The "weekend effect" does not impact on outcome of trauma laparotomy - Experience from a level 1 trauma centre in New Zealand.

PURPOSE: Trauma centres have been proven to provide better outcomes in developed countries for overall trauma, but there is limited literature on the systematic factors that describe any discrepancies in outcomes for trauma laparotomies in these centres. This study was conducted to examine and interrogate the effect of systematic factors on patients undergoing a trauma laparotomy in a developed country, intending to identify potential discrepancies in the outcome. METHODS: This was a retrospective study of all laparotomies performed for trauma at a level 1 trauma centre in New Zealand. All adult patients who had undergone an index laparotomy for trauma between February 2012 and November 2020 were identified and laparotomies for both blunt and penetrating trauma were included. Repeat laparotomies and trauma laparotomies in children were excluded. The primary clinical outcomes reviewed included morbidity, length of hospital stay, and mortality. All statistical analysis was performed using R v.4.0.3. RESULTS: During the 9-year study period, 204 trauma laparotomies were performed at Waikato hospital. The majority (83.3%) were performed during office hours (170/204), and the remaining 16.7% were performed after hours (34/204). And 61.3% were performed on a weekday (125/204), whilst 38.7% were performed on the weekend/public holiday (79/204). Most of the parameters in office hours and after hours groups had no statistically significant difference, except lactate (p = 0.026). Most of the variables in weekday and weekend groups had no statistically significant difference, except pH, lactate, length of stay, and gastrointestinal complications (p = 0.012, p < 0.001, p = 0.003, p = 0.020, respectively). CONCLUSION: The current trauma system at Waikato hospital is capable of delivering care for trauma laparotomy patients with the same outcome regardless of working hours or after hours, weekday or weekend. This confirms the importance of a robust trauma system capable of responding to the sudden demands placed on it.

Paediatric playground and tree-related injuries: Hospital admissions in the Midland region of New Zealand.

AIM: To examine the incidence and outcomes of paediatric playground and tree-related injuries in the Midland region of New Zealand. METHODS: A retrospective review of Midland Trauma Registry hospitalisation data between January 2012 and December 2018 was undertaken. Cases included children aged 0-14 years hospitalised for playground and tree-related injuries. Demographic and event information, injury severity and hospital-related outcomes were examined. RESULTS: Playground and tree-related hospitalisations (n = 1941) occurred with an age-standardised rate of 144.3/100 000 (confidence interval (CI) 127.3-161.3) and increased 1.4% (CI 1.3-4.2%) annually. The highest incidence was observed in 5-9-year olds (248.8/100 000) with 0-4 and 10-14-year olds at 86.0 and 89.2/100 000, respectively. Injuries most commonly occurred at home, school or pre-school (77.1%), 93.7% were due to falls and, the upper extremity was the most frequently injured body region (69.9%), particularly due to forearm (55.6%) and upper arm (34.7%) fractures. Tree-related incidents comprised 11.6% of all injuries and explained 57.1% of injuries classified as major severity. Fifty-eight percent of children were hospitalised for 1 day and 97.0% for less than 5 days. Estimated hospital costs were NZ$1.2 million annually with a median of NZ$3898 per incident. Injuries classified as minor severity accounted for 86.5% of the total estimated cost. CONCLUSION: Children aged 5-9 years' experience high rates of costly hospitalisation for playground and tree-related injuries. Targeted injury prevention initiatives, particularly in the home and school environments, are imperative to reduce the incidence and burden of playground and tree-related injuries to affected children, their families and hospital resources.

Characteristics of patients hospitalised with traumatic brain injuries.

AIM: To investigate the volume, injury characteristics and journey of Te Manawa Taki/Midland (TMT) residents hospitalised with a traumatic brain injury (TBI). METHODS: A retrospective review of TMT Trauma Registry data between 1 January 2012 and 31 December 2019 was conducted. Eligible patients (n=4,875) were TMT residents hospitalised with an injury to the brain parenchyma. RESULTS: An average 609 residents were hospitalised with a TBI diagnosis per year, increasing by an average of 7.0% annually. Males, Maori and 0-4- and 15-34-year-olds were proportionately over-represented. Transport incidents and falls were key mechanisms. Mild, moderate and severe TBI, derived by Abbreviated Injury Scale severity scores, were classified in 72.1%, 22.6% and 5.3% of patients, respectively. Concomitant injuries occurred in 78.1% of patients. Brain surgery was required by 3.5%, other surgery by 25.5% and intensive care by 14.9%, and 3.7% died. Mean length of hospitalisation was 5.8±9.3 days. There were 1,118 inter-facility transfers: 41.9% to designated out-of-region acute care and rehabilitation centres, an annual average of 59 TMT-domiciled patients. CONCLUSION: The increasing volume of diverse TBI hospitalisations represents a major burden on individuals, communities and health services. Effective strategies are needed to prevent injury and ensure treatment and rehabilitation are equitable and patient focused.

Contemporary management of isolated free fluid on computed tomography scan in blunt abdominal trauma-experience from a Level 1 trauma centre in New Zealand.

AIMS: The management of patients with blunt abdominal trauma (BAT) who have isolated free fluid (IFF) with no solid organ injury (SOI) on computed tomography (CT) remains controversial. This study aims to determine if the volume of free fluid (FF) is a predictor of the need for operative management of traumatic intra-abdominal injuries, by reviewing the local cumulative experience with IFF at a major trauma centre in New Zealand. METHODS: A retrospective study was undertaken over nine years at a Level 1 trauma centre in New Zealand. Patients aged over 15 years who sustained BAT and had IFF with no SOI demonstrated on CT were included. All CT scans and patient notes were reviewed. The volume of free fluid was classified by the local interpreting radiologist on the CT report. RESULTS: Eighty-two out of 1,177 BAT patients (7%) had IFF with no SOI on CT. Thirty-eight percent were males, with a median age of 31 years. Nineteen (23%) underwent immediate operative management (OM) at the time of presentation. The remaining 63 patients had a trial of non-operative management (NOM), 10 (16%) of which were unsuccessful and required an operation. Overall, 29 patients (35%) required operative management. Eighty-nine percent of the OM group and 90% who failed NOM had positive operative findings, giving an overall true positive of 32%. CONCLUSIONS: The presence of IFF in itself is not an absolute indication for operative exploration and many patients with trace IFF can be managed non-operatively. Small amounts of IFF should be regarded with suspicion, and moderate or large amounts of fluid are likely to require operative exploration. Further work must make use of clinical scoring systems and laparoscopy or laparotomy to assess patients at high risk of surgically remediable intra-abdominal injury post BAT.

Admission to hospital for injury during COVID-19 alert level restrictions.

AIM: To assess the effects of the community lockdown phases on trauma-related admissions to Midland region hospitals over the period 15 February to 10 July 2020, and to compare volume variation with the same period in the previous three years. METHODS: A retrospective, descriptive study of prospectively collected data from the Midland Trauma Registry in New Zealand. RESULTS: There was a 36.7% (p<.00001) reduction in injury admissions during Alert Level 4 ('Lockdown') compared with the same period in 2017, 2018 and 2019. This was in the context of volume increases during the pre-lockdown period (17.8%, p<.00001) and a 'rebound' as restrictions eased. There was an increase in injuries occurring at home (28.3%, p<.00001) and on footpaths (37.9%, p=0.00076), while there was a decline in events on roads (33.0%, p=0.017), at schools (75.0%, p<.00001) and in sports areas (79.7%, p<.00001). Falls remained the dominant mechanism of injury in 2020, contributing 39.9% of all hospitalisations. CONCLUSIONS: The reduction in hospital admissions during alert levels 4 and 3 was short lived, with a rebound evident when restrictions eased. Hospital resources have been strained because this rebound coincided with a planned 'catch up' on healthcare that was delayed during the higher community restriction levels.

Variation in volumes and characteristics of trauma patients admitted to a level one trauma centre during national level 4 lockdown for COVID-19 in New Zealand.

AIM: The aims of this study were to describe the variation in volumes and types of injuries admitted to a level one trauma centre in New Zealand over two 14-day periods before and during the national level 4 lockdown for COVID-19; and highlight communities at risk of preventable injury that may impact negatively on hospital resources. METHOD: A retrospective, descriptive study of prospectively collected data in the Midland Trauma Registry in New Zealand. RESULTS: Overall there was a reduction of 43% in all injury-related admissions with significant reductions seen in major injury (50% reduction), males (50% reduction) and children aged 0-14 years (48% reduction). Results for ethnicity and persons aged over 14 years were within 3% deviation of this overall 43% reduction. Injuries at home, particularly falls, predominate. CONCLUSION: Despite the significant reduction in admissions during level 4 lockdown, hospitals should continue to provide full services until resource limitations are unavoidable. Immediate messaging is recommended to reduce rates of injury on the farm and at home, specifically falls prevention. Ongoing attention of road users to road safety is essential to reduce the incidence of preventable major injury. These immediate measures can potentially reduce unnecessary pressure on hospital beds and resources during the pandemic.

A six-year review of patients admitted to hospital with injuries related to quad bike use.

AIM: To describe quad bike injury-related hospitalisations in the Midland region over a six-year period. METHOD: A retrospective review of anonymised, prospectively-collected trauma registry data from 1 July 2012 to 30 June 2018 was undertaken. Cases include patients hospitalised with quad bike-related injuries. Non-major injuries are included to provide a clearer picture of the trauma burden. RESULTS: Three hundred and forty-six injuries resulted in hospitalisation with 70.2% of events occurring on a farm. Males outnumbered females 3.7:1. Forty-six children (<16 years) were hospitalised, of which 23 were injured on-farm and seven on a road. Over six years there was an annual average increase of 7.3% for all events occurring on a farm, 2.6% for injuries occurring during a farming activity and 4.7% for off-farm recreational injuries. CONCLUSION: Despite continued public debate and education on the safe use of quad bikes, injuries severe enough to require hospitalisation continue to occur. Children continue to be injured, both as riders and passengers. Ageing farmers are a developing area for concern. While workplace safety garners most of the safety attention, two other areas also deserve injury prevention consideration; injuries that occur on-farm but not during farming activities and those occurring off-farm to recreational riders.

Cycling-related injuries and cycling promotion: a trauma service perspective.

AIM: Current policy direction seeks to promote participation in both recreational and active transport cycling. We evaluate cycling-related injuries resulting in hospital admission across the Midland Region of New Zealand to establish injury trends. METHOD: A retrospective review of anonymised prospectively-collected trauma registry data from 1 June 2012 to 31 July 2016 in the Midland Region. Cases include patients hospitalised with cycling-related injuries. RESULTS: Nine hundred and ninety-eight cyclists were admitted to hospital (2012-2016). Admission volumes increased approximately 16.8% per year, major trauma by 11.9% and non-major trauma by 17.8%. Overall, 66.7% of admissions were for people aged over 20 years and 73.4% were for males. The participation-adjusted annual injury rate was 78.4 per 100,000. This masked considerable variation by gender, age group and injury severity. CONCLUSION: Hospital admission volumes and rates are rising with underlying variation in patient demography, place and severity of injury. Current policy direction to grow cycling participation based on the health, environmental and economic benefits is ahead of the implementation of safer cycling infrastructure, creating a timing lag. From a regional hospital-based trauma service perspective, this timing lag needs due consideration if the full benefits of increasing participation are to be realised.

The impact of patient and practice characteristics on retention in the diabetes annual review programme.

INTRODUCTION: Despite more than 10 years of the diabetes annual review (DAR) programme, ensuring the annual return of diabetic patients for review remains a challenge for primary care. Regardless of future arrangements for diabetes review programmes, regular review of patients remains clinically important. AIM: To investigate the effect of patient and practice characteristics on the retention of patients continuously enrolled with the same practice in the DAR programme. METHODS: We undertook a retrospective, observational study of a cohort of enrolled diabetic patients who had a DAR in the July 2006 - June 2007 reporting year and remained enrolled with the same practice for the following three years. Controlling for death and migration, retention rates were calculated for age, gender, ethnicity, rurality, practice funding type and practice nurse (PN) to general practitioner (GP) ratio. RESULTS: The study included data from 78 practices and 6610 patients with Type 2 diabetes. Non-Maori and those aged 60 years and over were more likely to be retained in the programme. For practice factors, those with a higher PN to GP ratio had a significant retention advantage. Rurality and funding type was not shown to have a significant role in retention. DISCUSSION: Results support the view that both patient and practice factors influence a patient's retention within the DAR programme. The PN to GP ratio may be an important factor in the retention of patients in a DAR programme and warrants further research and consideration when planning future primary care models.