TY - JOUR
T1 - Recurrent events after percutaneous closure of patent foramen ovale
AU - Wallenborn, Julia
AU - Bertog, Stefan C.
AU - Franke, Jennifer
AU - Steinberg, Daniel H.
AU - Majunke, Nicolas
AU - Wilson, Neil
AU - Wunderlich, Nina
AU - Sievert, Horst
PY - 2013/10/1
Y1 - 2013/10/1
N2 - Objectives To determine the incidence of symptomatic recurrent embolic events after patent foramen ovale (PFO) closure and potential causes for these events. Background It is well-known that cerebral or other embolic events may occur after PFO closure. Methods This is a retrospective analysis of consecutive patients who underwent PFO closure for secondary prevention of embolic events at a single institution. Results 1,930 patients (mean age of 50 ± 13.3 years) underwent transcatheter PFO closure. Complete closure occurred in 92%. The annual recurrence rate of embolic events before PFO closure was 22.4% (785 events in 3,497 patient-years). During follow-up (mean 39 months), 63 recurrent events were documented: 25 strokes, 36 transient ischemic attacks (TIAs), and 2 peripheral embolic events. The overall annual recurrence rate after the procedure was 1% per year (63 events in 6,211 patient-years). The majority of events occurred in patients without residual shunts (54/63). There was no significant association between the presence of a residual shunt and recurrent events [hazard ratio (HR) 1.7; 95% confidence interval (CI) 0.8-3.6, P = 0.16]. The most common cause for recurrent events was atherosclerosis. Nine out of 63 events were considered likely or possible paradoxical embolism due to residual shunt [stroke (2), TIA (5), and peripheral embolism (2)]. After PFO closure, the annual rate of events potentially related to paradoxical embolism was 0.14% (9 events in 6,211 patient-years). Conclusion The incidence of symptomatic embolic events after PFO closure is low. Most recurrent events are related to coexistent conditions associated with thromboembolic risk rather than residual shunts.
AB - Objectives To determine the incidence of symptomatic recurrent embolic events after patent foramen ovale (PFO) closure and potential causes for these events. Background It is well-known that cerebral or other embolic events may occur after PFO closure. Methods This is a retrospective analysis of consecutive patients who underwent PFO closure for secondary prevention of embolic events at a single institution. Results 1,930 patients (mean age of 50 ± 13.3 years) underwent transcatheter PFO closure. Complete closure occurred in 92%. The annual recurrence rate of embolic events before PFO closure was 22.4% (785 events in 3,497 patient-years). During follow-up (mean 39 months), 63 recurrent events were documented: 25 strokes, 36 transient ischemic attacks (TIAs), and 2 peripheral embolic events. The overall annual recurrence rate after the procedure was 1% per year (63 events in 6,211 patient-years). The majority of events occurred in patients without residual shunts (54/63). There was no significant association between the presence of a residual shunt and recurrent events [hazard ratio (HR) 1.7; 95% confidence interval (CI) 0.8-3.6, P = 0.16]. The most common cause for recurrent events was atherosclerosis. Nine out of 63 events were considered likely or possible paradoxical embolism due to residual shunt [stroke (2), TIA (5), and peripheral embolism (2)]. After PFO closure, the annual rate of events potentially related to paradoxical embolism was 0.14% (9 events in 6,211 patient-years). Conclusion The incidence of symptomatic embolic events after PFO closure is low. Most recurrent events are related to coexistent conditions associated with thromboembolic risk rather than residual shunts.
KW - patent foramen ovale
KW - percutaneous closure
KW - stroke
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U2 - 10.1002/ccd.24511
DO - 10.1002/ccd.24511
M3 - Article
C2 - 22707325
AN - SCOPUS:84885018436
SN - 1522-1946
VL - 82
SP - 541
EP - 546
JO - Catheterization and Cardiovascular Interventions
JF - Catheterization and Cardiovascular Interventions
IS - 4
ER -