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Overview. Nuclear Scenario EffectsRadiation InjuryAcute Radiation SyndromeExternal ContaminationInternal ContaminationSummary. Potential Nuclear/Radiological Hazards in the U.S.. Simple Radiological Device
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1. In-Depth Medical Management for Nuclear/Radiological/Conventional Terrorism Agents Editorial Board
Fun Fong, MD, FACEP, Senior Medical Officer GA-3 DMAT, ACEP Section of Disaster Medicine
Cham E. Dallas, Ph.D. , Professor & Director, Interdisciplinary Toxicology Program and Center for Leadership in Education and Applied Research in Mass Destruction Defense, University of Georgia
Lorris G. Cockerham, Ph.D., DABFE, Lt. Col. (ret) USAF,
Former Division Chief, Armed Forces Radiobiology Institute
2. Overview Nuclear Scenario Effects
Radiation Injury
Acute Radiation Syndrome
External Contamination
Internal Contamination
Summary
3. Potential Nuclear/Radiological Hazards in the U.S. Simple Radiological Device
“Dirty” Conventional Bomb (RDD)
Improvised Nuclear Device (IND)
1kT backpack bomb
Terrorist Nation Ballistic Missle Attack
300 MT Bomb 100 mi over Kansas for EMP
4. Diversion of Nuclear Weapons 50 - 100 1 kT Suitcase Nuclear Weapons Unaccounted For
5. Energy Partition
9. Scenario: Washington Mall
10. Effective Range For Blast Energy1 kT Weapon
11. Effective Range For Blast Energy1 kT Weapon
12. Effective Range For Thermal Energy1 kT Weapon
13. Safe Separation Distances for Eye Injuries1 kT Weapon
14. Overview Conventional Weapon Terrorism Not a Scenario: weapons of choice world-wide
Small arms, manufactured ordnance, & improvised
5 criminal bombings daily in US
>> 99% of all terrorist attacks
Small Arms – high- and low-velocity
Ordnance – military weapons-grade
High-order explosives = overpressure blast wave
Improvised Explosive Devices (IEDs)
Hand-made or extemporized, 75% low-order explosives
Minimal blast wave, more survivable burns
More injuries, fewer fatalities vs. ordnance
15. Overview Conventional Weapon Terrorism Lessons learned from prior wars can not be easily applied
Terrorist weapons target non-combatant with varied demographics
Civilians have inconsistent preparation, protection, and access to acute- and long-term physical care and behavioral support
Similarities with radiological weapon injuries supports cross-preparedness for both
Ordnance over-pressurization injuries will be similar to injuries from nuclear devices
Both IEDs and nuclear devices can produce substantial thermal injuries
Dirty grossly contaminated wounds will be the rule rather than the exception
16. Take-home Message: Local Preparedness for the Conventional Weapon Threat Avoid Primary Wound Closure
Delayed primary closure of contaminated wounds is critical for optimal outcome for individual victim
Establish Regional Systems of Trauma Care
Inclusive systems of organized and coordinated trauma care from scene to rehabilitation if needed.
Expedited emergency transfers and referrals
Critical for the optimal outcome of the community
Right patient to right hospital in right amount of time
Immediate benefit to the community
17. What is Fallout? A complex mixture of over 200 different isotopes of 36 elements
2 oz of fission products formed for each kT of yield.
Size < 1 micron to several mm.
18. Early Fallout That which reaches the ground during the first 24 hours after detonation
Early fallout fraction 50-70% of total radioactivity
19. Delayed Fallout Arrives after the first day, very fine invisible particles which settle in low concentrations over a considerable portion of the earth’s surface
40% of total radioactivity
20. Bikini Atoll (1 Mar 1954) 15 MT Thermonuclear Detonation Fallout
Population Affected: 300 in Public Domain
Int / Ext Contamination
Local Radiation Injury
Mild ARS
Thyroid Injury
21. Ionizing Radiation
23. Acute Radiation Syndrome Systemic Effects of Radiation:
Prodromal
Hematologic
Gastronintestinal
Pulmonary
Cutaneous
Neurovascular
Combined Injury
24. Prodromal Component(0.5 - 3 Gy and higher) Immediate Effect of Cell Membrane Damage
Mediated by Inflammatory Elements of Cell Destruction
Mediated Neurologically by the Parasympathetic System
25. Gastrointestinal Component(8 - 15 Gy and higher) Symptoms
Mechanisms
Stem Cell Sterilization - 15 Gy
26. Respiratory Component(5 - 310 Gy and higher) Sensitive from Highly Vascular Tissue
Endothelial Cells
Type II Alveolar Cell
Effect is dose-rate related
Pneumonitis
Fibrosis
27. Radiation Skin Injury .75 Gy - Hair Follicles Change
3 Gy - Epilation
6 Gy - Erythema
10 Gy - Dry Desquamation
20 Gy - Wet Desquamation (Transepithelial Injury)
33. Distribution of Injuries in aNuclear Detonation
34. Neurovascular Component 1 - 6 Gy - Glial cell damage
10 Gy - Morphologic changes
10 - 20 Gy - Vascular lesions
40 Gy - White matter necrosis
60 Gy - Demyelinization
35. Summary of Deterministic Effects
36. Hemogram(300 cGy TBI Exposure)
38. Andrews Lymphocyte Nomogram Absolute Lymphocyte Count over 48 hours
Confirms Significant Radiation Exposure
40. Priorities in Combined-Injury Triage When Radiation Doses are Known
41. Surgical Recommendations Based on Immunocompetence Status
Life-Saving / Major Surgery within 36 - 48 h
Elective Procedures until 45 - 60 days Following Hematopoietic Recovery
42. Hot | Warm | Cold Zones
43. Terrorism Modification of Hot Zone Larger Secured Hot Zone
Casualty Collection Point in Safe Area
Clean / Contaminated Staging Areas
44. Decontamination Equipment Hospital Surgical Gown (waterproof)
Cap, Face Shield, Booties (waterproof)
Double Gloves (inner layer taped)
Pencil Dosimeters, TLDs, Survey Meters
Drapes
Plastic Bags
Butcher Paper
Large Garbage Cans
Radiation Signs and Tape
45. Decontamination Team Provider (RN / PA / MD)
HP Tech
Decon Assistant (ED Tech)
Circulator
Scribe Nurse
HP Tech #2
46. Decon Agents - 1 Dry Removal
Soap / Shampoo
Household Bleach 1:10 (Sodium Hypochlorite)
Waterless Cleansers
47. Decon Agents - 2 Povidone-Iodine
Lava Soap
Cornmeal / Tide 50:50
Vinegar ( 32P ) or Club Soda
Toothpaste
48. When Do I Stop? When No More Comes Off!
Stop Levels:
1 mR / h beta
1000 dis / min alpha (air proportional counter w / 60cm2 Window)
If Committed Dose will Not Exceed 15 rem / yr to Skin
Isolate w / Bag & Continue Decon Next Day
49. Mass Casualty Planning Relies on Avenues of Self-Decon
More than Finding Shower Facilities
50. Treat the Patient before the Poison
Prevent or Reduce Exposure
Enhance the Elimination of the Agent
Consider Specific Adjuncts and Antidotes 4 Golden Rules of Toxicology
51. The Dose makes the Poison
Acute (Threshold Effects)
Long-Term Toxicity
ALI / MPBB
< 1 ALI - No Treatment Necessary
1 - 10 ALI - Consider Short-Term Tx
> 10 ALI - Treatment Radiation Accidents can Pose Toxicology Problems
52. Internal Contamination Involves 4 Stages Deposition Along Route of Entry
Translocation
Deposition in Target Organ
Clearance
53. Schematic Model of Radionuclide Uptake(After Voelz)
54. RN Therapeutic Interventions Plutonium / Transuranics - DTPA
Cesium - Insoluble Prussian Blue
Uranium - Alkalinization of Urine
Radioiodine - Radiostable Iodine
Tritium - Radiostable Water
Fission Products (Fallout) - Combination
55.
Retention
Organ Control DTPA Treated
Liver 14% 0.47%
Skeleton 57.0% 5.9%
DTPA Administered for Soluble 239Pu Within One Hour
56. Insoluble Prussian Blue Effective for Cs-137 Binds Ions in the Gut
Biological Half-Life Reduced to 1/3
Not Systemically Absorbed
Side Effects - Constipation, GI Upset at Higher Doses (20 g / day)
57. Uranium - Alkalinize Urine 235U - 186 keV Gamma
Eff Half Time Depends on Solubility
At Normal Enrichment Levels, Primary Renal Toxicity
Maintain Urine pH 7.5 to 8
Use Bicarbonate tablets (Do not use Alka Seltzer from old texts!)
Use Supplimental KCl tablets to maintain alkaline diuresis
58. Iodine / Technetium - Block 131I - Eff Half Life = 7.6 days
99mTc - Eff Half Life = 1 day*
Treat within 4 Hours ( Best 1 Hour Before Exposure! )
KI or NaI 300 mg tablet
SSKI (1 g / ml) - 5 - 6 drops in water
Povidone Iodine Theoretically Useful
59. Tritium - Dilute Beta Emitter - 5.7 keV (18 keV Max)
2% Binds to Cellular Components
Essentially Occupies TBW Space
Force Fluids 3 - 4 L / day
Reduces Half-Time by 1/3 - 1/2
60. Radiostrontium Contamination Therapy Al Phosphate (100 ml) Reduces Absorption as much as 85%
Ba Sulfate
Na Alginate Inhibits Uptake by Factor 8 - 10
10 g po
Ca Competes with Sr given po / IV
Ammonium Chloride po provides Synergy for max effect
61. Fission Products (Fallout)from Safety Series 47 Wounds – Apply potassium rhodizonate (1 g)
Inhalation / Ingestion - Calcium Alginate (10 g)
Potassium Iodide (130 mg)
Prussian Blue (1 g)
DTPA (1 g)
62. Radiation Accident Medical Response - Individual Data-Gathering
Resource Management
Contamination Control
Medical Care ( Compromised? )
Radiation Toxicity Issues
Contamination Issues
Systemic Issues
Toxicological Issues
Disposition Issues
63. Radiation Accident Medical Response - Large Scale Establish Credibility of Incident
Health Physics Support for Dose Estimates
Contamination Precautions
Assess Patients for Systemic Effects
Determine Need for Decorporation Therapy
Record Patient Data for Follow-up
64. Lessons Learned
65. All that is Necessary for the Triumph of Evil
66. References - 1 Walker RI, Cerveny TJ Eds., Medical Consequences of Nuclear Warfare, TMM Publications, Falls Church, 1989.
Brill AB Ed: Low Dose Radiation Effects: A Fact Book, New York, Society of Nuclear Medicine 1982; p1-5.
Kathren RL Ed: Principles and Application of Collective Dose in Radiation Protection, NCRP Report 121. Bethesda MD, National Council on Radiation Protection and Measurements, 1995; p65.
"Nonstochastic Effects of Ionizing Radiation," Annals of the ICRP , ICRP Publication 41. New York, Pergamon Press, 1984;p.2.
After REAC/TS Videotape - Hospital Management of Radiation Accidents, Oak Ridge, TN, Oak Ridge Associated Universities, 1980.
Wheater RH Ed: A Guide to the Hospital Management of Injuries Arising from Exposure to or Involving Ionizing Radiation. Chicago, American Medical Association, 1984; pp.4-5.
67. References - 2 Mettler FA, Ricks RC Medical Management of Radiation Accidents. Contemp Diag Radiol 1982,5:8;p1.
Agency for Toxic Substances Disease Registry (ATSDR). Managing Hazardous Materials Incidents, Vol. I-III. US Dept. Of Health and Human Services, 1992.
Mettler FA, Kelsey, Ricks RC Eds: Medical Management of Radiation Accidents. Boca Raton, FL, CRC Press, 1990.
The Radiological Accident in Goiânia, Vienna, IAEA, 1988; p.2.
Saenger, E.L., Andrews, G.A., Linnemann, R.E., Wald, N., Radiation Accident Preparedness, Medical and Managerial Aspects, Science-Thru-Media, Inc., New York, NY, 1981.
Nishiyama H, Lukes SJ, Saenger EL: Low-Level Internal Radionuclide Contamination: Use of Gamma Camera for Detection. Radiol 1984 150:1, pp 235-40.
68. References - 3 Nishiyama H, Saenger EL, Grossman LW, Lukes SJ. Accidental Cs-137 Contamination. Radiol 1985 154:2, pp 513-7.
Voelz G Ed: Management of Persons Accidentally Contaminated with Radionuclides, NCRP Report 65. Bethesda MD, National Council on Radiation Protection and Measurements, 1980.
Gerber GB, Thomas RG Eds:"Guidebook for the Treatment of Accidental Inernal Radionuclide Contamination of Workers" Radiation Protection Dosimetry (1992) 41:1.
Barabanova A. REAC/TS Newsletter. Winter 1992, Oak Ridge, TN, p 1-2.
Andrews GA, Auxier JA, Lushbaugh CC, "The Importance of Dosimetry to the Medical Managment of Persons Accidentally Exposed to High Levels of Radiation," in Personnel Dosimetry for Radiation Accidents, International Atomic Energy Agency (IAEA), Vienna, pp 3-16, 1965.
69. References - 4 Roberts GB, Col - “Nuclear Weapons-Grade Fissile Materials - The Most Serious Threat to US National Security Today?” Airpower Journal, Special Edition 96
Academy of Health Sciences, US Army “Medical Aspects of Nuclear Weapons and Their Effects on Medical Operations” subcourse MED447, Jun 1990
Aldridge JP “The Role of Health Physicists in Contemporary Radiological Emergency Response” Master’s Thesis, Georgia Tech, Mar 1998
The Threat of Nuclear Diversion. Statement for the Record by John Deutch, Director of the Central Intelligence to the Permanent Subcommittee on Investigations of the Senate Committee on Government Affairs, 20 Mar 1996.