1.Validating lactate dehydrogenase (LDH) as a component of the PLASMIC predictive tool (PLASMIC-LDH)
Christopher Chin KEONG LIAM ; Jim Yu-Hsiang TIAO ; Yee Yee YAP ; Yi Lin LEE ; Jameela SATHAR ; Simon MCRAE ; Amanda DAVIS ; Jennifer CURNOW ; Robert BIRD ; Philip CHOI ; Pantep ANGCHAISUKSIRI ; Sim Leng TIEN ; Joyce Ching MEI LAM ; Doyeun OH ; Jin Seok KIM ; Sung-Soo YOON ; Raymond Siu-Ming WONG ; Carolyn LAUREN ; Eileen Grace MERRIMAN ; Anoop ENJETI ; Mark SMITH ; Ross Ian BAKER
Blood Research 2023;58(1):36-41
		                        		
		                        			 Background:
		                        			The PLASMIC score is a convenient tool for predicting ADAMTS13 activity of <10%.Lactate dehydrogenase (LDH) is widely used as a marker of haemolysis in thrombotic thrombocytopenic purpura (TTP) monitoring, and could be used as a replacement marker for lysis. We aimed to validate the PLASMIC score in a multi-centre Asia Pacific region, and to explore whether LDH could be used as a replacement marker for lysis. 
		                        		
		                        			Methods:
		                        			Records of patients with thrombotic microangiopathy (TMA) were reviewed. Patients’ ADAMTS13 activity levels were obtained, along with clinical/laboratory findings relevant to the PLASMIC score. Both PLASMIC scores and PLASMIC-LDH scores, in which LDH replaced traditional lysis markers, were calculated. We generated a receiver operator characteristics (ROC) curve and compared the area under the curve values (AUC) to determine the predictive ability of each score. 
		                        		
		                        			Results:
		                        			46 patients fulfilled the inclusion criteria, of which 34 had ADAMTS13 activity levels of <10%. When the patients were divided into intermediate-to-high risk (scores 5‒7) and low risk (scores 0‒4), the PLASMIC score showed a sensitivity of 97.1% and specificity of 58.3%, with a positive predictive value (PPV) of 86.8% and negative predictive value (NPV) of 87.5%. The PLASMIC-LDH score had a sensitivity of 97.1% and specificity of 33.3%, with a PPV of 80.5% and NPV of 80.0%. 
		                        		
		                        			Conclusion
		                        			Our study validated the utility of the PLASMIC score, and demonstrated PLASMIC-LDH as a reasonable alternative in the absence of traditional lysis markers, to help identify high-risk patients for treatment via plasma exchange. 
		                        		
		                        		
		                        		
		                        	
2.Intranasal drug delivery in pediatric emergency departments: brief review and future outlook
Christopher Hugh MCCLEAN ; Mohammad Hussein ALSABRI ; Sania TAHIR ; Rebecca SONG ; Christopher CHIN
Pediatric Emergency Medicine Journal 2023;10(4):109-117
		                        		
		                        			
		                        			 This review aims to provide an overview and update of current literature on the use of intranasal (IN) drug delivery in pediatric emergency medicine (PEM), in terms of the anatomy, physiology, pharmacokinetics, limitations, drug delivery methods, necessary training, safety, contraindications, effectiveness, current indications and trends, and implications for clinical practice and future developments in IN drug administration. We evaluate how IN medication use in PEM has recently evolved, what recent research has revealed about the utility of IN drug delivery in PEM, and what the future of IN drug delivery might look like. 
		                        		
		                        		
		                        		
		                        	
4.Development and content validation of a questionnaire on the perception of PPE usage in response to COVID-19 for Filipino physical therapists: A study protocol.
Christopher Cruz ; Valentin Dones III ; Joshua Kyle Bunye ; Milea Margarette Chin ; Marion Dominique Cu ; Leeuwin Lim ; Mary Avegail Rosales ; Lorenzo Miguel Sison ; Shanen Alyanna Vitug
Philippine Journal of Allied Health Sciences 2022;6(1):48-53
		                        		
		                        			BACKGROUND:
		                        			The COVID-19 pandemic has led to innumerable challenges in the practice of physical therapy (PT) in both local and global settings.
Healthcare settings often use Personal Protective Equipment (PPE) to prevent contamination. Despite its benefits, compliance is challenged by
issues such as discomfort, availability, accessibility, and individual perception. 
		                        		
		                        			OBJECTIVES:
		                        			Considering the contrasting roles and nature of
healthcare practitioners' work and the differences in the demands of PPE usage, this study aims to develop a profession-specific questionnaire on
the perceptions of physical therapists on PPE usage in response to the COVID-19 pandemic with good face and content validity.
		                        		
		                        			METHODS:
		                        			The study
comprises Phase 1 for questionnaire development and Phase 2 for questionnaire validation. Five experts recruited using purposive sampling
participated in three rounds of the validation process. Each expert evaluated the face and content validity through Google Forms. Consequently, an
expert panel evaluation to reach a consensus on the final items. Google sheets were utilized for analysis.
		                        		
		                        			EXPECTED RESULTS
		                        			 The final questionnaire
will have 35 items covering the Health Belief Theory domains. All items will receive FVI (overall agreement scores), I-CVI, S-CVI/Ave, and S-CVI/UA
scores that meet the cut-off. The final questionnaire will be useful in evaluating physical therapists' perceptions of using PPE due to COVID-19 and
may also be helpful to organizations, policymakers, and other entities in their decision-making for PPE protocols, guidelines, and implementation.
Future researchers can use this study to conduct a pilot study that assesses other psychometric properties of the tool.
		                        		
		                        		
		                        		
		                        	
6.Haemophilia care and outcome in a major haemophilia treatment centre in Malaysia
Yang Liang Boo ; Christopher Chin Keong Liam ; Kar Ying Yong ; Rui Jeat Fann ; Grace Wan Chieng Lee ; Gilbert Wilfred ; Jameela Sathar
The Medical Journal of Malaysia 2021;76(1):46-50
		                        		
		                        			
		                        			Introduction/Objective: The management of potential
treatment-related complications and bleeding events in
haemophilia is challenging in developing countries.
Providing optimal care among these patients improve their
quality of life (QOL) and life expectancy. This study explores
the demographic characteristics and treatment outcome in a
major haemophilia treatment centre in Malaysia.
Materials and Methods: A total of 260 patients were recruited
in this retrospective cross-sectional analysis. Clinical data,
including treatment regimens and outcome, were collected
and analysed.
Results: A total of 211 patients were diagnosed with
haemophilia A (HA) (severe disease, 72.5%) and 49 patients
had haemophilia B (HB) (severe disease, 65.3%). The median
age was 31 (IQR;2-84) years. Majority of the patients had at
least one episode of musculoskeletal bleeding since
diagnosis. The mean annual bleeding event (ABE) was 4.91
(SD±6.07) in 2018. Target joints were identified in 80.4% of
the patients. Chronic arthropathy and synovitis collectively
accounted for more than half of the musculoskeletal
complications. 30.1% of the patients had contracted
hepatitis C with less than half received treatment. Thirty-one
patients (16.8%) with severe haemophilia developed
inhibitor and 12 patients successfully underwent immune
tolerance induction. More than three-quarters of the severe
haemophilia patients were treated with factor concentrate
prophylaxis. The mean prophylaxis dose for HA and HB were
41.3 (SD±19.1) and 48.6 (SD±21.5) IU/kg/week, respectively.
In patients with severe disease, prophylaxis significantly
reduced the ABE (5.45,9.03;p=0.005).
Conclusion: The importance of utilising a low to moderate
dose regimen as prophylaxis in haemophilic patients is
highlighted in our study. Future studies should include QOL
assessment will further improve the management in
haemophilia. 
		                        		
		                        		
		                        		
		                        	
7.Persistent thrombocytopenia following dengue fever: What should we do?
Yang Liang Boo ; Suat Yee Lim ; Hon Shen P&rsquo ; ng ; Christopher Chin Keong Liam ; Nai Chien Huan
Malaysian Family Physician 2019;14(3):71-73
		                        		
		                        			
		                        			Thrombocytopenia is a common laboratory finding in dengue infection. However, it usually
resolves as the patient recovers from the infection. Persistent thrombocytopenia following dengue
infection requires further investigation. Here, we present a case of immune thrombocytopenic
purpura (ITP) following dengue infection complicated by intracranial bleeding.
		                        		
		                        		
		                        		
		                        	
8.Men's Health Index: A Pragmatic Approach to Stratifying and Optimizing Men's Health.
Hui Meng TAN ; Wei Phin TAN ; Jun Hoe WONG ; Christopher Chee Kong HO ; Chin Hai TEO ; Chirk Jenn NG
Korean Journal of Urology 2014;55(11):710-717
		                        		
		                        			
		                        			PURPOSE: The proposed Men's Health Index (MHI) aims to provide a practical and systematic framework for comprehensively assessing and stratifying older men with the intention of optimising their health and functional status. MATERIALS AND METHODS: A literature search was conducted using PubMed from 1980 to 2012. We specifically looked for instruments which: assess men's health, frailty and fitness; predict life expectancy, mortality and morbidities. The instruments were assessed by the researchers who then agreed on the tools to be included in the MHI. When there was disagreements, the researchers discussed and reached a consensus guided by the principle that the MHI could be used in the primary care setting targetting men aged 55-65 years. RESULTS: The instruments chosen include the Charlson's Combined Comorbidity-Age Index; the International Index of Erectile Function-5; the International Prostate Symptom Score; the Androgen Deficiency in Aging Male; the Survey of Health, Ageing and Retirement in Europe Frailty Instrument; the Sitting-Rising Test; the Senior Fitness Test; the Fitness Assessment Score; and the Depression Anxiety Stress Scale-21. A pilot test on eight men was carried out and showed that the men's health index is viable. CONCLUSIONS: The concept of assessing, stratifying, and optimizing men's health should be incorporated into routine health care, and this can be implemented by using the MHI. This index is particularly useful to primary care physicians who are in a strategic position to engage men at the peri-retirement age in a conversation about their life goals based on their current and predicted health status.
		                        		
		                        		
		                        		
		                        			Aging/*physiology
		                        			;
		                        		
		                        			*Health Status
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Life Expectancy/*trends
		                        			;
		                        		
		                        			Male
		                        			;
		                        		
		                        			Men's Health/*standards/*trends
		                        			
		                        		
		                        	
9.Academy of Medicine-Ministry of Health clinical practice guidelines: attention deficit hyperactivity disorder.
Daniel S S FUNG ; Choon Guan LIM ; John Chee Meng WONG ; Koon Hock NG ; Christopher Cheng Soon CHEOK ; Jennifer Sie Hee KIING ; Shang Chee CHONG ; June LOU ; Mary Lourdes DANIEL ; Desmond ONG ; Charity LOW ; Sharifah Mariam ALJUNIED ; Pui Meng CHOI ; Kala MEHROTRA ; Carolyn KEE ; Ivy LEUNG ; Lee Chen YEN ; Geraldine WONG ; Poh Yin LEE ; Bella CHIN ; Hwee Chien NG
Singapore medical journal 2014;55(8):411-quiz 415
		                        		
		                        			
		                        			The Academy of Medicine (AMS) and the Ministry of Health (MOH) have developed the clinical practice guidelines on Attention Deficit Hyperactivity Disorder (ADHD) to provide doctors and patients in Singapore with evidence-based treatment for ADHD. This article reproduces the introduction and executive summary (with recommendations from the guidelines) from the MOH clinical practice guidelines on ADHD, for the information of SMJ readers. Chapters and page numbers mentioned in the reproduced extract refer to the full text of the guidelines, which are available from the Ministry of Health website: http://www.moh.gov.sg/content/moh_web/healthprofessionalsportal/doctors/guidelines/cpg_medical.html.The recommendations should be used with reference to the full text of the guidelines. Following this article are multiple choice questions based on the full text of the guidelines.
		                        		
		                        		
		                        		
		                        			Attention Deficit Disorder with Hyperactivity
		                        			;
		                        		
		                        			diagnosis
		                        			;
		                        		
		                        			drug therapy
		                        			;
		                        		
		                        			therapy
		                        			;
		                        		
		                        			Caregivers
		                        			;
		                        		
		                        			Child
		                        			;
		                        		
		                        			Evidence-Based Medicine
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Methylphenidate
		                        			;
		                        		
		                        			therapeutic use
		                        			;
		                        		
		                        			Parents
		                        			;
		                        		
		                        			Psychiatry
		                        			;
		                        		
		                        			methods
		                        			;
		                        		
		                        			standards
		                        			;
		                        		
		                        			Singapore
		                        			;
		                        		
		                        			Societies, Medical
		                        			
		                        		
		                        	
10.Use of the Fix and Flap Approach to Complex Open Elbow Injury: The Role of the Free Anterolateral Thigh Flap.
Christopher Hoe Kong CHUI ; Chin Ho WONG ; Winston Y CHEW ; Mun Hon LOW ; Bien Keem TAN
Archives of Plastic Surgery 2012;39(2):130-136
		                        		
		                        			
		                        			BACKGROUND: Complex elbow injuries with associated nerve, muscle, or joint injury commonly develop post-inury stiffness. In order to preserve function, joint congruency, elbow stability and durable wound coverage must be achieved in a timely manner. METHODS: A retrospective review of patients who underwent orthopaedic fixation followed by free anterolateral thigh (ALT) flap soft tissue coverage was performed. Five patients were identified and included in this study. RESULTS: We present a series of 5 cases managed with this principle. Soft tissue defects ranged in size from 4x9 cm (36 cm2) to 15x30 cm (450 cm2) and were located either posteriorly (n=4) or anteriorly (n=1). Associated injuries included open fractures (n=3) and motor nerve transection (n=2). Wound coverage was achieved in a mean duration of 18.8 days (range, 11 to 42 day). There were no flap failures and no major complications. The mean postoperative active elbow motion was 102degrees (range, 45degrees to 140degrees). CONCLUSIONS: In our small series we have highlighted the safety and utility of using the free ALT flap in complex elbow injuries. The ALT flap has many advantages which include abundant skin and subcutaneous tissue; vascularised vastus lateralis muscle that was used in our series to obliterate dead space, provide a vascular bed for nerve grafts and combat infection; and, access to fascia lata grafts for reconstruction of the triceps tendon.
		                        		
		                        		
		                        		
		                        			Elbow
		                        			;
		                        		
		                        			Elbow Joint
		                        			;
		                        		
		                        			Fascia Lata
		                        			;
		                        		
		                        			Fractures, Open
		                        			;
		                        		
		                        			Free Tissue Flaps
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Joints
		                        			;
		                        		
		                        			Muscles
		                        			;
		                        		
		                        			Quadriceps Muscle
		                        			;
		                        		
		                        			Reconstructive Surgical Procedures
		                        			;
		                        		
		                        			Retrospective Studies
		                        			;
		                        		
		                        			Skin
		                        			;
		                        		
		                        			Tendons
		                        			;
		                        		
		                        			Thigh
		                        			;
		                        		
		                        			Transplants
		                        			
		                        		
		                        	
            

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