1.Pitfalls and Red Flags in Common Clinical Syndromes
The Singapore Family Physician 2014;40(1 (Supplement)):33-37
Awareness of pitfalls in common clinical symptoms is important. Not all patients with ACS presents with chest pains (beware of patients presenting with syncope, diaphoresis, dyspnoea, pain upper back, etc.). In a breathless patient, anxiety and other psychiatric conditions should only be considered as the diagnosis after careful exclusion of other life threatening causes: metabolic acidosis, partially occluded upper airway, bronchospasm, and pulmonary embolism. In a patient with headaches, intracranial haemorrhage, meningitis/ encephalitis, and brain mass lesion need to be considered in the differential diagnosis. The elderly patient presenting with acute abdominal pain will require FPs to maintain a high index of suspicion for potential life threatening causes. Possible causes of serious backache are ACS, AD, AAA, and spinal cord compression. In the wounded patient, there is a need to determine the medical condition that may have resulted in the patient’s injury, and patient’s risk profile is as important as the wound profile for correct management. In the pregnant patient, dyspnea can be due to pulmonary embolism, or heart failure; placenta abruption from abdominal injury may not have the classical triad of pain, tenderness or vaginal bleeding.
2.Pitfalls and Red Flags in Common Clinical Syndromes
The Singapore Family Physician 2013;39(3):32-36
Awareness of pitfalls in common clinical symptoms is important. Not all patients with ACS presents with chest pains (beware of patients presenting with syncope, diaphoresis, dyspnoea, pain upper back, etc.). In a breathless patient, anxiety and other psychiatric conditions should only be considered as the diagnosis after careful exclusion of other life threatening causes: metabolic acidosis, partially occluded upper airway, bronchospasm, and pulmonary embolism. In a patient with headaches, intracranial haemorrhage, meningitis/ encephalitis, and brain mass lesion need to be considered in the differential diagnosis. The elderly patient presenting with acute abdominal pain will require FPs to maintain a high index of suspicion for potential life threatening causes. Possible causes of serious backache are ACS, AD, AAA, and spinal cord compression. In the wounded patient, there is a need to determine the medical condition that may have resulted in the patient’s injury, and patient’s risk profile is as important as the wound profile for correct management. In the pregnant patient, dyspnea can be due to pulmonary embolism, or heart failure; placenta abruption from abdominal injury may not have the classical triad of pain, tenderness or vaginal bleeding.
3.Potential impact of early physiotherapy in the emergency department for non-traumatic neck and back pain
Sohil POTHIAWALA ; Hao Yong PUA ; Mark LEONG
World Journal of Emergency Medicine 2017;8(2):110-115
BACKGROUND:Musculoskeletal complaints, especially non-traumatic neck and back pain, are routinely encountered in the emergency department (ED) and lead to ED overcrowding, a burgeoning wait time for physiotherapy and outpatient orthopedic reviews. The study aimed to evaluate the impact of early physiotherapy evaluation and treatment (EPET) vs. standard care (SC) on clinical outcomes for patients presenting to the ED with non-traumatic neck and back pain. METHODS:A retrospective observational study of 125 patients who presented to the ED with non-traumatic neck and back pain with/without peripheral symptoms from July 2010 to February 2011. Neck Disability Index (NDI), Modified Oswestry Low Back Pain Disability Questionnaire (MODI) and 11-point Numeric Pain Rating Scale were used as outcome measures and compared between groups at a mean of 34 days from their initial ED visit. RESULTS:We identified a total of 125 patients. EPET group comprised 62 patients (mean age, 45 years; men, 63%) and SC group comprised 63 patients (mean age, 45 years; men, 43%). The EPET and SC groups received physiotherapy at a median of 4 and 34 days respectively from their first ED visit. EPET patients had significantly lower levels of disability (9.0% vs. 33.4%, Welch t-test, P<0.001) and pain (median value, 1 vs. 4 points, Mann-Whitney U-test, P<0.001) compared with SC patients. CONCLUSION:Early access to physiotherapy in ED was associated with reduced pain and disability levels. EPET protocol can potentially decrease the demand on outpatient orthopedic services, thereby freeing up available resources to treat patients who are more likely to benefit from it.
4.Understanding the super-spreading events of SARS in Singapore.
Mark I C CHEN ; Seng-Chee LOON ; Hoe-Nam LEONG ; Yee-Sin LEO
Annals of the Academy of Medicine, Singapore 2006;35(6):390-394
INTRODUCTIONIt has been noted that SARS transmission is characterised by a few super-spreading events (SSEs) giving rise to a disproportionate number of secondary cases. Clinical and environmental features surrounding the index cases involved were compared with cases in non- SSEs.
MATERIALS AND METHODSData on 231 cases of probable SARS admitted to Tan Tock Seng Hospital (TTSH) were used. Index cases directly causing 10 or more secondary cases were classified as having been involved in SSEs; all others were defined as non-SSEs.
RESULTSOnly 5 cases were involved in SSEs; all 5 were isolated on day 5 of illness or later, and spent at least a brief period in a non-isolation ward; in contrast, amongst the 226 non-SSE cases, only 40.7% and 4.0% were isolated late and admitted to non-isolation wards respectively, and only 3.1% had both these environmental features present; the differences were highly significant (P = 0.012, P <0.001 and P <0.001 by Fisher's Exact test). When compared to 7 non-SSE cases with delayed isolation and an admission to non-isolation wards, SSEs were more likely to have co-morbid disease or require ICU care at time of isolation (P = 0.045 for both factors).
CONCLUSIONSSEs were likely due to a conglomeration of environmental factors of delayed isolation and admission to a non-isolation ward, coupled with severe disease stage at time of isolation.
Adult ; Female ; Humans ; Male ; Middle Aged ; Severe Acute Respiratory Syndrome ; epidemiology ; transmission ; Singapore ; epidemiology
5.Accuracy of Thoracolumbar Pedicle Screw Insertion Based on Routine Use of Intraoperative Imaging and Navigation
Pirateb Paramasivam Meenakshi SUNDARAM ; Jacob Yoong-Leong OH ; Mark TAN ; Colum Patrick NOLAN ; Chun Sing YU ; Ji Min LING
Asian Spine Journal 2021;15(4):491-497
Retrospective review. To determine the accuracy of thoracolumbar pedicle screw insertion with the routine use of three-dimensional (3D) intraoperative imaging and navigation over a large series of screws in an Asian population. The use of 3D intraoperative imaging and navigation in spinal surgery is aimed at improving the accuracy of pedicle screw insertion. This study analyzed 2,240 pedicle screws inserted with the routine use of intraoperative navigation. It is one of very few studies done on an Asian population with a large series of screws. Patients who had undergone thoracolumbar pedicle screws insertion using intraoperative imaging and navigation between 2009 and 2017 were retrospectively analyzed. Computed tomography (CT) images acquired after the insertion of pedicle screws were analyzed for breach of the pedicle wall. The pedicle screw breaches were graded according to the Gertzbein classification. The breach rate and revision rate were subsequently calculated. A total of 2,240 thoracolumbar pedicle screws inserted under the guidance of intraoperative navigation were analyzed, and the accuracy of the insertion was 97.41%. The overall breach rate was 2.59%, the major breach rate was 0.94%, and the intraoperative screw revision rate was 0.7%. There was no incidence of return to the operating theater for revision of screws. The routine use of 3D navigation and intraoperative CT imaging resulted in consistently accurate pedicle screw placement. This improved the safety of spinal instrumentation and helped in avoiding revision surgery for malpositioned screws.
6.Early Postoperative Loss of Disc Height Following Transforaminal and Lateral Lumbar Interbody Fusion: A Radiographic Analysis
Arun-Kumar KALIYA-PERUMAL ; Tamara Lee Ting SOH ; Mark TAN ; Jacob Yoong-Leong OH
Asian Spine Journal 2022;16(4):471-477
Methods:
Retrospectively, patients who underwent TLIF and LLIF for various degenerative conditions were shortlisted. Each of their fused levels with the cage in situ was analyzed independently, and the preoperative, postoperative, and follow-up disc height measurements were compared between the groups. In addition, the total disc height loss since surgery was calculated at final follow-up and was compared between the groups.
Results:
Forty-six patients (age, 64.1±8.9 years) with 70 cage levels, 35 in each group, were selected. Age, sex, construct length, preoperative disc height, cage height, and immediate postoperative disc height were similar between the groups. By 3 months, disc height of the TLIF group was significantly less and continued to decrease over time, unlike in the LLIF group. By 1 year, the TLIF group demonstrated greater disc height loss (2.30±1.3 mm) than the LLIF group (0.89±1.1 mm). However, none of the patients in either group had any symptomatic complications throughout follow-up.
Conclusions
Although our study highlights the biomechanical advantage of LLIF over TLIF in maintaining disc height, none of the patients in our cohort had symptomatic complications or implant-related failures. Hence, TLIF, as it incorporates posterior decompression, remains a safe and reliable technique despite the potential for greater disc height loss.
7.Accuracy of Thoracolumbar Pedicle Screw Insertion Based on Routine Use of Intraoperative Imaging and Navigation
Pirateb Paramasivam Meenakshi SUNDARAM ; Jacob Yoong-Leong OH ; Mark TAN ; Colum Patrick NOLAN ; Chun Sing YU ; Ji Min LING
Asian Spine Journal 2021;15(4):491-497
Retrospective review. To determine the accuracy of thoracolumbar pedicle screw insertion with the routine use of three-dimensional (3D) intraoperative imaging and navigation over a large series of screws in an Asian population. The use of 3D intraoperative imaging and navigation in spinal surgery is aimed at improving the accuracy of pedicle screw insertion. This study analyzed 2,240 pedicle screws inserted with the routine use of intraoperative navigation. It is one of very few studies done on an Asian population with a large series of screws. Patients who had undergone thoracolumbar pedicle screws insertion using intraoperative imaging and navigation between 2009 and 2017 were retrospectively analyzed. Computed tomography (CT) images acquired after the insertion of pedicle screws were analyzed for breach of the pedicle wall. The pedicle screw breaches were graded according to the Gertzbein classification. The breach rate and revision rate were subsequently calculated. A total of 2,240 thoracolumbar pedicle screws inserted under the guidance of intraoperative navigation were analyzed, and the accuracy of the insertion was 97.41%. The overall breach rate was 2.59%, the major breach rate was 0.94%, and the intraoperative screw revision rate was 0.7%. There was no incidence of return to the operating theater for revision of screws. The routine use of 3D navigation and intraoperative CT imaging resulted in consistently accurate pedicle screw placement. This improved the safety of spinal instrumentation and helped in avoiding revision surgery for malpositioned screws.
8.Factors Influencing Early Disc Height Loss Following Lateral Lumbar Interbody Fusion
Arun-Kumar KALIYA-PERUMAL ; Tamara Lee Ting SOH ; Mark TAN ; Jacob Yoong-Leong OH
Asian Spine Journal 2020;14(5):601-607
Methods:
Seventy-two cage levels in 37 patients aged 62±10.2 years who underwent single or multilevel LLIF for degenerative spinal conditions were selected. Their preoperative and postoperative follow-up radiographs were used to measure the anterior disc height (ADH), posterior disc height (PDH), mean disc height (MDH), disc space angle (DSA), and segmental angle. Correlations between the loss of disc height and several factors, including age, construct length, preoperative lordosis, postoperative lordosis, disc height, cage dimensions, and cage position, were analyzed.
Results:
We found that the lateral interbody cages significantly increased ADH, PDH, MDH, and DSA after surgery (p <0.0001). However, there was a loss of disc height over time. All postoperative disc height parameters, especially the amount of increase in MDH (r =0.413, p <0.0001) after surgery, showed a significant positive association with early disc height loss. The levels demonstrating a significant (≥25%) height loss were those that exhibited a substantial height increase (128.3%, 4.6±3.0 to 10.5±5.6 mm) postoperatively. However, the levels that showed less than 25% height loss were those that exhibited, on average, only a 57.4% height increase post-operatively.
Conclusions
The greater the postoperative increase in disc height, the greater the disc height loss throughout early follow-up. Therefore, achieving an optimal disc height rather than overcorrection is an important surgical strategy to adopt when performing LLIF.
9.SARS in Singapore--predictors of disease severity.
Hoe-Nam LEONG ; Arul EARNEST ; Hong-Huay LIM ; Chee-Fang CHIN ; Colin S H TAN ; Mark E PUHAINDRAN ; Alex C H TAN ; Mark I C CHEN ; Yee-Sin LEO
Annals of the Academy of Medicine, Singapore 2006;35(5):326-331
INTRODUCTIONSevere acute respiratory syndrome (SARS) affected 8096 individuals in 29 countries, with 774 deaths. In Singapore, there were 238 cases of SARS with 33 deaths. A retrospective analysis was performed to identify predictors of poor outcome in patients with SARS locally.
MATERIALS AND METHODSClinical, laboratory and outcome data of 234 patients admitted to Tan Tock Seng Hospital and Singapore General Hospital were collected and analysed. Only data collected at the time of admission were used in the analysis for predictors of poor outcome. Adverse events were defined as admission to the intensive care unit or death.
RESULTSClinical (temperature, FiO2) and laboratory [leukocyte, lymphocyte, neutrophil, platelet, lactate dehydrogenase (LDH), albumin] trends in groups with and without an adversarial event were presented. Fifty patients experienced an adverse event. On univariate analysis, male gender, advanced age, presence of comorbidities, neutrophilia, lymphopaenia, hyponatraemia, hypoalbuminaemia, transaminitis and elevated LDH or C-reactive protein were found to be significant predictors. On multivariate analysis, predictors of poor outcome were increased age [odds ratio (OR) 1.73 for every 10-year increase; 95% CI, 1.35 to 2.21], neutrophilia (OR 1.06 for every 1 x 10(9)/L increase; 95% CI, 1.02 to 1.11) and high LDH (OR 1.17 for every 100 U/L increase; 95% CI, 1.02 to 1.34). None of the 12 paediatric patients had an adverse event.
CONCLUSIONAdvanced age, neutrophilia and high LDH predict poor outcomes in patients with SARS.
Adolescent ; Adult ; Aged ; Aged, 80 and over ; Antibodies, Viral ; analysis ; Child ; Child, Preschool ; DNA, Viral ; analysis ; Female ; Fluorescent Antibody Technique ; Humans ; Incidence ; Infant ; Male ; Middle Aged ; Retrospective Studies ; Reverse Transcriptase Polymerase Chain Reaction ; SARS Virus ; genetics ; immunology ; Severe Acute Respiratory Syndrome ; epidemiology ; virology ; Severity of Illness Index ; Singapore ; epidemiology ; Survival Rate
10.Prevalence of faecal incontinence in the community: a cross-sectional study in Singapore.
Jason Wei-Min LIM ; Christian HENG ; Mark Te-Ching WONG ; Choong-Leong TANG
Singapore medical journal 2014;55(12):640-643
INTRODUCTIONFaecal incontinence (FI) is a stigmatised condition that remains a silent affliction for many populations. To date, no local study has been performed to determine its prevalence in our population. The existing literature from the West has shown highly variable rates, ranging from 0.8% to 18.0%. The aim of this study was to determine the cross-sectional prevalence of FI in Singapore and to identify at-risk groups.
METHODSA door-to-door questionnaire survey was performed between February and March 2013. We randomly selected 1,000 individuals from the electoral roll to be surveyed using the validated Comprehensive Fecal Incontinence Questionnaire.
RESULTSA total of 381 participants agreed to be enrolled in the study. The mean age of the participants was 52 (range 21-86) years, and slightly more than half of the participants were female (52.8%). Among the female participants, 73.1% had children (78.8% underwent normal vaginal delivery). The overall prevalence of FI in our study population was 4.7%. The prevalence of FI was observed to be significantly associated with increasing age (p = 0.004) and female gender (p = 0.029); women were three times more likely to suffer from FI than men.
CONCLUSIONWith the ageing population of Singapore, the results of the present study provide further impetus to continue public outreach efforts as well as develop clinical programmes that address the growing need for specialist treatments for people with FI.
Adult ; Age Distribution ; Aged ; Aged, 80 and over ; Cross-Sectional Studies ; Delivery, Obstetric ; methods ; statistics & numerical data ; Fecal Incontinence ; epidemiology ; Female ; Humans ; Male ; Middle Aged ; Prevalence ; Risk Factors ; Sex Distribution ; Singapore ; epidemiology ; Surveys and Questionnaires ; Young Adult