Publications by authors named "Poddar B"

Article Synopsis
  • There is a growing global concern about antimicrobial resistance, particularly with the rise of carbapenem and colistin resistance, especially in ICU settings of Southeast Asia like India.
  • The study focused on analyzing the clinical outcomes of ICU patients who had polymyxin B/E (colistin) resistant infections by comparing them to those with sensitive infections, collecting various clinical and demographic data.
  • Conducted in a northern India ICU, the research included 28 patients with resistant infections and 55 controls, assessing factors such as ICU stay length and treatment outcomes using established statistical methods.
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Aim And Background: Neutrophil CD64 (nCD64) is evolving as a prognostic biomarker in sepsis. The primary objective of this study was to evaluate whether serial trend of nCD64, procalcitonin (PCT), and C-reactive protein (CRP) predict 28-day mortality in patients with sepsis/septic shock, as per Sepsis-3 criteria.

Materials And Methods: This prospective, observational single-center cohort study included 60 adult patients (age ≥18 years) with sepsis.

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Unlabelled: Dengue is one of the commonest causes of undifferentiated acute febrile illness in India as well as South East Asia. Nearly two-fifths of the world population is at risk of infection, and nearly 96 million infections reported worldwide, it is a major cause of concern across the globe. The ISCCM leadership felt that there have been no new directives/guidelines except the MOH guidelines for the management of dengue fever since 2014.

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Article Synopsis
  • Despite advancements in understanding denitrifying methylotrophy, the biochemistry of nitrate-dependent methane oxidation in certain bacteria remains unclear.
  • Researchers isolated novel C1-carbon-metabolizing bacteria from a landfill, identifying three species capable of methane metabolism with nitrate as an electron acceptor.
  • The isolates demonstrated significant methane oxidation (60-85%) along with substantial nitrate reduction (56-62%), highlighting a potential link between these two processes in methane emissions.
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Following vaccination with adenoviral vector-based ChAdOx1 nCoV-19, serious neurological adverse events have been reported. Here we report two cases who presented with quadriparesis following the adenoviral vector-based ChAdOx1 nCoV-19 vaccine. A 55-year-old male patient presented with quadriparesis after 8 days of the second dose of ChAdOx1 nCoV-19 vaccination.

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Background: The aim of this study was to access the incidence of prolonged QTc interval and changes, if any, among Indian healthcare workers (HCWs) taking hydroxychloroquine (HCQ) prophylaxis while managing coronavirus disease 2019 (COVID-19) cases.

Methods: At the beginning of the COVID-19 pandemic, as per the Indian Council of Medical Research (ICMR) policy, HCWs were advised to take HCQ as prophylaxis after getting an electrocardiogram (ECG) while being posted to look after COVID-19 patients. A follow-up ECG was repeated for those who took HCQ.

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Poddar B. Expanding the Scope of Flexible Fiberoptic Bronchoscopy in the PICU. Indian J Crit Care Med 2023;27(5):303-304.

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Objective: To compare first attempt success rate for ultrasound-guided (USG) versus direct palpation (DP) for radial, femoral, and dorsalis pedis artery cannulations in adult intensive care unit (ICU) patients.

Design: Prospective randomized clinical trial.

Setting: Mixed adult ICU of a University Hospital.

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Nallasamy K, Poddar B. Ultrasound in Refractory Septic Shock: Have We Pitched and Pictured It Correctly Yet? Indian J Crit Care Med 2022;26(7):773-774.

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Prebiotics as a part of dietary nutrition can play a crucial role in structuring the composition and metabolic function of intestinal microbiota and can thus help in managing a clinical scenario by preventing diseases and/or improving health. Among the different prebiotics, non-digestible carbohydrates are molecules that selectively enrich a typical class of bacteria with probiotic potential. This review summarizes the current knowledge about the different aspects of prebiotics, such as its production, characterization and purification by various techniques, and its link to novel product development at an industrial scale for wide-scale use in diverse range of health management applications.

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Background: The guidelines of the Surviving Sepsis Campaign suggest using invasive blood pressure (IBP) measurement in septic shock patients, without specifying for a preferred arterial site for accuracy in relation to the severity of septic shock. The objective of this study was to determine the mean arterial pressure (MAP) gradient between the femoral and radial artery sites in septic shock patients.

Method: This prospective study was carried out at a 20-bed ICU in a university hospital.

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Objective: Evaluation of glucometrics in the first week of ICU stay and its association with outcomes.

Design: Prospective observational study.

Setting: Mixed ICU of teaching hospital.

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In the present study, the microbial community residing at different depths of the landfill was characterized to assess their roles in serving as a methane sink. Physico-chemical characterization revealed the characteristic signatures of anaerobic degradation of organic matter in the bottom soil (50-60 cm) and, active process of aerobic denitrification in the top soil (0-10 cm). This was also reflected from the higher abundance of bacterial domain in the top soil metagenome represented by dominant phyla Proteobacteria and Actinobacteria which are prime decomposers of organic matter in landfill soils.

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Culture-independent sequence data from various environmental samples have revealed an immense microbial diversity of environmental, clinical, and industrial importance that has not yet been cultured. Cultivation is imperative to validate findings emerging from cultivation-independent molecular data and exploit the isolated organisms for biotechnological purposes. Efforts have been made to boost the cultivability of microbes from environmental samples by use of a range of techniques and instrumentation.

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Volatile fatty acids (VFA), the secondary metabolite of microbial fermentation, are used in a wide range of industries for production of commercially valuable chemicals. In this review, the fermentative production of VFAs by both pure as well mixed microbial cultures is highlighted along with the strategies for enhancing the VFA production through innovations in existing approaches. Role of conventionally applied tools for the optimization of operational parameters such as pH, temperature, retention time, organic loading rate, and headspace pressure has been discussed.

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Poddar B Critically Ill Pediatric Oncology Patients: A Difficult-to-treat Population. Indian J Crit Care Med 2021;25(10):1091-1092.

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Bacterial species capable of performing both nitrification and denitrification in a single vessel under similar conditions have gained significance in the wastewater treatment scenario considering their unique character of performing the above reactions under heterotrophic and aerobic conditions respectively. Such a novel strategy often referred to as simultaneous nitrification and denitrification (SND) has a tremendous potential in dealing with various wastewaters having low C : N content, considering that the process needs very little or no external carbon source and oxygen supply thus adding to its cost-effective and environmentally friendly nature. Though like other micro-organisms, heterotrophic nitrifiers and aerobic denitrifiers convert inorganic or organic nitrogen-containing substances into harmless dinitrogen gas in the wastewater, their ecophysiological role in the global nitrogen cycle is still not fully understood.

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RNA viruses are not only reported for viral pandemics but also as important agents for emerging/re-emerging diseases. (JEV) is reported to cause epidemics of encephalitis in Southeast Asia, India, Korea, China, and Indonesia. In addition, several reports show that JEV has spread to new populations beyond these geographical regions.

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Clinical pulmonary infection score (CPIS) is an established diagnostic parameter for ventilator-associated pneumonia (VAP). Lung ultrasound (LUS) is an evolving tool for diagnosing VAP. Various scores have been proposed for the diagnosis of VAP, taking LUS as a parameter.

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Article Synopsis
  • The study aimed to identify risk factors that can be modified to reduce the occurrence of ventilator-associated events (VAE) in patients on mechanical ventilation in an ICU setting.
  • Among the 247 patients studied, there were 59 episodes of VAE, with significant risk factors including high cumulative fluid balance and prolonged vasopressor support.
  • Patients with VAE experienced longer ventilation durations, extended ICU stays, and higher mortality rates, suggesting the need for targeted interventions to lower VAE rates.
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: The current pandemic of novel Corona Virus Disease 2019 (COVID-19) has created a significant shortage of personal protective equipment (PPE) in many countries of the world, stressing medical services during this crisis. Along with addressing problems of demand and supply mismatch, there also a need to ensure the procurement of high-quality PPEs that provides both safety and comfort to users. The purpose of this article is to review existing standards and recommendations on the technical aspects of PPE.

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Poddar B. Withdraw Sedation Gently or Face Withdrawal Syndrome! Indian J Crit Care Med 2020;24(6):381-382.

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Administration of intravenous fluids is the most common therapy given to patients admitted to a hospital. Evidence suggests that the use of normal saline (NS) in large quantities is not without adverse effects. Balanced salt solutions (BSS) contain bicarbonate or one of its precursors that act as a buffer, and the electrolyte composition resembles that of plasma.

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