3.Underdiagnosis of delirium on admission and prediction of patients who will develop delirium during their inpatient stay: a pilot study.
Yuin Cheng CHIN ; Gerald Choon Huat KOH ; Yee Kian TAY ; Chay Hoon TAN ; Reshma Aziz MERCHANT
Singapore medical journal 2016;57(1):18-21
INTRODUCTIONThe study aimed to determine the prevalence and documentation of delirium among the elderly and if the Clock Drawing Test (CDT) can be used to predict which patients had delirium on admission and those who may develop delirium during their stay in acute medical wards.
METHODSA single researcher performed the Mini-Mental State Examination (MMSE) and CDT on admission and discharge of 57 elderly adults at the National University Hospital, Singapore. Delirium was defined as a ≥ 3-point improvement or ≥ 2-point decline in MMSE scores from admission to discharge, where a fall denotes development of delirium and a rise denotes resolution. The case notes of the same patients were reviewed for documentation of delirium. All inpatients from two acute medical wards were examined. One CDT score and a pair of MMSE scores were collected from each patient.
RESULTSA total of 57 patients (28 male, 29 female) were involved in the study. Their mean age was 76.0 ± 8.7 years. The prevalence of delirium based on MMSE scores was 40.4%; 16 patients had delirium on admission while seven developed delirium during their inpatient stay. However, delirium was documented in the case notes of only 7 (30%) of the 23 patients. CDT score was better than baseline MMSE score at predicting a decline in MMSE score.
CONCLUSIONThe prevalence of delirium in the acute medical setting is high but underdiagnosed. The CDT may be a good screening tool to identify patients at risk of delirium during their inpatient stay. Baseline cognition screening should be performed in every elderly patient admitted to hospital.
Aged ; Cognition ; physiology ; Delirium ; diagnosis ; epidemiology ; physiopathology ; Diagnostic Errors ; Female ; Follow-Up Studies ; Humans ; Inpatients ; Male ; Middle Aged ; Neuropsychological Tests ; Pilot Projects ; Prevalence ; Prognosis ; Retrospective Studies ; Risk Factors ; Severity of Illness Index ; Singapore ; epidemiology
4.Effect of autologous mesenchymal stem cells on biological healing of allografts in critical-sized tibial defects simulated in adult rabbits.
Aziz NATHER ; Vikram DAVID ; Janelle W H TENG ; Choon Wei LEE ; Barry P PEREIRA
Annals of the Academy of Medicine, Singapore 2010;39(8):599-606
INTRODUCTIONThis study evaluated the effect of autologous bone marrow derived adult Mesenchymal Stem Cells (MSCs) on the biological healing of weight bearing diaphyseal bone allograft in the tibia of adult rabbits.
MATERIALS AND METHODSForty Adult New Zealand White Rabbits divided into 3 groups (Autograft, Allograft or Allograft impregnated with MSCs) with 12 rabbits in each group were used for the study. A 1.5 cm of cortical bone segment was excised from the rabbit's right tibia. The segment was replaced by an Autograft, Allograft or Allograft loaded with MSCs, depending on which group the rabbit was assigned. Internal fixation was performed using a 9-hole Mini-compression Plate and Cerclage Wires. Rabbits were sacrificed at end of observation periods of 12, 16 and 24 weeks. Specimens procured were assessed clinically and radiologically and fixed in 10% buffered formalin. For each specimen, 5 μm undecalcified sections were cut and stained with Von Kossa and Toluidine Blue stains. Histomorphometery was then performed.
RESULTSOur study showed that addition of autologous MSCs to diaphyseal allograft segments enhances and accelerates not just the union at host graft junctions and also the biological incorporation of the allograft segment as shown by Resorption Index, New-Bone Formation Index and Osteocyte Index.
CONCLUSIONSThe addition of autologous MSCs to deep frozen cortical allograft segments improved the host - allograft union rate and biological incorporation of diaphyseal allografts as shown by resorption activity, new bone formation and osteocyte cell counts.
Animals ; Disease Models, Animal ; Male ; Mesenchymal Stem Cell Transplantation ; methods ; Mesenchymal Stromal Cells ; Rabbits ; Tibia ; abnormalities ; Transplantation, Homologous ; Wound Healing
5.Hoarding in Singapore.
Kenneth Wei-Qiang CHOO ; Wei Liang LEE ; Choon How HOW ; Beng Yeong NG
Singapore medical journal 2015;56(9):484-quiz 487
Hoarding refers to an excessive acquisition of objects and inability to part with apparently valueless possessions. While it can lead to excessive clutter, distress and disability, it is important to note that not all cases of hoarding are pathological. This article aims to suggest how one can make recommendations to patients and families when they encounter someone exhibiting hoarding behaviour. It also introduces the Hoarding Task Force and relevant legislation in Singapore to address the issue of hoarding in the community.
Government Agencies
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Hoarding Disorder
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diagnosis
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epidemiology
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Humans
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Referral and Consultation
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Residence Characteristics
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Safety
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Singapore
7.A simplified approach to haemoptysis.
Zi Yang Trevor ONG ; Hui Zhong CHAI ; Choon How HOW ; Jansen KOH ; Teck Boon LOW
Singapore medical journal 2016;57(8):415-418
Haemoptysis is commonly seen in the healthcare setting. It can lead to life-threatening complications and therefore requires careful evaluation of the severity and status of the patient. Common causes of haemoptysis can be broadly grouped into five main categories: infective, neoplastic, vascular, autoimmune and drug-related. Detailed history-taking and careful physical examination are necessary to provide a diagnosis and assess the patient's haemodynamic status. Physicians must have a clear understanding of the criteria for further investigations and the need for a specialist or inpatient referral for management.
Diagnosis, Differential
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Female
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Hemodynamics
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Hemoptysis
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diagnosis
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diagnostic imaging
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therapy
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Hemorrhage
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Humans
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Medical History Taking
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Middle Aged
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Primary Health Care
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Referral and Consultation
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Tomography, X-Ray Computed