Artificial neural network for ecg classification

This research work is supervised by ANN based algorithm to classify the ECG waveforms. The ECG waveform gives the almost all information about activity of the heart, which is depending on the electrical activity of the heart. In this paper we are focused only five features of ECG signal P, Q, R, S, T. This is achieved by extracting the various features and duration of ECG waveform P-wave, PR segment, PR interval, QRS Complex, ST segment, T-wave, ST- interval, QTc and QRS voltage. ECG signal and heart rate are used the parameter for detection diseases, most of the data comes from PhysioDataNet and MIT-BIH data base. This research is focused on to find out best neural network structure which classifies the abnormalities of heart diseases. This technique also identifies the normal region for classification of abnormalities; because of ECG waveform is varying from person to person at different condition

MECHANICAL DESIGN OF A LEGGED-WHEEL HYBRID QUADRUPED ROBOT FOR MULTI-TERRAIN NAVIGATION

The two most common modes of locomotion used by humans are legged mode and wheeled mode, the former an inherent gift while the latter being an ingenious invention on their part. While both have their advantages, they may fall short in some aspects for instance, legs may fail in terms of high speeds and wheels might prove not so handy in the more demanding and uneven terrains Thus, a leg-wheel hybrid platform promises to ensure both high speeds and good stability on a variety of terrains

Paediatric traumatic brain injury: Study of analysis of outcome predictors

Introduction. Traumatic brain injury is a leading cause of death and disability among children, adolescents. Therefore, analysing outcome predictors and initiating preventive policies may contribute to decreased incidence and better prognosis. Aim. Aim to describe the epidemiologic characteristics, mechanism of injury, radiological findings and also to analyse the determinants of outcome that could help to provide better critical care and also to establish effective preventive policies. Material and Methods. We conducted a prospective study including patients ?18 years admitted to our Neuro-intensive care unit at R.N.T. Medical College ,Udaipur, Rajasthan, India from September 2016 to June 2018.Factors including age, gender ,mode of injury, Glasgow coma score(GCS) at admission ,pupillary size-reaction, radiological findings and their relation to outcome was assessed .Patients were divided into mild, moderate and severe head injury according to GCS. Outcome of patients was assessed by Glasgow outcome scale. For statical Analysis used Chisquare test. Statistical Analysis was carried out using Stata 11.0(College station, Texas, USA) Results. The study comprised of 84 paediatric patients. 44.4%of patients were within 1–5-year age group. The most common cause for trauma was falls and traffic accidents. Patients with mild, moderate and severe head injury were 38.1%, 47.6%and 14.3% respectively. Poor outcome predictors included severity of head injury, pupil size and reaction, midline shift on CT. Conclusion. This study emphasizes increased burden of paediatric brain injury with assessment of predicting factors for more effective critical care of patients and emerging need for effective fall and traffic accidents prevention strategies

Larvicidal Activity of Methanol and Chloroform Extract of Swertia celiata against Three Mosquito Vectors

Background: Mosquitoes are an important public health concern as they spread life-threatening diseases such as malaria, filaria, Japanese encephalitis, dengue fever, chikungunya, and yellow fever. In the last decades, synthetic insecticides were extensively used for the control of these vector-borne diseases but it also reported the detrimental side-effects in human beings and pet animals. To overcome the side effects, plants-derived secondary metabolites were screened and tested for insecticidal properties. The present study deals with the insecticidal activity of chloroform and methanol extracts of Swertia celiata leaves against Culex quenquifasciatus, Aedes aegypti, and Anopheles stephensi larvae.Method: The S. celiata leaves were subjected to chloroform and methanol with 1:3 (Weight/ Volume) ratio and the extracted solvent was dried using rotary vacuum evaporator. The larvicidal activity of the extract was tested using WHO method and LC50 and LC90 were evaluated by probit analysis.Results: The LC50 value of chloroform extract of S. celiata was found to be 65.288, 67.406 and 71.608 ppm whereas LC90 was 184.721, 186.582 and 192.497 ppm against C. quinquefasciatus, Ae. aegypti and A. stephensi, respectively. The methanolic extract was also found potent; LC50 was 91.503, 101.574 and 99.104 ppm whereas LC90 was 230.823, 271.927 and 234.257 ppm against C. quinquefasciatus, Ae. aegypti and A. stephensi, respectively. Both chloroform and methanol extract were found significantly lethal tothe tested mosquito vectors.Conclusion: Taken results together, chloroform extract showed higher toxicity as compared to methanolic extract against all the tested species. The study clearly revealed that S. ciliata extract or bioactive compounds can be used as an alternative to synthetic insecticides

Posttraumatic hydrocephalus: Lessons learned from management and evaluation at a tertiary institute with review of literature

Background: Post traumatic hydrocephalus (PTH) is a commonest treatable complication of severe traumatic brain injury that’s leads to failure of improvement and worsening of the outcome. Incidence of posttraumatic hydrocephalus is 0.7%-29% reported in different literature. We have observed the development of PTH frequently seen in patients with severe head injury and after decompressive craniectomy (DC). Pathophysiology includes inflammatory changes and adhesion of arachnoid granulation, cerebral ischemia and alteration in cerebrospinal fluid (CSF) dynamics. We studied 35 cases of PTH diagnosed and treated at our institute from May 2008 to May 2017.Material and methods: This is hospital based retrospective and prospective study conducted in tertiary center on the basis of neuro-radiological examination of the patient. Clinical biodata and radiological profile of the patients was studied at initial presentation with trauma, and when the patient worsened with symptoms of raised intracranial pressure (ICP) in state of established PTH. These cases were treated by medium pressure ventriculoperitoneal shunt (V.P shunt) and outcome was evaluated.Results: Incidence of PTH in our study is (2.3%). Out of 35 cases 24 (68.57%) were male and 11(31.4%) were female. Road traffic accident (RTA) was the most common mode of injury (82.85%), acute subdural hematoma (SDH) was the most common finding on C.T scan in 15 cases (42.8 %). Decompressive craniectomy was performed in 77% at time of initial trauma. PTH had favourable outcome with V.P. shunting in 91.42%.Conclusion: Patients with traumatic brain injury present with many complications but PTH is most frequent sequeale that can present in form of various neurological symptoms after trauma and decompressive craniectomy. C.T. scan brain is the investigation of choice for diagnosis of PTH. Outcome was favourable after V.P. shunt in PTH

Clinical spectrum of paediatric head injury: A prospective study from tribal region

Introduction: Traumatic Brain injury is considered as a major health problem which causes frequent deaths and disabilities in paediatric population with special concern to tribal regions of developing countries like India where etiology of traumatic brain injury in the paediatric population fall from height dominant over the road traffic accident as a major. Aim and objective: The aim is to analyse the epidemiology, mechanism, clinical presentation, severity and outcome of paediatric head injury in the tribal region of northern India that could help to make preventive policies to improve their care. Material methods: It is a prospective observational study of 345 children of up to 18 years of age admitted under Department of Neurosurgery from October 2017 to April 2019. Results: The study population comprised of 345 paediatric patients. Mean age was 9.25 years.36.81% patients were in 1-6-year age group and male to female ratio was 2.45. The most common cause for trauma was fall from height in 179(52%) cases followed by RTA in 141(41%) cases. The most common radiological finding was depressed skull fractures in 97(50%) cases. There was 35% mortality in severe head injury patients. Conclusion: This study through some light on the different scenario of head injury in Tribal regions of Developing country and will help to formulate effective strategies for prevention and better care of the patients

Clinical spectrum of paediatric head injury. A prospective study from tribal region

Introduction: Traumatic brain injury is considered as a major health problem which causes frequent deaths and disabilities in the paediatric population with special concern to tribal regions of developing countries like India where aetiology of traumatic brain injury in the paediatric population fall from height dominant over the road traffic accident as a major. Aim & Objective: The aim is to analyse the epidemiology, mechanism, clinical presentation, severity and outcome of paediatric head injury in the tribal region of northern India that could help to make preventive policies to improve their care. Material Methods: It is a prospective observational study of 345 children of up to 18 years of age admitted under Department of Neurosurgery from October 2017 to April 2019. Results: The study population comprised of 345 paediatric patients. Mean age was 9.25 years.36.81% patients were in 1-6-year age group and male to female ratio was 2.45. The most common cause for trauma was fall from height in 179(52%) cases followed by RTA in 141(41%) cases. The most common radiological finding was depressed skull fractures in 97(50%) cases. There was 35% mortality in severe head injury patients. Conclusion: This study through some light on the different scenario of head injury in Tribal regions of Developing country and will help to formulate effective strategies for prevention and better care of the patients

Large tentorium meningioma causing chiari malformation type-1 with syringomalia with complete resolution of syrinx and chiari after surgical excision: Rare case report with review of literature

A 35-year-old female was admitted with a 3-year history of headache, gait disturbance and vertigo on & off and one year history of nasal regurgitation. Magnetic resonance imaging demonstrated a large tentorium meningioma left sided and syringomyelia in the upper cervical cord associated with caudal displacement of the cerebellar tonsil (chiari type -1 malformation). Herniation of the cerebellar tonsil and distortion of the brain stem had probably caused disturbance of cerebrospinal fluid flow which combined with obstruction of the spinal canal, caused the syrinx. Complete excision of the tumor resulted in symptomatic improvement of these symptoms with complete resolution of syrinx & chiari

Bone flap preservation in abdominal wall after decompressive craniectomy in head injury: A single institute experience

Objective: The objective of this study is to study factors associated with infection of calvarial bone flap preserved in subcutaneous tissue of abdominal wall after decompressive craniectomy (DC) in head injury. Associated factors include age, sex, nutrition of patient, GCS of patient at time of surgery, vacuum drain placement, type of paramedian abdominal incision, site of decompressive craniectomy and associated comorbid conditions. Method: This is a prospective study carried out in department of neurosurgery, tertiary care centre of southern Rajasthan (India) from July 2016 to December 2018. Total of 66 patient with head injury were enrolled, who underwent DC and bone flap preservation in abdominal wall. Result: Out of 112 patients who underwent DC in this study period 66 were included in this study. Out of 66 patient 7(10.6%) patient develop bone flap infection. Bone flap infection was more in poor nutrition patient, poor GCS (5-8), patient in which vacuum drain was not placed, patient with bifrontal decompressive craniectomy and associated comorbid condition. Conclusion: Bone flap preservation in subcutaneous abdominal wall after DC is safe and efficient. Cranioplasty with autologous bone graft has lower cost, good cosmetic results and is well accepted by patient