Rigo Hoencamp

Systematic review of the prevalence and characteristics of battle casualties from NATO coalition forces in Iraq and Afghanistan

BACKGROUND The North Atlantic Treaty Organization (NATO) coalition forces remain heavily committed on combat operations overseas. Understanding the prevalence and characteristics of battlefield injury of coalition partners is vital to combat casualty care performance improvement. The aim of this systematic review was to evaluate the prevalence and characteristics of battle casualties from NATO coalition partners in Iraq and Afghanistan. The primary outcome was mechanism of injury and the secondary outcome anatomical distribution of wounds. METHODS This systematic review was performed based on all cohort studies concerning prevalence and characteristics of battlefield injury of coalition forces from Iraq and Afghanistan up to December 20th 2013. Studies were rated on the level of evidence provided according to criteria by the Centre for Evidence Based Medicine in Oxford. The methodological quality of observational comparative studies was assessed by the modified Newcastle-Ottawa Scale. RESULTS Eight published articles, encompassing a total of n=19,750 battle casualties, were systematically analyzed to achieve a summated outcome. There was heterogeneity among the included studies and there were major differences in inclusion and exclusion criteria regarding the target population among the included trials, introducing bias. The overall distribution in mechanism of injury was 18% gunshot wounds, 72% explosions and other 10%. The overall anatomical distribution of wounds was head and neck 31%, truncal 27%, extremity 39% and other 3%. CONCLUSIONS The mechanism of injury and anatomical distribution of wounds observed in the published articles by NATO coalition partners regarding Iraq and Afghanistan differ from previous campaigns. There was a significant increase in the use of explosive mechanisms and a significant increase in the head and neck region compared with previous wars.

Transfusion: -80°C Frozen Blood Products Are Safe and Effective in Military Casualty Care

Introduction The Netherlands Armed Forces use -80°C frozen red blood cells (RBCs), plasma and platelets combined with regular liquid stored RBCs, for the treatment of (military) casualties in Medical Treatment Facilities abroad. Our objective was to assess and compare the use of -80°C frozen blood products in combination with the different transfusion protocols and their effect on the outcome of trauma casualties. Materials and Methods Hemovigilance and combat casualties data from Afghanistan 2006–2010 for 272 (military) trauma casualties with or without massive transfusions (MT: ≥6 RBC/24hr, N = 82 and non-MT: 1–5 RBC/24hr, N = 190) were analyzed retrospectively. In November 2007, a massive transfusion protocol (MTP; 4:3:1 RBC:Plasma:Platelets) for ATLS® class III/IV hemorrhage was introduced in military theatre. Blood product use, injury severity and mortality were assessed pre- and post-introduction of the MTP. Data were compared to civilian and military trauma studies to assess effectiveness of the frozen blood products and MTP. Results No ABO incompatible blood products were transfused and only 1 mild transfusion reaction was observed with 3,060 transfused products. In hospital mortality decreased post-MTP for MT patients from 44% to 14% (P = 0.005) and for non-MT patients from 12.7% to 5.9% (P = 0.139). Average 24-hour RBC, plasma and platelet ratios were comparable and accompanying 24-hour mortality rates were low compared to studies that used similar numbers of liquid stored (and on site donated) blood products. Conclusion This report describes for the first time that the combination of -80°C frozen platelets, plasma and red cells is safe and at least as effective as standard blood products in the treatment of (military) trauma casualties. Frozen blood can save the lives of casualties of armed conflict without the need for in-theatre blood collection. These results may also contribute to solutions for logistic problems in civilian blood supply in remote areas.

Cross-Sectional Analysis of Dutch Repatriated Service Members From Southern Afghanistan (2003–2014)

BACKGROUND A systematic analysis of the complete medical support organization of the Dutch Armed Forces regarding repatriated service members from Afghanistan has not been performed so far. METHODS All information were collated in a specifically designed electronic database and gathered from the archive of the Central Military Hospital for all Dutch service members receiving treatment for wounds or diseases sustained in the Afghan theater from July 2003 till January 2014. RESULTS Traumatic injuries were the main cause (63%, 141/223) of repatriation, and improvised explosive devices the major (67%, 60/89) mechanism of injury in the battle casualty group. The mean time between injury and medical evacuation from Afghanistan was 8 days, and this was reduced to 3.6 days in case of polytrauma casualties (ISS > 15). CONCLUSIONS Sixty percent of all Dutch medical evacuations from Afghanistan were not directly related to combat operations. A standard medical examination/endurance test in the predeployment phase could be useful as screening tool in reduction of the disease nonbattle injury casualty rate. Shorter transport intervals might improve morbidity and mortality of casualties, a timeframe of 48 to 72 hours for receiving definitive treatment seems feasible. Further research is necessary to identify delay factors and possible improvements in the medical support organization.

Review of military and civilian trauma registries: Does consensus matter?

BACKGROUND Structural collection of data from combat injuries is important to improve provided care and the outcome of (combat) casualties. Trauma registries are used in civilian and military health care systems for systematic administration of injury data. However, these registries often use different methods of data management, compromising international comparison of trauma systems. The aim of this review is to aid in reaching international (coalition-wide) consensus for compatible data collection methods with uniform definitions, which is needed for transnational research and subsequent improvement of medical support organizations. METHODS In this descriptive review, we analyzed different data sets from trauma systems within the American-European context, and included data variables from civilian and military trauma registries. These data sets were analyzed to identify a core set of variables fundamental to describing the tactical context, epidemiology, injury mechanism, injury severity, key treatment, and outcome. RESULTS A total of 1,672 unique variables, of which 536 military specific, were identified and divided in 11 elemental categories of medical care (patient info, incident info, injury diagnoses, prehospital care, emergency department, imaging, surgical treatment, intensive care, ward, discharge and outcome) and three military-specific categories (forward medical evacuation, prehospital medical treatment facility, and discharge out of theater). A total of 203 key variables were identified and considered fundamental for effective (military) trauma research. CONCLUSION Well-established and reliable trauma registries and databases are fundamental in (military) trauma care. We recommend implementation of a (concurrent) UN/NATO wide registry system with a track and follow-up system to further improve the quality of care and registration of casualties. Further research should focus on real time aids available on the battlefield and direct storage/upload in trauma databases in theater. Ultimately, sound and valid data support medical decision process and evaluation necessary to save lives on the battlefield.

Long-Term Impact of Battle Injuries; Five- Year Follow-Up of Injured Dutch Servicemen in Afghanistan 2006-2010

Objectives Units deployed to armed conflicts are at high risk for exposure to combat events. Many battle casualties (BCs) have been reported in the recent deployment to Afghanistan. The long-term impact of these combat injuries, at their five-year end point, is currently unknown. To date, no systematic inventory has been performed of an identified group of BCs in comparison to non-injured service members from the same operational theatre. Design Observational cross-sectional cohort study. Setting Open online survey among Dutch BCs that deployed to Afghanistan (2006–2010). Participants The Dutch BCs (n = 62) were compared to two control groups of non-injured combat groups (battle exposed [n = 53], and non-battle exposed [n = 73]). Main Outcome Measures Participants rated their impact of trauma exposure (Impact of Events [IES]), post deployment reintegration (Post Deployment Reintegration Scale [PDRS]), general symptoms of distress (Symptom Checklist 90 [SCL-90]), as well as their current perceived quality of life (EuroQol-6D [EQ-6D]). Also cost effectiveness (Short From health survey [SF-36]) and care consumption were assessed (Trimbos/iMTA questionnaire). Results Over 90% of BCs were still in active duty. The mean scores of all questionnaires (IES, EQ-6D, SF-36, and SCL-90) of the BC group were significantly higher than in the control groups (p<0.05). The PDRS showed a significantly lower (p<0.05) outcome in the negative subscales. The mean consumption of care was triple that of both control groups. A lower score on quality of life was related to higher levels of distress and impact of trauma exposure. Conclusions This study showed a clear long-term impact on a wide range of scales that contributes to a reduced quality of life in a group of BCs. Low perceived cost effectiveness matched with high consumption of care in the BC group in comparison to the control groups. These results warrant continuous monitoring of BCs.

Meta-analysis on the effect of hyperbaric oxygen as adjunctive therapy in the outcome of anastomotic healing of experimental colorectal resections in rats

BACKGROUND Colorectal cancer is the third most common form of cancer and colorectal surgery is the treatment of choice in local disease. Anastomotic leakage following colorectal surgery is a major complication with a high incidence and mortality. Adjuvant hyperbaric oxygen treatment (HBOT) may be associated with reduction of anastomotic leakage. A systematic review was conducted regarding HBOT as an adjunctive therapy to colorectal surgery. METHODS Systematic review (1900-2017) using PubMed, Cochrane, EMBASE, Web of Science and EMCARE. All original published studies on the effect of HBOT as an adjunctive therapy for colorectal surgery with the creation of an anastomosis were considered. RESULTS Thirteen small animal trials were included for qualitative synthesis. We found no human trials. Eleven trials used bursting pressure whilst eight used hydroxyproline levels as a marker for collagen synthesis as primary outcome to assess the strength of the anastomosis. A meta-analysis performed for normal and ischaemic anastomoses showed that postoperative HBOT improves bursting pressure and hydroxyproline levels significantly in both normal (p ≤ 0.001 and p = 0.02) and ischaemic anastomoses (p ≤ 0.001 and p = 0.04). CONCLUSION Postoperative HBOT has a positive effect on colorectal anastomoses in rats. Further research should focus on a larger systematic animal study.