975 results on '"Narayan, V"'
Search Results
2. Au-Ge alloys for wide-range low-temperature on-chip thermometry
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Dann, J. R. A., Verpoort, P. C., de Oliveira, J. Ferreira, Rowley, S. E., Ford, C. J. B., Conduit, G. J., and Narayan, V.
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Condensed Matter - Materials Science - Abstract
We present results of a Au-Ge alloy that is useful as a resistance-based thermometer from room temperature down to at least \SI{0.2}{\kelvin}. Over a wide range, the electrical resistivity of the alloy shows a logarithmic temperature dependence, which simultaneously retains the sensitivity required for practical thermometry while also maintaining a relatively modest and easily-measurable value of resistivity. We characterize the sensitivity of the alloy as a possible thermometer and show that it compares favorably to commercially-available temperature sensors. We experimentally identify that the characteristic logarithmic temperature dependence of the alloy stems from Kondo-like behavior induced by the specific heat treatment it undergoes.
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- 2019
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3. Long-lived non-equilibrium superconductivity in a non-centrosymmetric Rashba semiconductor
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Narayan, V., Verpoort, P. C., Dann, J. R. A., Backes, D., Ford, C. J. B., Lanius, M., Jalil, A. R., Schüffelgen, P., Mussler, G., Conduit, G. J., and Grützmacher, D.
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Condensed Matter - Superconductivity - Abstract
We report non-equilibrium magnetodynamics in the Rashba-superconductor GeTe, which lacks inversion symmetry in the bulk. We find that at low temperature the system exhibits a non-equilibrium state, which decays on time scales that exceed conventional electronic scattering times by many orders of magnitude. This reveals a non-equilibrium magnetoresponse that is asymmetric under magnetic field reversal and, strikingly, induces a non-equilibrium superconducting state distinct from the equilibrium one. We develop a model of a Rashba system where non-equilibrium configurations relax on a finite timescale which captures the qualitative features of the data. We also obtain evidence for the slow dynamics in another non-superconducting Rashba system. Our work provides novel insights into the dynamics of non-centrosymmetric superconductors and Rashba systems in general.
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- 2019
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4. Chirality relaxation in low-temperature strongly Rashba-coupled systems
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Verpoort, P. C. and Narayan, V.
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Condensed Matter - Mesoscale and Nanoscale Physics - Abstract
We study the relaxation dynamics of non-equilibrium chirality distributions of charge carriers in Rashba systems. We find that at low temperature inter-Rashba band transitions become suppressed due to the combined effect of the Rashba momentum split and the chiral spin texture of a Rashba system. Specifically, we show that momentum exchange between carriers and the phonon bath is effectively absent at temperatures where the momentum of thermal phonons is less than twice the Rashba momentum. This allows us to identify inter-carrier scattering as the dominant process by which non-equilibrium chirality distributions relax. We show that the magnitude of inter-carrier scattering is strongly influenced by the opposing spin structure of the Rashba bands. Finally, we provide an explicit result for the inter-band relaxation timescale associated with inter-carrier Coulomb scattering. We develop a general framework and assess its implications for GeTe, a bulk Rashba semiconductor with a strong Rashba momentum split., Comment: 14 pages, 2 figures
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- 2019
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5. Disentangling surface and bulk transport in topological-insulator $p$-$n$ junctions
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Backes, D., Huang, D., Mansell, R., Lanius, M., Kampmeier, J., Ritchie, D. A., Mussler, G., Gumbs, G., Grützmacher, D., and Narayan, V.
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Condensed Matter - Mesoscale and Nanoscale Physics - Abstract
By combining $n$-type $\mathrm{Bi_2Te_3}$ and $p$-type $\mathrm{Sb_2Te_3}$ topological insulators, vertically stacked $p$-$n$ junctions can be formed, allowing to position the Fermi level into the bulk band gap and also tune between $n$- and $p$-type surface carriers. Here we use low-temperature magnetotransport measurements to probe the surface and bulk transport modes in a range of vertical $\mathrm{Bi_2Te_3/Sb_2Te_3}$ heterostructures with varying relative thicknesses of the top and bottom layers. With increasing thickness of the $\mathrm{Sb_2Te_3}$ layer we observe a change from $n$- to $p$-type behavior via a specific thickness where the Hall signal is immeasurable. Assuming that the the bulk and surface states contribute in parallel, we can calculate and reproduce the dependence of the Hall and longitudinal components of resistivity on the film thickness. This highlights the role played by the bulk conduction channels which, importantly, cannot be probed using surface sensitive spectroscopic techniques. Our calculations are then buttressed by a semi-classical Boltzmann transport theory which rigorously shows the vanishing of the Hall signal. Our results provide crucial experimental and theoretical insights into the relative roles of the surface and bulk in the vertical topological $p$-$n$ junctions., Comment: 11 pages, 5 figures
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- 2016
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6. Blood pressure thresholds in pregnancy for identifying maternal and infant risk: a secondary analysis of Community-Level Interventions for Pre-eclampsia (CLIP) trial data
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Woo Kinshella, Mai-Lei, Wong, Hubert, Vilanculo, Faustino, Vala, Anifa, Ukah, Ugochi V, Tu, Domena K, Thabane, Lehana, Tchavana, Corsino, Thornton, Jim, Sotunsa, John O, Sheikh, Sana, Sharma, Sumedha, Schuurman, Nadine, Sawchuck, Diane, Revankar, Amit P, Raza, Farrukh, Ramdurg, Umesh Y, Pires, Rosa, Payne, Beth A, Nobela, Vivalde, Nkumbula, Cláudio, Nhancolo, Ariel, Nhamirre, Zefanias, Mungarwadi, Geetanjali I, Mulungo, Dulce, Mocumbi, Sibone, Mitton, Craig, Merialdi, Mario, Memon, Javed, Matavele, Analisa, Mastiholi, Sphoorthi S, Mandlate, Ernesto, Maculuve, Sónia, Macuacua, Salésio, Macete, Eusébio, Macamo, Marta, Lui, Mansun, Li, Jing, Lewis, Gwyneth, Lewin, Simon, Lee, Tang, Langer, Ana, Kudachi, Uday S, Kodkany, Bhalachandra S, Knight, Marian, Kengapur, Gudadayya S, Kavi, Avinash J, Katageri, Geetanjali M, Kariya, Chirag, Karadiguddi, Chandrappa C, Kamble, Namdev A, Joshi, Anjali M, Hutton, Eileen, Hussain, Amjad, Hoodbhoy, Zahra, Honnungar, Narayan V, Grobman, William, Gonçálves, Emília, Firoz, Tabassum, Fillipi, Veronique, Filimone, Paulo, Engelbrecht, Susheela M, Dunsmuir, Dustin T, Dumont, Guy, Drebit, Sharla K, Donnay, France, Dharamsi, Shafik, Dhamanekar, Vaibhav B, Derman, Richard, Darlow, Brian, Cutana, Silvestre, Chougala, Keval S, Chiaú, Rogério, Charantimath, Umesh S, Byaruhanga, Romano Nkumbwa, Boene, Helena, Biz, Ana Ilda, Bique, Cassimo, Betrán, Ana Pilar, Bannale, Shashidhar G, Augusto, Orvalho, Ansermino, J Mark, Amose, Felizarda, Ahmed, Imran, Adetoro, Olalekan O, Bone, Jeffrey N, Magee, Laura A, Singer, Joel, Nathan, Hannah, Qureshi, Rahat N, Sacoor, Charfudin, Sevene, Esperança, Shennan, Andrew, Bellad, Mrutyunjaya B, Goudar, Shivaprasad S, Mallapur, Ashalata A, Munguambe, Khátia, Vidler, Marianne, Bhutta, Zulfiqar A, and von Dadelszen, Peter
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- 2021
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7. Pediatric Tumors of Oral and Maxillofacial Region- Clinical Diagnosis and Management
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Narayan, V. Keerthi, primary, Nitya, K., additional, Cruz, Johara Maria, additional, Chidambareshwar, Aishwarya, additional, and Vasumathi, D., additional
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- 2021
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8. Migrating to the Roads in the Cities in Uttar Pradesh: Some Reflections
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Majumder, Bhaskar, Narayan, V., and Mishra, Nripendra Kishore, editor
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- 2020
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9. The molecular characteristics of non‐small cell lung cancer in the Northern Territory's Top End.
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Downton, Teesha Dzu Fun, Wing, Kristof, Cosentino, Stevie Brooke, and Karanth, Narayan V
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ANAPLASTIC lymphoma kinase ,EPIDERMAL growth factor receptors ,FISHER exact test ,INDIGENOUS Australians ,LUNG cancer - Abstract
Aim: Indigenous Australians with lung cancer have poorer survival than non‐Indigenous Australians. The reasons for the disparity are not fully understood and this study hypothesized that there may be a difference in the molecular profiles of tumors. The aim of this study, therefore, was to describe and compare the characteristics of non‐small cell lung cancer (NSCLC) in the Northern Territory's Top End, between Indigenous and non‐Indigenous patients, and describe the molecular profile of tumors in the two groups. Methods: A retrospective review was conducted of all adults with a new diagnosis of NSCLC in the Top End from 2017 to 2019. Patient characteristics assessed were Indigenous status, age, sex, smoking status, disease stage, and performance status. Molecular characteristics assessed were epidermal growth factor receptor (EGFR), anaplastic lymphoma kinase (ALK), v‐raf murine sarcoma viral oncogene homolog B (BRAF), ROS proto‐oncogene 1 (ROS1), Kirsten rat sarcoma viral oncogene homolog (KRAS), mesenchymal‐epithelial transition (MET), human epidermal growth factor receptor 2 (HER2), and programmed death‐ligand 1 (PD‐L1). Student's t‐test and Fisher's Exact Test were used in the statistical analysis. Results: There were 152 patients diagnosed with NSCLC in the Top End from 2017–2019. Thirty (19.7%) were Indigenous and 122 (80.3%) were non‐Indigenous. Indigenous patients compared to non‐Indigenous patients were younger at diagnosis (median age 60.7 years versus 67.1 years, p = 0.00036) but were otherwise similar in demographics. PD‐L1 expression was similar between Indigenous and non‐Indigenous patients (p = 0.91). The only mutations identified among stage IV non‐squamous NSCLC patients were EGFR and KRAS but testing rates and overall numbers were too small to draw conclusions about differences in prevalence between Indigenous and non‐Indigenous patients. Conclusion: This is the first study to investigate the molecular characteristics of NSCLC in the Top End. [ABSTRACT FROM AUTHOR]
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- 2024
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10. Real‐world experience of immune checkpoint inhibitors in patients with solid tumours in the Top End of the Northern Territory, Australia from 2016 to 2021: a retrospective observational cohort study.
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Miller, Abigail R., Balino, Aries, Tun Min, Sandy, Downton, Teesha, Karanth, Narayan V., Backen, Alison, and Charakidis, Michail
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THERAPEUTIC use of antineoplastic agents ,RISK assessment ,MORTALITY ,DRUG side effects ,RURAL health ,SCIENTIFIC observation ,RETROSPECTIVE studies ,DESCRIPTIVE statistics ,TREATMENT duration ,SEVERITY of illness index ,IMMUNE checkpoint inhibitors ,LONGITUDINAL method ,MEDICAL records ,ACQUISITION of data ,RURAL conditions ,TUMORS ,CONFIDENCE intervals ,HEALTH equity ,HEALTH of indigenous peoples ,INDIGENOUS Australians ,PATIENTS' attitudes ,URBAN health - Abstract
Background: Use of immune checkpoint inhibitors is growing, but clinical trial data may not apply to Indigenous patients or patients living in remote areas. Aims: To provide real‐world incidence of immune‐related adverse events (irAE) in the Top End of the Northern Territory and compare incidence between demographic subgroups. Methods: This retrospective, observational, cohort study collected data from electronic records of patients living in the Top End with solid organ cancer treated with immunotherapy between January 2016 and December 2021. The primary outcome was cumulative incidence of any‐grade and severe irAE. Secondary outcomes were overall survival, treatment duration and reason for treatment discontinuation. Results: Two hundred and twenty‐six patients received immunotherapy. Forty‐eight (21%) lived in a remote or very remote area, and 36 (16%) were Indigenous. Cumulative incidence of any‐grade irAE was 54% (122/226 patients); incidence of severe irAE was 26% (59/226 patients). Rates were similar between Indigenous and non‐Indigenous patients of any‐grade (42% vs 56%, P = 0.11) and severe (11% vs 18%, P = 0.29) irAE. However, Indigenous patients had shorter treatment duration, more frequently discontinued treatment due to patient preference and appeared to have shorter median overall survival than non‐Indigenous patients (17.1 vs 30.4 months; hazard ratio (HR) = 1.5, 95% confidence interval (CI) = 0.92–2.66). There was no difference in mortality between remote and urban patients (median overall survival 27.5 vs 30.2 months; HR = 1.1, 95% CI = 0.7–1.7). Conclusions: Rates of irAE in our cohort are comparable to those in the published literature. There was no significant difference in any‐grade or severe irAE incidence observed between Indigenous and non‐Indigenous patients. [ABSTRACT FROM AUTHOR]
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- 2024
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11. Significance of lung nodules detected on chest CT among adult Aboriginal Australians – a retrospective descriptive study.
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Ng, Lai Yun, Howarth, Timothy P., Doss, Arockia X., Charakidis, Michail, Karanth, Narayan V., Mo, Lin, and Heraganahally, Subash S.
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PULMONARY nodules ,ABORIGINAL Australians ,COMPUTED tomography ,PULMONARY function tests ,LUNG cancer - Abstract
Introduction: There are limited data on chest computed tomography (CT) findings in the assessment of lung nodules among adult Aboriginal Australians. In this retrospective study, we assessed lung nodules among a group of adult Aboriginal Australians in the Northern Territory of Australia. Methods: Patients who underwent at least two chest CT scans between 2012 and 2020 among those referred to undergo lung function testing (spirometry) were included. Chest CT scans were assessed for the number, location, size and morphological characteristics of lung nodules. Results: Of the 402 chest CTs assessed, 75 patients (18.7%) had lung nodules, and 57 patients were included in the final analysis with at least two CT scans available for assessment over a median follow‐up of 87 weeks. Most patients (68%) were women, with a median age of 58 years and smoking history in 83%. The majority recorded only a single nodule 43 (74%). Six patients (10%) were diagnosed with malignancy, five with primary lung cancer and one with metastatic thyroid cancer. Of the 51 (90%) patients assessed to be benign, 64 nodules were identified, of which 25 (39%) resolved, 38 (59%) remained stable and one (1.8%) enlarged on follow‐up. Nodules among patients with malignancy were typically initially larger and enlarged over time, had spiculated margins and were solid, showing no specific lobar predilection. Conclusions: Most lung nodules in Aboriginal Australians are likely to be benign. However, a proportion could be malignant. Further prospective studies are required for prognostication and monitoring of lung nodules in this population. [ABSTRACT FROM AUTHOR]
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- 2024
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12. The Community-Level Interventions for Pre-eclampsia (CLIP) cluster randomised trials in Mozambique, Pakistan, and India: an individual participant-level meta-analysis
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Macete, Eusébio, Boene, Helena, Amose, Felizarda, Augusto, Orvalho, Bique, Cassimo, Biz, Ana Ilda, Chiaú, Rogério, Cutana, Silvestre, Filimone, Paulo, Gonçálves, Emília, Macamo, Marta, Macuacua, Salésio, Maculuve, Sónia, Mandlate, Ernesto, Matavele, Analisa, Mocumbi, Sibone, Mulungo, Dulce, Nhamirre, Zefanias, Nhancolo, Ariel, Nkumbula, Cláudio, Nobela, Vivalde, Pires, Rosa, Tchavana, Corsino, Vala, Anifa, Vilanculo, Faustino, Sheikh, Sana, Hoodbhoy, Zahra, Ahmed, Imran, Hussain, Amjad, Memon, Javed, Raza, Farrukh, Katageri, Geetanjali M, Charantimath, Umesh S, Bannale, Shashidhar G, Chougala, Keval S, Dhamanekar, Vaibhav B, Honnungar, Narayan V, Joshi, Anjali M, Kamble, Namdev A, Karadiguddi, Chandrappa C, Kavi, Avinash J, Kengapur, Gudadayya S, Kodkany, Bhalachandra S, Kudachi, Uday S, Mastiholi, Sphoorthi S, Mungarwadi, Geetanjali I, Ramdurg, Umesh Y, Revankar, Amit P, Drebit, Sharla K, Dunsmuir, Dustin T, Kariya, Chirag, Lui, Mansun, Sawchuck, Diane, Tu, Domena K, Ukah, Ugochi V, Woo Kinshella, Mai-Lei, Ansermino, J Mark, Betrán, Ana Pilar, Derman, Richard, Dharamsi, Shafik, Donnay, France, Dumont, Guy, Engelbrecht, Susheela M, Fillipi, Veronique, Firoz, Tabassum, Grobman, William, Knight, Marian, Langer, Ana, Lewin, Simon, Lewis, Gwyneth, Mitton, Craig, Schuurman, Nadine, Shennan, Andrew, Thornton, Jim, Adetoro, Olalekan, Sotunsa, John O, von Dadelszen, Peter, Bhutta, Zulfiqar A, Sharma, Sumedha, Bone, Jeffrey, Singer, Joel, Wong, Hubert, Bellad, Mrutyunjaya B, Goudar, Shivaprasad S, Lee, Tang, Li, Jing, Mallapur, Ashalata A, Munguambe, Khátia, Payne, Beth A, Qureshi, Rahat N, Sacoor, Charfudin, Sevene, Esperança, Vidler, Marianne, and Magee, Laura A
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- 2020
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13. Community level interventions for pre-eclampsia (CLIP) in India: A cluster randomised controlled trial
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Bellad, Mrutunjaya B., Goudar, Shivaprasad S., Mallapur, Ashalata A., Sharma, Sumedha, Bone, Jeffrey, Charantimath, Umesh S., Katageri, Geetanjali M., Ramadurg, Umesh Y, Mark Ansermino, J., Derman, Richard J., Dunsmuir, Dustin T., Honnungar, Narayan V., Karadiguddi, Chandrashekhar, Kavi, Avinash J., Kodkany, Bhalachandra S., Lee, Tang, Li, Jing, Nathan, Hannah L., Payne, Beth A., Revankar, Amit P., Shennan, Andrew H., Singer, Joel, Tu, Domena K., Vidler, Marianne, Wong, Hubert, Bhutta, Zulfiqar A., Magee, Laura A., and von Dadelszen, Peter
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- 2020
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14. Molecular subtyping for predicting non-organ confined disease and survival outcomes after radical cystectomy in clinical high-grade T1 and T2 bladder cancer patients
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De Jong, J.J., primary, Lotan, Y., additional, Proudfoot, J., additional, Daneshmand, S., additional, Svatek, R., additional, Narayan, V., additional, Shreyas Subhash, J., additional, Li, R., additional, Inman, B., additional, Wright, J., additional, Shah, P., additional, and Gibb, E., additional
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- 2024
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15. Vital Staining- Chemistry and its Application in Dentistry
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Nitya, K., primary, Amberkar, Vikram S., additional, Narayan, V. Keerthi, additional, Ramya, R., additional, Sneha, S., additional, and Vasupradha, G., additional
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- 2021
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16. Vortex detection and quantum transport in mesoscopic graphene Josephson junction arrays
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Richardson, C. L., Edkins, S. D., Berdiyorov, G. R., Chua, C. J., Griffiths, J. P., Jones, G. A. C., Buitelaar, M. R., Narayan, V., Sfigakis, F., Smith, C. G., Covaci, L., and Connolly, M. R.
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Condensed Matter - Mesoscale and Nanoscale Physics ,Condensed Matter - Superconductivity - Abstract
We investigate mesoscopic Josephson junction arrays created by patterning superconducting disks on monolayer graphene, concentrating on the high-$T/T_c$ regime of these devices and the phenomena which contribute to the superconducting glass state in diffusive arrays. We observe features in the magnetoconductance at rational fractions of flux quanta per array unit cell, which we attribute to the formation of flux-quantized vortices. The applied fields at which the features occur are well described by Ginzburg-Landau simulations that take into account the number of unit cells in the array. We find that the mean conductance and universal conductance fluctuations are both enhanced below the critical temperature and field of the superconductor, with greater enhancement away from the graphene Dirac point., Comment: 5 pages, 6 figures
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- 2014
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17. Autonomous systems: Indoor drone navigation.
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Ashwin, Iyer, Rajagopal, Manojkumar, Naren, M., Narayan, V. Santosh, and Murugan, Bala
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AERONAUTICAL navigation ,NAVIGATION - Abstract
In this research work, we present an advanced autonomous indoor navigation system for drones, leveraging the Nav2 navigation system framework and SLAM Toolbox in ROS (Robot Operating System) within the Gazebo simulation environment. Unlike previous implementations which primarily focused on terrestrial robots and land vehicles, our system introduces significant innovations in the context of UAVs (Unmanned Aerial Vehicles). The proposed solution addresses the critical challenge of precise localization and mapping in complex indoor settings, where GPS signals are unavailable. This research contributes to the field by showcasing a simulated quadcopter's capability to autonomously navigate and traverse obstacles in an indoor environment. Distinctly, our approach extends the functionalities of the Nav2 framework, previously validated in ground vehicles, to UAVs, demonstrating its adaptability and potential for broader applications. This innovation represents a substantial leap over existing systems, offering a novel use case for indoor UAV navigation, which is critical for tasks such as emergency rescue operations, inspection, and surveillance in GPS-denied environments. [ABSTRACT FROM AUTHOR]
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- 2024
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18. Low-dose aspirin for the prevention of preterm delivery in nulliparous women with a singleton pregnancy (ASPIRIN): a randomised, double-blind, placebo-controlled trial
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Achieng, Emmah, Bauserman, Melissa, Bose, Carl, Bucher, Sherri, Carlo, Waldemar, Charantimath, Umesh S, Chicuy, Javier, Chomba, Elwyn, Das, Prabir, Derman, Richard, Esamai, Fabian, Figueroa, Lester, Ganachari, MS, Garces, Ana, Goco, Noman, Goldenberg, Robert, Goudar, Shivaprasad, Hemingway-Foday, Jennifer, Hibberd, Patricia, Hoffman, Matthew, Honnungar, Narayan V, Jessani, Saleem, Kavi, Avinash, Kodkany, Bhalachandra, Koso-Thomas, Marion, Krebs, Nancy, Kumar Shashikanth, Yogesh, Kurhe, Kunal, Liechty, Edward, Lokangaka, Adrien, MacGuire, Emily, Mallapur, Ashalata A, McClure, Elizabeth, Metgud, Mrityunjay, Miodovnik, Menachem, Moore, Janet, Mwapule, Abigail, Mwenechanya, Musaku, Naqvi, Farnaz, Naqvi, Seemab, Nathan, Robert, Nolen, Tracy, Nyongesa, Paul, Okitawutshu, Jean, Parepalli, Suchita, Patel, Archana, Ramadurg, Umesh Y, Saleem, Sarah, Silver, Robert, Somannavar, Manjunath, Soomro, Zahid, Tshefu, Antoinette, Vernekar, Sunil S, Wallace, Dennis, Zehra, Farnaz, Hoffman, Matthew K, Goudar, Shivaprasad S, Kodkany, Bhalachandra S, Bose, Carl L, Carlo, Waldemar A, Krebs, Nancy F, Goldenberg, Robert L, Hibberd, Patricia L, Liechty, Edward A, Goco, Norman, Nolen, Tracy L, McClure, Elizabeth M, Silver, R, and Derman, Richard J
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- 2020
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19. The matching augmentation problem: a 74-approximation algorithm
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Cheriyan, J., Dippel, J., Grandoni, F., Khan, A., and Narayan, V. V.
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- 2020
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20. Magnetic Effect on High-Speed Electrochemical Discharge (HSECD) Engraving
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Harugade, Mukund L., Waigaonkar, Sachin D., Mane, Nikhil S., Hargude, Narayan V., Davim, J. Paulo, Series Editor, Shunmugam, M. S., editor, and Kanthababu, M., editor
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- 2019
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21. Bilateral facial nerve palsy associated with amphiphysin antibody in metastatic breast cancer: a case report
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Kwatra, Vineet, Charakidis, Michail, and Karanth, Narayan V.
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- 2021
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22. Avelumab Plus Talazoparib in Patients With BRCA1/2- or ATM-Altered Advanced Solid Tumors: Results From JAVELIN BRCA/ATM, an Open-Label, Multicenter, Phase 2b, Tumor-Agnostic Trial
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Schram, A, Colombo, N, Arrowsmith, E, Narayan, V, Yonemori, K, Scambia, G, Zelnak, A, Bauer, T, Jin, N, Ulahannan, S, Colleoni, M, Aftimos, P, Donoghue, M, Rosen, E, Rudneva, V, Telli, M, Domchek, S, Galsky, M, Hoyle, M, Chappey, C, Stewart, R, Blake-Haskins, J, Yap, T, Schram A. M., Colombo N., Arrowsmith E., Narayan V., Yonemori K., Scambia G., Zelnak A., Bauer T. M., Jin N., Ulahannan S. V., Colleoni M., Aftimos P., Donoghue M. T. A., Rosen E., Rudneva V. A., Telli M. L., Domchek S. M., Galsky M. D., Hoyle M., Chappey C., Stewart R., Blake-Haskins J. A., Yap T. A., Schram, A, Colombo, N, Arrowsmith, E, Narayan, V, Yonemori, K, Scambia, G, Zelnak, A, Bauer, T, Jin, N, Ulahannan, S, Colleoni, M, Aftimos, P, Donoghue, M, Rosen, E, Rudneva, V, Telli, M, Domchek, S, Galsky, M, Hoyle, M, Chappey, C, Stewart, R, Blake-Haskins, J, Yap, T, Schram A. M., Colombo N., Arrowsmith E., Narayan V., Yonemori K., Scambia G., Zelnak A., Bauer T. M., Jin N., Ulahannan S. V., Colleoni M., Aftimos P., Donoghue M. T. A., Rosen E., Rudneva V. A., Telli M. L., Domchek S. M., Galsky M. D., Hoyle M., Chappey C., Stewart R., Blake-Haskins J. A., and Yap T. A.
- Abstract
Importance: Nonclinical studies suggest that the combination of poly(ADP-ribose) polymerase and programmed cell death 1/programmed cell death-ligand 1 inhibitors has enhanced antitumor activity; however, the patient populations that may benefit from this combination have not been identified. Objective: To evaluate whether the combination of avelumab and talazoparib is effective in patients with pathogenic BRCA1/2 or ATM alterations, regardless of tumor type. Design, Setting, and Participants: In this pan-cancer tumor-agnostic phase 2b nonrandomized controlled trial, patients with advanced BRCA1/2-altered or ATM-altered solid tumors were enrolled into 2 respective parallel cohorts. The study was conducted from July 2, 2018, to April 12, 2020, at 42 institutions in 9 countries. Interventions: Patients received 800 mg of avelumab every 2 weeks and 1 mg of talazoparib once daily. Main Outcomes and Measures: The primary end point was confirmed objective response (OR) per RECIST 1.1 by blinded independent central review. Results: A total of 200 patients (median [range] age, 59.0 [26.0-89.0] years; 132 [66.0%] women; 15 [7.5%] Asian, 11 [5.5%] African American, and 154 [77.0%] White participants) were enrolled: 159 (79.5%) in the BRCA1/2 cohort and 41 (20.5%) in the ATM cohort. The confirmed OR rate was 26.4% (42 patients, including 9 complete responses [5.7%]) in the BRCA1/2 cohort and 4.9% (2 patients) in the ATM cohort. In the BRCA1/2 cohort, responses were more frequent (OR rate, 30.3%; 95% CI, 22.2%-39.3%, including 8 complete responses [6.7%]) and more durable (median duration of response: 10.9 months [95% CI, 6.2 months to not estimable]) in tumor types associated with increased heritable cancer risk (ie, BRCA1/2-associated cancer types, such as ovarian, breast, prostate, and pancreatic cancers) and in uterine leiomyosarcoma (objective response in 3 of 3 patients and with ongoing responses greater than 24 months) compared with non-BRCA-associated cancer types. Respo
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- 2023
23. Proposed strategy to sort semiconducting nanotubes by radius and chirality
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Narayan, V
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Condensed Matter - Other Condensed Matter - Abstract
We propose a strategy that uses a tunable laser and an alternating non-linear potential to sort a suspension of assorted semiconducting nanotubes. Since, a polarized exciton is a dipole, the excited nanotubes will experience a net force and may then diffuse towards an electrode. The calculated exciton binding energy suddenly drops to zero and the force on the nanotube increases dramatically when the exciton disassociates as the nanotube moves towards the electrode. The quantum adiabatic theorem shows that excitons will be polarized for potential frequencies typical for experiments $\approx 10$ MHz., Comment: probably 4 journal pages, 4 figures
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- 2005
24. A comparison of diabetes care quality in VA and commercial managed care: The Triad study.
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Kerr, EA, Gerzoff, R, Krein, SL, Selby, JV, Piette, JD, Curb, J, Herman, WH, Marrero, DG, Narayan, V, Safford, M, and Mangione, CM
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General & Internal Medicine ,Clinical Sciences - Published
- 2004
25. Avelumab Plus Talazoparib in Patients With BRCA1/2- or ATM-Altered Advanced Solid Tumors: Results From JAVELIN BRCA/ATM, an Open-Label, Multicenter, Phase 2b, Tumor-Agnostic Trial
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Schram A. M., Colombo N., Arrowsmith E., Narayan V., Yonemori K., Scambia G., Zelnak A., Bauer T. M., Jin N., Ulahannan S. V., Colleoni M., Aftimos P., Donoghue M. T. A., Rosen E., Rudneva V. A., Telli M. L., Domchek S. M., Galsky M. D., Hoyle M., Chappey C., Stewart R., Blake-Haskins J. A., Yap T. A., Schram, A, Colombo, N, Arrowsmith, E, Narayan, V, Yonemori, K, Scambia, G, Zelnak, A, Bauer, T, Jin, N, Ulahannan, S, Colleoni, M, Aftimos, P, Donoghue, M, Rosen, E, Rudneva, V, Telli, M, Domchek, S, Galsky, M, Hoyle, M, Chappey, C, Stewart, R, Blake-Haskins, J, and Yap, T
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Cancer Research ,Avelumab ,Settore MED/40 - GINECOLOGIA E OSTETRICIA ,Oncology ,BRCA1/2 ,Talazoparib ,brca - Abstract
ImportanceNonclinical studies suggest that the combination of poly(ADP-ribose) polymerase and programmed cell death 1/programmed cell death–ligand 1 inhibitors has enhanced antitumor activity; however, the patient populations that may benefit from this combination have not been identified.ObjectiveTo evaluate whether the combination of avelumab and talazoparib is effective in patients with pathogenic BRCA1/2 or ATM alterations, regardless of tumor type.Design, Setting, and ParticipantsIn this pan-cancer tumor-agnostic phase 2b nonrandomized controlled trial, patients with advanced BRCA1/2-altered or ATM-altered solid tumors were enrolled into 2 respective parallel cohorts. The study was conducted from July 2, 2018, to April 12, 2020, at 42 institutions in 9 countries.InterventionsPatients received 800 mg of avelumab every 2 weeks and 1 mg of talazoparib once daily.Main Outcomes and MeasuresThe primary end point was confirmed objective response (OR) per RECIST 1.1 by blinded independent central review.ResultsA total of 200 patients (median [range] age, 59.0 [26.0-89.0] years; 132 [66.0%] women; 15 [7.5%] Asian, 11 [5.5%] African American, and 154 [77.0%] White participants) were enrolled: 159 (79.5%) in the BRCA1/2 cohort and 41 (20.5%) in the ATM cohort. The confirmed OR rate was 26.4% (42 patients, including 9 complete responses [5.7%]) in the BRCA1/2 cohort and 4.9% (2 patients) in the ATM cohort. In the BRCA1/2 cohort, responses were more frequent (OR rate, 30.3%; 95% CI, 22.2%-39.3%, including 8 complete responses [6.7%]) and more durable (median duration of response: 10.9 months [95% CI, 6.2 months to not estimable]) in tumor types associated with increased heritable cancer risk (ie, BRCA1/2-associated cancer types, such as ovarian, breast, prostate, and pancreatic cancers) and in uterine leiomyosarcoma (objective response in 3 of 3 patients and with ongoing responses greater than 24 months) compared with non–BRCA-associated cancer types. Responses in the BRCA1/2 cohort were numerically higher for patients with tumor mutational burden of 10 or more mutations per megabase (mut/Mb) vs less than 10 mut/Mb. The combination was well tolerated, with no new safety signals identified.Conclusions and RelevanceIn this phase 2b nonrandomized controlled trial, neither the BRCA1/2 nor ATM cohort met the prespecified OR rate of 40%. Antitumor activity for the combination of avelumab and talazoparib in patients with BRCA1/2 alterations was observed in some patients with BRCA1/2-associated tumor types and uterine leiomyosarcoma; benefit was minimal in non–BRCA-associated cancer types.Trial RegistrationClinicalTrials.gov Identifier: NCT03565991
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- 2023
26. Remote assessment of disease and relapse in major depressive disorder (RADAR-MDD): a multi-centre prospective cohort study protocol
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Matcham, F., Barattieri di San Pietro, C., Bulgari, V., de Girolamo, G., Dobson, R., Eriksson, H., Folarin, A. A., Haro, J. M., Kerz, M., Lamers, F., Li, Q., Manyakov, N. V., Mohr, D. C., Myin-Germeys, I., Narayan, V., BWJH, Penninx, Ranjan, Y., Rashid, Z., Rintala, A., Siddi, S., Simblett, S. K., Wykes, T., Hotopf, M., and on behalf of the RADAR-CNS consortium
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- 2019
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27. Exploring the intersection of digital pedagogies, reflexivity, and culture in religious education
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Cochrane, T, Narayan, V, Bone, E, Deneen, C, Vanderburg, R, Kathryn, M, Brown, C, Kvia, A-S, Cochrane, T, Narayan, V, Bone, E, Deneen, C, Vanderburg, R, Kathryn, M, Brown, C, and Kvia, A-S
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This concise paper reports on the development of a Design-Based Research PhD project that explores the potential of virtual reality and digital pedagogies to enhance reflexivity in the context of religious education and cultural diversity awareness. The research is based in a Norwegian context and aims to develop transferable design principles for enhancing reflexivity in religious education for student teachers. The paper outlines the context, design framework, initial prototype intervention, initial participant feedback, as well as next steps in the research.
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- 2023
28. Monitorización de la depresión mediante el análisis de la circadianidad del ritmo cardíaco proporcionado por un dispositivo wearable
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Pérez, S., Kontaxis, S., García, E., Siddi, S., Cummins, N., Vairavan, S., Matcham, F., Haro, J.M., Hotopf, M., Lamers, F., Penninx, B., Dobson, R., Narayan, V., Bailón, R., Martín-Yebra, A., Pérez, S., Kontaxis, S., García, E., Siddi, S., Cummins, N., Vairavan, S., Matcham, F., Haro, J.M., Hotopf, M., Lamers, F., Penninx, B., Dobson, R., Narayan, V., Bailón, R., and Martín-Yebra, A.
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En este estudio se ha aplicado el método de ajuste Cosinor, por mínimos cuadrados a una función senoidal, a los datos de frecuencia cardiaca (FC) de 203 pacientes con depresión, registrados de manera continua durante un transcurso de 18 meses por un dispositivo wearable, en condiciones de vida cotidiana. El objetivo es evaluar si la posible pérdida del ritmo circadiano, modulador de la frecuencia cardiaca, esta asociada a una depresión mas severa. Estos datos coexisten con resultados de pruebas médicas para la evaluación de la sintomatología de la depresión, como el Patient Health Questionnaire (PHQ-8) [1] y el Inventory of Depressive Symptomatology (IDS) [2], que permiten determinar la presencia y gravedad del trastorno. El estudio U de Mann-Whitney sobre el ajuste Cosinor de la frecuencia cardiaca, sincronizado a los registros de PHQ-8 e IDS basales de cada paciente, ha permitido encontrar diferencias significativas según la gravedad del trastorno: la amplitud derivada del ajuste Cosinor (es decir, la oscilación de la FC a lo largo del día) es significativamente menor en aquellos pacientes con depresión severa. Este resultado se cumple en todas las ventanas temporales de datos sobre las que se ha realizado el ajuste Cosinor (1 día, 1 semana y 2 semanas), así como para los ajustes sincronizados con PHQ-8 e IDS. Esto supone una pérdida en la circadianidad cuando la depresión es severa.
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- 2023
29. Let me confess … Can a social media page create a sense of belonging?
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Cochrane, T, Narayan, V, Brown, C, MacCallum, K, Bone, E, Deneen, C, Vanderburg, R, Hurren, B, White, A, Caccamo, F, Cochrane, T, Narayan, V, Brown, C, MacCallum, K, Bone, E, Deneen, C, Vanderburg, R, Hurren, B, White, A, and Caccamo, F
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This research paper explores the ability of social media platforms, specifically Facebook pages such as UTS Confessions to influence student belonging – by providing opportunities for students to engage in the university community and build a sense of belonging. This study considers the effects of the COVID-19 pandemic on both university and online experiences and highlights the importance of university intervention in online platforms to enhance student support and engagement. By examining relevant literature and conducting interviews with students, alumni, and staff, the study provides insights and recommendations for how universities cn interact with Facebook pages to help foster a sense of belonging.
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- 2023
30. A population-based, multifaceted strategy to implement antenatal corticosteroid treatment versus standard care for the reduction of neonatal mortality due to preterm birth in low-income and middle-income countries: the ACT cluster-randomised trial
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Althabe, Fernando, Belizán, José M, McClure, Elizabeth M, Hemingway-Foday, Jennifer, Berrueta, Mabel, Mazzoni, Agustina, Ciganda, Alvaro, Goudar, Shivaprasad S, Kodkany, Bhalachandra S, Mahantshetti, Niranjana S, Dhaded, Sangappa M, Katageri, Geetanjali M, Metgud, Mrityunjay C, Joshi, Anjali M, Bellad, Mrutyunjaya B, Honnungar, Narayan V, Derman, Richard J, Saleem, Sarah, Pasha, Omrana, Ali, Sumera, Hasnain, Farid, Goldenberg, Robert L, Esamai, Fabian, Nyongesa, Paul, Ayunga, Silas, Liechty, Edward A, Garces, Ana L, Figueroa, Lester, Hambidge, K Michael, Krebs, Nancy F, Patel, Archana, Bhandarkar, Anjali, Waikar, Manjushri, Hibberd, Patricia L, Chomba, Elwyn, Carlo, Waldemar A, Mwiche, Angel, Chiwila, Melody, Manasyan, Albert, Pineda, Sayury, Meleth, Sreelatha, Thorsten, Vanessa, Stolka, Kristen, Wallace, Dennis D, Koso-Thomas, Marion, Jobe, Alan H, and Buekens, Pierre M
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- 2015
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31. Design and Implementation of High Throughput and Area Efficient Hard Decision Viterbi Decoder in 65nm Technology.
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Narayan V. Sugur, Saroja V. Siddamal, and Samba Sivam Vemala
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- 2014
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32. High-Speed Low-Power VLSI Architecture for SPST-Equipped Booth Multiplier Using Modified Carry Look Ahead Adder
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Mudhenagudi, Pratima S., Sugur, Narayan V., Siddamal, Saroja V., Banakar, R. M., Sridhar, V, editor, Sheshadri, Holalu Seenappa, editor, and Padma, M C, editor
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- 2014
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33. A clinical study in homoeopathic management of acute tonsillitis
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Rajeswari KR, Manoj Narayan V, and Murugan M
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General Medicine - Published
- 2022
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34. High Speed Low Power VLSI Architecture for SPST Adder Using Modified Carry Look Ahead Adder
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Narayan, V. S., Pratima, S. M., Saroja, V. S., Banakar, R. M., Kacprzyk, Janusz, Series editor, Kumar M., Aswatha, editor, R., Selvarani, editor, and Kumar, T V Suresh, editor
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- 2012
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35. Community engagement for birth preparedness and complication readiness in the Community Level Interventions for Pre-eclampsia (CLIP) Trial in India: a mixed-method evaluation
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Avinash Kavi, Mai-Lei Woo Kinshella, Umesh Y Ramadurg, Umesh Charantimath, Geetanjali M Katageri, Chandrashekhar C Karadiguddi, Narayan V Honnungar, Shashidhar G Bannale, Geetanjali I Mungarwadi, Jeffrey N Bone, Marianne Vidler, Laura Magee, Ashalata Mallapur, Shivaprasad S Goudar, Mrutyunjaya Bellad, Richard Derman, Peter von Dadelszen, and The CLIP India Working Group
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General Medicine - Abstract
ObjectiveTo describe the process of community engagement (CE) in northern Karnataka, India and its impact on pre-eclampsia knowledge, birth preparedness and complication readiness, pregnancy-related care seeking and maternal morbidity.DesignThis study was a secondary analysis of a cluster randomised trial of Community Level Interventions for Pre-eclampsia (CLIP). A total of 12 clusters based on primary health centre catchment areas were randomised to intervention or control. CE was conducted in intervention clusters. CE attendance was summarised according to participant group using both quantitative and qualitative assessment. Pre-eclampsia knowledge, birth preparedness, health services engagement and perinatal outcomes was evaluated within trial surveillance. Outcomes were compared between trial arms using a mixed effects logistic regression model on RStudio (RStudio, Boston, USA). Community feedback notes were thematically analysed on NVivo V.12 (QSR International, Melbourne, Australia).SettingBelagavi and Bagalkote districts in rural Karnataka, India.ParticipantsPregnant women and women of reproductive age, mothers and mothers-in-law, community stakeholders and male household decision-makers and health workers.ResultsA total of 1379 CE meetings were conducted with 39 362 participants between November 2014 and October 2016. CE activities may have had an effect on modifying community attitudes towards hypertension in pregnancy and its complications. However, rates of pre-eclampsia knowledge, birth preparedness, health services engagement and maternal morbidities among individual pregnant women were not significantly impacted by CE activities in their area.ConclusionEvaluation of our CE programme in India demonstrates the feasibility of reaching pregnant women alongside household decision-makers, community stakeholders and health workers. More research is needed to explore the pathways of impact between broad community mobilisation to strengthen support for maternal care seeking and clinical outcomes of individual pregnant women.Trial registration numberNCT01911494.
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- 2023
36. Community engagement for birth preparedness and complication readiness in the Community Level Interventions for Pre-eclampsia (CLIP) Trial in India: a mixed-method evaluation
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Kavi, Avinash, primary, Kinshella, Mai-Lei Woo, additional, Ramadurg, Umesh Y, additional, Charantimath, Umesh, additional, Katageri, Geetanjali M, additional, Karadiguddi, Chandrashekhar C, additional, Honnungar, Narayan V, additional, Bannale, Shashidhar G, additional, Mungarwadi, Geetanjali I, additional, Bone, Jeffrey N, additional, Vidler, Marianne, additional, Magee, Laura, additional, Mallapur, Ashalata, additional, Goudar, Shivaprasad S, additional, Bellad, Mrutyunjaya, additional, Derman, Richard, additional, von Dadelszen, Peter, additional, and Working Group, The CLIP India, additional
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- 2022
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37. Quantum-chemical (DFT, MP2) and spectroscopic studies (FT-IR and UV) of monomeric and dimeric structures of 2(3H)-Benzothiazolone
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Sinha, L., Prasad, O., Karabacak, M., Mishra, H.N., Narayan, V., and Asiri, A.M.
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- 2014
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38. Blood pressure thresholds in pregnancy for identifying maternal and infant risk: a secondary analysis of Community-Level Interventions for Pre-eclampsia (CLIP) trial data
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Amjad Hussain, Charfudin Sacoor, Faustino Vilanculo, Analisa Matavele, Dulce Mulungo, Orvalho Augusto, Salésio Macuacua, Sana Sheikh, Guy A. Dumont, Gudadayya S Kengapur, Avinash Kavi, Jim G Thornton, Anjali M Joshi, Marta Macamo, Khátia Munguambe, Shashidhar G Bannale, Javed Memon, Brian Darlow, Andrew Shennan, Umesh Charantimath, Vivalde Nobela, Laura A. Magee, Olalekan O. Adetoro, Esperança Sevene, Farrukh Raza, Nadine Schuurman, Ana Pilar Betrán, J. Mark Ansermino, Chirag Kariya, Geetanjali I Mungarwadi, Richard J. Derman, Mario Merialdi, Bhalachandra S. Kodkany, Mansun Lui, Felizarda Amose, Chandrappa C Karadiguddi, Peter von Dadelszen, Corsino Tchavana, Tang Lee, Jing Li, Cláudio Nkumbula, Eileen Hutton, Tabassum Firoz, Zulfiqar A Bhutta, Simon Lewin, Amit P. Revankar, Namdev A Kamble, Zefanias Nhamirre, Rogério Chiaú, Uday S Kudachi, Narayan V Honnungar, Ashalata Mallapur, Silvestre Cutana, Dustin Dunsmuir, Eusebio Macete, Craig Mitton, Mai-Lei Woo Kinshella, Ariel Nhancolo, Zahra Hoodbhoy, William A. Grobman, John Sotunsa, Rosa Pires, Hannah L. Nathan, Geetanjali Katageri, Veronique Fillipi, Helena Boene, Sibone Mocumbi, Vaibhav B Dhamanekar, Diane Sawchuck, Gwyneth Lewis, Shafik Dharamsi, Emília Gonçálves, Susheela M Engelbrecht, Beth A. Payne, Lehana Thabane, Paulo Filimone, Ana Langer, Anifa Vala, Joel Singer, Mrutyunjaya B Bellad, Ana Ilda Biz, Romano Nkumbwa Byaruhanga, Sumedha Sharma, Sonia Maculuve, Hubert Wong, Jeffrey N Bone, Rahat Qureshi, Domena Tu, Imran Ahmed, Sharla Drebit, Cassimo Bique, Keval S Chougala, Ugochi V Ukah, Sphoorthi S Mastiholi, Shivaprasad S. Goudar, Umesh Y Ramdurg, Marian Knight, Ernesto Mandlate, and Marianne Vidler
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Adult ,medicine.medical_specialty ,Adolescent ,Hypertension in Pregnancy ,Psychological intervention ,India ,Blood Pressure ,Risk Assessment ,Corrections ,Young Adult ,Pre-Eclampsia ,Maximum blood pressure ,Pregnancy ,Reference Values ,Secondary analysis ,medicine ,Humans ,Pakistan ,Community Health Services ,Child ,Mozambique ,Eclampsia ,Obstetrics ,business.industry ,General Medicine ,Middle Aged ,medicine.disease ,Blood pressure ,Relative risk ,Female ,business - Abstract
Blood pressure measurement is a marker of antenatal care quality. In well resourced settings, lower blood pressure cutoffs for hypertension are associated with adverse pregnancy outcomes. We aimed to study the associations between blood pressure thresholds and adverse outcomes and the diagnostic test properties of these blood pressure cutoffs in low-resource settings.We did a secondary analysis of data from 22 intervention clusters in the Community-Level Interventions for Pre-eclampsia (CLIP) cluster randomised trials (NCT01911494) in India (n=6), Mozambique (n=6), and Pakistan (n=10). We included pregnant women aged 15-49 years (12-49 years in Mozambique), identified in their community by trained community health workers, who had data on blood pressure measurements and outcomes. The trial was unmasked. Maximum blood pressure was categorised as: normal blood pressure (systolic blood pressure [sBP]120 mm Hg and diastolic blood pressure [dBP]80 mm Hg), elevated blood pressure (sBP 120-129 mm Hg and dBP80 mm Hg), stage 1 hypertension (sBP 130-139 mm Hg or dBP 80-89 mm Hg, or both), non-severe stage 2 hypertension (sBP 140-159 mm Hg or dBP 90-109 mm Hg, or both), or severe stage 2 hypertension (sBP ≥160 mm Hg or dBP ≥110 mm Hg, or both). We classified women according to the maximum blood pressure category reached across all visits for the primary analyses. The primary outcome was a maternal, fetal, or neonatal mortality or morbidity composite. We estimated dose-response relationships between blood pressure category and adverse outcomes, as well as diagnostic test properties.Between Nov 1, 2014, and Feb 28, 2017, 21 069 women (6067 in India, 4163 in Mozambique, and 10 839 in Pakistan) contributed 103 679 blood pressure measurements across the three CLIP trials. Only women with non-severe or severe stage 2 hypertension, as discrete diagnostic categories, experienced more adverse outcomes than women with normal blood pressure (risk ratios 1·29-5·88). Using blood pressure categories as diagnostic thresholds (women with blood pressure within the category or any higher category vs those with blood pressure in any lower category), dose-response relationships were observed between increasing thresholds and adverse outcomes, but likelihood ratios were informative only for severe stage 2 hypertension and maternal CNS events (likelihood ratio 6·36 [95% CI 3·65-11·07]) and perinatal death (5·07 [3·64-7·07]), particularly stillbirth (8·53 [5·63-12·92]).In low-resource settings, neither elevated blood pressure nor stage 1 hypertension were associated with maternal, fetal, or neonatal mortality or morbidity adverse composite outcomes. Only the threshold for severe stage 2 hypertension met diagnostic test performance standards. Current diagnostic thresholds for hypertension in pregnancy should be retained.University of British Columbia, the BillMelinda Gates Foundation.
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- 2021
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39. LBA69 Belzutifan, a HIF-2α Inhibitor, for von Hippel-Lindau (VHL) disease-associated neoplasms: 36 months of follow-up of the phase II LITESPARK-004 study
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Srinivasan, R., primary, Iliopoulos, O., additional, Rathmell, W.K., additional, Narayan, V., additional, Maughan, B.L., additional, Oudard, S., additional, Else, T., additional, Maranchie, J.K., additional, Welsh, S.J., additional, Iversen, A.B. Bøndergaard, additional, Chen, K., additional, Perini, R.F., additional, Liu, Y., additional, Linehan, W.M., additional, and Jonasch, E., additional
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- 2022
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40. Molecular structure, electronic properties, NLO, NBO analysis and spectroscopic characterization of Gabapentin with experimental (FT-IR and FT-Raman) techniques and quantum chemical calculations
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Sinha, Leena, Karabacak, Mehmet, Narayan, V., Cinar, Mehmet, and Prasad, Onkar
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- 2013
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41. 1604P PSMA-targeted radioligand therapy (RLT) with 131I-LNTH-1095 (1095) plus enzalutamide (enza) vs enza alone in chemotherapy-naïve patients (pts) whose piflufolastat F 18-avid metastatic castration-resistant prostate cancer (mCRPC) progressed on abiraterone (abi): ARROW
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Yu, E.Y., Narayan, V., Esposito, G., Szmulewitz, R., Lu, Y., Lilly, M., Calais, J., Bratslavsky, G., Vasanawala, M., Ulaner, G.A., Pouliot, F., Laidley, D., Fleshner, N., Saad, F., and Menda, Y.
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- 2024
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42. 1597MO Clinical activity of BMS-986365 (CC-94676), a dual androgen receptor (AR) ligand-directed degrader and antagonist, in heavily pretreated patients (pts) with metastatic castration-resistant prostate cancer (mCRPC)
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Rathkopf, D., Patel, M.R., Choudhury, A.D., Rasco, D., Lakhani, N.J., Hawley, J., Srinivas, S., Aparicio, A., Narayan, V., Runcie, K., Emamekhoo, H., Reichert, Z., Nguyen, H., Wells, A., Kandimalla, R., Suryawanshi, S., Wu, J., Arora, V., Pourdehnad, M., and Armstrong, A.J.
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- 2024
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43. An Intervention to Enhance Obstetric and Newborn Care in India: A Cluster Randomized-Trial
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Goudar, Shivaprasad S., Derman, Richard J., Honnungar, Narayan V., Patil, Kamal P., Swamy, Mallaiah K., Moore, Janet, and Wallace, Dennis D.
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Health care industry - Abstract
Objectives This study assessed whether community mobilization and interventions to improve emergency obstetric and newborn care reduced perinatal mortality (PMR) and neonatal mortality rates (NMR) in Belgaum, India. Methods The cluster-randomised controlled trial was conducted in Belgaum District, Karnataka State, India. Twenty geographic clusters were randomized to control or the intervention. The intervention engaged and mobilized community and health authorities to leverage support; strengthened community-based stabilization, referral, and transportation; and aimed to improve quality of care at facilities. Results 17,754 Intervention births and 15,954 control births weighing [greater than or equal to]1000 g, respectively, were enrolled and analysed. Comparing the baseline period to the last 6 months period, the NMR was lower in the intervention versus control clusters (OR 0.60, 95 % CI 0.34-1.06, p = 0.076) as was the PMR (OR 0.74, 95 % CI 0.46-1.19, p = 0.20) although neither reached statistical significance. Rates of facility birth and caesarean section increased among both groups. There was limited influence on quality of care measures. Conclusions for Practice The intervention had large but not statistically significant effects on neonatal and perinatal mortality. Community mobilization and increased facility care may ultimately improve neonatal and perinatal survival, and are important in the context of the global transition towards institutional delivery., Author(s): Shivaprasad S. Goudar [sup.1] , Richard J. Derman [sup.2] , Narayan V. Honnungar [sup.1] , Kamal P. Patil [sup.1] , Mallaiah K. Swamy [sup.1] , Janet Moore [sup.3] , [...]
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- 2015
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44. The usability of daytime and night-time heart rate dynamics as digital biomarkers of depression severity.
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Siddi, S., Bailon, R., Giné-Vázquez, I., Matcham, F., Lamers, F., Kontaxis, S., Laporta, E., Garcia, E., Lombardini, F., Annas, P., Hotopf, M., Penninx, B. W. J. H., Ivan, A., White, K. M., Difrancesco, S., Locatelli, P., Aguiló, J., Peñarrubia-Maria, M. T., Narayan, V. A., and Folarin, A.
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BIOMARKERS ,STATISTICS ,HUMAN research subjects ,TIME ,MULTIVARIATE analysis ,WEARABLE technology ,REGRESSION analysis ,SEVERITY of illness index ,INFORMED consent (Medical law) ,MENTAL depression ,HEART beat ,QUESTIONNAIRES ,ALCOHOL drinking ,DESCRIPTIVE statistics ,RESEARCH funding ,SOCIODEMOGRAPHIC factors ,BODY mass index ,SMOKING ,DATA analysis ,DATA analysis software ,LONGITUDINAL method ,COMORBIDITY - Abstract
Background: Alterations in heart rate (HR) may provide new information about physiological signatures of depression severity. This 2-year study in individuals with a history of recurrent major depressive disorder (MDD) explored the intra-individual variations in HR parameters and their relationship with depression severity. Methods: Data from 510 participants (Number of observations of the HR parameters = 6666) were collected from three centres in the Netherlands, Spain, and the UK, as a part of the remote assessment of disease and relapse-MDD study. We analysed the relationship between depression severity, assessed every 2 weeks with the Patient Health Questionnaire-8, with HR parameters in the week before the assessment, such as HR features during all day, resting periods during the day and at night, and activity periods during the day evaluated with a wrist-worn Fitbit device. Linear mixed models were used with random intercepts for participants and countries. Covariates included in the models were age, sex, BMI, smoking and alcohol consumption, antidepressant use and co-morbidities with other medical health conditions. Results: Decreases in HR variation during resting periods during the day were related with an increased severity of depression both in univariate and multivariate analyses. Mean HR during resting at night was higher in participants with more severe depressive symptoms. Conclusions: Our findings demonstrate that alterations in resting HR during all day and night are associated with depression severity. These findings may provide an early warning of worsening depression symptoms which could allow clinicians to take responsive treatment measures promptly. [ABSTRACT FROM AUTHOR]
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- 2023
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45. Tumor Embolization through Meningohypophyseal and Inferolateral Trunks is Safe and Effective
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Raz, E., primary, Cavalcanti, D.D., additional, Sen, C., additional, Nossek, E., additional, Potts, M., additional, Peschillo, S., additional, Lotan, E., additional, Narayan, V., additional, Ali, A., additional, Sharashidze, V., additional, Nelson, P.K., additional, and Shapiro, M., additional
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- 2022
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46. Remote Assessment of Disease and Relapse in Major Depressive Disorder (RADAR-MDD): Recruitment, retention, and data availability in a longitudinal remote measurement study
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Matcham, F., primary, Leightley, D., additional, Siddi, S., additional, Lamers, F., additional, White, K., additional, Annas, P., additional, De Girolamo, G., additional, Difrancesco, S., additional, Haro, J.M., additional, Horsfall, M., additional, Ivan, A., additional, Lavelle, G., additional, Li, Q., additional, Lombardini, F., additional, Mohr, D., additional, Narayan, V., additional, Oetzmann, C., additional, Penninx, B., additional, Simblett, S., additional, Bruce, S., additional, Nica, R., additional, Wykes, T., additional, Brasen, J., additional, Myin-Germeys, I., additional, Rintala, A., additional, Conde, P., additional, Dobson, R., additional, Folarin, A., additional, Stewart, C., additional, Ranjan, Y., additional, Rashid, Z., additional, Cummins, N., additional, Manyakov, N., additional, Vairavan, S., additional, and Hotopf, M., additional
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- 2022
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47. CANSAT : Cancer Surveillance And Analysis Tool Using Geospatial Techniques
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Vishnu Narayan, V, primary, Pathinarupothi, Rahul Krishnan, additional, Harshavardhan Rao, B, additional, and Nair, Priya, additional
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- 2022
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48. The Community-Level Interventions for Pre-eclampsia (CLIP) cluster randomised trials in Mozambique, Pakistan, and India: an individual participant-level meta-analysis
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Umesh Y Ramdurg, Shivaprasad S. Goudar, Marian Knight, Laura A. Magee, Craig Mitton, Sonia Maculuve, Simon Lewin, Ana Pilar Betrán, Avinash Kavi, Ernesto Mandlate, Guy A. Dumont, Cassimo Bique, Marianne Vidler, Salésio Macuacua, Veronique Fillipi, Ashalata Mallapur, Paulo Filimone, Shafik Dharamsi, Rogério Chiaú, Ariel Nhancolo, Sibone Mocumbi, Vaibhav B Dhamanekar, Zefanias Nhamirre, Narayan V Honnungar, Chirag Kariya, Cláudio Nkumbula, Corsino Tchavana, Olalekan O. Adetoro, Tabassum Firoz, Emília Gonçálves, Zahra Hoodbhoy, Geetanjali Katageri, Namdev A Kamble, William A. Grobman, Felizarda Amose, Keval S Chougala, Joel Singer, Susheela M Engelbrecht, Chandrappa C Karadiguddi, Mrutyunjaya B Bellad, Andrew Shennan, Ana Ilda Biz, Richard J. Derman, Sumedha Sharma, Geetanjali I Mungarwadi, Nadine Schuurman, J. Mark Ansermino, Anjali M Joshi, Rahat Qureshi, John Sotunsa, Javed Memon, Jeffrey N Bone, Bhalachandra S. Kodkany, Domena Tu, Sana Sheikh, Imran Ahmed, Helena Boene, Ana Langer, Mansun Lui, Eusebio Macete, Tang Lee, Sharla Drebit, Amjad Hussain, Mai Lei Woo Kinshella, Shashidhar G Bannale, Anifa Vala, Beth A. Payne, Diane Sawchuck, Gwyneth Lewis, Gudadayya S Kengapur, Uday S Kudachi, Vivalde Nobela, Jim G Thornton, Umesh Charantimath, Jing Li, Amit P. Revankar, Esperança Sevene, Rosa Pires, Hubert Wong, Zulfiqar A Bhutta, Ugochi V Ukah, Sphoorthi S Mastiholi, Analisa Matavele, Farrukh Raza, Marta Macamo, Peter von Dadelszen, Charfudin Sacoor, Faustino Vilanculo, Orvalho Augusto, Dulce Mulungo, Khátia Munguambe, Silvestre Cutana, and Dustin Dunsmuir
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Adult ,Gestational hypertension ,medicine.medical_specialty ,Adolescent ,Referral ,Psychological intervention ,India ,030204 cardiovascular system & hematology ,Young Adult ,03 medical and health sciences ,0302 clinical medicine ,Pre-Eclampsia ,Pregnancy ,Intervention (counseling) ,Humans ,Medicine ,Pakistan ,Community Health Services ,030212 general & internal medicine ,Child ,Adverse effect ,Mozambique ,Randomized Controlled Trials as Topic ,Eclampsia ,business.industry ,Obstetrics ,Pregnancy Outcome ,General Medicine ,Odds ratio ,Middle Aged ,medicine.disease ,Community health ,Maternal Death ,Female ,business - Abstract
Summary Background To overcome the three delays in triage, transport and treatment that underlie adverse pregnancy outcomes, we aimed to reduce all-cause adverse outcomes with community-level interventions targeting women with pregnancy hypertension in three low-income countries. Methods In this individual participant-level meta-analysis, we de-identified and pooled data from the Community-Level Interventions for Pre-eclampsia (CLIP) cluster randomised controlled trials in Mozambique, Pakistan, and India, which were run in 2014–17. Consenting pregnant women, aged 12–49 years, were recruited in their homes. Clusters, defined by local administrative units, were randomly assigned (1:1) to intervention or control groups. The control groups continued local standard of care. The intervention comprised community engagement and existing community health worker-led mobile health-supported early detection, initial treatment, and hospital referral of women with hypertension. For this meta-analysis, as for the original studies, the primary outcome was a composite of maternal or perinatal outcome (either maternal, fetal, or neonatal death, or severe morbidity for the mother or baby), assessed by unmasked trial surveillance personnel. For this analysis, we included all consenting participants who were followed up with completed pregnancies at trial end. We analysed the outcome data with multilevel modelling and present data with the summary statistic of adjusted odds ratios (ORs) with 95% CIs (fixed effects for maternal age, parity, maternal education, and random effects for country and cluster). This meta-analysis is registered with PROSPERO, CRD42018102564. Findings Overall, 44 clusters (69 330 pregnant women) were randomly assigned to intervention (22 clusters [36 008 pregnancies]) or control (22 clusters [33 322 pregnancies]) groups. 32 290 (89·7%) pregnancies in the intervention group and 29 698 (89·1%) in the control group were followed up successfully. Median maternal age of included women was 26 years (IQR 22–30). In the intervention clusters, 6990 group and 16 691 home-based community engagement sessions and 138 347 community health worker-led visits to 20 819 (57·8%) of 36 008 women (of whom 11 095 [53·3%] had a visit every 4 weeks) occurred. Blood pressure and dipstick proteinuria were assessed per protocol. Few women were eligible for methyldopa for severe hypertension (181 [1%] of 20 819) or intramuscular magnesium sulfate for pre-eclampsia (198 [1%]), of whom most accepted treatment (162 [89·5%] of 181 for severe hypertension and 133 [67·2%] of 198 for pre-eclampsia). 1255 (6%) were referred to a comprehensive emergency obstetric care facility, of whom 864 (82%) accepted the referral. The primary outcome was similar in the intervention (7871 [24%] of 32 290 pregnancies) and control clusters (6516 [22%] of 29 698; adjusted OR 1·17, 95% CI 0·90–1·51; p=0·24). No intervention-related serious adverse events occurred, and few adverse effects occurred after in-community treatment with methyldopa (one [2%] of 51; India only) and none occurred after in-community treatment with magnesium sulfate or during transport to facility. Interpretation The CLIP intervention did not reduce adverse pregnancy outcomes. Future community-level interventions should expand the community health worker workforce, assess general (rather than condition-specific) messaging, and include health system strengthening. Funding University of British Columbia, a grantee of the Bill & Melinda Gates Foundation.
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- 2020
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49. Pregnancy outcomes and blood pressure visit-to-visit variability and level in three less-developed countries
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Laura A. Magee, Jeffrey Bone, Salwa Banoo Owasil, Joel Singer, Terry Lee, Mrutunjaya B. Bellad, Shivaprasad S Goudar, Alexander G. Logan, Salésio E. Macuacua, Ashalata A. Mallapur, Hannah L. Nathan, Rahat N. Qureshi, Esperança Sevene, Andrew H. Shennan, Anifa Valá, Marianne Vidler, Zulfiqar A. Bhutta, Peter von Dadelszen, Eusébio Macete, Khátia Munguambe, Charfudin Sacoor, Helena Boene, Felizarda Amose, Rosa Pires, Zefanias Nhamirre, Marta Macamo, Rogério Chiaú, Analisa Matavele, Faustino Vilanculo, Ariel Nhancolo, Silvestre Cutana, Ernesto Mandlate, Cassimo Bique, Sibone Mocumbi, Emília Gonçálves, Sónia Maculuve, Ana Ilda Biz, Dulce Mulungo, Orvalho Augusto, Paulo Filimone, Vivalde Nobela, Corsino Tchavana, Cláudio Nkumbula, Zahra Hoodbhoy, Farrukh Raza, Sana Sheikh, Javed Memon, Imran Ahmed, Amjad Hussain, Umesh S Charantimath, Geetanjali M Katageri, Avinash J Kavi, Amit P Revankar, Umesh Y Ramdurg, Shashidhar G Bannale, Vaibhav B Dhamanekar, Geetanjali I Mungarwadi, Narayan V Honnungar, Bhalachandra S Kodkany, Anjali M Joshi, Uday S Kudachi, Sphoorthi S Mastiholi, Chandrappa C Karadiguddi, Gudadayya S Kengapur, Namdev A Kamble, Keval S Chougala, Dustin T Dunsmuir, Sharla K Drebit, Chirag Kariya, Mai-Lei Woo Kinshella, Tang Lee, Jing Li, Mansun Lui, Beth A Payne, Diane Sawchuck, Sumedha Sharma, Domena K Tu, Ugochi V Ukah, J Mark Ansermino, Ana Pilar Betrán, Richard Derman, Shafik Dharamsi, France Donnay, Sharla Drebit, Guy Dumont, Susheela M Engelbrecht, Veronique Fillipi, Tabassum Firoz, William Grobman, Marian Knight, Ana Langer, Simon Lewin, Gwyneth Lewis, Craig Mitton, Nadine Schuurman, Jim Thornton, Hubert Wong, Olalekan O Adetoro, John O Sotunsa, Romano Nkumbwa Byaruhanga, Brian Darlow, Eileen Hutton, Mario Merialdi, Lehana Thabane, and Group†, CLIP Study
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Adult ,medicine.medical_specialty ,Adolescent ,Developing country ,India ,morbidity ,030204 cardiovascular system & hematology ,Preeclampsia ,preeclampsia ,03 medical and health sciences ,Young Adult ,0302 clinical medicine ,Pregnancy ,Internal Medicine ,medicine ,Humans ,Pakistan ,030212 general & internal medicine ,Pregnancy outcomes ,Child ,Mozambique ,Obstetrics ,business.industry ,Pregnancy Outcome ,Correction ,blood pressure ,Hypertension, Pregnancy-Induced ,Original Articles ,Middle Aged ,medicine.disease ,mortality ,Blood pressure ,Maternal Mortality ,ComputingMethodologies_DOCUMENTANDTEXTPROCESSING ,Female ,business - Abstract
Supplemental Digital Content is available in the text., In pregnancy in well-resourced settings, limited data suggest that higher blood pressure (BP) visit-to-visit variability may be associated with adverse pregnancy outcomes. Included were pregnant women in 22 intervention clusters of the CLIP (Community-Level Interventions for Preeclampsia) cluster randomized trials, who had received at least 2 prenatal contacts from a community health worker, including standardized BP measurement. Mixed-effects adjusted logistic regression assessed relationships between pregnancy outcomes and both BP level (median [interquartile range]) and visit-to-visit variability (SD and average real variability [ARV], adjusted for BP level), among all women and those who became hypertensive. The primary outcome was the CLIP composite of maternal and perinatal mortality and morbidity. Among 17 770 pregnancies, higher systolic and diastolic BP levels were associated with increased odds of the composite outcome per 5 mm Hg increase in BP (odds ratio [OR], 1.05 [95% CI, 1.03–1.07] and OR, 1.08 [1.06–1.11], respectively). Higher BP visit-to-visit variability was associated with increased odds, per a SD increase in BP variability measure, of (1) hypertension (systolic: OR, 2.09 [1.98–2.21] for SD and 1.52 [1.45–1.60] for ARV; diastolic: OR, 2.70 [2.54–2.87] for SD and 1.86 [1.76–1.96] for ARV); and (2) the composite outcome (systolic: OR, 1.10 [1.06–1.14] for SD and 1.06 [1.02–1.10] for ARV; diastolic: OR, 1.07 [1.03–1.11] for SD and 1.06 [1.02–1.09] for ARV). In 3 less-developed countries, higher BP level and visit-to-visit variability predicted adverse pregnancy outcomes, providing an opportunity for high-definition medicine.
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- 2022
50. IDF21-0046 Higher rates of DKA and intensive care admission among children newly diagnosed with T1D during the COVID 19 pandemic
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Al-abdulrazzaq, D., Alkandari, A., Ahusaini, F., Alenazi, N., Gujral, U., Narayan, V., and Al-kandari, H.
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- 2022
- Full Text
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