COVID-19 disease and comorbidity: an outcome? A study on Indian population in a COVID care hospital

Background: The world has been severely affected by the novel coronavirus disease (Covid-19). Continuously rising number of cases has put a significant strain on healthcare resources of all countries of the world. Preliminary studies show that people suffering from comorbid conditions are at a relatively higher risk of severe disease and poor outcome.Methods: We studied the risk of ICU admission in 152 Covid-19 positive patients with comorbidity compared to those without comorbid conditions. We studied effect of old age (>65 years), male sex, presence of at least one comorbidity, presence of multiple comorbidities, diabetes mellitus, hypertension, CAD, respiratory disease, neurological disease, skin disease, and hypothyroidism on outcome of coronavirus disease with two tailed Student’s t-test, odds ratio, Chi-square test was used to test significance of results at 95% confidence interval 95% (95% CI). Fisher’s test was also used if one expected value (row total × column total/grand total) was less than 5.Results: In this study, 23 (15.13%) required ICU care. We found higher odds of ICU admission in Covid-19 patients in case of presence of comorbid condition (OR=7.3, 95% CI=2.674, 20.038), diabetes mellitus (OR=2.8, 95% CI=1.035, 8.028), hypertension (OR=1.3, 95% CI=0.396, 4.258), coronary artery disease (OR=2.3, 95% CI=0.430, 12.978) and malignancy (OR=6.5, 95% CI=1.516, 28.54). Case fatality rate (CFR) of those with comorbid conditions was higher (7.55) compared to those without comorbidity (3.03).Conclusions: This study shows that presence of comorbid conditions in Covid-19 positive patients results in significantly higher risk of ICU admission and poor outcome

Evaluation of nested Polymerase Chain Reaction targeting hup B gene in the diagnosis of tubercular ascites

Abdominal tuberculosis usually has nonspecific presentation, frequently mimicking other diseases. Because of the limitations of the conventional methods of diagnosis of extra pulmonary tuberculosis, focus is shifted to molecular methods. The objectives of this study are to evaluate the role of nested Polymerase Chain Reaction (PCR) targeting hup B gene as a rapid diagnostic modality of tubercular ascites and also to detect the infecting species (Mycobacterium tuberculosis and Mycobacterium bovis). 100 suspected tubercular ascites patients were enrolled in the study. Ascitic fluid was processed by Universal Sample Processing (USP) method and two steps nested PCR was performed targeting hup B gene. Patients were put on Anti Tubercular Therapy [Category I, (2 HRZE + 4 HR) 3, RNTCP, India]. A positive response to therapy was considered as gold standard and PCR assay was compared to determine sensitivity, specificity, positive and negative predictive value in diagnosis of tubercular ascites. 79 patients could be followed up to see the response to therapy. Of these, 39 were PCR positive and 35 responded to Anti Tubercular therapy. The sensitivity, specificity, positive and negative predictive value were found to be 97.1%, 88.6%, 87.2% and 97.5% respectively. The good sensitivity and specificity obtained in the study suggests the use of PCR targeting hup B gene as a routine diagnostic tool for tubercular ascites. Another added advantage is the ability to identify between M. tuberculosis and M. bovis which otherwise have similar clinical presentation.Keywords: Hup B gene; M. tuberculosis; M. bovis; Nested Polymerase Chain ReactionInternet Journal of Medical Update 2012 July;7(2):9-1

Broadband antenna design for wireless communication

Not available

Design of base station antenna using ACP technology for mobile communication

Mobile communication is in ever expanding demand. To cater for the rapid increase in the number of users, the overall capacity of the service must be increased. A very important component of any mobile communication system is the base station antenna. In this work, a single element patch antenna was designed using the ACP technique, operating at 1.8 GHz, which gave a bandwidth of approximately 16% at a VSWR of 2.0. This single element has been incorporated into four element linear arrays. The arrays used a corporate feed network and resulted in a bandwidth of approximately 16% for a 10 dB return loss. Dual polarisation was also implemented in a single element patch antenna to increase the system capacity. A technique based on the maximum and minimum current on a transmission line was used to increase port isolation resulting in -40 dB isolatio

Critical gastrointestinal bleed due to secondary aortoenteric fistula

Secondary aortoenteric fistula (SAEF) is a rare yet lethal cause of gastrointestinal bleeding and occurs as a complication of an abdominal aortic aneurysm repair. Clinical presentation may vary from herald bleeding to overt sepsis and requires high index of suspicion and clinical judgment to establish diagnosis. Initial diagnostic tests may include computerized tomography scan and esophagogastroduodenoscopy. Each test has variable sensitivity and specificity. Maintaining the hemodynamic status, control of bleeding, removal of the infected graft, and infection control may improve clinical outcomes. This review entails the updated literature on diagnosis and management of SAEF. A literature search was conducted for articles published in English, on PubMed and Scopus using the following search terms: secondary, aortoenteric, aorto-enteric, aortoduodenal, aorto-duodenal, aortoesophageal, and aorto-esophageal. A combination of MeSH terms and Boolean operators were used to device search strategy. In addition, a bibliography of clinically relevant articles was searched to find additional articles (Appendix A). The aim of this review is to provide a comprehensive update on the diagnosis, management, and prognosis of SAEF