Abstract

Transoesophageal echocardiography (TOE) is feasible in neonates using a miniaturized probe, but is not widely used because of low imaging quality. To assess handling and imaging quality of a new release of a micro-TOE probe in children. Thirty-eight consecutive children, enrolled during February and May 2013, underwent TOE with the Philips S8-3t probe. Insertion, handling and image quality were assessed. The 38 children (aged 7days to 12years; weight 3.1-27kg) underwent 75TOE (30 [40.0%] before cardiac surgery, 31 [41.3%] after cardiac surgery, 4 [5.3%] during a percutaneous procedure, 10 [13.3%] in the intensive care unit). Insertion of the micro-TOE probe was 'very easy' in 37/38 patients (97.4%). Handling was better in the lightest children (P=0.001). Image quality was mainly 'good' or 'very good', with no significant changes between preoperative and postoperative examinations or over time. Total scores (insertion, handling, image quality) were significantly better in the lightest children (P=0.02). Preoperative TOE did not provide additional information over transthoracic echocardiography. Postoperative TOE was useful to assess surgical results, but no residual lesions required extracorporeal circulation return. Micro-TOE was useful during the postoperative care of neonatal surgery with open breastbone to assess the surgical result and ventricular function. It was also useful to guide extracorporeal membrane oxygenation (ECMO) indication and withdrawal; and was a useful guide for percutaneous procedures. Micro-multiplane TOE is safe and efficient for use in neonates and children. This minimally invasive tool increases the impact of TOE in paediatric cardiology.

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