Management and outcomes of pediatric patients transported by emergency medical services in a Canadian prehospital system

Association of midazolam route of administration and need for recurrent dosing among children with seizures cared for by emergency medical services

OBJECTIVE

National guidelines in the United States recommend the intramuscular and intranasal routes for midazolam for the management of seizures in the prehospital setting. We evaluated the association of route of midazolam administration with the use of additional benzodiazepine doses for children with seizures cared for by emergency medical services (EMS).

METHODS

We conducted a retrospective cohort study from a US multiagency EMS dataset for the years 2018-2022, including children transported to the hospital with a clinician impression of seizures, convulsions, or status epilepticus, and who received an initial correct weight-based dose of midazolam (.2 mg/kg intramuscular, .1 mg/kg intravenous, .2 mg/kg intranasal). We evaluated the association of route of initial midazolam administration with provision of additional benzodiazepine dose in logistic regression models adjusted for age, vital signs, pulse oximetry, level of consciousness, and time spent with the patient.

RESULTS

We included 2923 encounters with patients who received an appropriate weight-based dose of midazolam for seizures (46.3% intramuscular, 21.8% intranasal, 31.9% intravenous). The median time to the first dose of midazolam from EMS arrival was similar between children who received intramuscular (7.3 min, interquartile range [IQR] = 4.6-12.5) and intranasal midazolam (7.8 min, IQR = 4.5-13.4) and longer for intravenous midazolam (13.1 min, IQR = 8.2-19.4). At least one additional dose of midazolam was given to 21.4%. In multivariable models, intranasal midazolam was associated with higher odds (odds ratio [OR] = 1.39, 95% confidence interval [CI] = 1.10-1.76) and intravenous midazolam was associated with similar odds (OR = 1.00, 95% CI = .80-1.26) of requiring additional doses of benzodiazepines relative to intramuscular midazolam.

SIGNIFICANCE

Intranasal midazolam was associated with greater odds of repeated benzodiazepine dosing relative to initial intramuscular administration, but confounding factors could have affected this finding. Further study of the dosing and/or the prioritization of the intranasal route for pediatric seizures by EMS clinicians is warranted.

Establishing outcome-driven vital signs ranges for children in the prehospital setting

BACKGROUND

Vital signs are frequently used in pediatric prehospital assessments and guide protocol utilization. Common pediatric vital sign classification criteria identify >80% of children in the prehospital setting as having abnormal vital signs, though few receive lifesaving interventions (LSIs). We sought to identify data-driven thresholds for abnormal vital signs by evaluating their association with prehospital LSIs.

METHODS

We evaluated prehospital care records for children (<18 years) transported to the hospital during 2022 from a large, national repository of emergency medical services (EMS) patient encounters. Predictors of interest were heart rate (HR), respiratory rate (RR), systolic blood pressure (SBP), and pulse oximetry. HR, RR, and SBP were converted to Z-scores using age-based distributional models. Our outcome was potential LSIs, defined as performance of selected respiratory procedures, resuscitative interventions, or medication administrations. Using cut point analysis, we identified higher specificity (maximal specificity with a minimum of 25% sensitivity) and higher sensitivity (maximal sensitivity with a minimum of 25% specificity) ranges for each vital sign and evaluated measures of diagnostic accuracy.

RESULTS

We included 987,515 children (median age 10 years, IQR 2-15 years). An LSI occurred in 4.3% (2.1% with respiratory procedures, 1.2% with resuscitative interventions, and 2.0% with medication administration). HR, RR, and SBP demonstrated a U-shaped association with LSIs. Specificities ranged from 84.1% to 93.7% for higher specificity criteria, with RR demonstrating the best performance (sensitivity 84.6%, specificity 27.0%). Sensitivities ranged from 62.3% to 84.4% for higher sensitivity criteria.

CONCLUSIONS

Cut points for pediatric vital signs were associated with LSIs. Specific age-adjusted ranges can identify children at higher and lower risk for receipt of LSI. These ranges may be combined with other objective measures to improve the assessment of children in the prehospital setting, assist in optimizing protocol utilization, improve transport decision making, and guide destination selection.

Clinical Research in Prehospital Care: Current and Future Challenges

Prehospital care plays a critical role in improving patient outcomes, particularly in cases of time-sensitive emergencies such as trauma, cardiac failure, stroke, bleeding, breathing difficulties, systemic infections, etc. In recent years, there has been a growing interest in clinical research in prehospital care, and several challenges and opportunities have emerged. There is an urgent need to adapt clinical research methodology to a context of prehospital care. At the same time, there are many barriers in prehospital research due to the complex context, posing unique challenges for research, development, and evaluation. Among these, this review allows the highlighting of limited resources and infrastructure, ethical and regulatory considerations, time constraints, privacy, safety concerns, data collection and analysis, selection of a homogeneous study group, etc. The analysis of the literature also highlights solutions such as strong collaboration between emergency medical services (EMS) and hospital care, use of (mobile) health technologies and artificial intelligence, use of standardized protocols and guidelines, etc. Overall, the purpose of this narrative review is to examine the current state of clinical research in prehospital care and identify gaps in knowledge, including the challenges and opportunities for future research.

Prehospital Seizure Management in Children: An Evaluation of a Nationally Representative Sample

OBJECTIVE

To describe the characteristics and emergency medical services (EMS) interventions, appropriateness of medication dosing, and factors associated with use of any or multiple doses of benzodiazepines for children with seizures in the prehospital setting from a nationally representative dataset.

METHODS

We performed a retrospective study of EMS encounters within the National Emergency Medical Services Information System between 2019-2021, including children (<18 years) with an impression of seizures. We identified (1) factors associated with the use of benzodiazepines in a logistic regression model and (2) factors associated with multiple doses of benzodiazepines in an ordinal regression model.

RESULTS

We included 361,177 encounters for seizure. Among transports with an Advanced Life Support clinician, 89.9% were given no benzodiazepines, and 7.7%, 1.9%, and 0.4% were given 1, 2 and ≥3 doses of benzodiazepines, respectively. Encounters given more doses of benzodiazepines had increased use of supplemental oxygen. A high proportion (43.4%) of EMS-provided initial benzodiazepine doses were inappropriately low. EMS-provided benzodiazepine use was associated with use of benzodiazepine prior to EMS arrival. Provision of multiple doses of EMS-provided benzodiazepines was associated with use of a low initial dose of benzodiazepine and use of lorazepam or diazepam compared with midazolam.

CONCLUSION

A large proportion of prehospital pediatric patients with seizure are given inappropriately low dose of benzodiazepines. Use of a low dose of benzodiazepine and use of benzodiazepines other than midazolam are associated with additional benzodiazepine usage. Our findings have implications for future research and quality improvement needs in pediatric prehospital seizure management.

Outcomes of Pediatric Patients in Secondary Transport to Tertiary Hospital: A Retrospective Observational Study

OBJECTIVES

Emergency medical service (EMS) providers play an important role in determining which hospital to choose. To date, there is no evidence-based guideline to support their decisions, except for major trauma cases. Secondary transport is considered when a patient needs further investigation or treatment after primary transport, but this can delay treatment and put patients at unnecessary risk. The objective of this study was to investigate the outcomes of pediatric secondary transport patients to tertiary hospitals.

METHODS

This was a citywide population-based observational study conducted in Kobe, Japan. We reviewed the EMS registry to identify secondary transport patients younger than 19 years and investigated their clinical characteristics. We excluded cases of unknown hospital destinations, nontransported cases, and major trauma patients who followed a different protocol for a hospital destination. The primary endpoint was the hospital outcome 12 hours after transport. Because there was no link between the EMS patient transport data and the hospital medical records, a probabilistic linkage was performed to obtain the hospital outcomes. Patients who required secondary transport were compared with patients transported directly to tertiary hospitals.

RESULTS

A total of 13,720 pediatric patients were transported from the field by Kobe EMS between January 2013 and December 2015. Among them, 81 pediatric patients (0.6%) required secondary transport to tertiary hospitals within 24 hours of the primary transport, whereas a total of 3673 patients (27%) were transported directly to tertiary hospitals. Despite no apparent difference in prehospital severity, secondary transport patients were associated with higher hospitalization rates and a need for critical care compared with those who had direct transport. Seizure was the most common reason for the use of secondary transport, and 89% of the seizure patients were hospitalized after undergoing secondary transport; minor trauma was the second most common reason for the use of secondary transport, and 53% of the patients were hospitalized.

CONCLUSIONS

In this study, the characteristics of the secondary transport patients and hospital outcomes revealed a heterogeneity in pediatric prehospital transport. It is recommended that the development of pediatric EMS destination guidelines cover children's diverse conditions. Further studies are required, and linkages between prehospital and hospital data will help promote a better understanding of appropriate hospital destinations.

Prehospital noninvasive positive pressure ventilation for severe respiratory distress in adult patients: An updated meta-analysis

AIM

To compare the effect of prehospital noninvasive positive pressure ventilation (NIPPV) and standard care for severe respiratory distress.

BACKGROUND

Severe respiratory distress is an important cause of death in adult patients. There is a growing body of research exploring the benefits of nasal intermittent positive pressure ventilation (NIPPV) for patients undergoing severe respiratory distress. However, a systematic review is needed to synthesise and summarise this body of knowledge to identify the effectiveness of NIPPV. This is an update of a meta-analysis first published in 2014.

DESIGN

Meta-analysis based on PRISMA guidelines.

METHODS

Databases including PubMed, Embase, Scopus and the Cochrane Library databases were electronically searched to identify randomised controlled trials (RCTs) that reported NIPPV therapy for adult patients with severe respiratory distress. The retrieval time is limited from inception to August 2021. Two reviewers independently screened literature, extracted data and assessed risk bias of included studies. Meta-analysis was performed by using STATA 11.0 software.

RESULTS

A total of 10 studies involving 1465 patients were included. The meta-analysis results showed that compared with standard care, CPAP therapy decreased intubation rate (RR = 0.43, 95% CI: 0.27-0.67, p < .001, I²  = 0.0%), reduced hospital stay (WMD = -4.19, 95% CI: -5.62, -2.77) and ICU stay (WMD = -0.65, 95% CI: -1.09, -0.20) for patients with severe respiratory distress. However, no significant effects of NIPPV were observed on in-hospital mortality (RR = 0.83, 95% CI: 0.64-1.07) and ICU admission rate (RR = 0.93, 95% CI: 0.73-1.19).

CONCLUSIONS

Adult patients with NIPPV treatment for severe respiratory distress had a significantly lower intubation rate and shorter hospital and ICU stay, compared with those with standard care. However, no effect of NIPPV on in-hospital mortality was observed. Further study is needed by enrolling large-sample original studies.

RELEVANCE TO CLINICAL PRACTICE

Among patients with severe respiratory distress, prehospital NIPPV, compared with standard care, was associated with lower intubation rate and shorter hospital and ICU stay in our study. Although our meta-analysis did not find a relationship between prehospital NIPPV and in-hospital mortality and ICU admission rate, which may be limited by the number of studies included and the small sample size. However, our study still suggested that the use of prehospital NIPPV was beneficial to the condition of patients with severe respiratory distress.

Prehospital benzodiazepine use and need for respiratory support in paediatric seizures

BACKGROUND

Paramedics are frequently called to attend seizures in children. High-quality evidence on second-line treatment of benzodiazepine (BZD)-refractory convulsions with parenteral long-acting antiepileptic drugs in children has become available from the ED. In order to address the potential need for an alternative agent, we set out to determine the association of BZD use prehospital and the need for respiratory support.

METHODS

We conducted a retrospective observational study of state-wide ambulance service data (Ambulance Victoria in Victoria, Australia, population: 6.5 million). Children aged 0-17 years assessed for seizures by paramedics were analysed for demographics, process factors, treatment and airway management. We calculated adjusted ORs (AOR) of the requirement for respiratory support in relation to the number of BZD doses administered.

RESULTS

Paramedics attended 5112 children with suspected seizures over 1 year (1 July 2018 to 30 June 2019). Overall, need for respiratory support was low (n=166; 3.2%). Before ambulance arrival, 509 (10.0%) had already received a BZD and 420 (8.2%) were treated with midazolam by paramedics. Of the 846 (16.5%) patients treated with BZD, 597 (70.6%) received 1 BZD dose, 156 (18.4%) 2 doses and 93 (11.0%) >2 doses of BZD. Patients who were administered 1, 2 and >2 doses of BZD received respiratory support in 8.9%, 32.1% (AOR 4.6 vs 1 dose, 95% CI 2.9 to 7.4) and 49.5% (AOR 10.3 vs 1 dose, 95% CI 6.0 to 17.9), respectively.

CONCLUSIONS

Increasing administration of BZD doses was associated with higher use of respiratory support. Alternative prehospital antiepileptic drugs to minimise respiratory depression should be investigated in future research.

Variation in Prehospital Protocols for Pediatric Seizure Within the United States

OBJECTIVE

The objective of this study was to compare statewide prehospital protocols for the management of pediatric seizures.

METHODS

We performed a descriptive analysis comparing statewide protocols for emergency medical services management of pediatric seizures within the United States, excluding states for which no statewide protocol/model was available. We compared antiepileptic drugs (AEDs), routes and doses of administration, and differences in febrile seizure management.

RESULTS

Of 50 states, 34 had either statewide protocols or models and were included. All had a protocol for the management of seizures and provided specific recommendations for the management of pediatric seizures. Twelve states (35%) preferentially recommended midazolam over other benzodiazepines. Thirty-two (94%) of 34 allowed for use of midazolam, with variable use of other AEDs. All allowed for use of intramuscular AED. Twenty-six (77%) allowed for intranasal AED. Nine (27%) allowed emergency medical services to administer a patient's own abortive AED, and 6 (18%) allowed for use of a patient's vagal nerve stimulator, when present. There was a wide variability with respect to dosing ranges for medications. Thirty-two (94%) of 34 included blood glucose measurement within the protocol. Twenty-one protocols (62%) provided recommendations for febrile seizures, including recommending active/passive cooling (8/34, 24%) and antipyretic administration (9/34, 26%).

CONCLUSIONS

All statewide protocols carried specific guidelines for the prehospital management of pediatric seizures; however, there was wide variability with respect to specific AEDs, routes of administration, and drug dosages. In addition to broader availability of statewide guidance, areas of potential protocol improvement and research include AED dose optimization, reprioritization of blood glucose, and greater emphasis on intranasal or intramuscular medication dosing.

Out-of-Hospital Seizures in Children: A Population-Based Study

OBJECTIVES

Seizures seem to represent a frequent cause for pediatric emergency medical (EM) and emergency room (ER) contacts, but few population-based data are available. Our aim was to study the incidence, prehospital and ER treatment, and outcomes of pediatric seizures necessitating out-of-hospital care.

METHODS

We studied the out-of-hospital evaluation procedures, ER treatment, diagnostics and 2-year prognosis of all cases of pediatric (0-16 years) seizures encountered by the emergency medical services (EMS) in Helsinki, Finland, in 2012 (population 603,968, pediatric population 92,742); 251 patients were encountered by the EMS, of which 220 seen at the ER.

RESULTS

The yearly incidence of pediatric seizures necessitating EMS activation was 2.8/1000 in the pediatric population. Febrile seizures were responsible for 97 (44.1%) of the cases transported to the ER. Only a minority of patients required advanced life support measures out-of-hospital or complex diagnostics in the ER. Still, of the 220 patients seen at ER, 68 (30.9%) were hospitalized, and 106 (48.2%) had follow-up contacts scheduled.

CONCLUSIONS

Pediatric seizures were a common cause for EM and ER contacts. Advanced life support measures were seldom needed, and the prognosis was good, but seizures still required considerable resources. They often resulted in urgent EM dispatch and transport, hospitalization, follow-up visits, new medication, and complementary studies. This emphasizes the role the EMS plays in recognizing and terminating pediatric seizures and in referring these children to appropriate care.

National Characteristics of Non-Transported Children by Emergency Medical Services in the United States

Study Objective: Most 911 calls result in ambulance transport to an emergency department. In some cases, transport is refused or deemed unnecessary. The frequency of pediatric non-transport is unknown. Our primary objective was to describe the proportion of pediatric EMS activations resulting in non-transport. Our secondary objective was to identify patient, community, and EMS agency factors associated with pediatric non-transport.Methods: We conducted a cross-sectional study using 2019 data from the National EMS Information System registry. We compared non-transport rates for children (<18 y/o), adults (18 - 60 y/o) and elderly (>60 y/o) patients. We then used generalized estimating equations to identify factors associated with pediatric non-transport while accounting for geographical clustering.Results: There were 21,931,490 EMS activations, including 1,403,454 pediatric 911 responses. 30% of pediatric 911 responses resulted in non-transport. Non-transport was less likely for adults (19%, OR 0.54 [0.54, 0.55]) and elderly patients (13%, OR 0.35 [0.35, 0.36]). The most common pediatric non-transport dispositions were: refused evaluation/care, and treated/released. Non-transport was associated with: pulmonary (aOR 3.84 [3.30, 4.48]) and musculoskeletal chief complaints (aOR 3.75 [3.22, 4.36]). Non-transport was more likely for: rural EMS calls (aOR 1.28 [1.24, 1.32]); calls classified by EMS as Lower Acuity (aOR 7.88 [5.98, 10.38]); and Tribal EMS agencies (aOR 3.49 [3.09, 3.94]).Conclusion: Almost one-third of pediatric 911 activations result in non-transport. Although very few children have been included in pilots of alternate transport processes to date, non-transport is actually more common in children than adults. More work is needed to understand better the patient safety and economic implications of this practice.

Characteristics, management and outcome of prehospital pediatric emergencies by a Dutch HEMS

Background

In prehospital care, the Helicopter Emergency Medical Service (HEMS) can be dispatched for critically injured or ill children. However, little detail is known about dispatches for children, in terms of the incidence of prehospital interventions and overall mortality. The primary objective of this study is to provide an overview of pediatric patient characteristics and incidence of interventions.

Methods

A retrospective chart review of all patients ≤ 17 years who received medical care by Rotterdam HEMS from 2012 until 2017 was carried out.

Results

During the study period, 1905 pediatric patients were included. 59.1% of patients were male and mean age was 6.1 years with 53.2% of patients aged ≤ 3 years. 53.6% were traumatic patients and 49.7% were non-traumatic patients. 18.8% of patients were intubated. Surgical procedures were performed in 0.9%. Medication was administered in 58.1% of patients. Cardiopulmonary resuscitation (CPR) was necessary in 12.9% of patients, 19.9% were admitted to the intensive care unit and 14.0% needed mechanical ventilation. Overall mortality was 9.5%. Mortality in trauma patients was 5.5% and in non-trauma group 15.3%. 3.9% of patients died at the scene.

Conclusions

Patients attended by HEMS are at high risk of prehospital interventions like CPR or intubation. EMS has little exposure to critically ill or injured children. Hence, HEMS expertise is required to perform critical procedures. Trauma patients had higher survival rates than non-traumatic patients. This may be explained by underlying illnesses in non-traumatic patients and CPR as reason for dispatch. Further research is needed to identify options for improving prehospital care in the non trauma pediatric patients.

Why do infants need out-of-hospital emergency medical services? A retrospective, population-based study

Background

The challenges encountered in emergency medical services (EMS) contacts with children are likely most pronounced in infants, but little is known about their out-of-hospital care. Our primary aim was to describe the characteristics of EMS contacts with infants. The secondary aims were to examine the symptom-based dispatch system for nonverbal infants, and to observe the association of unfavorable patient outcomes with patient and EMS mission characteristics.

Methods

In a population-based 5-year retrospective cohort of all 1712 EMS responses for infants (age < 1 year) in Helsinki, Finland (population 643,000, < 1-year old population 6548), we studied 1) the characteristics of EMS missions with infants; 2) mortality within 12 months; 3) pediatric intensive care unit (PICU) admissions; 4) medical state of the infant upon presentation to the emergency department (ED); 5) any medication or respiratory support given at the ED; 6) hospitalization; and 7) surgical procedures during the same hospital visit.

Results

1712 infants with a median age of 6.7 months were encountered, comprising 0.4% of all EMS missions. The most common complaints were dyspnea, low-energy falls, and choking. Two infants died on-scene. The EMS transported 683 (39.9%) infants. One (0.1%) infant died during the 12-month follow-up period. Ninety-one infants had abnormal clinical examination upon arrival at the ED. PICU admissions (n = 28) were associated with young age (P < 0.01), a history of prematurity or problems in the neonatal period (P = 0.01), and previous EMS contacts within 72 h (P = 0.04). The adult-derived dispatch codes did not associate with the final diagnoses of the infants.

Conclusions

Infants form a small but distinct group in pediatric EMS care, with specific characteristics differing from the overall pediatric population. Many EMS contacts with infants were nonurgent or medically unjustified, possibly reflecting an unmet need for other family services. The use of adult-derived symptom codes for dispatching is not optimal for infants. Unfavorable patient outcomes were rare. Risk factors for such outcomes include quickly renewed contacts, young age and health problems in the neonatal period.

Prehospital care and transport costs of severely injured children in NSW Australia

BACKGROUND

Injury is the leading cause of childhood death and disability in Australia. Prehospital emergency services in New South Wales (NSW) are provided by NSW Ambulance. The incidence, pre-hospital care provided and outcomes of children suffering major injury in NSW has not previously been described.

METHODS

This retrospective study was conducted between July 2015 and September 2016 and included children <16 years with an injury severity score (ISS) >9, or requiring intensive care admission, or deceased following injury and treated in NSW. Children were identified through the three NSW Paediatric Trauma Centres, the NSW Trauma Registry, NSW Medical Retrieval Registry (AirMaestro, Avinet, Australia).

RESULTS

There were 359 majorly injured children treated by NSW-based emergency service providers, the majority were male (73.3%) with a mean (SD) age of 8.0 (5.2) years. The median (IQR) injury severity score (ISS) for those transported via NSW emergency medical services was 10 (9-17), with almost half (44.1%) treated prehospital having an ISS >12. The most common documented interventions were intravenous access (44.1%) and oxygen therapy (39.6%). Intubation and chest decompression were recorded in 15.3% and 3.1% of cases respectively. The calculated median (IQR) transport charges for NSW Emergency Services was AUD $942 ($841.3-$1184.6).

CONCLUSION

Critical interventions are performed infrequently in children with major injuries in the pre-hospital environment. The monitoring of the incidence and success rates for staff performing these interventions is not readily available from all prehospital emergency medical services operating in NSW. The capacity and processes to monitor and audit all critical interventions in the paediatric population should be resourced and clearly defined.

Multicenter Evaluation of Prehospital Seizure Management in Children

BACKGROUND

Seizures are a common reason why emergency medical services (EMS) transports children by ambulance. Timely seizure cessation prevents neurologic morbidity, respiratory compromise, and mortality. Implementing recommendations from an evidence-based pediatric prehospital guideline may enhance timeliness of seizure cessation and optimize medication dosing.

OBJECTIVE

We compared management of pediatric prehospital seizures across several EMS systems after protocol revision consistent with an evidence-based guideline.

METHODS

Using a retrospective, cross-sectional approach, we evaluated actively seizing patients (0-17 years old) EMS transported to a hospital before and after modifying local protocols to include evidence-based recommendations for seizure management in three EMS agencies. We electronically queried and manually abstracted both EMS and hospital data at each site to obtain information about patient demographics, medications given, seizure cessation and recurrence, airway interventions, access obtained, and timeliness of care. The primary outcome of the study was the appropriate administration of midazolam based on route and dose. We analyzed these secondary outcomes: frequency of seizure activity upon emergency department (ED) arrival, frequency of respiratory failure, and timeliness of care.

RESULTS

We analyzed data for 533 actively seizing patients. Paramedics were more likely to administer at least one dose of midazolam after the protocol updates [127/208 (61%) vs. 232/325 (71%), p = 0.01, OR = 1.60 (95% CI: 1.10-2.30)]. Paramedics were also more likely to administer the first midazolam dose via the preferred intranasal (IN) or intramuscular (IM) routes after the protocol change [(63/208 (49%) vs. 179/325 (77%), p < 0.001, OR = 3.24 (2.01-5.21)]. Overall, paramedics administered midazolam approximately 14 min after their arrival, gave an incorrect weight-based dose to 130/359 (36%) patients, and gave a lower than recommended dose to 94/130 (72%) patients. Upon ED arrival, 152/533 (29%) patients had a recurrent or persistent seizure. Respiratory failure during EMS care or subsequently in the ED occurred in 90/533 (17%) patients.

CONCLUSIONS

Implementation of an evidence-based seizure protocol for EMS increased midazolam administration. Patients frequently received an incorrect weight-based dose. Future research should focus on optimizing administration of the correct dose of midazolam to improve seizure cessation.

Success and complications by team composition for prehospital paediatric intubation: a systematic review and meta-analysis

Background

Clinical team composition for prehospital paediatric intubation may affect success and complication rates. We performed a systematic review and meta-analysis to determine the success and complication rates by type of clinical team.

Methods

We searched MEDLINE, EMBASE, and CINAHL for interventional and observational studies describing prehospital intubation attempts in children with overall success, first-pass success, and complication rates. Eligible studies, data extraction, and assessment of risk of bias were assessed independently by two reviewers. We performed a random-effects meta-analysis of proportions.

Results

Forty studies (1989 to 2019) described three types of clinical teams: non-physician teams with no relaxants (22 studies, n = 7602), non-physician teams with relaxants (12 studies, n = 2185), and physician teams with relaxants (12 studies, n = 1780). Twenty-two (n = 3747) and 18 (n = 7820) studies were at low and moderate risk of bias, respectively. Non-physician teams without relaxants had lower overall intubation success rate (72%, 95% CI 67–76%) than non-physician teams with relaxants (95%, 95% CI 93–98%) and physician teams (99%, 95% CI 97–100%). Physician teams had higher first-pass success rate (91%, 95% CI 86–95%) than non-physicians with (75%, 95% CI 69–81%) and without (55%, 95% CI 48–63%) relaxants. Overall airway complication rate was lower in physician teams (10%, 95% CI 3–22%) than non-physicians with (30%, 95% CI 23–38%) and without (39%, 95% CI 28–51%) relaxants.

Conclusion

Physician teams had higher rates of intubation success and lower rates of overall airway complications than other team types. Physician prehospital teams should be utilised wherever practicable for critically ill children requiring prehospital intubation.

Physician-staffed helicopter emergency medical services augment ground ambulance paediatric airway management in urban areas: a retrospective cohort study

Objectives

Paediatric intubation is a high-risk procedure for ground emergency medical services (GEMS). Physician-staffed helicopter EMS (PS-HEMS) may bring additional skills, drugs and equipment to the scene including advanced airway management beyond the scope of GEMS even in urban areas with short transport times. This study aimed to evaluate prehospital paediatric intubation performed by a PS-HEMS when dispatched to assist GEMS in a large urban area and examine how often PS-HEMS provided airway intervention that was not or could not be provided by GEMS.

Methods

We performed a retrospective observational study from July 2011 to December 2016 of a PS-HEMS in a large urban area (Sydney, Australia), which responds in parallel to GEMS. GEMS intubate without adjuvant neuromuscular blockade, whereas the PS-HEMS use neuromuscular blockade and anaesthetic agents. We examined endotracheal intubation success rate, first-look success rate and complications for the PS-HEMS and contrasted this with the advanced airway interventions provided by GEMS prior to PS-HEMS arrival.

Results

Overall intubation success rate was 62/62 (100%) and first-look success was 59/62 (95%) in the PS-HEMS-treated group, whereas the overall success rate was 2/7 (29%) for the GEMS group. Peri-intubation hypoxia was documented in 5/65 (8%) of the PS-HEMS intubation attempts but no other complications were reported. However, 3/7 (43%) of the attempted intubations by GEMS were oesophageal intubations, two of which were unrecognised.

Conclusions

PS-HEMS have high success with low complication rates in paediatric prehospital intubation. Even in urban areas with rapid GEMS response, PS-HEMS activated in parallel can provide safe and timely advanced prehospital airway management for seriously ill and injured children beyond the scope of GEMS practice. Review of GEMS airway management protocols and the PS-HEMS case identification and dispatch system in Sydney is warranted.

Paramedic-Identified Enablers of and Barriers to Pediatric Seizure Management: A Multicenter, Qualitative Study

Background: Seizures have the potential to cause significant morbidity and mortality, and are a common reason emergency medical services (EMS) are requested for a child. An evidence-based guideline (EBG) for pediatric prehospital seizures was published and has been implemented as protocol in multiple EMS systems. Knowledge translation and protocol adherence in medicine can be incomplete. In EMS, systems-based factors and providers' attitudes and beliefs may contribute to incomplete knowledge translation and protocol implementation. Objective: The purpose of this study was to identify paramedic attitudes and beliefs regarding pediatric seizure management and regarding potential barriers to and enablers of adherence to evidence-based pediatric seizure protocols in multiple EMS systems. Methods: This was a qualitative study utilizing semi-structured interviews of paramedics who recently transported actively seizing 0-17 year-old patients in 3 different urban EMS systems. Interviewers explored the providers' decision-making during their recent case and regarding seizures in general. Interview questions explored barriers to and enablers of protocol adherence. Two investigators used the grounded theory approach and constant comparison to independently analyze transcribed interview recordings until thematic saturation was reached. Findings were validated with follow-up member-checking interviews. Results: Several themes emerged from the 66 interviewed paramedics. Enablers of protocol adherence included point-of-care references, the availability of different routes for midazolam and availability of online medical control. Systems-level barriers included equipment availability, controlled substance management, infrequent pediatric training, and protocol ambiguity. Provider-level barriers included concerns about respiratory depression, provider fatigue, preferences for specific routes, febrile seizure perceptions, and inaccurate methods of weight estimation. Paramedics suggested system improvements to address dose standardization, protocol clarity, simplified controlled substance logistics, and equipment availability. Conclusions: Paramedics identified enablers of and barriers to adherence to evidence-based pediatric seizure protocols. The identified barriers existed at both the provider and systems levels. Paramedics identified multiple potential solutions to overcome several barriers to protocol adherence. Future research should focus on using the findings of this study to revise seizure protocols and to deploy measures to improve protocol implementation. Future research should also analyze process and outcome measures before and after the implementation of revised seizure protocols informed by the findings of this study.

Outcomes in children evaluated but not transported by ambulance personnel: retrospective cohort study

BACKGROUND

Not all children with an out-of-hospital emergency medical contact are transported by ambulance to the emergency department (ED). Non-transport means that after on-scene evaluation and possible treatment, ambulance personnel may advise the patient to monitor the situation at home or may refer the patient to seek medical attention by other means of transport. As selecting the right patients for ambulance transport is critical for optimising patient safety and resource use, we studied outcomes in non-transported children to identify possible risk groups that could benefit from ambulance transport.

METHODS

In a population-based retrospective cohort study of all children aged 0-15 years encountered but not transported by ambulance in Helsinki, Finland, between 1 January 2014 and 31 December 2016, we evaluated (1) 12-month mortality, (2) intensive care admissions, (3) unscheduled ED contacts within the following 96 hours after the non-transport decision and (4) the clinical status of the child on presentation to ED in the case of a secondary ED visit.

RESULTS

Of all children encountered by out-of-hospital emergency medical services, 3579/7765 (46%) were not transported to ED by ambulance. There was no mortality or intensive care admissions related to the non-transport. The risk factors for an unscheduled secondary ED visit after a non-transport decision were young age (p=0.001), non-transport decision during the early morning hours (p<0.001) and certain dispatch codes, including 'dyspnoea' (p<0.001), 'vomiting/diarrhoea' (p=0.030) and 'mental illness' (p=0.019). We did not detect deterioration in patients' clinical presentation at ED traceable to non-transport decisions.

CONCLUSIONS

Not transporting all children by ambulance after an out-of-hospital emergency medical contact was not associated with deaths, intensive care admissions or significant deterioration in general condition in our study population and healthcare system. Special attention and a formal non-transport protocol are warranted in certain subgroups, including infants.

Factors Associated With Pediatric Nontransport in a Large Emergency Medical Services System

BACKGROUND

Pediatric patients attended to by emergency medical services (EMS) but not transported to the hospital are an at-risk population. We aimed to evaluate risk factors associated with nontransport by EMS in pediatric patients.

METHODS

We reviewed medical records of 24 agencies in a regional EMS system in Southwestern Pennsylvania between January 1, 2014, and December 31, 2017. We abstracted demographics (age, sex, medical complaint, median household income by zip code, race, ethnicity), clinical characteristics (abnormal vital signs by age, procedures done), and transport characteristics. We excluded patients ≥ 18 years, interfacility transfers, scene assists, cardiac arrest, and those without a patient encounter. We used unadjusted and adjusted logistic regression to identify factors associated with nontransport, reporting adjusted odds ratios (aOR) with 95% confidence intervals (CIs).

RESULTS

We included 30,663 pediatric patients (52.9% male, mean ± SD age = 8.5 ± 6.2 years), of whom 5,002 (16.3%) were nontransports. In adjusted analysis (aOR, 95% CI), nontransports were associated with medical categories of trauma (4.32, 3.57-5.23), respiratory (4.03, 3.09-5.26), toxicologic (2.53, 1.66-3.86), and syncope (5.97, 3.78-9.41). Nontransports were less likely for psychiatric (0.52, 0.34-0.79) complaints; for black patients compared to white (0.31, 0.26-0.37); and in patients 6 to <12 years (0.76, 0.65-0.90), 2 to <6 years (0.77, 0.65-0.91), 1 to <2 years (0.53, 0.42-0.66), and 1 month to 1 year (0.52, 0.40-0.66) compared to patients ≥ 12 years of age. Nontransport was associated with longer scene time (1.03, 1.02-1.04) and with fall compared to winter (1.29, 1.08-1.54) and was less likely in those with abnormal mental status (0.45, 0.33-0.62), medication administration (0.16, 0.08-0.31), or monitor application (0.10, 0.06-0.15).

CONCLUSION

Pediatric nontransports are associated with traumatic, respiratory, and toxicologic complaints and older age. These findings can facilitate development of refusal protocols and research on outcomes of these at-risk patients.

Initial assessment, level of care and outcome among children who were seen by emergency medical services: a prospective observational study

Background

The assessment of children in the Emergency Medical Service (EMS) is infrequent representing 5.4% of the patients in an urban area in the western part of Sweden. In Sweden, patients are assessed on scene by an EMS nurse whom independently decides on interventions and level of care. To aid the EMS nurse in the assessment a triage instrument, Rapid Emergency Triage and Treatment System-paediatrics (RETTS-p) developed for Emergency Department (ED) purpose has been in use the last 5 years. The aim of this study was to evaluate the EMS nurse assessment, management, the utilisation of RETTS-p and patient outcome.

Methods

A prospective, observational study was performed on 651 children aged < 16 years from January to December 2016. Statistical tests used in the study were Mann-Whitney U test, Fisher’s exact test and Spearman’s rank statistics.

Results

The dispatch centre indexed life-threatening priority in 69% of the missions but, of all children, only 6.1% were given a life threatening RETTS-p red colour by the EMS nurse. A total of 69.7% of the children were transported to the ED and, of these, 31.7% were discharged without any interventions. Among the non-conveyed patients, 16 of 197 (8.1%) visited the ED within 72 h but only two were hospitalised. Full triage, including five out of five vital signs measurements and an emergency severity index, was conducted in 37.6% of all children. A triage colour was not present in 146 children (22.4%), of which the majority were non-conveyed. The overall 30-day mortality rate was 0.8% (n = 5) in children 0–15 years.

Conclusions

Despite the incomplete use of all vital signs according to the RETTS-p, the EMS nurse assessment of children appears to be adapted to the clinical situation in most cases and the patients appear to be assessed to the appropriate level of care but indicating an over triage. It seems that the RETTS-p with full triage is used selectively in the pre-hospital assessment of children with a risk of death during the first 30 days of less than 1%.

Paediatric medical emergency calls to a Danish Emergency Medical Dispatch Centre: a retrospective, observational study

BACKGROUND

Little is known regarding paediatric medical emergency calls to Danish Emergency Medical Dispatch Centres (EMDC). This study aimed to investigate these calls, specifically the medical issues leading to them and the pre-hospital units dispatched to the paediatric emergencies.

METHODS

We performed a retrospective, observational study on paediatric medical emergency calls managed by the EMDC in the Region of Southern Denmark in February 2016. We reviewed audio recordings of emergency calls and ambulance records to identify calls concerning patients ≤ 15 years. We examined EMDC dispatch records to establish how the medical issues leading to these calls were classified and which pre-hospital units were dispatched to the paediatric emergencies. We analysed the data using descriptive statistics.

RESULTS

Of a total of 7052 emergency calls in February 2016, 485 (6.9%) concerned patients ≤ 15 years. We excluded 19 and analysed the remaining 466. The reported medical issues were commonly classified as: "seizures" (22.1%), "sick child" (18.9%) and "unclear problem" (12.9%). The overall most common pre-hospital response was immediate dispatch of an ambulance with sirens and lights with a supporting physician-manned mobile emergency care unit (56.4%). The classification of medical issues and the dispatched pre-hospital units varied with patient age.

DISCUSSION

We believe our results might help focus the paediatric training received by emergency medical dispatch staff on commonly encountered medical issues, such as the symptoms and conditions pertaining to the symptom categories "seizures" and "sick child". Furthermore, the results could prove useful in hypothesis generation for future studies examining paediatric medical emergency calls.

CONCLUSION

Almost 7% of all calls concerned patients ≤ 15 years. Medical issues pertaining to the symptom categories "seizures", "sick child" and "unclear problem" were common and the calls commonly resulted in urgent pre-hospital responses.

The epidemiology of pain in children treated by paramedics

OBJECTIVES

The present study aimed to describe paramedic assessment and management of pain in children in a large state-wide ambulance service.

METHODS

A retrospective cohort study included paediatric patients (aged less than 15 years) treated and transported by paramedics in the Australian state of Victoria between 1 January 2008 and 31 December 2011. Primary outcome measures were the frequency of analgesic administration and odds of receiving any analgesic (morphine, fentanyl or methoxyflurane). Data were analysed by descriptive statistics, χ(2) -test and logistic regression to test the association between analgesic administration and the explanatory variables.

RESULTS

There were 38 167 cases that included a description of pain and where any pain scores were >0. Median age was 10 years (IQR 5-12), 59.2% were male and 15 090 (39.5%) received any analgesic. Of patients reported to have severe pain (verbal numeric rating scale 8-10), only 45% (n = 6084) received any analgesia. In unadjusted analysis, patients aged >9 years were more likely to receive analgesia than those aged <3 years (unadjusted odds ratio 4.39, 95% confidence interval 4.01-4.80). Multiple regression analysis found that significant predictors of analgesic administration were patient's sex, patient age, type of pain, initial pain score and case year.

CONCLUSION

Disparities in analgesic administration based on age and the low rate of pain scores documented in very young children identified in the present study should inform strategies that aim to improve the assessment and management of pain in children.

Pediatric Use of Emergency Medical Services: The Role of Chronic Illnesses and Behavioral Health Problems

OBJECTIVE

The increasing use of prehospital emergency medical services (EMS) and its contribution to rising emergency department use and healthcare costs point to the need for better understanding factors associated with EMS use to inform preventive interventions. Understanding patient factors associated with pediatric use of EMS will inform pediatric-specific intervention. We examined pediatric patient demographic and health factors associated with one-time and repeat use of EMS.

METHODS

We reviewed data from Baltimore City Fire Department EMS patient records over a 23-month period (2008-10) for patients under 21 years of age (n = 24,760). Repeat use was defined as involvement in more than one EMS incident during the observation period. Analyses compared demographics of EMS users to the city population and demographics and health problems of repeat and one-time EMS users. Health comparisons were conducted at the patient and incident levels of analysis.

RESULTS

Repeat users (n = 1,931) accounted for 9.0% of pediatric users and 20.8% of pediatric incidents, and were over-represented among the 18-20 year age group and among females. While trauma accounted for approximately one-quarter of incidents, repeat versus one-time users had a lower proportion of trauma-related incidents (7.2% vs. 26.7%) and higher proportion of medical-related incidents (92.6% vs. 71.4%), including higher proportions of incidents related to asthma, seizures, and obstetric/gynecologic issues. In patient-level analysis, based on provider or patient reports, greater proportions of repeat compared to one-time users had asthma, behavioral health problems (mental, conduct and substance use problems), seizures, and diabetes.

CONCLUSIONS

Chronic somatic conditions and behavioral health problems appear to contribute to a large proportion of the repeat pediatric use of this EMS system. Interventions may be needed to engage repeat users in primary care and behavioral health services, to train EMS providers on the recognition and management of behavioral health emergencies, and to improve family care and self-management of pediatric asthma and other chronic conditions.

Impact of High-Fidelity Pediatric Simulation on Paramedic Seizure Management

BACKGROUND

A simulation-based course, Pediatric Simulation Training for Emergency Prehospital Providers (PediSTEPPs), was developed to optimize pediatric prehospital care. Seizures are common in Emergency Medical Services (EMS), and no studies have evaluated pediatric outcomes after EMS simulation training.

OBJECTIVES

The primary objective was to determine if PediSTEPPs enhances seizure protocol adherence in blood glucose measurement and midazolam administration for seizing children. The secondary objective was to describe management of seizing patients by EMS and Emergency Departments (EDs).

METHODS

This is a two-year retrospective cohort study of paramedics who transported 0-18 year old seizing patients to ten urban EDs. Management was compared between EMS crews with at least one paramedic who attended PediSTEPPs and crews that had none. Blood glucose measurement, medications administered, intravenous (IV) access, seizure recurrence, and respiratory failure data were collected from databases and run reports. Data were compared using Pearson's χ(2) test and odds ratios with 95% confidence intervals (categorical) and the Mann-Whitney test (continuous).

RESULTS

Of 2200 pediatric transports with a complaint of seizure, 250 (11%) were actively seizing at the time of transport. Of these, 65 (26%) were treated by a PediSTEPPs-trained paramedic. Blood glucose was slightly more likely to be checked by trained than untrained paramedics (OR = 1.35, 95% CI 0.72-2.51). Overall, 58% received an indicated dose of midazolam, and this was slightly more likely in the trained than untrained paramedics (OR = 1.39, 95% CI 0.77-2.49). There were no differences in secondary outcomes between groups. The prevalence of hypoglycemia was low (2%). Peripheral IVs were attempted in 80%, and midazolam was predominantly given by IV (68%) and rectal (12%) routes, with 51% receiving a correct dose. Seizures recurred in 22%, with 34% seizing on ED arrival. Respiratory failure occurred in the prehospital setting in 25 (10%) patients in the study.

CONCLUSION

Simulation-based training on pediatric seizure management may have utility. Data support the need to optimize the route and dose of midazolam for seizing children. Blood glucose measurement in seizure protocols may warrant reprioritization due to low hypoglycemia prevalence.

KEY WORDS

seizure; emergency medical services; simulation; pediatrics.

Out-of-hospital paediatric emergencies: a prospective, population-based study

BACKGROUND

We wanted to study the incidence, distribution and characteristics of paediatric out-of-hospital emergency care on a population level. This knowledge could ameliorate the design and education of emergency medical services and their personnel.

METHODS

We studied all (n = 1863) emergency medical services responses and the patient records for paediatric patients (age 0-16 years) in Helsinki, Finland (population 603,968, paediatric population 92,742) during a 12-month period (2012). Patient characteristics, diagnoses, time intervals, medical treatments, procedures, vital measurements and outcome of out-of-hospital treatment were available for analysis.

RESULTS

The incidence of emergency medical services -treated paediatric out-of-hospital emergencies was 3.8/1000 inhabitants and 20/1000 1-16-year-old inhabitants. This formed 4.5% of all emergency calls, while children have a threefold share of the population (15%). Falls, dyspnoea, seizures and poisonings account for half of all emergencies. Few patients suffered from a life-threatening condition or trauma. Cardiac arrest or need for advanced life support measures (e.g. intubation) was rare. After evaluation by the emergency medical services, only half of the patients (56%) needed ambulance transportation to hospital. Only 30 (3.7%) of the non-transported patients made an unpremeditated visit to the emergency department after the original contact with the emergency medical services. All of them were well upon arrival to the emergency department.

CONCLUSION

Paediatric out-of-hospital emergencies are infrequent and have specific characteristics differing from the adult population. The design and training of emergency medical services and their personnel should focus on evaluation and management of the most frequent situations.

Unnecessary Use of Red Lights and Sirens in Pediatric Transport

INTRODUCTION

Approximately 25.5 million pediatric patients are treated in Emergency Departments around the United States annually. Roughly 7% of these patients are transported by ambulance; of these, approximately 7% arrive in ambulances running red lights and sirens (RLS). Compared to those transporting without RLS, emergency vehicles employing RLS are involved in more accidents and are associated with more fatalities.

OBJECTIVE

To characterize the use of RLS in pediatric transports and identify factors associated with unnecessary use of RLS.

METHODS

As part of the Children's Safety Initiative (CSI-EMS), a large, multi-phased National Institutes of Health-funded study, we conducted a medical record review of all pediatric RLS transports in an urban EMS system over a 4-year period (2008-11). A standardized chart abstraction tool was adapted for the out-of-hospital setting and pilot tested. Charts were independently reviewed by physicians and paramedics, with disagreements arbitrated by a pediatric emergency physician. Reviewers were asked to judge whether RLS transport was necessary and to provide comments justifying their position. Descriptive statistics were used to measure the frequency of unnecessary transports and logistic regression analysis was employed to identify factors associated with unnecessary use of RLS.

RESULTS

Of 490 RLS transports, experts identified 96 (19.6%) as unnecessary use of RLS. Necessary and unnecessary RLS transports had similar patient sex and duration of transport, though unnecessary use of RLS tended to increase with patient age. The call reasons that represented the largest proportion of unnecessary RLS transports were trauma (49.0%), respiratory distress (16.7%), and seizure/altered mental status (11.5%). Compared with necessary RLS transports, unnecessary RLS transports were less likely to require resuscitation, airway management, or medication administration. Univariate analysis revealed that patient vital signs within normal limits were associated with increased risk of unnecessary RLS transport, with the most pronounced effect seen in the normal GCS score group (odds ratio 7.74, p-value 0.001).

CONCLUSIONS

This analysis identified patient and transport characteristics associated with unnecessary use of RLS. Our results could help serve as the basis for designing and prospectively evaluating protocols for use of RLS, potentially mitigating the risk associated with transport in pediatric patients.

Comparing the Accuracy of Three Pediatric Disaster Triage Strategies: A Simulation-Based Investigation

Background

It is unclear which pediatric disaster triage (PDT) strategy yields the best accuracy or best patient outcomes.

Methods

We conducted a cross-sectional analysis on a sample of emergency medical services providers from a prospective cohort study comparing the accuracy and triage outcomes for 2 PDT strategies (Smart and JumpSTART) and clinical decision-making (CDM) with no algorithm. Participants were divided into cohorts by triage strategy. We presented 10-victim, multi-modal disaster simulations. A Delphi method determined patients’ expected triage levels. We compared triage accuracy overall and for each triage level (RED/Immediate, YELLOW/Delayed, GREEN/Ambulatory, BLACK/Deceased).

Results

There were 273 participants (71 JumpSTART, 122 Smart, and 81 CDM). There was no significant difference between Smart triage and CDM. When JumpSTART triage was used, there was greater accuracy than with either Smart (P<0.001; OR [odds ratio]: 2.03; interquartile range [IQR]: 1.30, 3.17) or CDM (P=0.02; OR: 1.76; IQR: 1.10, 2.82). JumpSTART outperformed Smart for RED patients (P=0.05; OR: 1.48; IQR: 1.01,2.17), and outperformed both Smart (P<0.001; OR: 3.22; IQR: 1.78,5.88) and CDM (P<0.001; OR: 2.86; IQR: 1.53,5.26) for YELLOW patients. Furthermore, JumpSTART outperformed CDM for BLACK patients (P=0.01; OR: 5.55; IQR: 1.47, 20.0).

Conclusion

Our simulation-based comparison suggested that JumpSTART triage outperforms both Smart and CDM. JumpSTART outperformed Smart for RED patients and CDM for BLACK patients. For YELLOW patients, JumpSTART yielded more accurate triage results than did Smart triage or CDM. (Disaster Med Public Health Preparedness. 2016;10:253–260)

Pediatric Out-of-Hospital Critical Procedures in the United States

OBJECTIVE

Regular clinical application is important for maintenance of difficult resuscitation skills. Although emergency medical services must provide life-saving care for critically ill and injured children, the frequency with which these procedures are performed is unknown. We sought to characterize critical pediatric procedures performed by emergency medical service personnel in the United States.

DESIGN

We performed a retrospective, descriptive study of emergency medical service responses.

SETTING AND PATIENTS

We included patients less than 18 years old in the 2011 National Emergency Medical Services Information Systems national data set. We identified emergency medical service cases receiving critical procedures, including intubation, cricothyroidotomy, cardiac pacing, cardioversion, defibrillation, needle decompression, pericardiocentesis, and intraosseous or central venous catheter placement.

INTERVENTIONS

None.

MEASUREMENTS AND MAIN RESULTS

We analyzed the data to determine the number and prevalence of procedures, success rates, and factors associated with success. Of the 14,371,941 emergency medical service responses, 865,591 (6.8%) involved children. Emergency medical service responses to pediatric patients most often involved traumatic injuries (35.7%) or respiratory complications (13.2%). Emergency medical service performed a total of 616,913 procedures on 246,016 pediatric cases. Critical procedures were infrequently performed (n = 11,026, 10 per 1,000 pediatric cases). The most common critical procedures performed were intubation (n = 3,599, 6.7 per 1,000 pediatric cases) and intraosseous access (n = 2,618, 5 per 1,000 pediatric cases). Overall, 81% of critical procedures were successful. Increasing age and interfacility transfers were associated with greater odds of procedural success (p < 0.01).

CONCLUSION

Despite the broad range of pediatric conditions seen in the prehospital setting, pediatric critical procedures are infrequently performed. These data highlight factors that are associated with successful completion of critical pediatric procedures.

Parenteral midazolam is superior to diazepam for treatment of prehospital seizures

INTRODUCTION

Diazepam and midazolam are commonly used by paramedics to treat seizures. A period of drug scarcity was used as an opportunity to compare their effectiveness in treating prehospital seizures.

METHODS

A retrospective chart review of a single, large, commercial agency during a 29-month period was performed. The period included alternating shortages of both medications. Ambulances were stocked with either diazepam or midazolam based on availability of the drugs. Adult patients who received at least 1 parenteral dose of diazepam or midazolam for treatment of seizures were included. The regional prehospital protocol recommended 5 mg intravenous (IV) diazepam, 5 mg intramuscular (IM) diazepam, 5 mg IM midazolam, or 2.5 mg IV midazolam. Medication effectiveness was compared with respect to the primary end point: cessation of seizure without repeat seizure during the prehospital encounter.

RESULTS

A total of 440 study subjects received 577 administrations of diazepam or midazolam and met the study criteria. The subjects were 52% male, with a mean age of 48 (range 18-94) years. A total of 237 subjects received 329 doses of diazepam, 64 (27%) were treated with first-dose IM. A total of 203 subjects received 248 doses of midazolam; 71 (35%) were treated with first-dose IM. Seizure stopped and did not recur in 49% of subjects after parenteral diazepam and 65% of subjects after parenteral midazolam (p = 0.002). Diazepam and midazolam exhibited similar first dose success for IV administration (58 vs. 62%; p = 0.294). Age, gender, seizure history, hypoglycemia, the presence of trauma, time to first administration, prehospital contact time, and frequency of IM administration were similar between groups.

CONCLUSION

For parenteral administration, midazolam demonstrated superior first-dose seizure suppression. This study demonstrates how periods of drug scarcity can be utilized to study prehospital medication effectiveness.

How well do General EMS 911 dispatch protocols predict ED resource utilization for pediatric patients?

INTRODUCTION

The use of Emergency Medical Services (EMS) for low-acuity pediatric problems is well documented. Attempts have been made to curb potentially unnecessary transports, including using EMS dispatch protocols, shown to predict acuity and needs of adults. However, there are limited data about this in children. The primary objective of this study is to determine the pediatric emergency department (PED) resource utilization (surrogate of acuity level) for pediatric patients categorized as "low-acuity" by initial EMS protocols.

METHODS

Records of all pediatric patients classified as "low acuity" and transported to a PED in winter and summer of 2010 were reviewed. Details of the PED visit were recorded. Patients were categorized and compared based on chief complaint group. Resource utilization was defined as requiring any prescription medications, labs, procedures, consults, admission or transfer. "Under-triage" was defined as a "low-acuity" EMS transport subsequently requiring emergent interventions.

RESULTS

Of the 876 eligible cases, 801 were included; 392/801 had no resource utilization while 409 of 801 had resource utilization. Most (737/801) were discharged to home; however, 64/801 were admitted, including 1 of 801 requiring emergent intervention (under-triage rate 0.12%). Gastroenterology and trauma groups had a significant increase in resource utilization, while infectious disease and ear-nose-throat groups had decreased resource utilization.

DISCUSSION

While this EMS system did not well predict overall resource utilization, it safely identified most low-acuity patients, with a low under-triage rate. This study identifies subgroups of patients that could be managed without emergent transport and can be used to further refine current protocols or establish secondary triage systems.

Assessment of technique during pediatric direct laryngoscopy and tracheal intubation: a simulation-based study

OBJECTIVES

This study aimed to assess the feasibility of characterizing direct laryngoscopy (DL) and tracheal intubation (TI) technique based on videographic review and to determine the association between technical aspects of DL and TI with successful completion of intubation.

METHODS

Physicians in pediatrics, emergency medicine, pediatric emergency, pediatric critical care, and neonatology performed TI on simulators (newborn, infant, and adult). A video laryngoscope was used without a display (ie, as a direct laryngoscope), and video recordings were reviewed. A scoring instrument characterized technical aspects of DL and TI; outcomes related to procedural performance were recorded. Interrater reliability of the instrument was assessed by weighted κ; collinearity was assessed by a correlation matrix. Univariate analysis determined technical aspects of DL and TI associated with outcomes.

RESULTS

Seventy-three subjects performed 206 intubations. Significant differences existed between simulators with respect to the first-attempt success (newborn, 63%; infant, 80%; adult, 42%; P < 0.001), laryngoscopy time (27 seconds vs 31 seconds vs 42 seconds, P < 0.001), and percentage of glottic opening score (68% vs 65% vs 35%, P < 0.001). Interrater reliability for the instrument was good (κ = 0.68); no significant collinearity existed between data points. Position of the tip of the laryngoscope blade in the vallecula and under the proximal epiglottis was associated with improved first-attempt success.

CONCLUSIONS

Pediatric intubation technique can be reliably assessed using videography and video laryngoscopy. Future studies should examine video-based characterization of DL and TI technique in real patients outside the operating room, as well as whether technical aspects of intubation are associated with improved outcomes.

Prehospital pediatric emergencies in Austrian helicopter emergency medical service - a nationwide, population-based cohort study

INTRODUCTION

Arguably, the most challenging emergencies encountered by emergency medical service crews involve children. Because only scant data exist about the epidemiology of pediatric emergencies in helicopter emergency medical service (HEMS) on a population level, we sought to determine the epidemiological characteristics stratified by responding area in a large nationwide sample.

METHODS

This was a retrospective cohort study including all pediatric patients (0-14 years of age) who were treated by HEMS in Austria from January 2006 to June 2007 (18 months).

RESULTS

Pediatric emergencies accounted for 2207 (8.2%) of a total of 26.850 helicopter rescue missions. Of those, 69.9% (n = 1543) were not involved in life-threatening emergencies. The rate of critical pediatric emergencies was higher in urban than in rural or alpine environment (45.2%, 38.2% and 20.3%, respectively). The most common chief complaint was trauma; the frequency of injuries ranged from 54.2% (582/1074) in rural area and 60.3% (44/73) in urban area to 91.4% (969/1060) in alpine environment. Fracture and head trauma (34.9%; 557/1595 and 26.3%; 419/1595, respectively) were the most common injuries. Advanced life support measures like tracheal intubation, cardiopulmonary resuscitation and intraosseous access were rarely performed (3.7%; n = 82, 1.9%; n = 42 and 0.9%; n = 19, respectively).

CONCLUSIONS

Pediatric emergencies in Austrian HEMS show different epidemiological characteristics in alpine, urban and rural operational environments. Because of challenges and infrequency of prehospital pediatric emergencies, HEMS crews need to maintain their skills in pediatric advanced life support and trauma care.

Characteristics and outcome of prehospital paediatric tracheal intubation attended by anaesthesia-trained emergency physicians

AIM

To collect data regarding prehospital paediatric tracheal intubation by emergency physicians skilled in advanced airway management.

METHODS

A prospective 8-year observational study of a single emergency physician-staffed emergency medical service. Self-reporting by emergency physicians of all children aged 0-14 years who had prehospital tracheal intubation and were attended by either anaesthesia-trained emergency physicians (group 1) or by a mixture of anaesthesia and non-anaesthesia-trained emergency physicians (group 2).

RESULTS

Eighty-two out of 2040 children (4.0%) had prehospital tracheal intubation (58 in group 1). The most common diagnoses were trauma (50%; in school children, 73.0%), convulsions (13.4%) and SIDS (12.2%; in infants, 58.8%). The overall tracheal intubation success rate was 57 out of 58 attempts (98.3%). Compared to older children, infants had a higher number of Cormack-Lehane scores of 3 or 4, "difficult to intubate" status (both 3 out of 13; 23.1%) and a lower first attempt success rate for tracheal intubation (p=0.04). Among all 82 children 71 (86.6%) survived to hospital admission and 63 (76.8%) to discharge. Of the 63 survivors, 54 (85.7%) demonstrated a favourable or unchanged neurological outcome (PCPC 1-3). The survival and neurological outcomes of infants were inferior compared to older children (p<0.001). On average an emergency physician performed one prehospital tracheal intubation in 3 years in a child and one in 13 years in an infant.

CONCLUSIONS

Anaesthesia-trained emergency physicians working in our system report high success rates for prehospital tracheal intubation in children. Survival and neurological outcomes were considerably better than reported in previous studies.

Review of endotracheal intubations by Ottawa advanced care paramedics in Canada

OBJECTIVES

In the last several years, the National Association of EMS Physicians (NAEMSP) has called for better reporting on prehospital endotracheal intubation (ETI) and has provided guidelines and tools for better systematic review. We sought to evaluate the success of prehospital, non-drug-assisted ETI performed by Ottawa advanced care paramedics (ACPs) based on those guidelines.

METHODS

A retrospective review was conducted on ETI performed by Ottawa ACPs over a 25-month period to determine the overall success rate of ETI. To qualify our results, descriptive analysis was conducted on demographic data. The relationships between success rate, patient demographic data, and preintubation conditions were examined.

RESULTS

Overall success rate of ACP prehospital, non-drug-assisted ETI was 82.1% (95% confidence interval [CI]: 79.6, 84.3), representing a decreased value in comparison with the 90.7% of the previous study (p < 0.001). The study population comprised 1,029 intubated patients, the majority being adults (98.4%), with a mean age of 65.4 years (standard deviation [SD] 18.4). ETIs were successful for 64.6% (95% CI: 61.7, 67.5) of the first attempts; 79% of successful intubations were achieved within two attempts. ETI achievement was correlated with patients' age, with patients designated as vital signs absent (VSA), with those having a preintervention Glasgow Coma Scale (GCS) score of 3, and with those who were orally intubated (p < 0.05). Gender, weight, the nature (medical and trauma) of patient types, and locations of ambulance calls were found not to be related to the overall intubation success.

CONCLUSIONS

This study reported the success rate of non-drug-assisted, prehospital ETI by ACPs in the Ottawa region. Our findings emphasize the importance of quality assessment for individual emergency medical services systems, to ensure optimum performance in ETI practice over time, and for intubation skill-retention training.

Epidemiology of pediatric transports and non-transports in an urban Emergency Medical Services system

OBJECTIVE

This study was done to describe an urban, Emergency Medical Service (EMS) system's experiences with pediatric patients and the rate and characteristics of non-transports in this setting.

METHODS

A retrospective analysis of all pediatric patients responded to by the Detroit Fire Department Division of EMS between January 1, 2002 and August 30, 2002 was done.

RESULTS

There were 5,976 pediatric EMS cases. Children 10 years of age or older accounted for 49.4% of transports, 53.8% of all patients had medical illness, and 38.8% of the patients belonged to the non-urgent category. A large percentage of patients were not transported (27.2%), most commonly secondary to parent/caregiver/patient refusals. The median number of minutes on-scene for refusals was longer than for transports (23.5 vs. 17.3, respectively)[difference = 6.2 minutes (95% CI: 5.6-6.9)]. The odds ratios (OR) for refusal was highest for assaults (2.09; 95% CI: 1.66-2.63), difficulty in breathing (1.38; 95% CI: 1.14-1.68), and motor vehicle accidents (1.19; 95% CI: 1.04-1.37).

CONCLUSIONS

In this system, the majority of pediatric patients are not severely ill, and a large number are not transported. Non-transports are more likely to be young adolescents, have been involved in assaults, and have a longer on-scene time.