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TMT Handbook: guidelines for treatment and long-term follow up of
people exposed to radiation after a malevolent act

Maria del Rosario Pérez*1, Zhanat Carr1, Makoto Akashi2, Robert N. Gent3, Patrick
Gourmelon4, Siegfried Joussineau5, Volker List6, David Lloyd3, Nelson Valverde7,
Albert Wiley8, Carlos Rojas-Palma9, Phil Kruse10
George Etherington3,Tua Rahola11, Maarit Muikku11, Astrid Liland12, Alicja Jaworska12,
Ane Jerstad12 and Genowefa Smagala13

1World Health Organization
2National Institute of Radiological Sciences (NIRS), Japan
3Health Protection Agency, United Kingdom
4Institute of Radioprotection and Nuclear Safety (IRSN), France
5Karolinska University Hospital, Sweden
6Karlsruhe Nuclear Research Centre , Germany
7Laboratory of Radiological Sciences (LCR), Brazil
8Radiation Emergency Assistance Center/Training Site (REAC/TS), United States
9Belgian Nuclear Research Centre (SCK•CEN)
10Enviros Consulting, United Kingdom
11Radiation and Nuclear Safety Authority (STUK), Finland
12Norwegian Radiation Protection Authority (NRPA)
13Central Laboratory for Radiation Protection, Poland
Abstract. Public health emergencies may be triggered in diverse scenarios including malevolent use of
radioactive material. The change in global security has shifted the focus of emergency preparedness from nuclear
accidents towards radiological terrorism scenarios. In such emergencies, members of the general public will
most likely suffer most casualties with the numbers ranging widely depending on the scenario. Radiation doses
can also range from very low to substantial life-threatening doses, and possibly combined with conventional
injuries. Despite considerable efforts made in this area, there are still some gaps in terms of providing user-
friendly tools for effective medical and public health response to such emergencies. The World Health
Organization (WHO) participates in the collaborative research project “Triage, Monitoring and Treatment (TMT)
- handbook for management of the public in the event of malevolent use of radiation” under the European FP6
programme. WHO coordinates development of the chapter on hospital phase of response and long-term follow-
up. The chapter addresses diagnosis, treatment and follow-up of acute radiation syndrome, local radiation
injuries, internal contamination, combined injuries, as well as psychological impact management. Although this
chapter is focused on actions conducted at hospital level, critical links between pre-hospital and hospital
responses are also addressed. The chapter is based on best available international guidance on health
interventions in radiation emergencies, current European consensus and relevant IAEA and WHO publications.
A wide distribution of the TMT handbook is envisaged and its incorporation into national exercise and training
programmes will be encouraged.
KEYWORDS: radiation emergency, medical and public health response, malevolent use of
radioactive material .

1. Introduction

Actual or potential major health emergencies are objects of intense public attention and debate. Health
crises may be triggered by sudden, catastrophic events as well as by complex continuing emergencies
and slow onset disasters, in many diverse scenarios e.g. natural disasters, technological disasters and
deliberate events.
In many countries, national radiation emergency response plans have long been mainly focused on
nuclear accidents. More recently, the risk of malicious use of radioactive material has shifted the
focus demanding authorities being prepared also to respond to malevolent uses of ionizing radiation,
including the probability of mass casualty events. The casualties will most likely be members of the
public where the number of affected people can widely vary according to the scenario and radiation
doses can range from very low to potentially letal, combined with conventional injuries. Radiological
attacks are mainly aimed at creating disruption and panic in society. They are more likely to give rise
to psychological consequences among public, and even among responders, if compared to other
malicious acts.
The European Commission is sponsoring a research project under the 6th EURATOM framework
called “Triage, Monitoring and Treatment - handbook for management of the public in the event of
malevolent use of radiation” (TMT project). Under the TMT project several tasks were undertaken in
six work packages aimed to develop guidance for triage, monitoring, treatment and follow-up.
2. Objectives of Work Package 4

The objectives of work package 4 (WP4), led by WHO, were to develop evidence-based practical
guidelines on:
o Treatment, health care management and long-term health surveillance of persons affected by events involving the malevolent use of ionizing radiation including acute radiation syndrome, local radiation injuries, radiological contamination and combined injuries; o Management of "worried well" persons not actually exposed to radiation or affected to an extent not requiring specific medical assistance; o Prevention and management of psychological effects.
3. Working procedure

To obtain consensus on best practice, WHO convened an expert panel which brought together the
expertise of professionals from the WHO/REMPAN network. The consultancy meeting on TMT WP4
was held with a dual purpose:
to reach consensus on medical and public health issues involved in preparedness and response to radiation emergencies resulting from malevolent acts; and to develop as far as possible an outline of that particular chapter of the TMT Handbook. The output of the consultancy was a meeting report that constituted the basis for the development of the draft chapter. The meeting report included: o A summary of the discussions conducted during working sessions on diagnosis, treatment and follow-up of victims of radiation emergencies resulting from malevolent acts. o Identified areas where consensus existed and more controversial areas requiring further o Conclusions and consensus-based generic recommendations for health interventions in radiation emergencies resulting from malevolent acts. o General recommendations on the outline of the respective chapter of the TMT Handbook. o List of relevant terms requiring harmonization and core definitions to be further included in a o List of relevant publications to be referenced and used for the Handbook development.
The expert panel identified some overlapping issues bridging pre-hospital and hospital responses and
recommended further interaction between WHO and the consortium members involved in the TMT
work package 3 (WP3), which addressed pre-hospital response. Based on that recommendation, a joint
meeting WP3/WP4 was convened to ensure harmonization and consistency between the respective
chapters.

To develop the chapter, a comprehensive literature review was conducted and existing European
guidance for health interventions, as well as related past or current European initiatives/projects (e.g.
TIARA 1 , METREPOL 2 , EBMT 3 consensus) were taken into account. Relevant international
documents on health interventions in radiation emergencies (e.g. IAEA/ WHO publications) were
referenced.

The guidelines were developed assuming that the end users for health interventions included in the
TMT Handbook may include advisory agencies with competence in emergency response, local and
national health authorities, emergency responders, general practitioners, medical and paramedical
emergency department staff.
4. Results

As part of the TMT Handbook (Chapter F) these guidelines are addressed to physicians, nurses and
other health workers who might be responsible for actions to be taken at the first referral level (i.e.
hospital response) since pre-hospital response, triage and monitoring on scene was developed under
WP3. However, some critical links between pre-hospital and hospital responses are pointed out.
Some assumptions about possible scenarios are made, for scaling-up the response as necessary.
The topic "public information and risk communication" is specifically addressed in another chapter of
the Handbook. However, the relevance of this topic in medical and public health interventions during
emergency and recovery as well as its importance for preventing/reducing psychological consequences
were particularly addressed.
The guidelines are conceived for use in hospitals with basic laboratory facilities and availability of
essential drugs and medicines. An individual (patient-based) approach is used for recommending
clinical procedures and, where appropriate, a public health (population-based) approach is also
presented.
The guidelines express an harmonized approach across the European Union and are consistent with
currently existing international guidance. Actions recommended in the chapter are evidence-based
statements to assist decisions about appropriate health interventions. In areas where clinical evidence
is limited, recommendations were based on expert criteria according with lessons identified in recent
radiation accidents.
The guidelines were structured under twelve different sections providing guidance on:
1. Notification of the incident and collection of relevant information from the field; 2. How to prepare the hospital to receive victims in radiation emergencies; 3. Arrival of victims at the hospital (transfer and admission); 4. Performing a second triage at the hospital; 5. Diagnosis and treatment of acute radiation syndrome ; 6. Management of combined injuries; 7. Diagnosis and treatment of local radiation injuries 8. Dealing with externally contaminated patients and management of radionuclide incorporation 9. Dealing with deceased victims at the hospital 10. Biodosimetry 11. Public health response 12. Prevention and management of psychological impact Guidance on the sequence of steps to sort victims of radiation emergencies is provided, including clear instructions to deal with contaminated victims in the emergency department. It is emphasized that the triage performed at the hospital should start with a conventional triage based on clinical conditions, 1 TIARA: Treatment Initiatives After Radiological Accidents 2 METREPOL: Medical Treatment Protocols for radiation accident victims 3 EBMT: European Bone Marrow Transplantation identifying levels of priority (P1 to P3) according to the level of urgency for medical intervention.
Then, the radiological triage is aimed to direct patients to the most appropriate level of medical
assistance.
A simple method for primary scoring of patients with acute radiation syndrome (ARS) is proposed,
based on the evaluation of severity and chronology of some medical parameters (signs and symptoms)
attributable to radiation exposure: erythema, asthenia, nausea, vomiting, diarrhea, abdominal pain,
headaches, temperature, blood pressure, loss of consciousness and lymphocyte count. As a result of
this second radiological triage, performed at the hospital, patients may be categorized according to
their individual medical needs (Table 1) . A therapeutic strategy for ARS is proposed according to the
clinical status of the patient (Table 2).
Table 1: Radiological triage categories
Score Condition
0
Bystanders who most probably were not exposed to radiation Irradiated patients that can be followed on an outpatient basis or by a day care hospital structure Patients needing maximum medical effort to be rescued Patients predicted to develop multiple organ failure (MOF) beyond any curative perspective Table 2: Therapeutic strategy
re-evaluation during the 1st week based on laboratory and clinical symptoms revealing (or not) irreversible organ damage or MOD/MOF Criteria to transplant: severe bone marrow aplasia persisting 14-21 days under cytokines, no residual haematopoiesis, no irreversible organ damage. Type of graft: bone marrow, peripheral stem cells, cord blood. Conditioning: fludarabine +/- antilymphocyte globulin. Don't use MTX for GVDH prevention G-CSF: granulocyte colony stimulating factor GI: gastrointestinal MOD/MOF: multiorgan dysfunction/failure MTX: methotrexate GVHD: graft vs. host disease The guidelines propose a comprehensive organ specific grading to be applied beyond the first 48h. This grading method is based on a semiquantitative categorization of patients (METREPOL) which rates the severity of signs and symptoms considering four critical organ systems: neurovascular, haematopoietic, cutaneous and gastrointestinal. The integration of elements of the four organ systems determines the response category (RC), which reflects the damage to critical organs. Based on the RC the patient may be discharged, admitted to a routine care medical/surgical floor, admitted to an intensive care unit or referred to other specialized hospital. The guidelines emphasizing that, since radiation does not cause immediate life-threatening risks, serious conventional combined injuries (e.g. burns, wounds, trauma) will take priority over concerns about irradiation and contamination. Instructions regarding surgical procedures, transfer of patients, treatment of thermal burns, stabilization of fractures and management of contaminated wounds are included. The clinical evolution of local radiation injuries4 (LRI) is described. Guidance on how to identify a skin lesion attributable to radiation exposure is provided. Main diagnostic tools are proposed and different therapeutic options are presented, including the novel approach of regenerative medicine combining dosimetry-guided surgery with autologous mesenchymal stem cell therapy. The guidelines emphasize that the treatment of severe LRI should be performed at specialized institutions. Practical guidance for general management of contaminated patients is associated with procedures for external decontamination using specific or non-specific washing solutions. Decontamination of normal skin, wounds and natural orifices is considered, with objective criteria for deciding when to stop external decontamination efforts. Principles of treating internal contamination are based on the criteria adopted by TIARA, in terms of committed effective dose assessed by bioassay. The guidelines point out that the clinical evidence about use of decorporating and blocking agents is limited. Detailed explanation is provided about the few agents that have been proven to be effective (e.g. potassium iodide, DTPA, Prussian blue) and additional information about other possible agents is provided in an annex. Blood sampling procedures for cytogenetic dosimetry are described, and recommendations about packaging and transport of blood samples are also provided. The section on public health response addresses the role of the health authorities during the emergency and provides guidance for scaling-up the response as the magnitude of the event unfolds. In emergencies with many victims it is particularly important to put into place a scheme to bring people into the health care system yet avoiding overwhelming the hospitals. This section includes instructions on how to establish and manage peripheral health care centres during radiation emergencies. Guidance on how to deal with an outbreak of an unusual disease attributable to radiation exposure is also provided. Criteria for long-term follow-up are presented in a dual approach: 1. individuals who developed deterministic effects (e.g. ARS, LRI); 2. population exposed to low radiation doses. Guidance for prevention and management of the psychological impact is presented in an explanatory rather than prescriptive text, including: How to deal with "worried well" people; 4 Cutaneous radiation syndrome (CRS) is also proposed to describe the inflammatory skin reaction associated with a particular cytokine profile observed after radiation exposure. However, following exposure to high doses of IR it is not only the skin which is involved, but also the subcutaneous tissue and even muscles and bones and for the purpose of the handbook this entity is termed as LRI. How to identify people at higher risk of developing mental health problems (e.g. children, pregnant women, mothers with young children); How to deal with acute stress reactions; How to prevent, predict and treat post traumatic stress disorder
6. Current status and next steps

The draft TMT Handbook was distributed to a wide range of end-users (radiation emergency response
organizations in the European Union and associated states), who were invited to evaluate and, if
possible, to test the handbook in their national emergency response exercises. Comments on the draft
handbook and possible experience from its use in exercises will be presented by end-users during a
Feedback Workshop. A final version of the handbook will be produced after a peer-review process.
A training course based on the TMT Handbook is scheduled for the first quarter of 2009. This course
aims to strengthening of national capability for response to malevolent acts involving a use of
radiation. The training will also offer an opportunity to identify common challenges and ways of better
harmonization of response strategies. In addition, the participants will be encouraged and expected to
promote the incorporation of the TMT Handbook into exercises and training programmes in their own
countries and disseminate it widely among national and local emergency response institutions.

7. Acknowledgements
This work was partially supported by the EC under the 6th EURATOM Contract Number FP6- 036497
8. References
BIODOSEPR-2006 MEETING: Acute dosimetry consensus committee. Recommendations on
biodosimetry applications in events involving uses of radiation by terrorists and radiation accidents
http://www.remm.nlm.gov/NewDosimetryArticleInPress.pdf
CARR Z. The role of the World Health Organization in strengthening capacity of the Member States
for preparedness and response to radiation emergencies. Acta Med Nagasaki, 50: 37-40 (2006).
GORIN NC, FLIEDNER TM, GOURMELON P. et al. Consensus conference on European
preparedness for haematological and other medical management of mass radiation accidents. Ann
Hematol 85:671-679 (2006).
Guidebook for the Treatment of Accidental Internal Radionuclide Contamination of Workers. Radiat
Prot Dosim 41 no. 1 (1992).
INTERNATIONAL ATOMIC ENERGY AGENCY and WORLD HEALTH ORGANIZATION,
EPR-medical Medical generic procedures for medical response during a nuclear or radiological
emergency, IAEA, Vienna (2005).
ICRP Publication 96: Protecting People Against Radiation Exposure in the Event of a Radiological
Attack. Edited by Jack Valentin; and International Commission on Radiological Protection . ISBN
0080446256 · Elsevier (2005).
LATAILLADE J, DOUCET C, BEY E et al. New approach to radiation burn treatment by dosimetry-
guided surgery combined with autologous mesenchymal stem cell therapy. Regenerative Medicine
2/5):785-794 (2007).
MENETRIER F., BERARD PH. JOUSSINEAU S. et al TIARA: Treatment Initiatives After
Radiological Accidents. Rad Prot Dosimetry 127(1-4): 444-448 (2007).
MENETRIER F., BERARD PH. JOUSSINEAU S. et al Dose Assessment of Inhaled Radionuclides in Emergency Situations. Edited by Health Protection Agency (2007). METTLER F. , GUSKOVA A., GUSEV I (Eds) Medical Management of Radiation Accidents, 2nd Edition, University of New Mexico, Albuquerque, New Mexico (2001). METREPOL compendium of the manual "Medical management of radiation accidents: manual on the acute radiation syndrome"(2001). Radiation Event Medical Management: Guidance on Diagnosis & Treatment for Health Care Providers. U.S. Department of Health and Human Services; Office of the Assistant Secretary for Preparedness and Response. http://www.remm.nlm.gov RICKS, RC, BERGER, ME, O’HARA, FM. (Eds) The medical Basis for Radiation Accident Preparedness; Clinical Care of Victims. Eds. NY: Parthenon (2002). WHO https://www.who.int/ionizing_radiation/a_e/emergencies/WHO_stockpile_report_2007.pdf. WOOD R. ET AL Decorporation Treatment - Medical Overview. In Decorporation of Radionuclides from the Human Body. Radiat Prot Dosim 87 no. 1, 51-57 (2000).

Source: http://irpa12.org.ar/fullpapers/FP0464.pdf

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