Publications by authors named "Joynt G"

Article Synopsis
  • Ventriculitis in critically ill neurocritical care patients increases the risk of complications and death, prompting a need for improved antibiotic dosing strategies.
  • The study aimed to create a population pharmacokinetic (PK) model for piperacillin-tazobactam (PTZ) by analyzing samples from neurosurgical patients to determine effective dosing for cerebrospinal fluid (CSF) treatment.
  • Results showed significant inter-individual variability in drug penetration into CSF, making it difficult to recommend optimal dosing regimens despite some patients achieving high plasma drug levels.
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Background: Physical prehabilitation can enhance patient resilience to surgical stress, but its effects are unclear in vulnerable and frail patients. We aimed to determine the effect of a structured exercise prehabilitation programme on the quality of recovery after cardiac surgery in vulnerable and frail participants.

Methods: This single-blinded, parallel-arm, superiority, randomised controlled trial recruited patients with a Clinical Frailty Scale of 4-6 undergoing cardiac surgery.

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Introduction: The need for end-of-life care is common in intensive care units (ICUs). Although guidelines exist, little is known about actual end-of-life care practices in Hong Kong ICUs. The study aim was to provide a detailed description of these practices.

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Background: Sepsis is a life-threatening condition which may arise from infection in any organ system and requires early recognition and management. Healthcare professionals working in any specialty may need to manage patients with sepsis. Educating medical students about this condition may be an effective way to ensure all future doctors have sufficient ability to diagnose and treat septic patients.

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Background: Frailty is common in patients undergoing cardiac surgery and is associated with poorer postoperative outcomes. Ultrasound examination of skeletal muscle morphology may serve as an objective assessment tool as lean muscle mass reduction is a key feature of frailty.

Methods: This study investigated the association of ultrasound-derived muscle thickness, cross-sectional area, and echogenicity of the rectus femoris muscle (RFM) with preoperative frailty and predicted subsequent poor recovery after surgery.

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Purpose: Limitations of life sustaining therapies (LLST) are frequent in intensive care units (ICUs), but no previous studies have examined end-of-life (EOL) care and LLST in South Africa (SA).

Materials And Methods: This study evaluated LLST in SA from the data of a prospective, international, multicentre, observational study (Ethicus-2) and compared practices with countries in the rest of the world.

Results: LLST was relatively common in SA, and withholding was more frequent than withdrawing therapy.

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Background: Despite a high burden of disease that requires critical care services, there are a limited number of intensivists in South Africa (SA). Medical practitioners at district and regional public sector hospitals frequently manage critically ill patients in the absence of intensivists, despite these medical practitioners having had minimal exposure to critical care during their undergraduate training.

Objectives: To identify core competencies in critical care for medical practitioners who provide critical care services at public sector hospitals in SA where intensivists are not available to direct patient management.

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Article Synopsis
  • The healthcare system needs to rethink how it treats very old patients (over 80 years) who are seriously ill, especially due to changes in population and finances.
  • It's important to include doctors, patients, and their families in decisions about care so that resources are used wisely without doing too much or too little.
  • This review offers ideas from experts to help make better decisions before, during, and after ICU care, focusing on improving the patient's quality of life instead of just preventing death.
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Purpose: The present study aimed at assessing the prevalences of post-traumatic stress disorder (PTSD) (main objective), anxiety, depression, and burnout syndrome (BOS) and their associated factors in intensive care unit (ICU) staff workers in the second year of the COVID-19 pandemic.

Materials And Methods: An international cross-sectional multicenter ICU-based online survey was carried out among the ICU staff workers in 20 ICUs across 3 continents. ICUs staff workers (both caregivers and non-caregivers) were invited to complete PCL-5, HADS, and MBI questionnaires for assessing PTSD, anxiety, depression, and the different components of BOS, respectively.

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Article Synopsis
  • The aging population, particularly in developed countries, faces increasing health challenges despite medical advancements, leading to a rise in elderly individuals with chronic conditions that affect quality of life and burden healthcare systems.
  • The concept of 'Accelerated Biological Aging' suggests that some individuals may have a biological age older than their chronological age, linked to common medical issues like diabetes and cognitive decline.
  • Recent research highlights taurine, an amino acid, as potentially beneficial for improving cellular and metabolic health, and a randomized-controlled trial is proposed to validate its effects on metabolic health and biological aging.
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Background: Decisions about life-sustaining therapy (LST) in the intensive care unit (ICU) depend on predictions of survival as well as the expected functional capacity and self-perceived quality of life after discharge, especially in very old patients. However, prognostication for individual patients in this cohort is hampered by substantial uncertainty which can lead to a large variability of opinions and, eventually, decisions about LST. Moreover, decision-making processes are often embedded in a framework of ethical and legal recommendations which may vary between countries resulting in divergent management strategies.

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Article Synopsis
  • The study looked at how well different nutritional screening tests work for finding malnutrition in adults before surgery.
  • Researchers checked a lot of past studies and discovered that the Malnutrition Universal Screening Tool (MUST) was the best at finding who might be malnourished.
  • They found that MUST was both accurate and reliable, helping doctors make better decisions for patients to reduce risks during and after surgery.
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Introduction: Protein malnutrition is associated with higher risks of postoperative complications, mortality, prolonged postoperative stays in hospital, slower physical and mental recovery after surgery and lower subsequent health-related quality of life. To reduce the risk of postoperative morbidity and mortality, nutritional prehabilitation programmes have been developed recently to build up patient's nutritional reserve to withstand the stress of surgery. The intervention involves nutritional screening and counselling, and increasing dietary protein intake in protein-malnourished patients in the several weeks before surgery.

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  • A study compared hospital outcomes between critically ill patients with COVID-19 and those with influenza A, focusing on mortality rates and risk factors.
  • The research involved a retrospective analysis of adult patients in Hong Kong, matching 373 COVID-19 patients with 373 influenza A patients based on similar characteristics.
  • Findings showed that COVID-19 patients had a significantly higher hospital mortality rate (17.5%) compared to influenza A patients (7.5%), with factors such as age and coinfections impacting these outcomes.
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Introduction: The importance of antibiotic treatment for sepsis in critically ill septic patients is well established. Consistently achieving the dose of antibiotics required to optimally kill bacteria, minimize the development of resistance, and avoid toxicity is challenging. The increasing understanding of the pharmacokinetic and pharmacodynamic (PK/PD) characteristics of antibiotics, and the effects of critical illness on key PK/PD parameters, is gradually re-shaping how antibiotics are dosed in critically ill patients.

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Article Synopsis
  • Some critically ill patients have sepsis without a clear cause, making it hard to treat them.
  • A study looked at existing research to see how doctors diagnose this type of sepsis that doesn't have a known source.
  • They found that while many studies discussed different ways to diagnose it, there wasn't a single set of rules that everyone agrees on for how to do this.
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Article Synopsis
  • - This study examined the outcomes of 940 critically ill patients with tuberculosis (TB) admitted to ICUs in Hong Kong over an 11-year period, finding high mortality rates of 24.7% in ICUs and 41.1% in hospitals, with a significant portion of ICU deaths occurring in patients who did not receive TB treatment.
  • - Researchers used methods like generalized linear modeling and analyzed mortality trends, concluding that delays in TB treatment are linked to increased hospital mortality, and they noted that diagnostic methods like MTB PCR were underutilized.
  • - The results suggest that despite TB being preventable and treatable, survival rates for ICU patients have not improved, emphasizing the need for quicker diagnoses and treatment to enhance patient
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Morbidity and mortality related to ventriculitis in neurocritical care patients remain high. Antibiotic dose optimization may improve therapeutic outcomes. In this study, a population pharmacokinetic model of meropenem in infected critically ill patients was developed.

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Background: Prolonging life in the ICU increasingly is possible, so decisions to limit life-sustaining therapies frequently are made and communicated to patients and families or surrogates. Little is known about worldwide communication practices and influencing factors.

Research Question: Are there regional differences in end-of-life communication practices in ICUs worldwide?

Study Design And Methods: This analysis of data from a prospective, international study specifically addressed end-of-life communications in consecutive patients who died or had limitation of life-sustaining therapy over 6 months in 199 ICUs in 36 countries, grouped regionally.

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The objective of this study was to describe the total and unbound population pharmacokinetics of ceftriaxone in critically ill adult patients and to define optimized dosing regimens. Total and unbound ceftriaxone concentrations were obtained from two pharmacokinetic studies and from a therapeutic drug monitoring (TDM) program at a tertiary hospital intensive care unit. Population pharmacokinetic analysis and Monte Carlo simulations were used to assess the probability of achieving a free trough concentration/MIC ratio of ≥1 using Pmetrics for R.

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Multidrug resistant organisms (MDRO) are commonly isolated in respiratory specimens taken from mechanically ventilated patients. The purpose of this narrative review is to discuss the approach to antimicrobial prescription in ventilated patients who have grown a new MDRO isolate in their respiratory specimen. A MEDLINE and PubMed literature search using keywords "multidrug resistant organisms", "ventilator-associated pneumonia" and "decision making", "treatment" or "strategy" was used to identify 329 references as background for this review.

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Background: Limitations of life-sustaining interventions in intensive care units (ICUs) exhibit substantial changes over time, and large, contemporary variation across world regions. We sought to determine whether a weighted end-of-life practice score can explain a large, contemporary, worldwide variation in limitation decisions.

Methods: The 2015-2016 (Ethicus-2) vs.

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A recent mutation analysis suggested that Non-Structural Protein 6 (NSP6) of the Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) is a key determinant of the viral pathogenicity. Here, by transcriptome analysis, we demonstrated that the inflammasome-related NOD-like receptor signaling was activated in SARS-CoV-2-infected lung epithelial cells and Coronavirus Disease 2019 (COVID-19) patients' lung tissues. The induction of inflammasomes/pyroptosis in patients with severe COVID-19 was confirmed by serological markers.

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The effect of changes to cardiopulmonary resuscitation (CPR) procedures in response to Coronavirus disease 2019 (COVID-19) on in-hospital cardiac arrest (IHCA) management and outcomes are unreported. In this multicenter retrospective study, we showed that median time to arrival of resuscitation team has increased and proportion of patients receiving first-responder CPR has lowered during this pandemic. IHCA during the pandemic was independently associated with lower return of spontaneous circulation OR 0.

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