Publications by authors named "Ranistha Ratanarat"

Background: Corticosteroids are commonly used to treat COVID-19 patients with hypoxemia, and clinicians have adjusted the corticosteroid intensity on the basis of clinical needs. However, neither the optimal dose nor the duration of treatment has been recommended.

Objective: To investigate whether cumulative doses of corticosteroids, measured as dexamethasone-equivalent doses over the first 14 days, impact outcomes in patients with COVID-19 pneumonia.

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Background: Pregnant women are more likely to have a higher severity of illness after being infected with coronavirus disease 2019 compared with the general population, particularly in the hyperinflammatory phase. However, immunomodulatory drugs are contraindicated and have been associated with an increased risk of fetal abnormalities. Therefore, we are reporting our experience with the use of HA330 hemoperfusion in combination with standard therapy in severe to critical coronavirus disease 2019 cases among pregnant patients.

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The evidence supporting additional hemoperfusion (HP) with cytokine adsorbents for improving clinical outcomes in severe to critical coronavirus disease 2019 (COVID-19) patients remains limited. We compared severe to critical COVID-19 patients who received additional HP with a cytokine adsorbent to matched cases receiving standard medical treatment (SMT). The primary outcome was hospital mortality.

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The prone position reduces mortality in severe cases of COVID-19 with acute respiratory distress syndrome. However, visual loss and changes to the peripapillary retinal nerve fiber layer (p-RNFL) and the macular ganglion cell layer and inner plexiform layer (m-GCIPL) have occurred in patients undergoing surgery in the prone position. Moreover, COVID-19-related eye problems have been reported.

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Introduction: The use of anticoagulants during continuous renal replacement therapy (CRRT) is essential. Regional citrate anticoagulation (RCA) is recommended rather than systemic heparinization to prolong the filter's lifespan in patients at high risk of bleeding. However, commercial citrate is expensive and may not be available in resource-limited areas.

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Introduction: Data on the characteristics and outcomes of patients hospitalized for Coronavirus Disease 2019 (COVID-19) in Thailand are limited.

Objective: To determine characteristics and outcomes and identify risk factors for hospital mortality for hospitalized patients with COVID-19.

Methods: We retrospectively reviewed the medical records of patients who had COVID-19 infection and were admitted to the cohort ward or ICUs at Siriraj Hospital between January 2020 and December 2021.

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Background: Extracorporeal membrane oxygenation (ECMO) is an important rescue therapy for patients with refractory respiratory or circulatory failure. High cost and associated complications warrant careful case selection. The aim of this study was to investigate the outcomes and factors associated with mortality in acute hypoxemic respiratory failure patients who received ECMO support, and to externally validate preexisting ECMO survival prediction scoring systems.

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Exuberant inflammation manifesting as a "cytokine storm" has been suggested as a central feature in the pathogenesis of severe coronavirus disease 2019 (COVID-19). This study investigated two prognostic biomarkers, the high mobility group box 1 (HMGB1) and interleukin-6 (IL-6), in patients with severe COVID-19 at the time of admission in the intensive care unit (ICU). Of 60 ICU patients with COVID-19 enrolled and analyzed in this prospective cohort study, 48 patients (80%) were alive at ICU discharge.

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Background: The epidemiology and outcomes of COVID-19 patients in Thailand are scarce.

Methods: This retrospective cohort study included adult hospitalized patients who were diagnosed with COVID-19 at Siriraj Hospital during February 2020 to April 2020.

Results: The prevalence of COVID-19 was 7.

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Objective: To compare the treatment outcome of venovenous extracorporeal membrane oxygenation (VV-ECMO) versus mechanical ventilation in hypoxemic patients with acute respiratory distress syndrome (ARDS) at a referral center that started offering VV-EMCO support in 2010.

Methods: This retrospective cohort study enrolled adults with severe ARDS (PaO/FiO ratio of <100 with FiO of ≥90 or Murray score of ≥3) who were admitted to the intensive care unit of Siriraj Hospital (Bangkok, Thailand) from January 2010 to December 2018. All patients were treated using a low tidal volume (TV) and optimal positive end-expiratory pressure.

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Since late December 2019, the world has been challenged with an outbreak of COVID-19. In Thailand, an upper middle-income country with a limited healthcare infrastructure and restricted human resources, nearly 3,000 confirmed COVID-19 cases have been reported as of early May 2020. Public health policies aimed at preventing new COVID-19 cases were very effective in halting the pandemic in Thailand.

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Aim: A knee arthrocentesis (KA) workshop using synthetic knee model was arranged for all sixth-year medical students (MS) in our institute to ensure equity in receiving training. We evaluated confidence level and knowledge of KA and synovial fluid analysis testing pre- and post-workshop for MS.

Methods: The workshop was divided into two parts.

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Background: Direct observation and supervision (DOS) is the teaching method where a mentor provides direct observation during patient encounter and provides feedback to the learner in real-time manner Previous studies showed that DOS improves patient care and trainees' clinical skill but is difficult to implement.

Objective: To evaluate students' performance and attitude after implementing DOS to the 5th year medical students.

Material And Method: DOS was introduced for the whole class of the 5th year medical students throughout the year at out-patient setting department of Medicine, Siriraj Hospital in 2012.

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Background: Septic shock is a serious condition leading to high mortality and morbidity. Many varieties of attempts aiming toward improving outcomes have been implemented. However the appropriate therapeutic endpoint of shock resuscitation is still under investigation.

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Background: The Acute Dialysis Quality Initiative (ADQI) group developed RIFLE criteria and the Acute Kidney Injury Network published AKIN classification that modified form RIFLE criteria.

Objective: The authors aimed to compare the ability of RIFLE and AKIN criteria to measure the incidence of acute kidney injury (AKI) and to predict clinical outcomes in critically illpatients.

Material And Method: A retrospective cohort study, in Siriraj Hospital, Bangkok.

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Background: There have been controversial data regarding the application of acid-base analysis based on Stewart methodology to predict clinical outcome in different populations.

Objective: To compare predictive ability of the physicochemical approach and the traditional bicarbonate approach of acid-base analysis in critically ill patients in relation to 28-days mortality and to evaluate the use of the physico chemical approach determined by the strong ion gap (SIG) in 1) medical compared to surgical critically ill patients; and 2) sepsis compared to non-sepsis patients.

Material And Method: This retrospective cohort study included 410 critically ill patients in the adult medical and surgical intensive care units (ICU) at a tertiary care hospital over a 2-year period.

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Background: Acute kidney injury (AKI) is frequently part of a multiple-organ dysfunction syndrome presenting in critically ill patients. Prolonged intermittent renal replacement therapy (PIRRT) provides the advantages of both continuous renal replacement therapy (CRRT) in term of hemodynamic stability and the cost-effectiveness of intermittent hemodialysis (IHD). This study aims to study PIRRT in the aspects of efficacy and hemodynamic outcomes.

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Background: Right ventricular dysfunction (RVD) is common in critically ill patients and the presence of this condition affects patients' outcomes. Improving the knowledge background and establishing the incidence of RVD in septic shock patients would render the management more efficacious. This study was performed to evaluate the incidence and outcomes of RVD in septic shock patients.

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Background: Blood lactate level increases in response to tissue hypoxia and this level is currently used to monitor shock management. To obtain the arterial lactate value in clinical practice is a time consuming process. Our previous study demonstrated good correlation between the capillary lactate determined by a portable lactate analyzer and the standard arterial lactate in critically ill patients.

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Objective: This study aims to compare filter life between saline flushed and non-saline flushed strategies in critically ill patients at high risk of bleeding who are undergoing CRRT without anticoagulation.

Material And Method: A cohort of 121 critically ill patients with severe acute kidney injury (AKI) requiring CRRT in the medical intensive care unit (ICU) and cardiac care unit (CCU) of a tertiary care academic center were included. 78 of them used saline flushed through CRRT circuit.

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Background: The reported incidence of critical illness-related corticosteroid insufficiency (CIRCI) varies widely, depending on the patient population studied and the diagnostic criteria used. Surviving Sepsis Campaign guidelines suggest that corticosteroid therapy should be considered for adult septic shock when hypotension responds poorly to adequate fluid resuscitation and vasopressors, regardless of any results of diagnostic tests. However, steroid treatment may be associated with an increase risk of infection.

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Background: Septic shock is one of the most serious conditions associated with high mortality. We recently developed a modified septic shock management guideline focusing on rapid restoration of hemodynamics by using clinical endpoint. Our aim was to analyze patients' outcomes following the guideline implementation.

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Objective: The Acute Dialysis Quality Initiative (ADQI) Group published a consensus definition (the RIFLE criteria) for acute renal failure. We sought to assess the ability of the RIFLE criteria to predict mortality in critically ill Thai patients with acute kidney injury (AKI).

Material And Method: We performed a retrospective cohort study, in Siriraj Hospital (a large single tertiary care academic center in Thailand) on 121 patients admitted during November 2005-November 2006.

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Background: The effect of body position on oxygenation in acute respiratory distress syndrome (ARDS) patients has long been known. Prone position improves the PaO2 in 60-70% of ARDS patients. However the effect of the lateral positions, which are used in routine critical care, has never been reported.

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Severe sepsis represents the leading cause of mortality and morbidity in critically ill patients. Although the authors' understanding of the complex pathophysiological alterations that occur in severe sepsis and septic shock has increased greatly, mortality associated with the disorder remains unacceptably high. Recent treatment guidelines have reinforced the importance of early goal directed therapy.

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