OP17.01: Complex of Fallot is a more appropriate name for tetralogy of Fallot?

Abstract

Results: 94 neonates were identified who had undergone fetal MRI in Sheffield and who had completed NHSP assessment. 32 of these babies had been admitted to a neonatal intensive care unit (NICU) and there was one case of congenital bilateral deafness among them. The national incidence of congenital hearing impairment detected by the NHSP is approximately 0.1%, rising to around 3% in NICU graduates. The incidence detected in babies following fetal MRI was 1% (95% confidence interval 0.0-5.8%), which is in accordance with the incidence expected given the high proportion of NICU graduates. For babies who were not admitted to NICU, there was no significant difference between their mean OAE cochlear response and the mean of a reference dataset of over 2000 OAE results from healthy babies. Conclusion: This study finds no significant excess clinical risk of permanent congenital hearing impairment as a result of magnetic resonance imaging during pregnancy. In addition, there was no evidence of impairment of frequency-specific cochlear response in healthy newborn babies who had been exposed to magnetic resonance imaging in utero. OP16.11Ultrasound transducer disinfection -an examination of cleaning and disinfection practices for surface and intracavity transducers R. Weinberger Nanosonics, Alexandria, NSW, AustraliaObjectives: To examine the problems with current methods of cleaning and disinfection of ultrasound transducers, including the need for less toxic chemicals for cleaning (particularly in assisted reproductive ultrasound clinics) and identify areas of need within ultrasound transducer reprocessing. Method: The study examined efficacy levels of existing ultrasound transducer cleaning and disinfection procedures and the role of a new process. All ultrasound transducers used in the department were swabbed and samples were taken and assessed following the use of current cleaning and/or disinfection procedures. The same transducers were then cleaned again and high level disinfected utilising a new process, after which another sample was taken. The cables of all transducers were also swabbed. All samples were plated and analysed for bacterial growth. The growth in each phase of the probe cleaning and disinfection were compared and then sent for analysis to determine bacteria type. Results: This study showed bacteria growth on intracavity transducers and large bacteria growth on surface ultrasound transducers and all the associated cables, even following the use of current reprocessing methods. In comparison the new method of high level disinfection for surface and intracavity transducers (that provides disinfection of the entire probe and handle area) demonstrated no discernible growth from samples. Conclusion: This study demonstrates the need to review the classification system for what transducers require high level disinfection, most significantly in regards to surface transducers, the area of the transducer that is disinfected, the methods used for disinfection and also the cleaning and maintenance of the trans...

A complex tetralogy of Fallot case with an unusual cluster of malformations diagnosed by multiple prenatal ultrasound views

“…Complex tetralogy of Fallot (TOF) is classi ed into three main types, TOF with pulmonary artery atresia (PA), TOF with absence of pulmonary valve, and TOF with atrioventricular septal defect [1][2][3] . However, complex TOF is associated with many additional vascular malformations aside from these core features 3 . Some of these associated malformations are extremely rare, such as abnormal connections to the ductus arteriosus.…”