1.Extended-spectrum ß-Lactamase-producing Enterobacteriaceae as a Common Cause of Urinary Tract Infections in Sri Lanka.
L Gayani TILLEKERATNE ; Dhammika VIDANAGAMA ; Rashmi TIPPALAGAMA ; Rashmi LEWKEBANDARA ; Maria JOYCE ; Bradly P NICHOLSON ; Ajith NAGAHAWATTE ; Champica K BODINAYAKE ; Aruna Dharshan DE SILVA ; Christopher W WOODS
Infection and Chemotherapy 2016;48(3):160-165
BACKGROUND: Extended-spectrum ß-lactamase-producing Enterobacteriaceae (ESBL-PE) are increasingly reported as pathogens in urinary tract infections (UTIs). However, in Sri Lanka, the clinical and molecular epidemiology of ESBL-PE implicated in UTIs has not been well described. MATERIALS AND METHODS: We conducted prospective, laboratory-based surveillance from October to December 2013 at a tertiary care hospital in southern Sri Lanka and enrolled patients ≥1 year of age with clinically relevant UTIs due to ESBL-PE. Isolate identity, antimicrobial drug susceptibility, and ESBL production were determined. Presence of ß-lactamase genes, bla(SHV), bla(TEM), and bla(CTX-M), was identified by polymerase chain reaction. RESULTS: During the study period, Enterobacteriaceae were detected in 184 urine samples, with 74 (40.2%) being ESBL producers. Among 47 patients with ESBL-PE who had medical records available, 38 (80.9%) had clinically significant UTIs. Most UTIs (63.2%) were community acquired and 34.2% were in patients with diabetes. Among 36 cultured ESBL-PE isolates, significant susceptibility (>80%) was only retained to amikacin and the carbapenems. The group 1 bla(CTX-M) gene was present in 90.0% of Escherichia coli isolates and all Klebsiella pneumoniae and Enterobacter cloacae isolates. The bla(SHV) and bla(TEM) genes were more common in K. pneumoniae (75% and 50%) and E. cloacae (50% and 50%) isolates than in E. coli (10% and 20%) isolates, respectively. CONCLUSION: The majority of UTIs caused by ESBL-PE were acquired in the community and due to organisms carrying the group 1 CTX-M ß-lactamase. Further epidemiologic studies of infections due to ESBL-PE are urgently needed to better prevent and treat these infections in South Asia.
Amikacin
;
Asia
;
Carbapenems
;
Cloaca
;
Enterobacter cloacae
;
Enterobacteriaceae*
;
Epidemiologic Studies
;
Escherichia coli
;
Humans
;
Klebsiella pneumoniae
;
Medical Records
;
Molecular Epidemiology
;
Pneumonia
;
Polymerase Chain Reaction
;
Prospective Studies
;
Sri Lanka*
;
Tertiary Healthcare
;
Urinary Tract Infections*
;
Urinary Tract*
2.Organoaxial partial rotation of duodenum with midgut malrotation in an adult.
Luckshika Udeshani AMARAKOON ; Baj Gamage Anushka RATHNAMALI ; Jasin Arachchige Saman Bingumal JAYASUNDARA ; Ajith de SILVA
Singapore medical journal 2014;55(12):e191-3
Midgut malrotation includes a range of developmental abnormalities that occur during fetal intestinal rotation. Manifestations of intestinal malrotation are generally seen in the paediatric population and are uncommon in adults. Symptomatic patients may present with either acute abdominal pain due to midgut volvulus, or chronic abdominal pain due to proximal midgut partial obstruction in the presence of congenital bands. A limited number of paediatric cases of duodenal occlusion due to duodenal malrotation has been previously reported in the medical literature. We herein report the case of a 57-year-old woman who presented with duodenal obstruction due to organoaxial partial rotation of the distal duodenum associated with midgut malrotation. This is probably the first of such a case diagnosed in adulthood reported in the medical literature. Our patient underwent Roux-en-Y duodenojejunostomy and had symptomatic relief following the successful surgery.
Duodenal Obstruction
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congenital
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diagnosis
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surgery
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Duodenostomy
;
Duodenum
;
abnormalities
;
Female
;
Humans
;
Middle Aged
;
Sri Lanka
;
Treatment Outcome
3. Dengue fever may mislead the surgeons when it presents as an acute abdomen
Bingumal JAYASUNDARA ; Lalith PERERA ; Ajith DE SILVA ; Bingumal JAYASUNDARA ; Lalith PERERA
Asian Pacific Journal of Tropical Medicine 2017;10(1):15-19
Objective To review the management experience of a consecutive series of patients presenting as acute surgical abdomen whom were ultimately diagnosed to have DF (Dengue fever)/DHF (Dengue hemorrhagic fever). Methods Clinical data of all cases of apparent acute abdomen (AA) which were later confirmed as having DF/DHF reviewed by two surgical units from December 2012 to December 2013 were analyzed. Initially confirmed patients with DF/DHF who developed abdominal symptoms were not considered. Results Out of the seventeen cases (7 males, age range 10–71 years) presented with fever and AA; appendicitis, cholecystitis, pancreatitis and non-specific peritonitis were suspected initially in 8, 5, 1 and 3 cases, respectively. Neutropenia or thrombocytopenia signifying DF/DHF occurred only in 11 patients at first evaluation thus six remained as surgical candidates beyond 24 h. One patient underwent appendicectomy with a prolonged hospital stay. DF was confirmed by serology in all patients, latest by fourth day of admission. One required blood product transfusion, 4 needed critical care treatment and there was 1 death. Conclusions DF/DHF misleads the clinicians when it presents as AA. Initial hematological and ultrasonographic findings may be equivocal creating a diagnostic and management dilemma. Vigilant clinical suspicion and early dengue serological assessment is advisable in equivocal cases of AAs with fever in dengue endemic areas, to confirm/exclude the infection in order to avoid unnecessary surgical morbidity in the presence of DF.