith effort will be made to obtain the applicable information relevant to the report.If information is provided in the future, a supplemental report will be issued.
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