As a major category of occupational hazards in China, physical factors are widely distributed in various industries and affect a large number of workers. The list and diagnostic criteria of occupational diseases caused by physical factors are important basis for occupational disease diagnosis and protection of occupational health rights and interests for occupational populations. This article compares the differences in the list of occupational diseases caused by physical factors at home and abroad, analyzes the problems in the current list of occupational diseases caused by physical factors and related diagnostic standards in China, and puts forward relevant suggestions for further adjusting the list of occupational diseases caused by physical factors, formulating and revising relevant diagnostic standards for occupational diseases, providing reference for improving the classification and catalogue of occupational diseases in China in the future.

Objective To explore the correlation between TCM inspection and coronary heart disease(CHD)symptoms and TCM syndrome types.Methods Totally 336 patients with CHD or non-CHD were included in Guangdong Provincial Hospital of Traditional Chinese Medicine.A self-developed scoring standard for TCM inspection was used to collect information on TCM inspection and related symptoms and signs,and the correlation between TCM inspection and age,symptoms and TCM syndrome types was explored.Results The positive rates of Frank's sign,skin fold in nasal root(SFNR),poker face(PF),sublingual meridians and TCM comprehensive inspection increased with age(P<0.05);However,there was no significant difference in the distribution of positive and negative groups in different age groups,including hand inspection,pulse diagnosis,vertical fold between eyebrows(VFE),greasy tongue coating and dark tongue texture(P>0.05).The subjects in positive group of hand inspection,Frank's sign,PF,pulse diagnosis,dark tongue texture and TCM comprehensive inspection were more prone to suffer from chest pain than those in the negative group(P<0.05);as the score increased,the proportion of chest pain increased.The Frank's sign positive group is more prone to have palpitations than the negative group(P<0.05);the PF and pulse diagnosis positive group were more prone to have dizziness than the negative group(P<0.05);the main TCM syndrome types in the positive group of TCM inspection were yang qi deficiency combined with phlegm dampness and stasis obstruction.Conclusion The subjects in positive group of TCM inspection were more prone to suffer from chest pain,palpitations and dizziness than those in the negative group.The main TCM syndrome types in the positive group were yang qi deficiency combined with phlegm dampness and stasis obstruction.

Objective To explore the correlation between TCM inspection and coronary heart disease(CHD)symptoms and TCM syndrome types.Methods Totally 336 patients with CHD or non-CHD were included in Guangdong Provincial Hospital of Traditional Chinese Medicine.A self-developed scoring standard for TCM inspection was used to collect information on TCM inspection and related symptoms and signs,and the correlation between TCM inspection and age,symptoms and TCM syndrome types was explored.Results The positive rates of Frank's sign,skin fold in nasal root(SFNR),poker face(PF),sublingual meridians and TCM comprehensive inspection increased with age(P<0.05);However,there was no significant difference in the distribution of positive and negative groups in different age groups,including hand inspection,pulse diagnosis,vertical fold between eyebrows(VFE),greasy tongue coating and dark tongue texture(P>0.05).The subjects in positive group of hand inspection,Frank's sign,PF,pulse diagnosis,dark tongue texture and TCM comprehensive inspection were more prone to suffer from chest pain than those in the negative group(P<0.05);as the score increased,the proportion of chest pain increased.The Frank's sign positive group is more prone to have palpitations than the negative group(P<0.05);the PF and pulse diagnosis positive group were more prone to have dizziness than the negative group(P<0.05);the main TCM syndrome types in the positive group of TCM inspection were yang qi deficiency combined with phlegm dampness and stasis obstruction.Conclusion The subjects in positive group of TCM inspection were more prone to suffer from chest pain,palpitations and dizziness than those in the negative group.The main TCM syndrome types in the positive group were yang qi deficiency combined with phlegm dampness and stasis obstruction.

As a major category of occupational hazards in China, physical factors are widely distributed in various industries and affect a large number of workers. The list and diagnostic criteria of occupational diseases caused by physical factors are important basis for occupational disease diagnosis and protection of occupational health rights and interests for occupational populations. This article compares the differences in the list of occupational diseases caused by physical factors at home and abroad, analyzes the problems in the current list of occupational diseases caused by physical factors and related diagnostic standards in China, and puts forward relevant suggestions for further adjusting the list of occupational diseases caused by physical factors, formulating and revising relevant diagnostic standards for occupational diseases, providing reference for improving the classification and catalogue of occupational diseases in China in the future.

Objective:To investigate whether there are differences in clinical outcomes and perinatal outcomes associated with different initial dosages of gonadotropin (Gn) in expected poor prognosis young patients, diagnosed according to the POSEIDON criteria, undergoing the early-follicular phase long-acting gonadotropin-releasing hormone agonist (GnRH-a) long protocol.Methods:This retrospective cohort study analyzed clinical data from patients who underwent their first in vitro fertilization/intracytoplasmic sperm injection (IVF/ICSI)-fresh embryo transfer (ET) cycle at the Reproductive Medicine Center of the First Affiliated Hospital of Zhengzhou University between January 1, 2016, and June 30, 2022. Patients included in the study were those who underwent ovarian stimulation with the early-follicular phase long-acting GnRH-a long protocol and young expected poor prognosis. Patients were divided into three groups based on the starting Gn dosage: low-dose group (Gn<225 U), medium-dose group (225 U≤Gn<300 U), and high-dose group (Gn=300 U). Clinical and perinatal outcomes were compared among the three groups. Results:A total of 1 659 cycles were included in the study, with 316 cycles in the low-dose group, 536 cycles in the medium-dose group, and 807 cycles in the high-dose group. The number of oocytes retrieved in the high-dose group [6.00 (4.00,9.00)] was less than that in the medium-dose group [8.00 (6.00,11.00)] and the low-dose group [11.00 (7.00,13.00)], which in the medium-dose group was less than that in the low-dose group, and the differences were statistically significant (all P<0.017). There were no significant statistical differences in oocyte maturation rate, normal fertilization rate of IVF/ICSI, or high-quality embryo rate among the three groups (all P>0.05). The blastocyst formation rates decreased sequentially in the low-dose group [20.33% (425/2 090)], medium-dose group [17.28% (510/2 951)], and high-dose group [14.62% (518/3 542)], with significant differences between each pair of groups (all P<0.017). There were no significant differences in clinical pregnancy rate, biochemical pregnancy rate, ectopic pregnancy rate, miscarriage rate, chromosomal abnormalities in miscarriage tissues, or preterm birth rate among the three groups (all P>0.05). However, the live birth rate was significantly lower in the high-dose group [47.83% (386/807)] than in the low-dose group [57.28% (181/316), P=0.004]. After adjusting for confounding factors using multivariate logistic regression, the high starting Gn dosage was found to be an independent risk factor for decreased live birth rate (a OR=0.659, 95% CI: 0.462-0.941, P=0.022). There were no significant differences in perinatal outcomes among the groups, regardless of whether confounding factors were adjusted for (all P>0.05). Conclusion:In young patients with expected poor prognosis undergoing their first ovarian stimulation with the long-acting follicular phase protocol, increasing the starting Gn dosage does not increase the number of oocytes retrieved and is associated with a lower blastocyst formation rate and a reduced live birth rate, but does not increase the risk of adverse perinatal outcomes.

Objective:To investigate whether there are differences in clinical outcomes and perinatal outcomes associated with different initial dosages of gonadotropin (Gn) in expected poor prognosis young patients, diagnosed according to the POSEIDON criteria, undergoing the early-follicular phase long-acting gonadotropin-releasing hormone agonist (GnRH-a) long protocol.Methods:This retrospective cohort study analyzed clinical data from patients who underwent their first in vitro fertilization/intracytoplasmic sperm injection (IVF/ICSI)-fresh embryo transfer (ET) cycle at the Reproductive Medicine Center of the First Affiliated Hospital of Zhengzhou University between January 1, 2016, and June 30, 2022. Patients included in the study were those who underwent ovarian stimulation with the early-follicular phase long-acting GnRH-a long protocol and young expected poor prognosis. Patients were divided into three groups based on the starting Gn dosage: low-dose group (Gn<225 U), medium-dose group (225 U≤Gn<300 U), and high-dose group (Gn=300 U). Clinical and perinatal outcomes were compared among the three groups. Results:A total of 1 659 cycles were included in the study, with 316 cycles in the low-dose group, 536 cycles in the medium-dose group, and 807 cycles in the high-dose group. The number of oocytes retrieved in the high-dose group [6.00 (4.00,9.00)] was less than that in the medium-dose group [8.00 (6.00,11.00)] and the low-dose group [11.00 (7.00,13.00)], which in the medium-dose group was less than that in the low-dose group, and the differences were statistically significant (all P<0.017). There were no significant statistical differences in oocyte maturation rate, normal fertilization rate of IVF/ICSI, or high-quality embryo rate among the three groups (all P>0.05). The blastocyst formation rates decreased sequentially in the low-dose group [20.33% (425/2 090)], medium-dose group [17.28% (510/2 951)], and high-dose group [14.62% (518/3 542)], with significant differences between each pair of groups (all P<0.017). There were no significant differences in clinical pregnancy rate, biochemical pregnancy rate, ectopic pregnancy rate, miscarriage rate, chromosomal abnormalities in miscarriage tissues, or preterm birth rate among the three groups (all P>0.05). However, the live birth rate was significantly lower in the high-dose group [47.83% (386/807)] than in the low-dose group [57.28% (181/316), P=0.004]. After adjusting for confounding factors using multivariate logistic regression, the high starting Gn dosage was found to be an independent risk factor for decreased live birth rate (a OR=0.659, 95% CI: 0.462-0.941, P=0.022). There were no significant differences in perinatal outcomes among the groups, regardless of whether confounding factors were adjusted for (all P>0.05). Conclusion:In young patients with expected poor prognosis undergoing their first ovarian stimulation with the long-acting follicular phase protocol, increasing the starting Gn dosage does not increase the number of oocytes retrieved and is associated with a lower blastocyst formation rate and a reduced live birth rate, but does not increase the risk of adverse perinatal outcomes.

Pneumoconiosis is a serious occupational disease with the largest number of patients in China. Social security provides strong support for the treatment of pneumoconiosis patients, but there are few reports on the implementation of social security for pneumoconiosis in China. Through literature review, this paper systematically combs the relevant reports of pneumoconiosis social security, understands the current situation and problems of social security for pneumoconiosis in China, and provides a scientific basis for improving security policy for the pneumoconiosis patient.

Since its founding 100 years ago, the Communist Party of China (CPC) has attached great importance to the occupational health of workers, and closely linked the safeguard of occupational safety and health of workers with the missions of leading the people to stand up, get rich, and become strong. Based on this, the achievements of occupational health work made under the leadership of the CPC since the new democratic revolution, socialist revolution and construction, the new period of reform and opening up and socialist modernization, and socialism with Chinese characteristics for a new era were summarized, so as to provide reference for understanding the legacy of China's occupational health undertaking, and innovating to create the future.

Pneumoconiosis is a serious occupational disease with the largest number of patients in China. Social security provides strong support for the treatment of pneumoconiosis patients, but there are few reports on the implementation of social security for pneumoconiosis in China. Through literature review, this paper systematically combs the relevant reports of pneumoconiosis social security, understands the current situation and problems of social security for pneumoconiosis in China, and provides a scientific basis for improving security policy for the pneumoconiosis patient.

With the wide application of nanomaterials in consumer products in the market, it is necessary to understand the existence and release of nanomaterials in consumer products, as well as the current situation of exposure assessment of consumers. China has been a large industrial producer with a huge consumer market, but the supervision of consumer goods with nanomaterials is almost blank. This article summarized and classified the existing consumer products of nanomaterials in the international market, and discussed the release of key nanomaterials in consumer products and the exposure assessment methods of consumers, in order to provide a scientific basis for the establishment of a regulatory system for consumer products of nanomaterials in China in the future.