Some standard content:
ICS13.100
National Occupational Health Standard of the People's Republic of China GBZ56-2002
Diagnostic Criteria of Byssinosis2002-04-08 Issued
2002-06-01 Implementation
Ministry of Health of the People's Republic of China
Article 5.1 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 GB16376-1996 is inconsistent with this standard, this standard shall prevail. Long-term occupational exposure to cotton dust, hemp and other plant dusts can cause byssinosis characterized by respiratory obstruction. This standard is formulated to protect the health of the contactors and effectively prevent and treat byssinosis. Appendix A of this standard is an informative appendix, and Appendix B and C are normative appendices. This standard is proposed and managed by the Ministry of Health of the People's Republic of China. This standard was drafted by the Institute of Occupational Health and Poison Control of the Chinese Center for Disease Control and Prevention, and was drafted by the Beijing Institute of Labor Health and Occupational Diseases, the Heilongjiang Institute of Labor Health and Occupational Disease Prevention and Control, and the Tianjin Institute of Occupational Disease Prevention and Control. The Ministry of Health of the People's Republic of China is responsible for interpreting this standard. ..com Diagnostic criteria for byssinosis
GBZ56-2002
Byssinosis is a respiratory obstructive disease caused by long-term exposure to cotton, hemp and other plant dusts, with characteristic symptoms such as chest tightness and/or chest tightness, shortness of breath, and acute decreased ventilation function. Long-term repeated attacks can cause chronic ventilation function damage.
1 Scope
This standard specifies the diagnostic criteria and treatment principles for byssinosis. This standard applies to the diagnosis and treatment of byssinosis. 2 Diagnostic principles
Based on the occupational history of long-term exposure to cotton, linen and other plant dusts, characteristic respiratory symptoms and acute or chronic pulmonary ventilation function damage, combined with on-site labor hygiene surveys, and excluding obstructive respiratory diseases caused by other reasons such as smoking, a diagnosis can be made.
3 Observation subjects
Occasionally, there are characteristic respiratory symptoms such as chest tightness and/or chest tightness, shortness of breath, and a decrease in the first second forced vital capacity FEV1.0, but the decrease after the work shift is no more than 10% compared with the pre-work shift. 4 Diagnosis and classification standards
4.1 Byssinosis Grade I
Characteristic respiratory symptoms such as chest tightness and/or chest tightness, shortness of breath, etc. often occur on the first day of work after work or several days during the work week. FEV1.0 decreases by more than 10% after the work shift compared with the pre-work shift. 4.2 Grade I byssinosis
Respiratory symptoms continue to worsen, accompanied by chronic ventilation impairment, FEV1.0 or forced vital capacity FVC is less than 80% of the expected value.
Treatment principles
Treatment principles
Follow the treatment principles of obstructive respiratory diseases, with symptomatic treatment as the main approach. 5.2 Other treatments
5.2.1 The subjects should undergo regular health examinations to observe changes in their condition. 5.2.2 Grade I byssinosis patients should receive symptomatic treatment and be transferred from dusty jobs if necessary. 5.2.3 Grade I byssinosis patients should be transferred from jobs involving contact with cotton, hemp and other plant dusts, and receive symptomatic treatment. 6 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 byssinosis caused by long-term exposure to plant dust such as cotton, flax, and soft hemp, such as spinning, cotton fluffing, felting, and velveting. It does not include "mill fever" and "weavers cough" caused by first exposure to plant dust such as cotton and flax. A.2 According to domestic and foreign data, the length of service for the onset of byssinosis is generally more than 10 years. In some cotton fluffing and felting factories, due to poor cotton quality and high dust concentration, the length of service for the onset can also be around 4 years. Workers who have experienced "cotton fever" are prone to byssinosis, which is of reference value for diagnosis.
A.3 Symptom inquiry should use the standardized questionnaire in Appendix B, and experienced doctors should ask questions one by one. Those with a positive medical history should be asked again after a period of time to ensure the reliability of the results. A.4 Characteristic respiratory symptoms refer to a feeling of chest tightness and/or chest distress, shortness of breath caused by airway obstruction that starts at a specific time, and may be accompanied by coughing and a small amount of sputum. The symptoms usually begin a few hours after work on the first workday after a break, but as the disease progresses, they may occur on other workdays besides the first workday. A.5 The typical respiratory symptom is a feeling of chest tightness, but the workers may express their complaints in different ways, such as chest distress, chest pressure, shortness of breath, chest discomfort, and breathlessness. A.6 Those with reduced lung function should be followed up, repeatedly measured, and comprehensively evaluated. A.7 The predicted value of ventilation function is calculated using the predicted value calculation formula for the local population of this laboratory. ..com Name
Date of Birth
Correspondence Address
Occupational History
Start and End Date
Appendix B
(Normative Appendix)
Questionnaire for Respiratory Symptoms of Workers Exposed to Cotton and Hemp Dust Table B1
Do you often cough when you wake up in the morning or get up? cm
Questioning Time
Subtotal of Length of Service
Year, Month/12
Questioner
Dust Concentration
Dust Exposure
mg·Year
(Including the first time you coughed while smoking and the first time you coughed while walking outdoors, and one or two occasional coughs when clearing your throat are not counted: "often" means 5 days or more per week).
Do you often cough during the day or at night?
(If you answer "no" to both 1 and 2, ask 6) Do you have this cough most of the time for three months or more each year? 3.
(If you answer "yes", ask 4; if you answer "no", ask 6)
4. How many years have you been coughing like this?
Is your cough worse in winter?
Do you always cough on a particular day during the work week? (If you answer "yes", ask 6a; if you answer "no", ask 7)
6a. Which day?
First, second, third, fourth, fifth, sixth day after a break: not fixed (make a "V" at the corresponding place) Expectoration
Do you often cough up phlegm when you get up in the morning?
(Includes phlegm from the first time you smoke and the first time you go outside, excluding phlegm from the nasal cavity)8.
Do you often cough up phlegm during the day or at night?
(If you answer “no” to both 7 and 8, ask 12) Do you have this cough for three months or more every year? (If you answer “yes”, ask 10; if you answer “no”, ask 12)
Does your coughing get worse in winter?
How many years have you been coughing like this?
Tightness in the chest
Tuberculosis
Do you feel tightness or tightness in your chest? 12.
(Ask 13 if you are a yes, 14 if you are a no)
Does your chest tightness or chest pain occur on the first day back to work after a break? 13.
13a. Do you have this symptom on the first day back to work every time after a break? 13b. How many days during the work week do these symptoms last? 14.Have you ever had chest tightness or chest tightness in the past? (Ask 14a and b if you are a yes, 15 if you are a no) 14a.
Does your chest tightness or chest tightness occur on the first day back to work after a break? How many years have these symptoms lasted?
Previous medical conditions
Do you feel short of breath when walking fast on the ground or going upstairs? Do you feel short of breath when walking on the ground with people of your own age? Do you have to stop and rest for a while when walking on the ground because of shortness of breath? Is shortness of breath more obvious on a particular day during the work week? Which day?
Have you ever had a fever while on duty or off duty? When did this fever start? Have you ever had a fever after the following circumstances? After your first job with linen or cotton?
After being exposed to a large amount of linen or cotton dust?
After leaving the linen or cotton job?
Just after entering the factory
Have you ever had the following diseases? (Put a “√” on the “yes” item and record the time when it started in detail afterwards. 21.
Time, duration, frequency of occurrence and diagnostic unit) Heart disease
Chronic bronchitis
Pleurisy
Emphysema
Bronchiectasis
Chronic cor pulmonale
Bronchial asthma
Hay fever (or other allergic diseases
Do you smoke now?
(“No”, ask 23)
How old were you when you started smoking?www.bzxz.net
How many years have you smoked?
How much do you smoke?
Have you ever smoked regularly?
How old were you when you started smoking?
How many years have you quit smoking?
How much did you smoke in the past?
Continued Table B1
C.1 Measurement items
VC Vital capacity
FVC Forced vital capacity
FEV1.0 Forced vital capacity in one second
C.2 Requirements for selecting instruments
Appendix C
(Normative Appendix)
Methods and requirements for pulmonary function measurement
a. The accuracy of the instrument should be maintained within a full 50mL or the reading error should be within 3%. b. The vital capacity range measured by the instrument is 0 to 7L (BTPS). c. The flow rate measurement device should be able to measure a flow rate of 0 to 12L/s. d. The instrument should have a capacity average related to the BTPS state. e: There is a device for recording flow rate-volume or time-volume. When measuring FEV1.o, the minimum paper speed should be 2cm/s, and the capacity should be within 3%. The volume should be at least 10mm high per liter.
f. The instrument should remain stationary for at least 10 seconds to accumulate gas, and the instrument should not pause for at least 0.5 seconds when the flow rate is between 25mL/s and 50mL/s.
g. The instrument should be able to be calibrated on site, and the capacity calibration device should provide at least 2L of capacity displacement. Perform horizontal adjustments before use, check the rotation of each pulley, and reduce the resistance to a minimum. C.3 Method
C.3.1 The measurement is carried out when the subject has no cold or respiratory infection. The subject can stand or sit, and should maintain the same posture when repeating the measurement. Use a nose clip. Stop smoking on the day of the test and rest for 10 minutes before the test. C.3.2 Use the same instrument in the experiment .
C.3.3 Ask the subject to loosen his clothes. When measuring, pay attention to slightly raise the subject's lower neck and stretch the neck. Ask the subject to slowly expand the chest and fully inhale to the maximum amount, then blow air into the spirometer with the greatest effort, the fastest speed, and without interruption. C.3.4 The FVC measurement that meets the requirements should be performed at least three times, and the difference between the two best readings should be within 5% or 0.1L. The one with the largest FVC and FEV1.0 values is used. Corrected by BTPS status. C.3.5 The pulmonary ventilation function should be measured on the first day of work after a work break. "Work break" means leaving the dust exposure for more than 36 hours. C.3.6 The pulmonary function should be measured before and after the work shift on the working day to evaluate the acute decrease in ventilation function. "After work" means 6 hours after work. If the FEV1.0 decreases after work, it should be measured again 20 minutes after the spray inhalation of bronchodilator. The inhalation test is positive if it increases by 15% or more compared with the actual measured value before inhalation. C.4 Notes
The following situations shall be considered as unqualified:
..coma. Failure to reach the maximum inspiration level before exhalation; b. Failure to use the maximum force during the entire exhalation process; c. Continuous exhalation is less than 58 or there is no obvious flat segment on the time-volume curve; d. Coughing or closing of the glottis during inspiration or exhalation; e. Obstruction of the mouthpiece or tube (due to tongue, dentures, etc.); f. Slow start of exhalation, and it is difficult to determine the starting point; g. The difference between the three measured values is greater than 10%.
Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.