Amir Blumenfeld

Using advanced simulation for recognition and correction of gaps in airway and breathing management skills in prehospital trauma care

In this prospective study, we used two full-scale prehospital trauma scenarios (severe chest injury and severe head injury) and checklists of specific actions, reflecting essential actions for a safe treatment and successful outcome, were used to assess performance of postinternship physician graduates of the Advanced Trauma Life Support (ATLS) course. In the first 36 participants, simulated training followed basic training in airway and breathing management, whereas in the next 36 participants, 45 min of simulative training in airway management using the Air-Man simulator (Laerdal, Norway) were added before performing the study scenarios. The content of training was based on common mistakes performed by participants of the first group. After the change in training, the number of participants not performing cricoid pressure or not using medication during intubation decreased from 55% (20 of 36) to 8% (3 of 36) and from 42% (15 of 36) to 11% (4 of 36), respectively (P < 0.05). The number of participants not holding the tube properly before fixation decreased from 28% (10 of 36) to 0% (0 of 36) (P < 0.05). In the severe head trauma scenario, performed by 15 of 36 participants in each group, the incidence of mistakes in the management of secondary airway or breathing problems after initial intubation decreased from 60% (9 of 15) to 0% (0 of 15) (P < 0.05). The present study highlights problems in prehospital trauma management, as provided by the ATLS course. It seems that graduates may benefit from simulation-based airway and breathing training. However, clinical benefits from simulation-based training need to be evaluated.

Israeli army casualties in the second palestinian uprising

This study analyzes the pattern of injuries and evacuation in this unique low-intensity conflict with many casualties and high availability of medical services and evacuation means. Injury data regarding Israel Defense Forces casualties during the first 19 weeks of the events were collected and analyzed. Ninety-six of the 356 Israel Defense Forces casualties during the first 4 months of the events were admitted or killed. Bullets (63.5%) were the most common cause of injury. Fragments and explosives accounted for 14.6% of injuries, stones and sling-thrown marbles accounted for 9.4% of injuries, and 12.5% of injuries were from miscellaneous causes. The most commonly injured body regions were the head, face, and neck (54.2%) and the limbs (50.0%). The trunk was injured in 25.0% of cases, and 4.2% of injuries were classified as external. Injury severity distribution was bimodal. The largest group represented patients with Injury Severity Scores (ISSs) between 1 and 14. The other large group was the 23 dead soldiers. The group of soldiers with ISSs between 16 and 75 included five patients only. Sixteen of the 23 dead soldiers were killed in action. Seven soldiers died of their wounds in the hospital, four of them within the first hour after admittance. A total of 83.8% of the casualties were evacuated by ambulances and the rest were evacuated by air. All casualties except one reached the hospital within 1.5 hour after the injury. Seventy-five percent of the injured were evacuated to trauma centers, and the rest were evacuated to other hospitals. The group of soldiers evacuated to trauma centers had a significantly (p = 0.021) higher mean ISS. The nature of this conflict resulted in a bimodal distribution of injuries. Most of the soldiers were either mildly injured or killed, whereas relatively few suffered severe injuries. The prehospital medical forces should be able to identify such patients and provide prompt treatment and evacuation. The abundance of head, face, neck, and limb injuries suggests that the current armor systems should be further investigated and improved.

Cognitive knowledge decline after Advanced Trauma Life Support Courses

OBJECTIVE To assess the cognitive knowledge decline among graduates of the Advanced Trauma Life Support (ATLS) program in Israel, to compare the rate of decline between surgeons and nonsurgeons, and to recommend appropriate timing for refresher courses. METHODS A prospective study based on multiple-choice question test results of 220 ATLS course graduates was conducted 3 to 60 months after course completion. These results were then compared with the examination results immediately after the course. A statistical model based on survival analysis was used to evaluate the decline pattern and extent and to compare the study groups. RESULTS A significant decline of cognitive knowledge over time among ATLS graduates was demonstrated. This decline was significantly greater in the nonsurgical group. A critical point of 20% cognitive knowledge loss among 50% of the examined physicians was observed around the 180th week after completion of the course. CONCLUSION Physicians taking the ATLS course lose a significant part of their acquired cognitive knowledge after 3.5 years. Surgeons retain their cognitive knowledge for longer periods of time. Based on the study results, the optimal timing for a refresher course is between 3 and 4 years after the initial ATLS course.

The combative multitrauma patient: a protocol for prehospital management.

Objective To describe the management of the combative trauma patient in the prehospital setting, and to suggest a protocol for management. Methods A retrospective, prehospital case series conducted in Israel among military medical teams over the course of nearly 2 years, between January 2000 and October 2002. We collected a case series of patients who became combative following traumatic injury. Following data collection, we summoned an expert panel and developed a protocol for physicians and paramedics upon encountering a combative trauma patient. Results Available data were found for 11 patients and these were included in the analysis. Most victims included in this study were injured under military or geographical circumstances mandating a long time interval from injury to definitive care, namely 114 min (range 38–225 min). Five patients received intravenous ketamine, in three of which it was coadministered with midazolam. Sedation with ketamine given alone, or combined with other drugs, was effective in all five cases. In no case did a patient become more agitated after administration. No adverse effects were recorded by the prehospital caregivers. Conclusions In this article, an algorithmic approach to the treatment of the patients agitation is outlined, using ketamine as the principal sedating agent, either alone or combined with midazolam. The combination of both drugs is suggested for the effective sedation of adult prehospital combative patient population.

Distribution of casualties in a mass-casualty incident with three local hospitals in the periphery of a densely populated area: lessons learned from the medical management of a terrorist attack.

INTRODUCTION A mass-casualty incident (MCI) can occur in the periphery of a densely populated area, away from a metropolitan area. In such circumstances, the medical management of the casualties is expected to be difficult because the nearest hospital and the emergency medical services (EMS), only can offer limited resources. When coping with these types of events (i.e., limited medical capability in the nearby medical facilities), a quick response time and rational triage can have a great impact on the outcome of the victims. The objective of this study was to identify the lessons learned from the medical response to a terrorist attack that occurred on 05 December 2005, in Netanya, a small Israeli city. METHODS Data were collected during and after the event from formal debriefings and from patient files. The data were processed using descriptive statistics and compared to those from previous events. The event is described according to Disastrous Incidents Systematic Analysis Through Components, Interactions, Results (DISAST-CIR) methodology. RESULTS Four victims and the terrorist died as a result of this suicide bombing. A total of 131 patients were evacuated (by EMS or self-evacuation) to three nearby hospitals. Due to the proximity of the event to the ambulance dispatch station, the EMS response was quick. The first evacuation took place only three minutes after the explosion. Non-urgent patients were diverted to two close-circle hospitals, allowing the nearest hospital to treat urgent patients and to receive the majority of self-evacuated patients. The nearest hospital continued to receive patients for >6 hours after the explosion, 57 of them (78%) were self-evacuated. CONCLUSION The distribution of casualties from the scene plays a vital role in the management of a MCI that occurs in the outskirts of a densely populated area. Non-urgent patients should be referred to a hospital close to the scene of the event, but not the closest hospital. The nearest hospital should be prepared to treat urgent casualties, as well as a large number of self-evacuated patients.

Case study of the terrorist bombing in Tel Aviv market – putting all the eggs in one basket might save lives

Objectives: On 1 November 2004 a suicide bomber detonated himself in Tel Aviv, in a crowded open market space, resulting in 3 dead victims and 34 casualties. This event in a central urban area was handled quickly by experienced emergency medical service (EMS) teams. We analysed evacuation destinations of urgent casualties in order to learn whether severe casualties should all be evacuated to the closest trauma centre. Alternatively, they might be distributed to all nearby hospitals, both trauma and non‐trauma centres. A third possibility is directing urgent casualties only to trauma centres, dividing them between the close trauma centre and a ‘second cycle’ distant level A trauma centre. Methods: Data were collected from formal debriefings carried out after the event in the Ministry of Health, in the Israeli Defense Forces Medical Corps (IDF MCs) and in the Home Front Command (HFC). Other debriefings, in which we took part, were those of the EMS and participating hospitals. We analysed these data to learn...

Medical consequences of terrorist bombs containing spherical metal pellets: analysis of a suicide terrorism event.

Objective: Various metal objects added to explosives increase and diversify the wounding from bombing; especially favoured are spherical missiles for their special injuring characteristics. Our objective was to study the medical consequences and ballistic effects on human tissue of spherical metal pellets used in terrorist bombings. Methods: The clinical and forensic data of all bodily injured casualties of a suicide terrorist bombing in a crowded hotel dining room were analysed retrospectively. Results: Of the 250 people at the scene, 164 were injured, with 91 (55.5%) suffering bodily injuries; 30 of them died. The immediately deceased had disseminated tissue damage and their bodies were saturated with steel spheres. Thirty-two immediate survivors sustained severe injuries (Injury Severity Score ≥16), and all suffered tissue penetration by the pellets. Twenty-three (32%) underwent surgery and 15 (21%) required intensive care. Conclusions: Metal pellets propelled by the explosion enhanced the secondary pattern of injury and injured even patients remote from the origin. Tissue destruction and specific organ injuries among survivors were limited. To evaluate and manage victims of terrorist bombings properly, medical teams should become familiar with these severe injuries.

Israeli hospital preparedness for terrorism-related multiple casualty incidents: Can the surge capacity and injury severity distribution be better predicted?

BACKGROUND The incidence of large-scale urban attacks on civilian populations has significantly increased across the globe over the past decade. These incidents often result in Hospital Multiple Casualty Incidents (HMCI), which are very challenging to hospital teams. 15 years ago the Emergency and Disaster Medicine Division in the Israeli Ministry of Health defined a key of 20 percent of each hospitals bed capacity as its readiness for multiple casualties. Half of those casualties are expected to require immediate medical treatment. This study was performed to evaluate the efficacy of the current readiness guidelines based on the epidemiology of encountered HMCIs. METHODS A retrospective study of HMCIs was recorded in the Israeli Defense Force (IDF) home front command and the Israeli National Trauma Registry (ITR) between November 2000 and June 2003. An HMCI is defined by the Emergency and Disaster Medicine Division in the Israeli Ministry of Health as >or=10 casualties or >or=4 suffering from injuries with an ISS>or=16 arriving to a single hospital. RESULTS The study includes a total of 32 attacks, resulting in 62 HMCIs and 1292 casualties. The mean number of arriving casualties to a single hospital was 20.8+/-13.3 (range 4-56, median 16.5). In 95% of the HMCIs the casualty load was <or=52. Based on severity scores and ED discharges 1022 (79.2%) casualties did not necessitate immediate medical treatment. CONCLUSION Hospital preparedness can be better defined by a fixed number of casualties rather than a percentile of its bed capacity. Only 20% of the arriving casualties will require immediate medical treatment. Implementation of this concept may improve the utilisation of national emergency health resources both in the preparation phase and on real time.

Prehospital care of orthopedic injuries.

Orthopedic injuries are predominant among combat casualties, and carry the potential for significant morbidity. An expert consensus process (Prehospital care of military orthopedic trauma: A consensus meeting, Israel Defense Forces Medical Corps, May 2003) was used to create guidelines for the treatment of these injuries by military prehospital providers. The consensus treatment guidelines developed by experienced orthopedic trauma personnel from leading trauma centers in Israel are presented in this paper. For victims with open fractures, the first priority is hemorrhage control. Splinting, irrigation, and wound care should be performed while waiting for transport, or, in any scenario, in the case of an isolated limb injury. The use of traction splints was advocated for both the rapid transport scenario (up to one hour from the time of injury to arrival at the hospital) and the delayed transport scenario. In the urban setting, traction splints may not be necessary. Any victim experiencing pelvic pain following a high-energy mechanism of injury should be presumed to have an unstable pelvic fracture, and a sheet should be tied around the pelvis. The panel agreed that field-reduction of dislocations should be avoided by the medical officer unless it is anticipated that the patient will need to go through a long evacuation chain and the medical officer is familiar with specific reduction techniques.

Mass medical repatriation of injured civilians after terrorist attack in Mombassa, Kenya: medical needs, resources used, and lessons learned.

INTRODUCTION On 28 November 2002, three suicide bombers crashed their car into a hotel in Mombassa, Kenya; 12 people were killed, including three Israelis, and 80 were wounded (22 of whom were Israeli). The Israeli Defense Force Airborne Medical Evacuation Flight Teams participated in a repatriation mission to bring the wounded home. OBJECTIVES The objectives of this study are to outline the distinctive aspects of this mission, as well as to share the experiences and lessons learned. METHODS Israeli Army debriefing reports were used to study the composition of the crew, medical equipment taken, injury distribution, mode of operation, and mission schedule. RESULTS A total of six fixed-wing aircraft were used--two Boeing 707s and four Hercules C-130s--with a total of 54 medical team members on board. A total of 260 Israelis were repatriated, 22 of whom were wounded, and three were dead. Of the casualties, 14 were conveyed sitting, and eight supine. The time from the first landing in Kenya to the evacuation of the last supine patient was 5.5 hours. Nurses, as well as social workers, played a central role in the mission. A forward team, including five doctors, was used for the initial organization and for gathering information on the medical status of the casualties. CONCLUSIONS There was redundancy in the medical crew and medical equipment sent. The need for improved infrastructure on the medical aircraft was stressed. Based on this experience, a new mode for operation for similar missions in the future was formulated.