Use of preinjury antiplatelet and oral anticoagulant agents on outcomes following blunt trauma in an Asian population: a 1:2 propensity score matched study.

BACKGROUND: Bleeding is a feared complication of antiplatelets (APTs) and oral anti-coagulants (OACs) use. Asians are at higher risk of bleeding from APT/OAC compared to Western population. Our study aims to investigate the impact of preinjury APT/OAC use on outcomes of moderate to severe blunt trauma. METHODS: This is a retrospective cohort study from Jan 2017 - Dec 2019 of all patients with moderate to severe blunt trauma. A 1:2 propensity score matching (PSM) analysis was performed to address for confounding factors. Our primary outcome was in-hospital mortality. Our secondary outcomes were severity of head injury and need for emergency surgery within the first 24 hours. RESULTS: There were 592 patients (APT/OAC n=72, no APT/OAC n=520) included in our study. The median age was 74 years in APT/OAC and 58 years in no APT/OAC. PSM resulted in 150 patients (APT/OAC n=50, no APT/OAC n=100). In the PSM cohort, more patients with APT/OAC use had ischemic heart disease (76% vs 0%, P<0.001). APT/OAC use was independently associated with higher in-hospital mortality (22.0% vs 9.0%, Odds ratio (OR) 3.00, 95% Confidence interval (CI): 1.05, 8.56, P=0.040) Severity of head injury (abbreviated injury scale in APT/OAC: 3.33 ± 1.53, vs 2.97 ± 1.43, P=0.380) and need for emergency surgery (APT/OAC 16.2% vs 11.0%, P=0.434) was comparable between APT/OAC and no APT/OAC. CONCLUSIONS: Preinjury APT/OAC use was associated with higher in-hospital mortality. Severity of head injury and need for emergency surgery within 24 hours from admission were comparable between APT/OAC use and no APT/OAC use.

Systematic review of isolated disseminated carcinomatosis of bone marrow from colorectal cancer.

BACKGROUND: Colorectal cancer (CRC) metastasis commonly occurs in the liver and lungs with bone metastasis rarely occurring in isolation. Disseminated carcinomatosis of bone marrow (DCBM) is extremely rare in CRC. We conducted a systematic review to provide more information on the diagnosis, treatment options, and prognosis of the condition. METHODS: Studies were identified by performing searches on MEDLINE and EMBASE electronic databases according to the PRISMA statement standards. We included a single patient whom we treated for metastatic CRC presenting with DCBM in our study. Statistical analysis was performed using SPSS software version 23.0. RESULTS: A search through 5502 unique studies yielded 14 studies that were eventually included. There was a total of 17 cases of DCBM in CRC with back pain and constitutional symptoms as the most common presenting complaints. DCBM in CRC was associated with markedly elevated CEA of 275.57 (95% CI 17.13-534.00). There was no predilection for site of primary tumour. Overall median survival was 120 days (95% CI 64.43-175.58). The median survival for patients who received chemotherapy was 240 days (95% CI 71.11-408.89), as compared to 9 days (95% CI 1.80-16.20) for patients who received best supportive treatment. CONCLUSION: DCBM from CRC is extremely rare. Bone marrow examination remains the gold standard for diagnosis. Colonic stenting or surgical diversion may be more appropriate than primary resection in obstructed CRC in view of the poor prognosis. Systemic chemotherapy shows promise in increasing median survival.

A rare case of retroperitoneal and mesenteric lymphangiomatosis.

Lymphagiomatosis are rare benign malformations of the lymphatic system. They are more commonly seen during childhood and are frequently asymptomatic and incidentally found in the adult patient. We report a case of a 31-year-old male who presented initially with melena. Computer tomography scan revealed multiple confluent, fluid-density lesions encasing the retroperitoneum and mesentery. A laparotomy and incisional biopsy of the mesenteric lesion was performed. Histologic examination demonstrated fibrofatty tissue with prominent, thick-walled endothelial-lined vessels. The histologic and computer tomography findings were consistent with a diagnosis of retroperitoneal and mesenteric lymphangiomatosis. The patient was subsequently discharged home well.

The Changing Epidemiology of Serious Trauma in the Elderly Population: An Increasing Concern of a Tertiary Hospital in Singapore.

INTRODUCTION: Although trauma is often seen in the young, there is a recent shift in this trend as more elderly patients are hospitalised for traumatic injuries. This study examined serious trauma in young and elderly patients and hypothesised that the increase in incidence of elderly serious trauma has led to greater burden of care in hospitals and health services. MATERIALS AND METHODS: Details of trauma patients admitted with an Injury Severity Score ≥9 or to the intensive care unit or high dependency unit of a tertiary acute hospital between 2004 and 2015 were retrospectively reviewed. Patients ≥65 years old who sustained low-impact trauma that resulted from same-level falls with isolated hip fractures or compression fractures of the vertebral column were excluded. Patients were classified as either elderly (≥65 years old, n = 5074) or young (<65 years old, n = 9088) and their baseline characteristics, complications rate and length of hospital stay were evaluated. RESULTS: Elderly patients ≥65 years old accounted for 51.2% of seriously injured patients after 2014 and their numbers are increasing at an annual rate of 16.5%. They also experienced longer hospital stay in the general ward than younger patients. CONCLUSION: The number of elderly trauma patients were thrice that of all trauma patients seen and they also required longer hospitalisation. This trend has led to greater burden of care in hospitals and health services in Singapore.

Traumatic diaphragmatic injuries: a retrospective review of a 12-year experience at a tertiary trauma centre.

INTRODUCTION: Traumatic diaphragmatic injuries (TDIs) are clinically challenging. We aimed to review TDIs treated at a tertiary trauma centre over a 12-year period. METHODS: This was a single-centre retrospective review of adult patients with TDIs treated between 1 January 2003 and 31 December 2014. Primary outcomes were mortality rates and Injury Severity Scores (ISS) associated with each TDI subtype. Secondary outcomes included proportions of TDIs diagnosed radiologically, operatively or during autopsy. We compared the TDI subtypes with respect to mechanism of injury, mortality rates and median ISS. Data was analysed using descriptive statistics. RESULTS: Among 46 patients studied, the TDI subtypes noted were acute diaphragmatic herniation (n = 14, 30.4%), tears (n = 22, 47.8%) and contusions (n = 10, 21.7%). Patients with these TDI subtypes had a mortality rate of 35.7%-100%, while the ISS ranges for survivors and deaths were 22.0-34.0 (interquartile range [IQR] 6.5-23.0) and 53.5-66.0 (IQR 16.0-28.5), respectively. TDIs were identified via chest radiography (n = 2/33, 6.1%) and computed tomography (n = 6/13, 46.2%). All survivors (n = 21) and deaths (n = 25) underwent open surgery or autopsy, respectively, which confirmed TDIs. Blunt traumas and penetrating traumas were more frequently associated with acute herniation/contusions and tears, respectively. There were statistically significant differences among the TDI subtypes in their mechanism of injury, mortality rate and median ISS of survivors. CONCLUSION: TDIs showed varying injury patterns with blunt versus penetrating mechanisms of injury, and were associated with significant mortality rates. Preoperative imaging had limited diagnostic use.

A review of stab wound injuries at a tertiary trauma centre in Singapore: are self-inflicted ones less severe?

INTRODUCTION: In Singapore, as strict laws are a strong deterrent against armed violence, little is known about the epidemiology of penetrating stab wound injuries. Our study aimed to investigate the epidemiology of stab wound injuries at a major trauma centre in Singapore and determine if there was a difference in severity between self-inflicted stab wound (SI) injuries and those inflicted by others (IO). METHODS: We retrospectively reviewed all penetrating injuries at Tan Tock Seng Hospital, and identified and categorised all stab wound injuries as SI or IO. Basic demographic information, injury severity characteristics and outcome data were compared between these two groups. A review of all mortalities was performed, including recording the causes of death. RESULTS: Between 2005 and 2010, there were a total of 149 stab wound injuries, of which 24 (16.1%) were SI and 125 (83.9%) were IO injuries. Patients tended to be young (mean age 34.1 ± 14.2 years). The mean Injury Severity Score was significantly different between the SI and IO groups (8.8 ± 6.5 vs. 12.3 ± 8.1; p = 0.03). In both groups, the majority underwent an operative procedure (83.3% vs. 85.6%) and had an average hospital stay of four days. CONCLUSION: The study confirms our hypothesis that SI injuries tend to be less severe than IO injuries and are more likely to occur at home rather than at a public area. This finding may be useful in the triage of patients with stab wound injuries.

Pulmonary Vein Pseudoaneurysm Secondary to Blunt Trauma: A Novel Management Strategy.

Traumatic pulmonary vein pseudoaneurysm is an extremely rare condition that is challenging to manage. We present a unique case of a pulmonary vein pseudoaneurysm from blunt trauma in a patient with previous ipsilateral decortication. The patient was treated with percutaneous transparenchymal access to the pulmonary vein pseudoaneurysm.

Multimodality imaging of splenic sclerosing angiomatoid nodular transformation.

Sclerosing angiomatoid nodular transformation (SANT) is an exceedingly rare, benign and proliferative vascular lesion that arises from the splenic red pulp. It is often an incidental finding on imaging. The diagnosis of SANT is confirmed via histopathological examination of the resected spleen. Herein, we present a case of SANT and describe its typical imaging characteristics. An asymptomatic 39-year-old man was found to have a 3.1 cm × 2.7 cm × 2.3 cm hypoechoic splenic lesion during abdominal ultrasonography, which was performed to investigate his elevated gamma-glutamyl transpeptidase and alanine transaminase levels. Contrast-enhanced computed tomography suggested a vascular splenic lesion, while magnetic resonance imaging demonstrated features consistent with SANT. In view of the increasing size of the lesion on follow-up imaging, the patient elected for splenectomy. Histopathological examination confirmed SANT, and the lesion was completely resected by laparoscopic splenectomy.

Adult rectosigmoid junction intussusception presenting with rectal prolapse.

Most cases of intussusception in adults present with chronic and nonspecific symptoms, and can sometimes be challenging to diagnose. We herein report on a patient with the rare symptom of colonic intussusceptions presenting with rectal prolapse and review the existing literature of similar case reports to discuss how to reach an accurate diagnosis. A 75-year-old woman with dementia presented with per rectal bleeding, rectal prolapse and lower abdominal pain. An operation was scheduled and a large sigmoid intussusception with a polyp as a leading point was found intraoperatively. She subsequently recovered well and was discharged. As large sigmoid intussusceptions may present as rectal prolapse, intussusception should be considered as a differential diagnosis for immobile patients, especially when the leading point is a lesion.

A 10-Year Profile of Trauma Admissions Caused by Interpersonal Violence: A Major Trauma Centre's Experience.

INTRODUCTION: This study aimed to characterise interpersonal violence victims admitted to a major trauma centre. MATERIALS AND METHODS: A retrospective cohort study of interpersonal violence victims who were admitted to our centre from 1 January 2001 to 31 December 2010 was conducted. Data were obtained from our trauma registry. RESULTS: Interpersonal violence victims constituted 444 (90.1% males and 9.9% females) out of a total of 8561 trauma admissions in the same time period. The average age was 36.6 years (range, 14 to 83 years). Majority were Chinese (53.4%) and Singaporeans (77.3%). The number of cases increased from 10 per year to 96 per year in the first 8 years, then decreased in the last 2 years (55 in year 2010). Time of injury was predominantly 0000 to 0559 hours (72.3%). Interpersonal violence mostly occurred in public spaces for both genders (88.7%). However, the number of females who were injured at home was significantly higher than males (P = 0.000). Blunt trauma (58.3%) was more common than penetrating trauma (41.7%). The average injury severity score (ISS) was 13.5 (range, 1 to 75); 34.9% of patients had major trauma (ISS >15). The average Glasgow coma scale (GCS) score was 13.5 (range, 3 to 15); 16.4% of patients had moderate-to-severe brain injury (GCS 3-8). Blunt trauma was significantly more likely to cause major trauma than penetrating trauma (P = 0.003). The sole case of firearm assault caused most morbi-mortality. Overall mortality was 4.5%. Major trauma (OR: 25.856; P = 0.002) and moderate-to-severe brain injury (OR: 7.495; P = 0.000) were independent risk factors of mortality. CONCLUSION: There has been no prior published data on interpersonal violence locally. This study is thus useful as preliminary data for future population-based studies. It also provides data for authorities to formulate preventive and intervention strategies.

Ethnic disparities in trauma mortality outcomes.

BACKGROUND: Ethnic disparities in trauma mortality outcomes have been demonstrated in the United States according to the US National Trauma Data Bank. The aim of this study was to determine the effect of race/ethnicity on trauma mortality in Singapore. METHODS: This was a retrospective review of patients aged 18-64 years with an injury severity score (ISS) ≥ 9 in the Trauma Registry of Tan Tock Seng Hospital, a 1,300-bed trauma center in Singapore, from 2006 to 2010. Chinese, Malay, and Indian patients were compared with patients of other ethnic groups. Multiple logistic regression analyses determined differences in survival rates after adjusting for demographics, anatomic and physiologic ISS and revised trauma score, mechanism or type of injury. RESULTS: A total of 4,186 patients (66.4 % of the database) met the inclusion criteria. Most patients were male (76.3 %) and young (mean age 40 years). Using Chinese as the reference group, we found no statistically significant differences in unadjusted or adjusted mortality rates among the ethnic groups. Independent predictors of mortality included age [odds ratio (OR) 1.05, 95 % confidence interval (CI) 1.03-1.06, p < 0.0001], presence of severe head injury (OR 1.75, 95 % CI 1.13-2.69, p = 0.012), and increasing ISS (p < 0.0001). CONCLUSIONS: Ethnicity is not an independent predictor of trauma mortality outcomes in the Singapore population. Our findings contrast with those from the United States, where race/ethnicity (Black and Hispanic) remains a strong independent risk factor for trauma mortality. This study attests to the success of the Singapore health care/trauma system in delivering the same quality of care regardless of ethnicity.

Comparison of severity and pattern of injuries between motorcycle riders and their pillions: a matched study.

INTRODUCTION: Motorcyclists and their pillion riders are the most vulnerable group of road users in Singapore, accounting for 50% of all road traffic accident fatalities in 2011. This study aims to compare the severity and pattern of injuries between matched pairs of riders and pillions. METHODS: Thirty-two matched pairs who presented to the A&E of an urban hospital from 1 August 2011 to 20 March 2012 were enrolled. Data were obtained from the hospital's trauma registry records, clinical records and accident victims were interviewed individually. Analysis was done using Stata 10 and considered rider-pillion pairs. RESULTS: Thirty-one pairs agreed to participate. There was no statistically significant difference in the ISS between riders and pillions (p=0.25). There was no significant difference in the probability of survival, Revised Trauma Score, distribution of injuries, total duration of admission and ICU stay between riders and pillions. When one party of the matched pair sustained a head, face, thoracic, abdominal/pelvic, extremity or external injury, the likelihood that the other party had an injury in the same region was 31%, 14%, 10%, 14%, 56% and 68% respectively. Cohen's kappa values were 0.28, 0.15, 0.05, 0.17, 0.24 and -0.16 for the respective regions. DISCUSSION: By comparing the severity and pattern of injuries between naturally matched pairs on the same motorcycle, one can account for potential confounding by the type and impact of collision, rider experience, amount of time to availability of medical aid, and other factors that may influence the outcome. Our study shows no statistically significant difference in the ISS and distribution of injuries between riders and pillions of matched pairs. Therefore, future health and insurance policies should provide equal coverage for both riders and pillions. Medical practitioners should approach riders and pillions similarly as there is no significant difference in their injury distribution. When one party of a matched pair presents with a head, extremity or external injury, care should be taken to look for an injury in the same region in the other party. CONCLUSION: Our study shows that there is no statistically significant difference in the ISS of riders and pillions. The pattern of injury is also similar. This study provides us useful information in the clinical management of motorcyclists and their pillions.

Emergency angio-embolisation in the operating theatre for trauma patients using the C-Arm digital subtraction angiography.

BACKGROUND AND AIMS: Angio-embolisation in trauma is a relatively new technique that is gaining popularity and recognition in identifying and arresting bleeding in trauma patients. We studied the possibility whether angio-embolisation using the Digital Subtraction Angiography (DSA), in the operating theatre (OT) could achieve successful haemostasis in trauma patients. We further studied the feasibility of using this technique as part of trauma resuscitation/damage control. METHODS: A retrospective study of trauma patients, with Injury Severity Score (ISS ≥ 9), admitted to Tan Tock Seng Hospital (TTSH) from January 2004 to December 2008 was done. Patients who had received angio-embolisation in the OT or angiography suite were evaluated in terms of age, gender, ISS, the site and type of angioembolisation used. The primary end point was to assess the success rate of angioembolisation using the C-Arm DSA in the OT, and whether there were any complications necessitating a repeat procedure or surgical intervention. The secondary end points of the study were aimed at studying the cost effectiveness of this technique, logistical feasibility and evaluating this technique as part of the initial trauma resuscitative efforts. RESULTS: A total of 43 trauma patients received angioembolisation. 32 patients had the angio-embolisation done using the C-Arm DSA in the OT (n = 32). None of the patients who received angioembolisation in the operating theatre (n = 32) had any re-bleeding. 15 out of 32 survived. There were no complications related to the angio-embolisation procedure. The majority of angio-embolisations done were for pelvic fractures. CONCLUSION: The success of angio-embolisation in the OT using the C-Arm DSA for a trauma patient and its complication rates are similar to that done in a dedicated angio-graphic suite. We conclude that angio-embolisation in the operating theatre using the C-Arm DSA is feasible, cost effective and can be a modality in the initial trauma resuscitation/damage control in any lead lined operating theatre. We believe that we are the first to describe this method of angio-embolisation using the C-Arm DSA in a conventional lead lined trauma operating theatre and its use as a feasible option in a trauma resuscitation/damage control algorithm.