Browsing by Author "Karunarathne, S."

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    Role of negative experiences in past relationships and adverse childhood experiences in morbid jealousy
    (Sri Lanka College of Psychiatrists, 2017) Karunarathne, S.; Liyanage, N.; Rodrigo, A.
    BACKGROUND : Morbid jealousy is a relatively common and disabling mental health entity. Psychological theories suggest experiences of being cheated-on in previous relationships and childhood experience of parents having or being accused of having extramarital relationships as aetiological factors of morbid jealousy. However this has not been studied adequately. METHOD : A retrospective case control study was conducted based on clinical records of patients admitted to the psychiatric unit in a tertiary care hospital in Sri Lanka over a 14 month period. Patients with morbid jealousy were considered as cases and those admitted with other psychiatric diagnoses were considered as controls. RESULTS : Of 2708 patients, 131 (4.8%) were identified to have morbid jealousy. In patients with morbid jealousy, a majority were males, average age was 42.8 years and schizophrenia was the commonest diagnosis. There was a statistical significant association between morbid jealousy and past experiences of being cheated-on or childhood experiences of parents having or being accused of having extra-marital relationships. DISCUSSION : Morbid jealousy was a common presentation. The significant association between morbid jealousy and above experiences could be due to a true association, recall or interpretation bias by patients with morbid jealousy, or more diligent exploration by clinicians when it comes to patient with morbid jealousy. Except for the last explanation, this association has treatment implications.
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    Vestibulo-ocular reflex gain for adults 20-30 years
    (Faculty of Medicine, University of Kelaniya, Sri Lanka, 2023) Fasra, M.F.F.; Karunarathne, S.; Dantanarayana, N.
    INTRODUCTION: Vestibular Ocular Reflex (VOR) is a critical visual component that ensures gaze stability during head movement, with counter eye movement due to activation of vestibular system. The video Head Impulse Test (vHIT) is an objective assessment of the VORfunction of the semicircular canals by measuring VOR gain. OBJECTIVE: To establish norms for the vestibulo-ocular reflex gain for healthy adults aged 20-30 years through the video head impulse test. Furthermore, the study analyzed the association of VOR gain with age and the asymmetry of VOR gain between ears. METHODS: 178 persons with normal peripheral hearing sensitivity and no known vestibular disorder were selected through convenient sampling. A series of testing in three stages was conducted along with an interviewer administered questionnaire. Instantaneous gain at 40 ms, 60 ms, 80 ms for both rightward and leftward rotations were used separately to analyze the data. RESULTS: The mean horizontal VOR velocity gain was 1.05(+0.195) for the right and 0.98(+0.191) for the left, at 40ms, 1.10(+0.146) for the right and 1.06(+0.13) for the left, at 60ms, 1.09 (+0.163) for the right and 1.08(+0.156) for the left, at 80 ms.No significant relationship was identified with age and VOR gain in either ear except for 80ms in the left ear (F=(1,153)= 4.97, p =0.03) which gradually decreased with the participants’ age and this linear relationship was significant. CONCLUSION: The horizontal VOR velocity gain remained around one in all tested subjects for both right and left, with a significant association only at 80ms with age among 20 -30 years. Established normative values permit the comparison of test results and identification of deviations in that age group.