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.The Wound Healing Potential of Lignosus rhinocerus and Other Ethno-myco Wound Healing Agents
Hui-Yeng Y. YAP ; Mohammad Farhan ARIFFEEN ROSLI ; Soon-Hao TAN ; Boon-Hong KONG ; Shin-Yee FUNG
Mycobiology 2023;51(1):1-15
Wound care has become increasingly important over the years. Various synthetic products for wound care treatment have been reported to cause toxic side effects and therefore natural products are in significant demand as they have minimal side effects. The presence of bioactive compounds in medicinal mushrooms contributes to various biological activities which assist in the early inflammatory phase, keratinocyte proliferation, and its migration enhancement which are pertinent to wound rehabilitation. Lignosus rhinocerus (tiger milk mushroom) can reduce the inflammation phase in wound healing by fighting off bacterial infection and modulating pro-inflammatory cytokines expression in the early stage to avoid prolonged inflammation and tissue damage. The antibacterial, immunomodulating, and antiinflammatory activities exhibited by most macrofungi play a key role in enhancing wound healing. Several antibacterial and antifungal compounds sourced from traditional botanicals/-products may prevent further complications and reoccurrence of injury to a wounded site.Scientific studies are actively underway to ascertain the potential use of macrofungi as a wound healing agent.
3.Coronary Intravascular Lithotripsy Versus Rotational Atherectomy in an Asian Population: Clinical Outcomes in Real-World Patients
Jie Jun WONG ; Sridharan UMAPATHY ; Yann Shan KEH ; Yee How LAU ; Jonathan YAP ; Muhammad IDU ; Chee Yang CHIN ; Jiang Ming FAM ; Boon Wah LIEW ; Chee Tang CHIN ; Philip En Hou WONG ; Tian Hai KOH ; Khung Keong YEO
Korean Circulation Journal 2022;52(4):288-300
Background and Objectives:
We compared real-world clinical outcomes of patients receiving intravascular lithotripsy (IVL) versus rotational atherectomy (RA) for heavily calcified coronary lesions.
Methods:
Fifty-three patients who received IVL from January 2017 to July 2020 were retrospectively compared to 271 patients who received RA from January 2017 to December 2018.Primary endpoints were in-hospital and 30-day major adverse cardiovascular events (MACE).
Results:
IVL patients had a higher prevalence of acute coronary syndrome (56.6% vs 24.4, p<0.001), multivessel disease (96.2% vs 73.3%, p<0.001) and emergency procedures (17.0% vs 2.2%, p<0.001) compared to RA. In-hospital MACE (11.3% vs 5.9%, p=0.152), MI (7.5% vs 3.3%, p=0.152), and mortality (5.7% vs 3.0%, p=0.319) were not statistically significant. 30-day MACE was higher in the IVL cohort vs RA (17.0% vs 7.4%, p=0.035). Propensity score adjusted regression using IVL was also performed on in-hospital MACE (odds ratio [OR], 1.677; 95% confidence interval [CI], 0.588–4.779) and 30-day MACE (OR, 1.910; 95% CI, 0.774–4.718).
Conclusions
These findings represent our initial IVL experience in a high-risk, real-world cohort. Although the event rate in the IVL arm was numerically higher compared to RA, the small numbers and retrospective nature of this study preclude definitive conclusions. Theseclinical outcomes are likely to improve with greater experience and better case selection, allowing IVL to effectively treat complex calcified coronary lesions.
4.Pericarditis and myocarditis after COVID-19 mRNA vaccination in a nationwide setting.
Jonathan YAP ; Mun Yee THAM ; Jalene POH ; Dorothy TOH ; Cheng Leng CHAN ; Toon Wei LIM ; Shir Lynn LIM ; Yew Woon CHIA ; Yean Teng LIM ; Jonathan CHOO ; Zee Pin DING ; Ling Li FOO ; Simin KUO ; Yee How LAU ; Annie LEE ; Khung Keong YEO
Annals of the Academy of Medicine, Singapore 2022;51(2):96-100
INTRODUCTION:
Despite reports suggesting an association between COVID-19 mRNA vaccination and pericarditis and myocarditis, detailed nationwide population-based data are sparsely available. We describe the incidence of pericarditis and myocarditis by age categories and sex after COVID-19 mRNA vaccination from a nationwide mass vaccination programme in Singapore.
METHODS:
The incidence of adjudicated cases of pericarditis and myocarditis following COVID-19 mRNA vaccination that were reported to the vaccine safety committee between January to July 2021 was compared with the background incidence of myocarditis in Singapore.
RESULTS:
As of end July 2021, a total of 34 cases were reported (9 pericarditis only, 14 myocarditis only, and 11 concomitant pericarditis and myocarditis) with 7,183,889 doses of COVID-19 mRNA vaccine administered. Of the 9 cases of pericarditis only, all were male except one. The highest incidence of pericarditis was in males aged 12-19 years with an incidence of 1.11 cases per 100,000 doses. Of the 25 cases of myocarditis, 80% (20 cases) were male and the median age was 23 years (range 12-55 years) with 16 cases after the second dose. A higher-than-expected number of cases were seen in males aged 12-19 and 20-29 years, with incidence rates of 3.72 and 0.98 case per 100,000 doses, respectively.
CONCLUSION
Data from the national registry in Singapore indicate an increased incidence of pericarditis and myocarditis in younger men after COVID-19 mRNA vaccination.
Adolescent
;
Adult
;
COVID-19/prevention & control*
;
COVID-19 Vaccines/adverse effects*
;
Child
;
Female
;
Humans
;
Male
;
Middle Aged
;
Myocarditis/etiology*
;
Pericarditis/etiology*
;
RNA, Messenger
;
SARS-CoV-2
;
Vaccination/adverse effects*
;
Vaccines, Synthetic
;
Young Adult
;
mRNA Vaccines
5.Paediatric living-donor liver and kidney transplantation during COVID-19.
Vidyadhar Padmakar MALI ; Marion AW ; Kar Hui NG ; Sivaramakrishnan Venkatesh KARTHIK ; Michelle TAN ; Sharon TEO ; Perry Yew Weng LAU ; Yoke Lin NYO ; Dale Ser Kheng Lincoln LOH ; Ho Yee TIONG ; Seng Hock QUAK ; Hui Kim YAP
Annals of the Academy of Medicine, Singapore 2022;51(2):119-121
6.The correlation of population, population density, age, and sex to the number of confirmed cases of COVID-19 among local government units in the National Capital Region.
Ron Carlo C. Vedan ; Alixson M. Velasquez ; Nina Patricia S. Ventura ; Estrella Natalia O. Vigo ; Cristina P. Villanueva ; Crizelle Keith G. Villanueva ; Geneve S. Villareal ; Kimberly Anne D. Wee ; Victor Antonio F. Yañ ; ga ; Krista Mari P. Yap ; Ally Norr G. Yee ; Dan H. Zambrano III ; Rik James S. Zantua ; Leopoldo P. Sison, Jr.
Health Sciences Journal 2022;11(1):48-55
INTRODUCTION:
The NCR had amassed 752,668 cases of COVID-19 as of September 2021, the highest among the regions in the Philippines. This study aimed to determine the correlation between population, population density, age, and sex with the number of cases among local government units (LGU) in the National Capital Region (NCR).
METHODS:
The data for population, population density, age, and sex distribution of the LGUs of NCR were retrieved from the 2015 Philippine census while the data for cases were from DOH’s COVID-19 Tracker. Pearson correlation coefficient was computed to determine the correlation between population, population density and cases. Phi and Cramer’s V statistic were computed to determine associations between sex, age groups, and cases.
RESULTS:
There was little or no correlation between population density and number of cases (r = 0.236) but was good (r = 0.905) when Quezon City was excluded for being an outlier. There was good correlation between population and number of cases (r = 964, p < 0.001). There was very weak to no association between sex and number of COVID-19 cases. There was a statistically significant moderate association between age and COVID-19 cases (f = 0.145, p < 0.001).
CONCLUSION
The study has shown that population density and population have a good correlation with the number of COVID-19 after Quezon City was removed as a data point. There is a moderate association between age and number of COVID-19 cases. There is a very weak to no association between sex and COVID-19 cases.
7.An Unusual Presentation of Neurotized Congenital Giant Melanocytic Nevus and Type 1 Neurofibromatosis: A Diagnostic Challenge
Qin Jian Low ; Tzyy Huei Lim ; Ri An Lee ; Seng Wee Cheo ; Noor &lsquo ; Ain Mohd Nasir ; Ikmal Hisyam Bakrin ; Wen Yee Evelyn Yap
Malaysian Journal of Medicine and Health Sciences 2022;18(No.1):372-374
Among the three subtypes of neurofibromatosis are type 1 and 2 neurofibromatosis and schwannomatosis, von
Recklinghausen disease also known as type 1 neurofibromatosis has an autosomal dominant inheritance. It is the
commonest form as and presents with numerous café-au-lait macules and neurofibromas. Giant congenital melanocytic nevus (CGMN) on the other hand is characterized by a melanocytic proliferation that present at birth. CGMN
develops due to a defective embryonic pigment cell (melanocyte) precursors development and are often present at
birth. Giant congenital melanocytic nevus (CGMN) and type 1 neurofibromatosis may occur together rarely. Clinicians should be aware of the rare presentation of both CGMN and type 1 neurofibromatosis in a patient.
8.TEST YOUR KNOWLEDGE - Rash, red eyes, lip erosions and genital ulcer – What is the diagnosis?
Malaysian Family Physician 2022;17(1):99-102
Maculopapular eruptions are frequently described as large areas of rash characterised by red, small, confluent bumps. They are frequently puzzling for the attending clinician due to the multiple possible aetiologies. Accurate diagnosis is important because treatment varies depending on the aetiology, and some rashes can be life-threatening if not treated promptly. Common aetiologies implicated include drug allergies, infection-related (for example: viral exanthems, scarlet fever) and autoimmune conditions (for example: Still’s disease). We report a case of maculopapular eruption associated with mucocutaneous involvement and systemic symptoms. The possible differential diagnoses and approach to the management of this patient are discussed.
Syphilis
;
Chancre
;
HIV
;
Sexually Transmitted Diseases
9.An interesting case of lip swelling!
Malaysian Family Physician 2021;16(2):70-72
Melkersson-Rosenthal Syndrome (also termed “Miescher-Melkersson-Rosenthal Syndrome”) or (MRS), is a rare neurocutaneous disorder characterized by the clinical triad of recurring facial nerve paralysis, swelling of one or both lips and fissural tongue. We report a patient with Melkersson-Rosenthal Syndrome initially referred to Dermatology Department as angioedema. The diagnosis and treatment procedures were presented with special emphasis to the clinical features of this rare condition.
10.Knowledge, attitude, practice and perception on sunscreen and skin cancer among doctors and pharmacists
Qin Jian Low ; Kuo Zhau Teo ; Tzyy Huei Lim ; Seng Wee Cheo ; Wen Yee Evelyn Yap
The Medical Journal of Malaysia 2021;76(2):212-217
Introduction: Excessive ultraviolet light (UV) can cause
premature skin aging and potentially skin cancer. Currently
there is a lack of awareness among health care
professionals and the public on sun protection. The
objectives of this study were to determine knowledge on
sunscreen and skin cancer among health care
professionals, to evaluate the knowledge, attitude, practice
and perception of doctors and pharmacists toward the
usage of sunscreen as protection against UV radiation.
Materials And Methods: This is a cross-sectional study
conducted among doctors and pharmacists in Hospital
Sultanah Nora Ismail, Batu Pahat, Johor, Malaysia.
Questionnaires were used in this study.
Results: A total of 384 participants completed the
questionnaires. The participants consisted of 323 doctors
(84.1%) and 61 pharmacists (15.9%). The age group of the
participants ranged between 25 till 55 years old. Ninety
doctors (27.9%) and thirty-one pharmacists (51.0%) reported
used sunscreen daily (p<0.001). This finding showed that
there was a deficit in the practice of sun protection.
Pharmacists scored a higher knowledge score of median 12
(IQR=3.0) while the doctors scored 11 (IQR=2.0). This study
showed a significant association between ethnicity and skin
cancer knowledge (p<0.05).
Conclusion: This study demonstrated a lack of knowledge of
sunscreen and skin cancer prevention among health care
practitioners. This finding supports better medical
education program on this topic.


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