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Pulmonary artery banding: long-term telemetric adjustment

Corno, Antonio F. ; Sekarski, Nicole ; Bernath, Marc-André ; Payot, Maurice ; Tozzi, Piergiorgio ; von Segesser, Ludwig K.

In: European Journal of Cardio-Thoracic Surgery, 2003, vol. 23, no. 3, p. 317-322

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    Titre
    • Pulmonary artery banding: long-term telemetric adjustment
    Auteur
    • Corno, Antonio F.. Cardiovascular Surgery, Centre Hospitalier Universitaire Vaudois (CHUV), 46 rue du Bugnon, CH-1011, Lausanne, Switzerland
    • Sekarski, Nicole. Pediatric Cardiology, Centre Hospitalier Universitaire Vaudois (CHUV), Lausanne, Switzerland
    • Bernath, Marc-André. Anaesthesia, Centre Hospitalier Universitaire Vaudois (CHUV), Lausanne, Switzerland
    • Payot, Maurice. Pediatric Cardiology, Centre Hospitalier Universitaire Vaudois (CHUV), Lausanne, Switzerland
    • Tozzi, Piergiorgio. Cardiovascular Surgery, Centre Hospitalier Universitaire Vaudois (CHUV), 46 rue du Bugnon, CH-1011, Lausanne, Switzerland
    • von Segesser, Ludwig K.. Cardiovascular Surgery, Centre Hospitalier Universitaire Vaudois (CHUV), 46 rue du Bugnon, CH-1011, Lausanne, Switzerland
    Type de document
    • Postprint
    Langue
    • Anglais
    Publié dans
    • European Journal of Cardio-Thoracic Surgery, 2003, vol. 23, no. 3, p. 317-322. Elsevier Science B.V.
    Autre version électronique
    Identifiant OAI-PMH
    • oai:doc.rero.ch:292227
    Summary
    Objective: Adjustment of pulmonary blood flow is difficult in pulmonary artery banding for complex congenital heart defects. A new wireless, battery free, telemetrically controlled, implantable device (FloWatch®, EndoArt, S.A., Lausanne, Switzerland) allowing for progressive occlusion/reopening of the device through a remote control at the wanted percentage of occlusion (adjustable pulmonary artery banding) underwent experimental evaluation. Methods: Eleven mini-pigs underwent FloWatch® implantation around the main pulmonary artery through left thoracotomy. The first group (n=4), mean age 18.2±0.1 weeks, mean body weight 12.0±0.1 kg, underwent FloWatch® implantation as device tolerance test. The second group (n=7), mean age 8.6±3.4 weeks, mean body weight 5.1±1.5 kg, underwent functional evaluation: at implantation, 1, 3, 5, 8 and 10 weeks after implantation, the device was progressively occluded and reopened, with Doppler evaluation of the developed pressure gradient. Results: The four mini-pigs of first group were sacrificed at mean age of 42.3±0.1 weeks, mean body weight 25.1±3.2 kg (mean interval of 24 weeks after implantation); the device was still functioning and histology revealed almost normal morphology of the pulmonary artery. In all seven mini-pigs of second group the possibility of narrowing/releasing the pulmonary artery was confirmed at implantation and during follow-up: at last control their mean age was 20.5±2.8 weeks and the body weight 12.7±3.7 kg. Conclusions: Complete adjustment of pulmonary blood flow is now possible with an implantable device allowing for pulmonary artery banding with early and late telemetric flow control