Publications by authors named "Rex Pui Kin Lam"

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  • The study investigated how methyl salicylate levels in the blood change after ingestion, aiming to identify peak serum concentrations and factors influencing these levels.
  • Researchers analyzed cases from the Hong Kong Poison Control Centre involving 41 patients, finding that the median time to peak concentration was 5.6 hours, with gastric aspiration and activated charcoal use being linked to lower peak levels.
  • Results suggest that the peak concentration of serum salicylate occurs slower than previously thought, indicating the need for ongoing monitoring in patients after ingestion.
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  • Cocaine when used with ethanol leads to the creation of cocaethylene, which has a longer effect; this study investigates the combined toxicity of these substances in Hong Kong.
  • A retrospective study analyzed 109 patients who had acute cocaine toxicities, confirming ethanol co-ingestion through blood tests in some cases.
  • Contrary to earlier studies, results indicated that using cocaine and ethanol together is linked to a lower risk of serious adverse outcomes compared to using cocaine alone.
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Background: This study aimed to evaluate the discriminatory performance of 11 vital sign-based early warning scores (EWSs) and three shock indices in early sepsis prediction in the emergency department (ED).

Methods: We performed a retrospective study on consecutive adult patients with an infection over 3 months in a public ED in Hong Kong. The primary outcome was sepsis (Sepsis-3 definition) within 48 h of ED presentation.

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Introduction: Early sepsis treatment in the emergency department (ED) is crucial to improve patient survival. Despite international promulgation, the uptake of the Surviving Sepsis Campaign (SSC) Hour-1 Bundle (lactate measurement, blood culture, broad-spectrum antibiotics, 30 mL/kg crystalloid for hypotension/lactate ≥4 mmol/L and vasopressors for hypotension during/after fluid resuscitation within 1 hour of sepsis recognition) is low across healthcare settings. Delays in sepsis recognition and a lack of high-quality evidence hinder its implementation.

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A complete blood count (CBC) is routinely ordered for emergency department (ED) patients with infections. Certain parameters, such as the neutrophil-to-lymphocyte ratio (NLR), might have prognostic value. We aimed to evaluate the prognostic value of the presenting CBC parameters combined with clinical variables in predicting 30-day mortality in adult ED patients with infections using an artificial neural network (ANN).

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Background: There is a lack of real-life population-based study examining the effect of community mental health services on psychiatric emergency admission. In Hong Kong, Integrated Community Center for Mental Wellness (ICCMW) and telecare service were introduced in 2009 and 2012, respectively. We examined the real-life impact of these services on psychiatric emergency admissions over 20 years.

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Objective: Metamfetamine use can cause serious complications or death. We aimed to derive and internally validate a clinical prediction score to predict major effect or death in acute metamfetamine toxicity.

Methods: We performed secondary analysis of 1,225 consecutive cases reported from all local public emergency departments to the Hong Kong Poison Information Centre between 1 January 2010 and 31 December 2019.

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Background: Early identification of patients at risk of seizure after acute tramadol overdose is crucial. Yet, current evidence has been inconclusive regarding the factors associated with the seizure. There is a lack of study on the Chinese population and the value of electrocardiogram (ECG) in risk prognostication has not been fully evaluated.

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Diagnosing influenza in children aged 5 years and under can be challenging because of their difficulty in verbalizing symptoms. This study aimed to explore the value of the triage heart rate (HR), respiratory rate (RR), and temperature, either alone or when combined with individual symptoms and signs, in predicting influenza infection in this age group.This was a retrospective study covering 4 influenza seasons from 2017 to 2019 in an emergency department (ED) in Hong Kong.

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  • The study aimed to compare the efficiency and usability of the aerosol box and intubation tent during intubation procedures, using simulated manikin tests.
  • Results showed that the intubation time was significantly longer when using the aerosol box compared to no device and the intubation tent; however, the first-pass success rates were similar across all methods.
  • Participants preferred the intubation tent for its design and usability, suggesting it may be a more effective option for protecting healthcare workers, but further research is needed before recommending widespread use.
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  • * The study found that many beneficial fungal-bacterial interactions were lost post-antibiotic treatment, indicating a shift from mutualism to competition among these microorganisms.
  • * Certain bacterial strains can help inhibit the pathogenic fungus Candida albicans, suggesting that gut bacteria play a crucial role in controlling fungal infections through their metabolites.
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Objectives: Little is known about the value of routine clinical assessment in identifying patients with coronavirus disease 2019 (COVID-19) in the emergency department (ED). We aimed to compare the exposure history, signs and symptoms, laboratory, and radiographic features of ED patients who tested positive and negative for COVID-19.

Methods: This was a case-control study in 7 EDs in Hong Kong from 20 January to 29 February 2020.

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Background: Despite its continued use in many low-volume emergency departments (EDs), 3-level triage systems have not been extensively studied, especially on live triage cases. We have modified from the Australasian Triage Scale and developed a 3-level triage scale, and sought to evaluate its validity, reliability, and over- and under-triage rates in real patient encounters in our setting.

Method: This was a cross-sectional study in a single ED with 24,000 attendances per year.

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  • Early administration of epinephrine in patients experiencing in-hospital cardiac arrest (IHCA) with non-shockable rhythms was linked to improved outcomes, particularly in achieving return of spontaneous circulation (ROSC) and survival to discharge.
  • The median time for epinephrine administration was 3 minutes, with earlier administration (within 5 minutes) resulting in a higher ROSC rate compared to later administration.
  • Compliance with advanced cardiovascular life support (ACLS) guidelines for administering epinephrine was high at 83.6%, while compliance for amiodarone was lower at 33.3%.
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Background: Accidents involving high-speed passenger ferries have the potential to cause mass-casualty incidents (MCIs), yet there is a lack of relevant studies available to inform hospital disaster preparedness planning.

Objective: The objective was to study the injury patterns and outcomes of MCI victims involved in high-speed passenger ferry accidents in Hong Kong waters.

Methods: A retrospective study was conducted from 1 January 2005 to 31 December 2015.

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Introduction: A comprehensive review of both English and Chinese language literature to inform acupuncture practice in emergency department (ED) settings is lacking. Accordingly, we aimed to conduct a systematic review of English and Chinese randomised controlled trials (RCTs) of acupuncture use in the ED.

Methods: Four English databases (Embase, PubMed, AMED and CENTRAL) and two Chinese databases (CNKI and Wanfang) were systematically searched using the keywords 'acupuncture' and 'emergency department', followed by a bibliographic search of references.

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  • The study aimed to identify challenges in Hong Kong's disaster response, focusing on barriers to evacuation and citizens' self-efficacy.
  • Using GPS software, researchers surveyed 1,023 participants to assess their preparedness and perceived obstacles, employing statistical analysis to explore self-efficacy profiles.
  • Results showed only 11% felt prepared for disasters, with 41.9% citing major issues affecting evacuation; higher self-efficacy correlated with fewer perceived barriers, suggesting that boosting self-efficacy could enhance evacuation readiness.
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Objective: To assess the state of community disaster preparedness of Hong Kong residents and to identify factors associated with adequate preparedness behaviors.

Design: A cross-sectional survey using random Global Positioning System (GPS) spatial sampling conducted from the 8 August 2015 to 6 September 2015.

Participants: Hong Kong residents aged 18 years or more.

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Background: AB-FUBINACA and ADB-FUBINACA are structurally similar synthetic cannabinoids with potent CB receptor agonistic effects. Very little is known about their pharmacology and toxicology.

Objective: To report a case of supraventricular tachycardia and acute confusion after ingestion of e-cigarette fluid containing AB-FUBINACA and ADB-FUBINACA, with quantitative analysis of the serum drug concentrations.

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Background: Chemical restraint is often required to control agitation induced by methamphetamine. Dexmedetomidine is an α-2 adrenergic receptor agonist with sedative, analgesic, and sympatholytic properties. Its use in the emergency department (ED) to control methamphetamine-induced agitation has not been reported.

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