Radiographs of the device. (Left) Immediate post-implantation films. Neither film shows the full extent of the device. The generator header can be seen facing anteriorly and level with the posterior heart border on the lateral film. Bilateral lower zone atelectasis is seen. (Right) Films following inappropriate shocks. The postero-anterior film (top right) shows preserved lead electrode position; the change in lead slack is not immediately obvious but the projection of the lead has changed from mid-generator to high on the generator. The lateral film confirms rotation and posterior displacement of the device, with a significant reduction in lead slack. The atelectasis seen on the first films has resolved.