Zusammenfassung
Systemvenöse Kollateralgefäße werden häufig nach Glenn- oder modifizierter Fontan-Operation beobachtet. Therapie der Wahl zum Verschluss kleinkalibriger Gefäße ist die Embolisation mit Hilfe von replatzierbaren Metallspiralen. Etwas problematischer ist die Situation bei Patienten mit großen Kollateralen wie z. B. einer rekanalisierten bilateralen oberen Hohlvene. Wir berichten über zwei Patienten, bei denen mehrere Jahre nach Fontan-Operation bei zunehmender Zyanose eine rekanalisierte linke bzw. rechte obere Hohlvene diagnostiziert wurde. Bei beiden Patienten gelang der interventionelle Verschluss dieser großlumigen Venen mittels 8 mm Amplatzer®-Muscular-VSD-Occluder, die arteriellen Sauerstoffsättigungen stiegen bei beiden Patienten postinterventionell an.
Schlussfolgerung
Der Verschluss rekanalisierter oberer Hohlvenen nach Fontan’scher Kreislauftrennung ist mittels Amplatzer®-Muscular-VSD-Occluder technisch ohne Probleme möglich. Um die erneute Formation von venovenösen Kollateralen zu vermeiden muss darauf geachtet werden, dass der Okkluder in die V. cava knapp unterhalb der Mündung der V. azygos/hemiazygos platziert wird.
Summary
Formation of systemic to pulmonary venous or systemic venous left atrial collaterals frequently occurs in patients after Glenn or Fontan-type operations. Embolization with detachable metal coils is the therapy of choice for the closure of small vessels. These devices however are not appropriate for the occlusion of large collaterals, e. g. recanalised bilateral caval veins. We report two patients who presented late after Fontan-type operations with a gradual decrease in oxygen saturation due to recanalisation of bilateral caval veins. Interventional closure of these large veins was carried out successfully with the use of 8 mm Amplatzer® muscular VSD Occluders, resulting in an increase of arterial oxygen saturations.
Conclusion
The closure of recanalised bilateral superior caval veins after Fontan procedures is possible without technical problems by means of the Amplatzer® muscular VSD Occluder. In order to avoid future formation of venous collaterals via the azygos or hemiazgos system, the occluder should be placed in the vena cava below the orifice of the azygos/ hemiazygos vein.
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Girisch, M., Sieverding, L., Rauch, R. et al. Recanalisation of bilateral superior vena cava after total cavopulmonary connection. ZS Kardiologie 94, 469–473 (2005). https://doi.org/10.1007/s00392-005-0250-1
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DOI: https://doi.org/10.1007/s00392-005-0250-1