Mortality rates in Norwegian HEMS-a retrospective analysis from Central Norway.

BACKGROUND: Helicopter Emergency Medical Services (HEMS) provide rapid and specialized care to critically ill or injured patients. Norwegian HEMS in Central Norway serves an important role in pre-hospital emergency medical care. To grade the severity of patients, HEMS uses the National Advisory Committee for Aeronautics' (NACA) severity score. The objective of this study was to describe the short- and long term mortality overall and in each NACA-group for patients transported by HEMS Trondheim using linkage of HEMS and hospital data. METHODS: The study used a retrospective cohort design, aligning with the STROBE recommendations. Patient data from Trondheim HEMS between 01.01.2017 and 31.12.2019 was linked to mortality data from a hospital database and analyzed. Kaplan Meier plots and cumulative mortality rates were calculated for each NACA group at day one, day 30, and one year and three years after the incident. RESULTS: Trondheim HEMS responded to 2224 alarms in the included time period, with 1431 patients meeting inclusion criteria for the study. Overall mortality rates at respective time points were 10.1% at day one, 13.4% at 30 days, 18.5% at one year, and 22.3% at three years. The one-year cumulative mortality rates for each NACA group were as follows: 0% for NACA 1 and 2, 2.9% for NACA 3, 10.1% for NACA 4, 24.7% for NACA 5 and 49.5% for NACA 6. Statistical analysis with a global log-rank test indicated a significant difference in survival outcomes among the groups (p < 2⋅10- 16). CONCLUSION: Among patients transported by Trondheim HEMS, we observed an incremental rise in mortality rates with increasing NACA scores. The study further suggests that a one-year follow-up may be sufficient for future investigations into HEMS outcomes.

Using machine learning to assess the extent of busy ambulances and its impact on ambulance response times: A retrospective observational study.

BACKGROUND: Ambulance response times are considered important. Busy ambulances are common, but little is known about their effect on response times. OBJECTIVE: To assess the extent of busy ambulances in Central Norway and their impact on ambulance response times. DESIGN: This was a retrospective observational study. We used machine learning on data from nearby incidents to assess the probability of up to five different ambulances being candidates to respond to a medical emergency incident. For each incident, the probability of a busy ambulance was estimated by summing the probabilities of candidate ambulances being busy at the time of the incident. The difference in response time that may be attributable to busy ambulances was estimated by comparing groups of nearby incidents with different estimated busy probabilities. SETTING: Medical emergency incidents with ambulance response in Central Norway from 2013 to 2022. MAIN OUTCOME MEASURES: Prevalence of busy ambulances and differences in response times associated with busy ambulances. RESULTS: The estimated probability of busy ambulances for all 216,787 acute incidents with ambulance response was 26.7% (95% confidence interval (CI) 26.6 to 26.9). Comparing nearby incidents, each 10-percentage point increase in the probability of a busy ambulance was associated with a delay of 0.60 minutes (95% CI 0.58 to 0.62). For incidents in rural and urban areas, the probability of a busy ambulance was 21.6% (95% CI 21.5 to 21.8) and 35.0% (95% CI 34.8 to 35.2), respectively. The delay associated with a 10-percentage point increase in busy probability was 0.81 minutes (95% CI 0.78 to 0.84) and 0.30 minutes (95% CI 0.28 to 0.32), respectively. CONCLUSION: Ambulances were often busy, which was associated with delayed ambulance response times. In rural areas, the probability of busy ambulances was lower, although the potentially longer delays when ambulances were busy made these areas more vulnerable.

Posttraumatic Stress Responses and Psychological Well-being in Norwegian Medical Helicopter Personnel.

OBJECTIVE: Emergency medical personnel are exposed to multiple stressors, including those of psychological etiologies. The aim of this study was to report the prevalence of anxiety, depression, and posttraumatic stress symptoms in Norwegian medical helicopter personnel and to determine to what degree they report personal growth or deprecation due to exposure to work-related events. METHODS: This was a web-based, cross-sectional survey performed among rescue paramedics and physicians staffing helicopter emergency medical services and search and rescue helicopters between May 5, 2021, and July 5, 2021. Questions included demographic data, the traumatic events exposure index, the Generalized Anxiety Disorder 7 scale, the Patient Health Questionnaire 9 (Depression), the posttraumatic change scale, and the posttraumatic symptom scale. RESULTS: Of the 245 eligible participants, 10 declined to take part and 74 failed to answer, producing a response rate of 66% (72 rescue paramedics and 89 physicians). Of the study population, 3.9 % reported manifest posttraumatic stress disorder symptoms, and 1.9% described moderate to severe depression and anxiety. The majority (76%) described posttraumatic emotional growth because of their work experience. CONCLUSION: Despite exposure to several traumatic stressors, participants reported a lower prevalence of posttraumatic stress symptoms, depression, and anxiety compared with a Norwegian adult population.

Observational study on chest pain during the Covid-19 pandemic: changes and characteristics of visits to a Norwegian emergency department during the lockdown.

BACKGROUND: Following the spread of the Covid-19 pandemic in 2020, reports emerged on decreasing emergency department (ED) visits in many countries. Patients experiencing chest pain was no exception. The aim of the current study was to describe how the Covid-19 pandemic and the subsequential lockdown impacted the chest pain population in a Norwegian ED. METHODS: All patients presenting to the ED with chest pain during the study period were included. Data were collected retrospectively from the time period January 6th to August 30th, 2020, and compared to the corresponding period in 2019, assessing variations in the number of ED visits, severity, gender, and age. RESULTS: Fewer patients with chest pain were seen in the ED following the national lockdown in Norway, compared to the corresponding 2019 period (week 13: 38% fewer; weeks 11-27: 16% fewer). By week 28, the rate normalized compared to 2019 levels. There was a relative increase in lower acuity patients among these patients, while fewer moderate acuity patients were seen. During the initial period following lockdown, the median age was lower compared to the corresponding 2019 period (58 years (IQR 25) vs 62 years (IQR 24), respectively). Admissions due to acute coronary syndromes (ACS) remained proportionally stable. CONCLUSIONS: Succeeding the Covid-19 outbreak and the subsequent national lockdown in Norway, fewer chest pain patients presented to the ED. Paradoxically, the patients seemed to be less severely ill and were on average younger compared to 2019 data. However, the proportion of patients admitted with ACS was stable during this period. This could imply that some patients may have failed to seek medical advice despite experiencing a myocardial infarction.

Low-voltage electric shock - proposed new recommendations. / Strømgjennomgang fra lavspenning ­ forslag til nye anbefalinger.

We propose new recommendations for the emergency treatment of low-voltage electric injuries (<1 000 volts). A large proportion of these patients can be treated as outpatients.

Patients with low-voltage electric shock referred to an Emergency Department. / Pasienter med strømgjennomgang fra lavspenning henvist til et akuttmottak.

BACKGROUND: Patients exposed to electricity are often referred to the Emergency Department, but guidelines differ as to how they should be managed. In this article, we describe patients with low-voltage electric shock in the Emergency Department at St Olav's Hospital, Trondheim University Hospital. MATERIAL AND METHOD: Retrospective data from patients referred to the Emergency Department following low-voltage electric shock (< 1,000 V) in the period 1.1.2012-31.12.2017 (N = 210) were included. RESULTS: The median age was 26 years and 186/210 (89 %) were men. Out of the 210 patients, 165 (79 %) had symptoms following electric shock. Localised pain and chest discomfort occurred in 84/165 (51 %) and 57/165 (35 %) of patients respectively. ECG findings were normal in 168/209 (80 %), and no patients had arrhythmias requiring treatment or elevated troponin T or creatine kinase. No patients had serious complications or died. INTERPRETATION: Low-voltage electric shock did not cause serious arrhythmias or elevated levels of troponin T or creatine kinase. It should be possible to manage asymptomatic patients with normal findings on clinical examination and ECG in a prehospital setting without reducing patient safety.

A cross-sectional study of mental health-, posttraumatic stress symptoms and post exposure changes in Norwegian ambulance personnel.

BACKGROUND: Posttraumatic stress disorder (PTSD) has been shown to be elevated among first responders (Emergency Medical Services, fire service, police force) compared to the general population. Examining the prevalence of mental health issues in a work force with an elevated occupational risk is fundamental towards ensuring their wellbeing and implementing safeguard measures. The goal of this study is therefore to report the prevalence of depression, anxiety, posttraumatic development, and PTSD in Norwegian ambulance personnel. METHODS: This study is a cross-sectional, anonymous, web-based survey (Questback®), performed among operative personnel employed in the Emergency Medical Services in the Regional Health Trust of Central Norway between 18. February and 9. April 2021. The study was sent to 1052 eligible participants. Questions reported demographic data, a traumatic events exposure index, Patient Health Questionnaire-9 (Depression), Generalized Anxiety Disorder-7 scale, Posttraumatic symptom scale (PTSD) and Posttraumatic change scale. RESULTS: The response rate in this study was 45.5% (n = 479/1052). The mean age of respondents was 37.1 years (std. 11.1) and 52.8% (n = 253) were male. Of the respondents, 80.6% (n = 386) were married or had a partner, and 91.6% (n = 439) reported having access to a peer support programme, with 34.9% (n = 167) reporting that they had utilized peer support. In this study, 5% (n = 24) showed a prevalence of manifest posttraumatic stress disorder symptoms, while 8.6% (n = 41) reported moderate to severe depression and 2.9% (n = 14) presented moderate to severe symptoms of general anxiety. Of the respondents, 77.2% (n = 370) reported personal growth because of their work experiences. CONCLUSIONS: This study indicates that Norwegian ambulance personnel report a prevalence of posttraumatic stress symptoms and depression, which is slightly higher for men, and lower for the female proportion in this study, when compared to an adult Norwegian population. The vast majority of respondents reported personal growth because of their work experience, and both the degree of peer support and having a partner seem to influence levels of posttraumatic stress and -development.

Patient visits to an emergency department in anticipation of the COVID-19 pandemic. / Pasienttilstrømming i et akuttmottak i påvente av covid-19-pandemien.

BACKGROUND: The Emergency Department in Trondheim has prepared for a large influx of patients infected with the SARS-CoV-2 virus. We conducted a study comparing patients in the Emergency Department in the first weeks of the pandemic in Norway (weeks 11 and 12) with the average number of patient visits. MATERIAL AND METHOD: Data from patients at the Emergency Department of St Olav's Hospital in the period 6 January 2020-22 March 2020 were retrieved from the Emergency Department's database. Logistical patient data concerning patient numbers, chief complaints, length of stay in the Emergency Department, acuity level, isolation status, and treatment level were analysed. RESULTS: In week 12, 331 patients were referred to the Emergency Department, a reduction of 39 % compared with the average of 541 patients in weeks 2-10. There was a general reduction in all patient groups, but particularly those discharged from the Emergency Department. In week 12 there were 56 more patients isolated with suspected/potentially infectious disease (187 %) compared with the average for weeks 2-10, and these patients spent almost two hours longer in the Emergency Department than other patients. INTERPRETATION: There was a reduction in patient visits to the Emergency Department in the first weeks of the pandemic. The percentage of patients isolated for infection control increased, and the time spent in the Emergency Department for these patients was greater than for other patients. The reduction in the inflow of patients is expected to be temporary, and the Emergency Department at St Olav's Hospital expects a large influx of patients with suspected COVID-19 disease.