Publications by authors named "Reddi B"

Objective: Extracorporeal membrane oxygenation (ECMO) is a high-risk procedure with significant morbidity and mortality and there is an uncertain volume-outcome relationship, especially regarding long-term functional outcomes. The aim of this study was to examine the association between ECMO centre volume and long-term death and disability outcomes.

Design Setting And Participants: This is a registry-embedded observational cohort study.

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Since 2018, DonateLife South Australia and the Royal Adelaide Hospital (RAH) have collaborated to deliver routine family follow-up after bereavement in the intensive care unit (ICU). This follow-up includes a telephone interview that invites bereaved family members to comment on the quality of care and communication experienced in the ICU. To identify bereaved families' experiences, including how they conceptualise good care and communication in intensive care, an analysis was conducted on all qualitative data collected during 118 interviews completed between 1 February 2018 and 30 May 2019.

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Background: Oesophagectomy for surgical management of oesophageal carcinoma has previously been performed via an open approach (OE), with a change in recent years to a minimally invasive technique (MIO). We performed a retrospective study to compare the rates of post-operative complications between OE and MIO patients at our institution. Secondary outcomes included nodal yield and ICU LOS.

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Background: There is a lack of evidence regarding direct oral anticoagulant (DOAC) assay plasma concentrations and their association with bleeding events or transfusion requirements. This multicenter study aimed to characterize the use and plasma levels of DOAC assays of anticoagulated patients who present to emergency with a bleeding event and their association with bleeding severity.

Methods: A multicenter retrospective cohort study of consecutive emergency bleeding presentations with a DOAC assay over a five-year period was conducted.

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Article Synopsis
  • The study evaluates the effectiveness of ROTEM sigma, a point-of-care coagulation test, in assessing coagulation in patients with isolated traumatic brain injuries (TBI) compared to traditional lab tests.
  • Out of 36 patients tested, 22% exhibited a hypocoagulable state, which correlated with a higher death rate from head injuries, indicating the prognostic value of ROTEM sigma.
  • ROTEM tests provided faster results than standard tests, demonstrating that ROTEM parameters can quickly and accurately predict the risk of head injury-related death.
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Background: This scoping review aimed to characterise near-death experiences in the setting of cardiac arrest, a phenomenon that is poorly understood and may have clinical consequences.

Method: PubMed/MEDLINE was searched to 23 July 2023 for prospective studies describing near-death experiences in cardiac arrest. PRISMA-ScR guidelines were adhered to.

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Background: Gastrointestinal (GI) complications after cardiac surgery are associated with high morbidity and mortality. Early identification and treatment of GI complications could improve patient outcomes.

Objectives: The objective of this study was to ascertain the incidence, risk factors, and clinical outcomes of GI complications following cardiac surgery.

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To report longitudinal differences in baseline characteristics, treatment, and outcomes in patients with coronavirus disease 2019 (COVID-19) admitted to intensive care units (ICUs) between the first and second waves of COVID-19 in Australia. SPRINT-SARI Australia is a multicentre, inception cohort study enrolling adult patients with COVID-19 admitted to participating ICUs. The first wave of COVID-19 was from 27 February to 30 June 2020, and the second wave was from 1 July to 22 October 2020.

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Introduction: Readmission is a poor outcome for both patients and healthcare systems. The association of certain sociocultural and demographic characteristics with likelihood of readmission is uncertain in general surgical patients.

Method: A multi-centre retrospective cohort study of consecutive unique individuals who survived to discharge during general surgical admissions was conducted.

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Introduction: In the absence of a patient's last direct oral anticoagulant (DOAC) dose time, best practice regarding preoperative DOAC cessation remains unclear. The aim of this study was to investigate, in a real-life patient cohort, if there was an association between subjective patient recall and objective DOAC assay titre.

Methods/materials: A multicentre cohort study of consecutive surgical inpatients was conducted.

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  • Existing research on RBC transfusion in VA ECMO patients is limited, mostly consisting of small-scale studies that hinder broader understanding.
  • This study involved an international survey and retrospective data collection from 16 centers to assess transfusion practices and outcomes in VA ECMO patients.
  • Results showed that a high percentage of patients (89%) received RBC transfusions, with factors like lower hemoglobin and longer ECMO duration influencing the need for transfusions, but overall survival did not significantly differ based on transfusion status.
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  • The study examines the use of various blood products (plasma, fibrinogen concentrate, TXA, and PCC) in patients on extracorporeal membrane oxygenation (ECMO) to achieve better blood clotting balance.
  • It analyzes data from a multicenter retrospective study involving adult patients on VA-ECMO and VV-ECMO, identifying complications related to bleeding and thrombosis.
  • Results indicate a higher use of transfusions in patients with bleeding complications, revealing trends in treatment that suggest a need for reevaluation of current transfusion practices in ECMO patients.
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  • Thrombocytopenia (low platelets) and bleeding are common problems for patients on a special machine called VA ECMO that helps with heart and lung issues.
  • A study looked at 419 patients and found that almost all of them developed low platelets, with many having severe cases, and more than half needed platelet transfusions.
  • The research showed that having severe low platelets makes it much more likely to need a platelet transfusion, especially if the patient is also bleeding.
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Background: This study aimed to examine the performance of machine learning algorithms for the prediction of discharge within 12 and 24 h to produce a measure of readiness for discharge after general surgery.

Methods: Consecutive general surgery patients at two tertiary hospitals, over a 2-year period, were included. Observation and laboratory parameter data were stratified into training, testing and validation datasets.

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Evolution of new variants of SARS-CoV-2 warrant the need for the continued efforts in identifying target-oriented new drugs. Dual targeting agents against M and PL not only overcome the incomplete efficacy but also the drug resistance, which is common problem. Since both these are cysteine proteases, we designed 2-chloroquinoline based molecules with additional imine moiety in the middle as possible nucleophilic warheads.

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Background: There is little evidence to guide the perioperative management of patients on a direct oral anticoagulant (DOAC) in the absence of a last known dose. Quantitative serum titers may be ordered, but there is little evidence supporting this.

Aims: This multi-center retrospective cohort study of consecutive surgical in-patients with a DOAC assay, performed over a five-year period, aimed to characterize preoperative DOAC assay orders and their impact on perioperative outcomes.

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Inhalation injury is a major contributor to mortality following burn injury. Despite recognised clinical criteria to guide the intubation of burn patients, concerns remain regarding overutilisation of intubation. Complications can arise as a result of intubation, including ventilator-associated pneumonia (VAP).

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In almost all living cells, methionine aminopeptidase (MetAP) co-translationally cleaves the initiator methionine in at least 70% of the newly synthesized polypeptides. MetAPs are typically classified into Type 1 and Type 2. While prokaryotes and archaea contain only either Type 1 or Type 2 MetAPs respectively, eukaryotes contain both types of enzymes.

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Introduction: Acute ischemic stroke (AIS) can be a catastrophic complication of cardiac surgery previously without effective treatment. Endovascular thrombectomy (EVT) is a potentially life-saving intervention. We examined patients at our institution who had EVT to treat AIS post cardiac surgery.

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Article Synopsis
  • ECMO (extracorporeal membrane oxygenation) is a life-supporting procedure for critically ill patients with severe cardiac or respiratory failure, but its long-term effects on survival and disability are still unclear.
  • A study conducted in Australia involved 391 patients who underwent ECMO, assessing their outcomes related to death or moderate-to-severe disability 6 months post-treatment.
  • Results showed that 66% of patients experienced death or disability, with higher rates in those who received extracorporeal cardiopulmonary resuscitation (eCPR) compared to veno-venous ECMO (VV-ECMO), indicating the need for careful consideration of treatment methods.
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Ribosome assisted protein synthesis in all prokaryotes begins with a formylated methionine. Deformylation and demethionylation of these newly synthesized proteins are critical co-translational events carried out by peptide deformylase (PDF) and methionine aminopeptidase (MetAP) in all living cells. Since the mechanism of N-terminal modification is common between the infectious microbes and the host human cells, it is a challenge to identify selective inhibitors.

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Methionine aminopeptidases (MetAPs) are attractive drug targets due to their essential role in eukaryotes as well as prokaryotic cells. In this study, biochemical assays were performed on newly synthesized Isatin-pyrazole hydrazones () to identify potent and selective bacterial MetAP inhibitors. Compound inhibited prokaryotic MetAP, i.

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Objective: To compare the demographic and clinical features, management, and outcomes for patients admitted with COVID-19 to intensive care units (ICUs) during the first, second, and third waves of the pandemic in Australia.

Design, Setting, And Participants: People aged 16 years or more admitted with polymerase chain reaction-confirmed COVID-19 to the 78 Australian ICUs participating in the Short Period Incidence Study of Severe Acute Respiratory Infection (SPRINT-SARI) Australia project during the first (27 February - 30 June 2020), second (1 July 2020 - 25 June 2021), and third COVID-19 waves (26 June - 1 November 2021).

Main Outcome Measures: Primary outcome: in-hospital mortality.

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Article Synopsis
  • * A study found that while many convalescents maintain certain antibodies and memory B cells after 12 months, their ability to neutralize newer variants, particularly Omicron, is severely weakened.
  • * Although more than half of the subjects retain memory T cells from their initial infection, these cells show reduced effectiveness against mutations found in newer variants, highlighting the need for vaccination to enhance protection against re-infection.
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Monitoring and optimisation of brain tissue oxygen tension (PbtO) has been associated with improved neurological outcome and survival in observational studies of severe traumatic brain injury (TBI). We carried out a systematic review of randomized controlled trials to determine if PbtO-guided management is associated with differential neurological outcomes, survival, and adverse events. Searches were carried out to 10 February 2022 in Medline (OvidSP), 11 February in EMBASE (OvidSP) and 8 February in Cochrane library.

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