1.Osteochondral lesions of the talus.
Kelvin T L CHEW ; Eileen TAY ; Yue Shuen WONG
Annals of the Academy of Medicine, Singapore 2008;37(1):63-68
Osteochondral lesions of the talus can present as a late complication of ankle injuries. As the talus is largely covered by articular cartilage, it has a limited ability for repair. Early and accurate diagnosis is important as talar integrity is required for optimal function of the ankle. The common presentation is chronic ankle pain with a history of ankle trauma. Conservative treatment involving a period of casting and non-weight-bearing is recommended for acute, non-displaced osteochondral lesions. Surgical management is recommended for unstable lesions or failed conservative management.
Humans
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Osteochondritis
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etiology
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physiopathology
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surgery
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therapy
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Talus
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physiopathology
3.Early outcome following emergency gastrectomy.
Ker Kan TAN ; Terence J L QUEK ; Ningyan WONG ; Kelvin K W LI ; Khong Hee LIM
Annals of the Academy of Medicine, Singapore 2012;41(10):451-456
INTRODUCTIONEmergency gastrectomy has been shown to be associated with poor morbidity and mortality rates. The aims of this study were to review the outcomes of emergency gastrectomy in our institution and to determine any factors that were associated with worse perioperative outcomes.
MATERIALS AND METHODSA retrospective review of all patients who underwent emergency gastrectomy for various indications from October 2003 to April 2009 was performed. All the complications were graded according to the classification proposed by Clavien and group.
RESULTSEighty-fi ve patients, median age 70 (range, 27 to 90 years), underwent emergency gastrectomy. The indications for the surgery included perforation, bleeding and obstruction in 45 (52.9%), 32 (37.6%) and 8 (9.4%) patients, respectively. The majority of the patients (n = 46, 54.1%) had an American Society of Anesthesiologists (ASA) score of 3. Partial or subtotal, and total gastrectomy were performed in 75 (88.2%) and 10 (11.8%) patients, respectively. Malignancy was the underlying pathology in 33 (38.8%) patients. The perioperative mortality rate was 21.2% (n = 18) with another 27 (31.8%) patients having severe complications. Twelve (14.1%) patients had a duodenal stump leak. The independent factors predicting worse perioperative complications included high ASA score and in perforation cases. Other factors such as malignancy, age and extent of surgery were not signifi cantly related. The presence of a duodenal stump leak was the only independent factor predicting mortality.
CONCLUSIONEmergency gastrectomy is associated with dismal morbidity and mortality rates. Patients with high ASA scores and perforations fared worse, and duodenal stump leak increases the risk of mortality.
Adult ; Aged ; Aged, 80 and over ; Emergencies ; Female ; Gastrectomy ; mortality ; Humans ; Logistic Models ; Male ; Middle Aged ; Multivariate Analysis ; Postoperative Complications ; epidemiology ; etiology ; Retrospective Studies ; Risk Factors ; Severity of Illness Index ; Stomach Diseases ; mortality ; surgery ; Treatment Outcome
5.A cross-sectional study of primary-care physicians in Singapore on their concerns and preparedness for an avian influenza outbreak.
Teck Yee WONG ; Gerald C H KOH ; Seng Kwing CHEONG ; Meena SUNDRAM ; Kelvin KOH ; Sin Eng CHIA ; David KOH
Annals of the Academy of Medicine, Singapore 2008;37(6):458-464
INTRODUCTIONDuring an avian influenza (AI) pandemic, primary-care physicians (PCPs) are expected to play key roles in the prevention and control of the disease. Different groups of PCPs could have different concerns and preparedness level. We assessed the concerns, perceived impact and preparedness for an outbreak among PCPs in Singapore.
MATERIALS AND METHODSA cross-sectional survey of PCPs working in private practice (n=200) and public clinics (n=205) from March to June 2006 with an anonymous self-administered questionnaire on concerns (12- items), perceived impact (10 items) and preparedness (10 items) for an outbreak.
RESULTSTwo hundred and eighty-five PCPs responded - 149 (response rate: 72.7%) public and 136 (response rate: 67.3%) private. The majority were concerned about risk to their health from their occupation (95.0%) and falling ill with AI (89.7%). Most (82.5%) accepted the risk and only 33 (11.8%) would consider stopping work. For perceived impact, most felt that people would avoid them (69.6%) and their families (54.1%). The majority (81.3%) expected an increased workload and feeling more stressed at work (86.9%). For preparedness, 78.7% felt personally prepared for an outbreak. Public PCPs were more likely to be involved in infection-control activities and felt that their workplaces were prepared.
CONCLUSIONSMost PCPs felt personally prepared for an outbreak but were concerned about their exposure to AI and falling ill. Other concerns included social ostracism for themselves and their families. Public PCPs appeared to have a higher level of preparation. Addressing concerns and improving level of preparedness are crucial to strengthen the primary-care response for any AI outbreak.
Adult ; Animals ; Birds ; Communicable Disease Control ; methods ; Cross-Sectional Studies ; Disease Outbreaks ; prevention & control ; statistics & numerical data ; Female ; Health Care Surveys ; Humans ; Influenza A Virus, H5N1 Subtype ; isolation & purification ; Influenza in Birds ; epidemiology ; Male ; Middle Aged ; Odds Ratio ; Physicians, Family ; statistics & numerical data ; Risk Factors ; Singapore ; epidemiology ; Surveys and Questionnaires
6.Concerns, perceived impact and preparedness in an avian influenza pandemic--a comparative study between healthcare workers in primary and tertiary care.
Teck Yee WONG ; Gerald Ch KOH ; Seng Kwing CHEONG ; Heow Yong LEE ; Yuke Tien FONG ; Meena SUNDRAM ; Kelvin KOH ; Sin Eng CHIA ; David KOH
Annals of the Academy of Medicine, Singapore 2008;37(2):96-102
INTRODUCTIONWith the potential threat of an avian influenza (AI) pandemic, healthcare workers (HCWs) are expected to play important roles, and they encounter significant stress levels from an expected increase in workload. We compared the concerns, perceived impact and preparedness for an AI pandemic between HCWs working in public primary care clinics and a tertiary healthcare setting.
MATERIALS AND METHODSAn anonymous, self-administered questionnaire was given to 2459 HCWs working at 18 public polyclinics (PCs) and a tertiary hospital (TH) in Singapore from March to June 2006. The questionnaire assessed work-related and non-work-related concerns, perceived impact on personal life and work as well as workplace preparedness.
RESULTSWe obtained responses from 986 PC and 873 TH HCWs (response rate: 74.6% and 76.7%). The majority in both groups were concerned about the high AI risk from their occupation (82.7%) and falling ill with AI (75.9%). 71.9% accepted the risk but 25.5% felt that they should not be looking after AI patients with 15.0% consider resigning. HCWs also felt that people would avoid them (63.5%) and their families (54.1%) during a pandemic. The majority expected an increased workload and to feel more stressed at work. For preparedness, 74.2% felt personally prepared and 83.7% felt that their workplaces were prepared for an outbreak. TH HCWs were more likely to be involved in infection-control activities but the perception of infection-control preparedness in both groups was high (>80.0%).
CONCLUSIONSHCWs in both public primary and tertiary healthcare settings felt prepared, personally and in their workplaces, for a pandemic. Their main concerns were risks of falling ill from exposure and the possibility of social ostracism of themselves and their families. Preparedness levels appeared high in the majority of HCWs. However, concerns of HCWs could affect their overall effectiveness in a pandemic and should be addressed by incorporating strategies to manage them in pandemic planning.
Adolescent ; Adult ; Aged ; Animals ; Attitude of Health Personnel ; Birds ; Disaster Planning ; Disease Outbreaks ; Female ; Humans ; Infectious Disease Transmission, Patient-to-Professional ; prevention & control ; Influenza A Virus, H5N1 Subtype ; pathogenicity ; Influenza in Birds ; transmission ; Influenza, Human ; epidemiology ; prevention & control ; transmission ; virology ; Male ; Middle Aged ; Primary Health Care ; Singapore
7.Post-thyroidectomy neck ultrasonography in patients with thyroid cancer and a review of the literature.
Sumbul ZAHEER ; Andrew TAN ; Ee Sin ANG ; Kelvin S H LOKE ; Yung Hsiang KAO ; Anthony GOH ; Wai Yin WONG
Singapore medical journal 2014;55(4):177-; quiz 183
The importance of routine neck ultrasonography for the detection of unsuspected local or nodal recurrence of thyroid cancer following thyroidectomy (with or without neck dissection) is well documented in many journal articles and international guidelines. Herein, we present a pictorial summary of the sonographic features of benign and malignant central neck compartment nodules and cervical lymph nodes via a series of high-quality ultrasonographic images, with a review of the literature.
Female
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Humans
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Male
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Neck
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diagnostic imaging
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surgery
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Neck Dissection
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Singapore
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Thyroid Neoplasms
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diagnostic imaging
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surgery
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Thyroid Nodule
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diagnostic imaging
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Thyroidectomy
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methods
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Ultrasonography
8.Conversion of One-Anastomosis Gastric Bypass (OAGB) to Roux-en-Y Gastric Bypass (RYGB) is Effective in Dealing with Late Complications of OAGB: Experience from a Tertiary Bariatric Center and Literature Review
Kelvin VOON ; Chih-Kun HUANG ; Anand PATEL ; Lai-Fen WONG ; Yao-Cheng LU ; Ming-Che HSIN
Journal of Metabolic and Bariatric Surgery 2021;10(1):32-41
Purpose:
Both primary and revisional bariatric surgery are on the rise due to global obesity pandemic. This study aimed to assess the indications for revision after one-anastomosis gastric bypass (OAGB) and the outcomes after laparoscopic conversion of OAGB to roux-en-y gastric bypass (RYGB).
Materials and Methods:
Retrospective review on patients that had undergone conversion of OAGB to RYGB between June 2007-June 2019 in a tertiary bariatric center, followed by literature review.
Results:
Out of 386 revisional bariatric surgery, a total of 14 patients underwent laparoscopic conversion of OAGB to RYGB. The mean age was 44.7 with 71% female. The mean pre-revision BMI was 29.2 kg/m2 . The primary indications for revision were bile reflux (n=7), marginal ulcer (n=3), inadequate weight loss or weight regain (IWL/WR) (n=3) and protein-calorie malnutrition (n=1). Conversion of OAGB to RYGB was completed laparoscopically in all cases.The mean length of stay was 4.1 days. There was no intraoperative or early post-operative complication. The mean total weight loss (rTWL%) after revision at year one, year three and year five post-revision were 11.5%, 18.1% and 29.1%, respectively. All patients achieved resolution of bile reflux and marginal ulcer. There was no mortality in this cohort.
Conclusion
Bile reflux, marginal ulcer, IWL/WR and malnutrition were the main indications for revision after OAGB in this study. In concordance with the available evidence, laparoscopic conversion of OAGB to RYGB was safe and effective in dealing with late complications of OAGB.
9.Depression after Subarachnoid Hemorrhage: A Systematic Review
Wai Kwong TANG ; Lisha WANG ; George KWOK CHU WONG ; Gabor S. UNGVARI ; Fumihiko YASUNO ; Kelvin K.F. TSOI ; Jong S. KIM
Journal of Stroke 2020;22(1):11-28
Background:
and Purpose Depression is common and debilitating illness accompanying many neurological disorders including non-traumatic subarachnoid hemorrhage (SAH). The aim of this systematic review was to identify and critically appraise all published studies that have reported the frequency, severity and time course of depression after SAH, the factors associated with its development and the impact of depression on patients’ quality of life after SAH.
Methods:
The PubMed database was searched for studies published in English that recruited at least 40 patients (>18 years old) after SAH who were also diagnosed with depression.
Results:
Altogether 55 studies covering 6,327 patients met study entry criteria. The frequency of depression ranged from 0% to 61.7%, with a weighted proportion of 28.1%. Depression remained common even several years after the index SAH. Depression after SAH was associated with female sex, premorbid depression, anxiety, substance use disorders or any psychiatric disorders, and coping styles. Comorbid cognitive impairment, fatigue, and physical disability also increased the risk of depression. Aneurysmal SAH and infarction may be related to depression as well. Depression reduces the quality of life and life satisfaction in patients after SAH.
Conclusions
Depression is common after SAH and seems to persist. Further research is needed to clarify its time course and identify the neuroendocrine and neurochemical factors and brain circuits associated with the development of post-SAH depression. Randomized controlled treatment trials targeting SAH-related depression are warranted.
10.Conversion of One-Anastomosis Gastric Bypass (OAGB) to Roux-en-Y Gastric Bypass (RYGB) is Effective in Dealing with Late Complications of OAGB: Experience from a Tertiary Bariatric Center and Literature Review
Kelvin VOON ; Chih-Kun HUANG ; Anand PATEL ; Lai-Fen WONG ; Yao-Cheng LU ; Ming-Che HSIN
Journal of Metabolic and Bariatric Surgery 2021;10(1):32-41
Purpose:
Both primary and revisional bariatric surgery are on the rise due to global obesity pandemic. This study aimed to assess the indications for revision after one-anastomosis gastric bypass (OAGB) and the outcomes after laparoscopic conversion of OAGB to roux-en-y gastric bypass (RYGB).
Materials and Methods:
Retrospective review on patients that had undergone conversion of OAGB to RYGB between June 2007-June 2019 in a tertiary bariatric center, followed by literature review.
Results:
Out of 386 revisional bariatric surgery, a total of 14 patients underwent laparoscopic conversion of OAGB to RYGB. The mean age was 44.7 with 71% female. The mean pre-revision BMI was 29.2 kg/m2 . The primary indications for revision were bile reflux (n=7), marginal ulcer (n=3), inadequate weight loss or weight regain (IWL/WR) (n=3) and protein-calorie malnutrition (n=1). Conversion of OAGB to RYGB was completed laparoscopically in all cases.The mean length of stay was 4.1 days. There was no intraoperative or early post-operative complication. The mean total weight loss (rTWL%) after revision at year one, year three and year five post-revision were 11.5%, 18.1% and 29.1%, respectively. All patients achieved resolution of bile reflux and marginal ulcer. There was no mortality in this cohort.
Conclusion
Bile reflux, marginal ulcer, IWL/WR and malnutrition were the main indications for revision after OAGB in this study. In concordance with the available evidence, laparoscopic conversion of OAGB to RYGB was safe and effective in dealing with late complications of OAGB.