Epidemiology and Clinical Profile of Snakebites in Goa and Surrounding Areas.

BACKGROUND: Clinico-epidemiological profile of snake envenomation varies in different regions; however, data from India is inadequate. This study was planned to obtain such data from Goa, to help in quick identification of envenomation, prompt treatment and help in building a national database. METHODS: In this prospective observational study,all patients presenting to emergency department between April 2016 to August 2017 with history of snakebite and meeting inclusion and exclusion criteria were enrolled and analysed. RESULTS: 236 patients were screened, 156 were eligible. Mean age was 39.5±15.6; majority (n=122, 78.2%) were in the age group of 20-59 years; 119 (76.3%) were males. Seasonal variation was noted, highest number being in June, July and between September and December. Bites occurred commonly in housewives, students and retired personnel (n=108, 69.23%). 120 patients (76.9%) had hemotoxicity, 7 (4.5%) had neurotoxicity, 29 (18.6%) had only local reaction. Clinical features seen were bleeding (n= 40, 25.6%) , vomiting (n=15, 9.6%), giddiness/syncope (n=14, 9%), breathlessness (n=5, 3.2%), diplopia (n= 5,3.2%), ptosis (n=7, 4.5%), dysarthria (n=1, 0.6%), altered sensorium (n=7, 4.5%), oliguria (n=2, 1.3%), and chest pain (n=1, 0.6%). Majority (n= 117, 78.5%) received antivenom within 6 hours of bite. 31 patients (20.8%) developed reactions to antivenom, most were febrile reactions (n=12, 8.05%). Anaphylaxis occurred in 4 (2.68%) patients. CONCLUSION: Snakebite is a common medical emergency in Goa, with distinct seasonal variation. There was no association between occupation and risk of bite. Hemotoxic and local cytotoxic features predominate in this area. Antivenom reactions though common, are usually mild.

Prevalence and determinants of hypertension in apparently healthy schoolchildren in India: A multi-center study.

Background Hypertension in children is often under recognized, especially in developing countries. Data from rural areas of developing countries is particularly lacking. Objectives To study prevalence of hypertension and its determinants in apparently health school children from predominantly rural populations of India. Methods Apparently healthy schoolchildren ( n = 14,957) aged 5-15 years (mean (standard deviation) age 10.8 (2.8) years; 55.5% boys) at four predominantly rural sites in separate states of India were studied. Systolic and diastolic blood pressures were recorded by trained staff in addition to age, gender, height, weight, type of school and season. Waist circumference was also recorded in 12,068 children. Geographic location and type of school (government, government-aided or private) were used to determine socio-economic status. Results Systolic and/or diastolic hypertension was present in 3443 (23%) children. Systolic hypertension was present in 13.6%, diastolic hypertension in 15.3% and both in 5.9%. Isolated systolic hypertension was present in 7.7% while isolated diastolic hypertension was present in 9.4%. On univariate analysis, age, gender, geographical location, socio-economic status, season and anthropometric parameters (z-scores of height, weight and waist circumference, waist/height ratio and body mass index) were all significantly related to risk of hypertension ( p < 0.0001 for each). Similar association was observed with weight group (normal, overweight and obese). Multiple regression analysis showed lower age, female gender, richer socio-economic status, certain geographical locations, higher weight and larger waist circumference to be independently associated with a greater risk of hypertension. Conclusion There is a high prevalence of hypertension in apparently healthy schoolchildren even in predominantly rural areas of India. Screening and management programs targeted to high risk groups identified may prove cost-effective.

Echocardiographic prevalence of rheumatic heart disease in Indian school children using World Heart Federation criteria - A multi site extension of RHEUMATIC study (the e-RHEUMATIC study).

OBJECTIVES: Rheumatic heart disease (RHD) continues to be major public health burden in developing world. Echocardiographic screening in school children has shown that subclinical RHD cases are several times more than clinical cases. Recent reports have used World Heart Federation (WHF) criteria. Objective of present study was to determine RHD prevalence using WHF criteria in Indian children. METHODS: Children (5-15years) from randomly selected schools across four sites were included. After focused clinical evaluation, echocardiography was performed using WHF criteria in all children. Images/loops of abnormal cases were analyzed independently by an additional experienced cardiologist. Children with murmur and confirmatory echocardiography were categorized 'clinical RHD'; those with abnormal echocardiography alone were labeled 'subclinical RHD'. RESULTS: Among 16,294 children included, mean age was 10.8 ± 2.9years; 55.1% were males; 11,405 (70%) were from rural areas and 3978 (24.4%) were from government schools. We detected RHD by echocardiography in 125 children [prevalence: 7.7/1000 (95% CI 6.3, 9.0)]. Borderline RHD was present in 93 children (5.7/1000, 95% CI 4.6, 6.9), definite RHD in 32 (2/1000, 95% CI 1.2, 2.6), and clinical RHD in six [0.36/1000, 95% CI: 0.1-0.7]. On univariate analysis, older age, female gender, and higher waist circumference were associated while on multivariate analysis, older age (OR 1.18, 95% CI: 1.09, 1.26) and female gender (OR 1.61, 95% CI: 1.13, 2.3) were associated with RHD. CONCLUSION: RHD prevalence varies in different parts of India. Echocardiographic prevalence is several times higher than clinical and underscores importance of echocardiographic screening in community.

Rickettsial Infections in Goa-Not Just Scrub Typhus!

BACKGROUND AND OBJECTIVE: Rickettsial infections are an important cause of undifferentiated febrile illness in tropics. While scrub typhus was reported from Goa, other rickettsial infections have not been reported earlier. The present study was planned to identify pattern of rickettsial infections in Goa. MATERIALS AND METHODS: All patients presenting with undiagnosed acute febrile illness were recruited over a two-year period. Other causes of febrile illness were ruled out by appropriate tests. Sera of the patients were subjected to Weil Felix testing. Patients were labelled as probable rickettsial infection if the titres to any one antigen was >1:80 as per DHR-ICMR guidelines. Clinical details were obtained retrospectively from case records. RESULTS: Sixty-one patients met inclusion criteria, of which six were excluded because of alternative diagnosis. Out of remaining patients, 32 were positive by Weil Felix test (positivity rate 58.18%). Eighteen were males; there was no age predilection. Twenty-one patients were positive for OXK (scrub typhus); of these, 13 were positive for other antigens also. Of the remaining, 6 were positive for OX2 alone, 2 were positive for OX 19 alone, one patient was positive for both OX2 and OX19 and 2 were positive for all three antigens. Most patients had non-specific clinical presentation. Two patients in scrub typhus group and one in spotted fever group died (mortality rate =9.5% and 11.1 %). INTERPRETATION AND CONCLUSIONS: Our study shows that rickettsial infections other than scrub typhus are also prevalent in Goa. Weil Felix test is useful in diagnosis; however, there is cross reactivity between various antigens of the test, hence differentiation into various groups of rickettsiosis should not be done based on Weil Felix test alone.

The neurological effects of methyl bromide intoxication.

Used primarily as a fumigant or as a substrate in chemical processes, methyl bromide is a highly toxic gas. The gas is usually absorbed by inhalation and effects on the lungs, gastrointestinal tract, skin, and brain are seen. Numerous instances of acute and chronic neurologic injury have been reported: acute poisoning results in seizures, myoclonus, ataxia or cerebral oedema beginning as early as 30 min after exposure while subacute or chronic intoxication presents with diverse slowly progressive neurological and neurobehavioral symptoms. Serum bromide levels may be elevated, but often return rapidly to normal. Electroencephalography may show frontally-predominant slow waves or polyspikes with following slow wave, and MRI reveals characteristic involvement in the dentate nucleus of the cerebellum, the brainstem, and the splenium of the corpus callosum. Symmetric and selective lesions in characteristic sites are observed on imaging and on histopathological examination. These are likely produced by methylation of intracellular lipids, protein and glutathione; production of toxic metabolites; defective neurotransmitter function; and abnormal oxidative phosphorylation. This article reviews the toxic effects of this gas, the pathophysiology and symptoms of its effects on the nervous system, and characteristic findings on MRI; and presents an illustrative case of methyl bromide intoxication due to exposure at a factory producing the compound commercially.

Adult lead encephalopathy.

The neurotoxicity of lead to the adult brain is less well-known than that seen in children. It may present as acute severe encephalopathy or as chronic cognitive and behavioural symptoms, either in isolation or with systemic features of lead intoxication. Magnetic resonance imaging findings in lead encephalopathy vary. The pathogenesis of lead encephalopathy and its effects on cognition both during development and in the adult are discussed. That encephalopathic symptoms do not correlate with blood lead levels and that they may persist after chelation are highlighted. As an illustration, we describe a patient with chronic cumulative lead intoxication, who presented with peripheral neuropathy, anaemia, and a 'lead line' on the gingiva. She had cognitive dysfunction with extensive subcortical and cerebellar white matter lesions on magnetic resonance imaging. An area of restricted diffusion in both frontal regions is likely to be due to active ongoing demyelinating at the 'leading edge' of the lesion. Although systemic features and the peripheral neuropathy improved with chelation, the encephalopathy showed only marginal change, with later appearance of a symmetric akinetic-rigid state.

Scrub typhus in patients reporting with acute febrile illness at a tertiary health care institution in Goa.

BACKGROUND & OBJECTIVES: Scrub typhus is one of the differential diagnoses of haemorrhagic fevers especially if associated with jaundice and/or renal failure. Goa State in the western region of India has been witnessing increased incidence of such fevers, therefore, the present study was undertaken to identify whether scrub typhus is the aetiological agent. METHODS: Adult patients presenting with undiagnosed febrile illness between June 2009 to October 2010, were evaluated. Testing was done using a commercial ELISA kit for specific IgM antibodies against Orientia tsutsugamushi. RESULTS: Of the 44 patients included in the study, 15 (34%) were found to be positive for IGM antibodies against O. tsutsugamushi. The cases were seen mainly in the months between July to November. The common symptoms noted were fever, myalgias, gastrointestinal complaints, followed by breathlessness, rash and jaundice. The pathognomonic features such as eschar and lymphadenopathy were seen only in two patients. Nearly two third of the patients had leukocytosis (67%) and low serum albumin (60%). The most common complication noticed was hepatitis (80%) followed by acute respiratory distress syndrome (ARDS) (60%), thrombocytopenia (40%) and acute renal failure (33%). Five patients died in the course of illness. INTERPRETATION & CONCLUSIONS: Our results showed that scrub typhus should be considered in the differential diagnosis of acute febrile illness associated with gastrointestinal symptoms, rash, myalgia , including those with organ dysfunctions such as hepatorenal syndrome, coagulopathy or ARDS. Empirical treatment with doxycycline or macrolides may be given in cases with strong suspicion of scrub typhus.

Bilateral thalamic necrosis following ingestion of ridge gourd infested with coelomycete fungi (Diplodia).

Bilateral thalamic lesions detected on magnetic resonance imaging have a wide differential diagnosis. This report describes a previously healthy young man who developed bilateral thalamic necrosis with seizures, vomiting, hepatitis, neutrophilic leukocytosis and metabolic acidosis following consumption of raw dried fruits of the ridge gourd plant (Luffa acutangula) prescribed by a traditional medicine practitioner. These fruits were subsequently shown to be infested with spores and conidiomata of Diplodia, a coelomycete fungus known to cause neurotoxicity in farm animals. The patient made a partial recovery with supportive care, and has persistent deficits consistent with bilateral medial thalamic damage. This is the first report of neurological toxicity attributable to Diplodia in humans, and this entity should be considered in the differential diagnosis of bilateral thalamic lesions in the appropriate clinical setting.

Shone's complex.

Shone's complex is a rare congenital heart disease consisting of multiple levels of left sided obstructive lesions including supravalvar mitral ring, parachute mitral valve, subaortic stenosis and coarctation of aorta. The present case report describes a case of complete form of Shone's complex that was incidentally detected in an adult.