cleaning ( acute inhalational injury rads )
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Cleaning ( Acute Inhalational Injury RADS ). Prof. Metin Gorguner Atatürk University Medical Faculty Department of Pulmonary Diseases [email protected]. Terminology *. Cleaning Cleaning Worker Cleanliness Clean. * T.L.F. Dictionary. Cleaning Industry. - PowerPoint PPT PresentationTRANSCRIPT
Prof. Metin Gorguner
Atatürk University Medical FacultyDepartment of Pulmonary Diseases
Terminology*Terminology*
• Cleaning• Cleaning Worker• Cleanliness• Clean
* T.L.F. Dictionary
Cleaning IndustryCleaning Industry
Cleaning Agents and Other Household Products
Inhaled Toxic SubstancesInhaled Toxic Substances• Gas• Aerosol
– Stable suspended solid or liquid particles with in gas environment
• Vapor– Gas condition of solid or liquid
substances in normal• Fume
– Solid particles aerosol < 0,1 m• Duman
– Volatile gas or particles formed by burning
Inhalation of Toxic Inhalation of Toxic SubstanceSubstance
inhalation of toxic substance
chronic pulmonary disease
systemic diseasesudden respiratory
distress
pathologic changes developing with in seconds
Factors Affecting ToxicityFactors Affecting Toxicity
• Particles diameter• Solubility in water• Consantration• Exposure time• Ventilation• Personal characteristics
– Age, cigarette, comorbid disease, prevention, genetic predisposition
Most Important FactorsMost Important Factors
solubility in water particles diameter
region of damage – heavy of damage
Characteristics of Solubilitiy in Characteristics of Solubilitiy in Water Water
High Solubility in WaterHigh Solubility in Water
sudden onset of symptoms
excitement of irritant receptors
environment away from or exposition source of deactivation
bronchospasm
prevention of distal transition of toxic substance
Low Solubility in WaterLow Solubility in Water
no irritation
prolonged exposure time
not removed from the environmentno bronchospasm
increased exposure amount
Particles DiameterParticles Diameter
Localization – DamagesLocalization – Damages
• Upper airways– Acute– Chronic
• Conducting airways– Acute– Chronic (RADS, Vocal cord dysfunction)
• Distal airways - parenchymal– Acute– Chronic (BO, BOOP)
Upper AirwaysUpper Airways
• Sudden and short-term toxic effect• Typical symptoms
– Burning in throat– Sticky mucus– Cough and sneeze
• Extrapulmonary symptoms– Burning eyes– Headache and dizziness
Upper AirwaysUpper Airways
• Most important risk: airway obstruction– Reflex laryngospasm or bronchospasm– Mucosal edema– Increased secretion– Epithelial damage
• If hoarseness or stridor;– Careful observation in terms of respiratory insufficiency
• Non-sequelaous improvement in general
Conducting AirwaysConducting Airways
• Acute Damage– Epithelial damage like upper airways– Life-threatening edema, inflammation,
bronchospasm– Wheezing, reduction in air flow with PEF-meter or
spirometer, abnormal chest X-ray, dyspnea, chest tightness
Conducting AirwaysConducting Airways
• Chronic damage
– Vocal Cord Dysfunction
– Reaktif Airway Dysfunction Syndrome (RADS)
Distal Airways - Distal Airways - ParenchymalParenchymal
• Acute damage– Cellular toxicity increased alveolo-capillary
membran permeability ARDS– Typically; a latent period after the first exposition– Minimum 24 hours of observation period should
be done in terms of respiratory distress
Slight dyspneaCough ARDS
Distal Airways - Distal Airways - ParenchymalParenchymal
• Chronic damage– BO (Bronchiolitis obliterans)
– BOOP (Bronchiolitis obliterans organized pneumonia)
• Work related asthma
Mesleksel HastalıkMesleksel Hastalık
1. SKIN
2. RESPIRATORY SYSTEM
1. Airway disease
2. Parenchymal disease
3. Pleural disease
AHR
Variant• Industrial bronchitis• Asthma-like syndrome
Persistent
Work Related AsthmaWork Related Asthma
WORK RELATED ASTHMA
Work Exacerbated Asthma
Work Exacerbated Asthma
Occupational Asthma
Occupational Asthma
Occupational AsthmaOccupational Asthma
Immunological (IgE)
Non-immunological
High Molecular Weight
Low Molecular Weight
Non-immunologicalNon-immunological
• İrritants “İrritant induced asthma”– Multiple exposure– Single exposure (RADS)
• Organic dusts and microbial agents “Asthma-like syndrome”
Mapp CE, et al. Occupational Asthma AJRCCM 2005
Work Related AsthmaWork Related Asthma
Population Attributable RiskPopulation Attributable Risk
• Population attributable risk (PAR) for asthma due to occupational exposures: median 15 %
(21 studies: 4% to 58%)
Balmes J, et al. AJRCCM 2003
Asthma and Cleaning Asthma and Cleaning AgentsAgents
• In female cleaners• Use of bleach • Reported inhalation incident• Use of cleaning sprays
High risk of asthma
Karjalainen et al. ERJ 2002, Medina-Ramon et al. OEM 2005, Zock et al. AJRCCM 2007
• 43 female cleaners with recent history of asthma and/or chronic bronchitis
• 2-week diary (symptoms, PEF 3/d, exposures)• Upper respiratory symptoms:
– no association with exposure
• Lower respiratory symptoms: associations with;– exposure to bleach (O.R. 2.5)– degreasing sprays (O.R. 2.6) – air refreshing sprays (O.R. 6.5)
Medina-Ramon et al. OEM 2005
• USA (CA, MA, MI, NJ), 1993 – 1995 • SENSOR (Sentinel Event Notification System for Occupational Risks) program• Work related RADS (123 cases)• 18 (15 %) of the RADS cases• Most common class of agents was cleaning materials
Henneberger PK, et al. J Occup Environ Med 2003
Reactive Airways Dysfuntion Reactive Airways Dysfuntion SyndromeSyndrome
• 10 clinical case;– Önceden solunum sistemi semptomu olmayan– Yüksek düzeyde kimyasal iritana maruziyet sonrası
dakikalar-saatler içerisinde solunumsal semptomlar
– Persistan astım (>1yıl): öksürük, vizing, dispne, FEV1’de , havayolu aşırı duyarlılığı
– Biyopside nonspesifik havayolu inflamasyonu
• Re-maruziyet yokBrooks SM, et al. Reactive airways dysfunction syndrome (RADS). Chest 1985
• Acute inhalational damage • after• new onset • asthma
Brooks SM, et al. Reactive airways dysfunction syndrome (RADS). Chest 1985
Reactive Airways Dysfuntion Reactive Airways Dysfuntion SyndromeSyndrome
RADS-PathophysiologyRADS-Pathophysiology
Epithelial Damage
Inflammation
AHR
Inflammation – RemodellingInflammation – Remodelling
Acut Period
Chronic Period
RADS – RADS – Criteria for DiagnosisCriteria for Diagnosis
1. Absence of preceeding respiratory complaints2. The oncet of symptoms occured after a single
spesific exposure3. The exposure was to a gas, smoke, fume which was
present in very high concentrations4. The onset of symptoms occurred within 24 hours5. Symptoms persisted for at least 3 months6. Symptoms simulated asthma (cough, wheezing,
dyspnea)7. Pulmonary function tests may show airflow
obstruction8. Positive Methacholine/histamine challenge testing9. Other types of pulmonary diseases were ruled out
Brooks SM, et al. Reactive airways dysfunction syndrome (RADS). Chest 1985Nemery B, Leuven – 2009
Substances that can make Substances that can make RADSRADSAcetic acid Diesel fuel Spray paint
Sulfuric acid Diethilaminethanol Sulfur dioxide
Chloridric acid Epichlorohydrine Gas (chlorine, mustard, phosgene)
Heated acid Ethylene oxide Fire smoke
Ammonia Isocyanates Grouting
Laundry bleach Metal cleaners Formalin
Chlorine Oxyde Spray Cleaner
Chloropicrine Heated paint Hydrazine
Cleaning supplies Phthalic anhydride
• Inhalation accidents and RADS occuring;– Workplace
• Petrochemistry, fire-fighting, industrial cleaning
– Home• Indoor cleaning*
– Daily life• Transportation accidents• Fire & Explosion
* Akkoçlu, A., et al. The effect of hydrochloric acid and hypochlorite as the cause of RADS Dokuz Eylul Univ. Med. J. 1990
BleachBleach – – Hydrochloric Acid MixtureHydrochloric Acid Mixture
Gorguner M, et al. Inhal Toxicol 2004
Gorguner M, et al. Inhal Toxicol 2004
• A lower age, higher initial PEFR, higher initial paO2, • Exposure in the kitchen or bathroom, • Exposure after waiting 10–15 min after mixing the
solutions • Shorter duration of the acute exposure• Less long-term use of the mixture
were associated with a better response to therapy• Smoking status was not related to differing responses to treatment
Gorguner M, et al. Inhal Toxicol 2004
TreatmentTreatment
• Prevention is more important• Treated like asthma when sypmtoms develop• Steroid therapy in early stage can prevent
RADS do ? • Nebulized Sodium-Bicarbonate treatment
Nebulize Sodyum – Nebulize Sodyum – Bikarbonat Bikarbonat
Kandiş H, et al. Inhalation Toxicology 2006
Sodium – Bicarbonate Sodium – Bicarbonate TreatmentTreatment
• 44 patients• Patients were divided into two groups• Bronchdilator + steroid given to all• In addition; nebulized 4,2 % sodium
bicarbonate solution given to one group (NSB), and placebo to other group (NP)
Kandiş H, et al. Inhalation Toxicology 2006
• In NSB group;– NSB group had
significantly higher FEV1 values (p<0,05)
– Significantly more improvement in QoL questionnaire scores occurred in the NSB group (p<0,01)
Kandiş H, et al. Inhalation Toxicology 2006
Thank you for your attention…