Browsing by Author "Senanayake, K."

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Arsenic and hardness in ground water from Chronic Kidney Disease of Unknown Etiology (CKDU) prevalent areas and non-CKDU prevalent areas in Sri Lanka
(Postgraduate Institute of Science, University of Peradeniya, 2012) Fonseka, S.; Jayasumana, C.; Jayalath, K.; Amarasinghe, M.; Senanayake, K.; Wijewardhane, C.; Samarasinghe, D.; Dahanayake, K.; Mahamithawa, P.; Paranagama, P.A.
Increasing hardness and deteriorating quality of groundwater, the primary source of potable water, has been the general observation of inhabitants of areas where chronic kidney disease of unknown etiology (CKDu) is prevalent. Present study was conducted during 2011, to determine the groundwater hardness and presence of arsenic in Padavi- Sripura, Polpithigama, Moneragala, Thanamalwila in the dry climatic zone and in Pasagoda in the wet zone. Total hardness of the water samples collected from dug wells and tube wells was measured using EDTA titration (EPA 130.2) and arsenic content was measured using GF-AAS after filtration and acid digestion (EPA 7060A). Highest average groundwater hardness (466+34 mg l-1) was observed at Padavi-Sripura (n= 28) and the values ranged from 270+54 – 820+62 mg l-1). Arsenic content in water ranged from 21.07+3.54 to more than 100.91+12.31 !" #-1. The second most hardwater was found from Polpithigama area (n= 16) which ranged 90+8 – 615+47 mg l-1. Arsenic content in water ranged 2.49+0.61 – 60.55+7.21 !" #-1. The lowest hardness in groundwater among the test sites was observed at Moneragala (n=38), where the hardness ranged 10+2 – 340+31. The arsenic content ranged 2.14+0.84 – 52.47+6.71 !"#-1. Groundwater at Thanamalwila (n=19) recorded hardness value, i.e. 279+26 mg l- 1-with a range 170+8 - 500+24 mg l-1 and the arsenic content in water ranged 39.37+5.21- >100.42+9.45 !" #-1. Groundwater at Pasgoda, the control site of this study, was not hard (60+5 mg l-1) and arsenic was not detected. Statistical analyses reveal that a positive correlation exists between total hardness of groundwater and the arsenic content in it.
Determination of Arsenic Content in Synthetic and Organic Manure Based Fertilizers Available in Sri Lanka
(International Conference on Chemical Sciences, 2012) Fernando, A.; Paranagama, P.A.; Jayalath, K.; Fonseka, S.; Amarasinghe, M.D.; Senanayake, K.; Jayasumana, C.; Mahamithawa, P.; Wijewardhane, C.; Samarasinghe, D.; Dahanayake, K.S.
Views of patients admitted to professorial units of Colombo North Teaching Hospital, regarding issues related to personal space and privacy during clinical training in of medical students
(Faculty of Medicine, University of Kelaniya, Sri Lanka, 2021) Senanayake, K.
Introduction: Medical students acquire clinical competency through training in wards. Cooperation of patients is the key for successful clinical training. In Sri Lanka, most patients are supportive towards medical students. However, it is importantly to the know feelings of patients about their personal space and privacy been invaded by students. Objectives: To describe how patients admitted to professorial units of North Colombo Teaching Hospital feel about their personal space and privacy been invaded by medical students during clinical training. Methods: A descriptive cross-sectional study was conducted between 11.01.2021 to 25.01.2021, involving 384 patients. Stratified sampling according to the percentage of admissions to each unit, was employed to select the study population. Patients were asked about their feelings during interactions with medical students. Data collection was via telephone interviews, using an interviewer administrated questionnaire. Results: There were 51.8% females and 48.2% males. 86.9% had no concerns about students asking their personal information. 83.5% felt comfortable about students observing, when doctors examined them. 82.03% did not feel embarrassed when genitalia were examined by a student of the same gender, but when it was the opposite gender, only 67.71% felt comfortable. 88.02% didn’t mind a student’s performing clinical procedures, if supervised by an experienced person. Only 75.78% felt comfortable with medical students assisting during surgeries. Conclusions: Attitude of most patients was positive towards medical students. However, some had concerns about students performing procedures, assisting surgeries and examining genitalia. It is important for students to respect the personal space and privacy of patients.