This standard specifies the diagnostic criteria and treatment principles for occupational acute methanol poisoning. This standard applies to the diagnosis and treatment of occupational acute methanol poisoning. GBZ 53-2002 Occupational Acute Methanol Poisoning Diagnostic Criteria GBZ53-2002 Standard download decompression password: www.bzxz.net

ICS13.100
National Occupational Health Standard of the People's Republic of China GBZ 53-2002
Diagnostic Criteria of Occupational Acute Methanol PoisoningPublished on April 8, 2002
Implemented on June 1, 2002
Ministry of Health of the People's Republic of China
Article 6.1 of this standard is recommended, and the rest are mandatory. This standard is formulated in accordance with the "Law of the People's Republic of China on the Prevention and Control of Occupational Diseases". From the date of implementation of this standard, if the original standard GB16373-1996 is inconsistent with this standard, this standard shall prevail. Acute poisoning may occur after short-term exposure to a large amount of methanol in occupational activities. In order to protect the health of the exposed, GB16373-1996 was issued. This standard is a revised version. Appendix A of this standard is an informative appendix, and Appendix B is a normative appendix. This standard is proposed and managed by the Ministry of Health of the People's Republic of China. This standard was drafted by Liaoning Provincial Institute of Occupational Disease Prevention and Control and Shanghai Center for Disease Control and Prevention, and the First Affiliated Hospital of Chongqing Medical University, Lanzhou Chemical Industry Company Staff Hospital, and Sichuan Yibin District Health and Epidemic Prevention Station participated in the drafting. The Ministry of Health of the People's Republic of China is responsible for interpreting this standard. ..comDiagnostic criteria for occupational acute methanol poisoning
GBZ53-2002
Occupational acute methanol poisoning is a systemic disease caused by exposure to methanol during production or use, with central nervous system damage, eye damage and metabolic acidosis as the main symptoms. 1 Scope
This standard specifies the diagnostic criteria and treatment principles for occupational acute methanol poisoning. This standard applies to the diagnosis and treatment of occupational acute methanol poisoning. 2 Normative references
The clauses in the following documents become the clauses of this standard through reference in this standard. For all dated referenced documents, all subsequent amendments (excluding errata) or revisions are not applicable to this standard. However, parties to an agreement based on this standard are encouraged to study whether the latest versions of these documents can be used. For any undated referenced document, its latest version shall apply to this standard.
3 Diagnostic Principles
Diagnostic Criteria for Occupational Acute Chemical Toxicity Neurological Diseases Based on the history of occupational exposure to higher concentrations, after a short incubation period, typical clinical symptoms and signs appear, combined with laboratory tests, comprehensive analysis, and exclusion of other similar diseases, a diagnosis can be made. Observation Objects
After exposure to methanol, symptoms such as headache, dizziness, fatigue, blurred vision, and irritation of the eye and upper respiratory tract mucosa appear, and they recover within a short time after being out of contact. 5 Diagnosis and classification standards
5.1 Mild poisoning
Any of the following can be diagnosed as mild poisoning: Mild impaired consciousness:
b) Optic disc congestion, optic disc retinal edema or central or paracentral scotoma in visual field examination; c) Mild metabolic acidosis
5.2 Severe poisoning
Any of the following can be diagnosed as severe poisoning: a) Severe impaired consciousness;
b) Sharp decrease in vision, even blindness or optic nerve atrophy; c) Severe metabolic acidosis.
Treatment principles
Treatment principles
6.1.1 Immediately leave the scene, decontaminate, and give appropriate supportive treatment and symptomatic treatment. Correct acidosis Blood or peritoneal dialysis to remove absorbed methanol and its metabolites. Indications for hemodialysis therapy are: a) Blood 6.1.2
Methanol>15.6mmol/L or formic acid>4.34mmol/L; b) Severe metabolic acidosis; c) Severe visual impairment or papillary retinal edema.
6.2 Other treatments
Mild poisoning can be restored to the original work after recovery. Severe poisoning should be properly treated and transferred from harmful work according to clinical conditions. Instructions for the correct use of this standard
See Appendix A (Informative Appendix) and Appendix B (Normative Appendix). ..comAppendix A
(Informative Appendix)
Instructions for the correct use of this standard
A.1 This standard applies to occupational acute methanol poisoning. 2 Early poisoning is easily misdiagnosed as cold, pharyngitis, neurasthenia or acute gastroenteritis, etc., and differential diagnosis should be noted A.2
3 For the classification criteria of consciousness disorders, please refer to Appendix D of GBZ76. A.3
For severe cases, measures should be taken to reduce the internal pressure in order to improve the blood circulation of the eye and prevent damage to the optic nerve. Appendix B
(Normative Appendix)
Requirements for ophthalmic examination
B.1 Check the visual acuity and external eye as usual, and stick a small amount of 0.5% fluorescein in the conjunctival sac with a glass rod, then rinse with normal saline, and observe whether there is damage to the corneal epithelium under a slit lamp microscope. The size of the pupils of both eyes and changes in light response should be observed under natural light. B.2
B.3 Use an ophthalmoscope to examine the fundus of both eyes, paying attention to changes in the color of the optic disc and retina, the presence of edema, and the filling of blood vessels. bzxz.net
Use a plane perimeter to carefully check for central or subcentral dark spots. Generally, 2mm white and red sight marks are used for examination, and 1~3mm sight marks can also be used. Use an arc perimeter to check the peripheral visual field with 5mm red and white sight marks respectively..com
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