Medicine
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This repository contains the published and unpublished research of the Faculty of Medicine by the staff members of the faculty
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Item Auditory brainstem response for Sri Lankan children under 5 years of age: Normativedata(College of Otorhinolaryngologists and Head and Neck Surgeons of Sri Lanka, 2021) Ileperuma, L.D.; Weerasinghe, V.S.; Wickremasinghe, A.R.Abstract For years Sri Lankan Audiologists resorted to western norms in the interpretation of Auditory Brainstem Response (ABR) in the absence of national standards. The study focused on establishing normative data on ABR for Sri Lankan children below 5 years. ABR was performed on 258 healthy children between 6 weeks and 5 years of age to gather data on absolute latencies and inter-peak latencies.All inter-aural differences were within 0.2-0.4ms. The mean inter-aural difference for the study sample was significantly small (-0.0204ms to 0.0286ms). Mean values of absolute latencies for waves I, III, V for the 6-week age group at 30dBnHL were 3.33 ms, 5.91 ms and 8.27 ms respectively. Mean values of inter-peak latencies of wave I-III, III-V, I-V were 2.08 ms, 2.36 ms and 4.76 ms respectively for the 6-week age group at 30 dBnHL. The normative ABR data obtained in this study may be used across audiology clinics in Sri Lanka as a baseline measurement to diagnose hearing loss among children from infancy to 5 years of age when children are tested in their natural sleep and insert earphones are used. The mean value plus 2 standard deviations for each ABR measure may be used as the upper limit cutoff values. Hence this study helps eliminate misdiagnosis and under-diagnosis of hearing loss in children.Item Nerve lesions in obstetrics and gynaecology(Sri Lanka College of Obstetricians and Gynaecologists, 2008) Weerasinghe, V.S.Nerves can be preferentially or equally damaged in pregnant or non-pregnant women when compared to men due to various reasons. Nerves affected could be sensory nerves, motor nerves or autonomic nerves. Common clinical features of nerve lesions are paraesthesia, pain, burning sensation, loss of sensation, weakness and wasting. Nerve lesions could cause demyelination or axonal degeneration. Neurophysiological tests that could detect nerve damage are nerve conduction tests and needle electromyography (EMG). Clinical presentation, neurophysiological diagnosis and principles of management of various nerve lesions will be discussed during the presentation. Carpal tunnel syndrome is a common disorder in middle aged females. It can also occur during pregnancy and after childbirth. Ulnar nerve lesion at the elbow, radial nerve lesion and thoracic outlet syndrome could occur at any age. Nerves comprising the brachial plexus could be affectedfollowingmastectomy.Meralgiaparaesthetica is not an uncommon disease causing severe distress to the patients. Peroneal, tibial and sciatic nerve lesions and lumbosacral root lesions could occur after childbirth, Metatarsalgia and tarsal tunnel syndrome couid also be present rarely in certain patients. Postpartum obturator nerve lesion could cause groin pain and weakness of thigh adductors. Guillain-Barre Syndrome and Bell's Palsy could affect pregnant women. It could be concluded that pregnant or non-pregnant women presenting with neurological signs and symptoms could be investigated appropriately and managed accordingly.