Tropical Doctor

Our prospective observational study, enrolling 167 patients undergoing emergency appendicectomy, served to evaluate the Alvarado, Tzanakis and RIPASA diagnostic scores. The latter was found to be a better scoring system because of its higher diagnostic accuracy. At centres with limited expertise in ultrasonography, RIPASA outperforms the Tzanakis score. Although easy to use, the Alvarado score was useful only to ‘rule in’ cases with AA with significant accuracy but at the cost of low sensitivity. It cannot be effectively used in triaging.

There is lack of data on the contrast-enhanced endoscopic ultrasound features of tubercular lymph node; our retrospective analysis of 37 patients with enlarged mediastinal and abdominal lymph nodes showed heterogeneous enhancement in the great majority (70%).

Definitive diagnosis of amoebic liver abscess is challenging owing to the unavailability of sensitive commercial point-of-care molecular tests. The primary aim of our prospective diagnostic study was to compare available laboratory methods for the diagnosis of Entamoeba histolytica in clinical samples with loop-mediated isothermal amplification. We compared deoxyribonucleic acid (DNA) analysis methods, namely, loop-mediated isothermal amplification and reverse transcriptase polymerase chain reaction and enzyme-linked immunosorbent assay (ELISA) using pus, stool and blood samples from 200 patients with clinical and radiological diagnosis of amoebic liver abscess. Loop-mediated isothermal amplification had significantly higher sensitivity (88%) as compared to reverse transcriptase polymerase chain reaction (64%) and excellent specificity (100%).

Tetanus is one of the dreaded fatal diseases which is of public health importance. Reducing the morbidity and mortality due to tetanus, especially maternal and neonatal, is one of the major aims of health organizations around the world. Vaccination against tetanus is one of the most salient interventions. In order to ensure the unerring vaccination practices, the World Health Organization has been updating its position papers on all vaccines. To enable India to follow the appropriate vaccine policy, this article highlights the category and situation-based schedule of tetanus toxoid vaccination.

Loop ileostomy is commonly performed for typhoid ileal perforations as temporary faecal diversion. This is associated with several stoma-related complications and also requires further surgery for its closure. Thus, we were prompted to conduct a prospective observational study on the safety, feasibility and efficacy of ghost ileostomy in typhoid ileal perforations. After dealing with the perforation, a ghost ileostomy was performed in 10 selected patients with favourable circumstances; otherwise, a conventional loop ileostomy was performed in 19 patients. The two groups were comparable (p > 0.05) for morbidity and mortality except for stoma-related complications, seen only in the loop ileostomy group. Body weight was better preserved in the ghost ileostomy group. One patient in the ghost ileostomy group required conversion to loop ileostomy owing to signs of intra-peritoneal suture leak, without any detriment to outcome. Our study shows safety, feasibility and efficacy of ghost ileostomy in selected patients with typhoid ileal perforations, thus avoiding loop ileostomy in one-third of patients.

High-grade malignancy is endemic in sub-Saharan Africa and is prone to the spontaneous tumour lysis syndrome. However, data on spontaneous tumour lysis syndrome remain scanty in our setting. We sought to determine the prevalence and factors associated with laboratory spontaneous tumour lysis syndrome in children in Uganda. We conducted a cross-sectional study among children <18 years old with histologically confirmed high-grade malignancy between October 2013 and April 2014. Laboratory spontaneous tumour lysis syndrome was defined as the presence of ≥2 of each of hyperkalaemia, hypocalcaemia, hyperuricaemia and hyperphosphatemia prior to administration of chemotherapy when alternative diagnoses had been excluded. A p < 0.05 was considered statistically significant. Of 108 children, of median age 7.7 years, where boys outnumbered girls 2:1, high-grade, malignancy included Burkitt’s lymphoma, acute lymphoblastic leukaemia, non-Hodgkin’s lymphoma, acute myeloid leukaemia and Burkitt’s leukaemia, with 14 suffering with laboratory spontaneous tumour lysis syndrome. Hypocalcaemia was its most common electrolyte imbalance; and four children died prior to commencement of chemotherapy. Bulky disease, lactate dehydrogenase levels ≥500 iu/l and serum creatinine levels >1.2 mg/dl were associated with laboratory spontaneous tumour lysis syndrome. However, only bulky disease was significantly predictive of laboratory spontaneous tumour lysis syndrome. Such children would benefit from routine screening.