1.Theoretical Model for Accident Prevention Based on Root Cause Analysis With Graph Theory
Safety and Health at Work 2021;12(1):42-50
Methods:
Severe traffic accidents were analyzed from four prevailing modes of today's transportations: sea, air, railway, and road. Main root causes of all four accidents were defined with implementation of the approach, based on Flanagan's critical incident technique. In accordance with Molan's Availability Humanization model (AH model), possible preventive or humanization interventions were defined with the focus on technology, environment, organization, and human factors.
Results:
According to our analyses, there are significant similarities between accidents. Root causes of accidents, human behavioral patterns, and possible humanization measures were presented with rooted graphs. It is possible to create a generalized model graph, which is similar to rooted graphs, for identification of possible humanization measures, intended to prevent similar accidents in the future. Majority of proposed humanization interventions are focused on organization. Organizational interventions are effective in assurance of adequate and safe behavior.
Conclusions
Formalization of root cause analysis with rooted graphs in a model offers possibility for implementation of presented methods in analysis of particular events. Implementation of proposed humanization measures in a particular analyzed situation is the basis for creation of safety culture.
2.Theoretical Model for Accident Prevention Based on Root Cause Analysis With Graph Theory
Safety and Health at Work 2021;12(1):42-50
Methods:
Severe traffic accidents were analyzed from four prevailing modes of today's transportations: sea, air, railway, and road. Main root causes of all four accidents were defined with implementation of the approach, based on Flanagan's critical incident technique. In accordance with Molan's Availability Humanization model (AH model), possible preventive or humanization interventions were defined with the focus on technology, environment, organization, and human factors.
Results:
According to our analyses, there are significant similarities between accidents. Root causes of accidents, human behavioral patterns, and possible humanization measures were presented with rooted graphs. It is possible to create a generalized model graph, which is similar to rooted graphs, for identification of possible humanization measures, intended to prevent similar accidents in the future. Majority of proposed humanization interventions are focused on organization. Organizational interventions are effective in assurance of adequate and safe behavior.
Conclusions
Formalization of root cause analysis with rooted graphs in a model offers possibility for implementation of presented methods in analysis of particular events. Implementation of proposed humanization measures in a particular analyzed situation is the basis for creation of safety culture.
3.Clinical Efficacy and Effects on Hemorheology of Acupuncture Therapy Combined with Gabapentin in the Treatment of Patients with Tension Headache
Jun ZHU ; Xinrong YE ; Zhiqing ZHUANG ; Weixia GU ; Molan WANG
China Pharmacist 2017;20(2):290-292
Objective:To investigate the clinical efficacy and effects on hemorheology of acupuncture therapy combined with gaba-pentin in the treatment of patients with tension headache. Methods:Totally 92 cases of patients with tension headache were randomly divided into the observation group (n=46) and the control group (n=46) according to the random number table. The control group was given gabapentin, while the observation group was treated with acupuncture therapy on the basis of treatment in the control group. The treatment course was 4 weeks. The clinical efficacy, changes of the headache indices, VAS score and hemorheology levels before and after the treatments in the two groups were compared, and the incidence of adverse reactions was observed as well. Results:The to-tal effective rate of the observation group (93. 48%) was significantly higher than that of the control group (73. 91%, P<0. 05). Af-ter the treatment, the headache indices in both groups significantly decreased (P<0. 05), and the decrease in the observation group was more significant than that in the control group (P<0. 05). The VAS scores in both groups significantly decreased after the treat-ment (P<0. 05), and the decrease in the observation group was more significant than that in the control group (P<0. 05). The plas-ma viscosity, hematocrit and platelet aggregation rate in both groups significantly decreased after the treatment (P<0. 05), and the decrease in the observation group was more notable than that in the control group (P<0. 05). No severe adverse reactions were shown in both groups during the treatment course. Conclusion: Acupuncture therapy combined with gabapentin in the treatment of patients with tension headache shows striking effects, which can improve hemorheology with promising safety and deserves further studies.
4.Global status of Toxoplasma gondii infection: systematic review and prevalence snapshots
Molan, A. ; Nosaka, K. ; Hunter, M. ; Wang, W
Tropical Biomedicine 2019;36(4):898-925
Our group sought to determine the global status of T. gondii infection and to
evaluate any continental and geographical trends by systematically examining the currently
available epidemiological data on the prevalence of T. gondii infection. A comprehensive
literature search was conducted from 10 electronic databases (Google Scholar, Science
Direct, Embase, PubMed, PLOS ONE, Web of Knowledge, SciELO, MyAIS, Free Medical
Journals, and Scopus) without date or language restrictions. Specific medical subject heading
terms were used to search for human T. gondii seroprevalence studies that recruited subjects
from general apparently healthy populations. The data were collated and analysed for both
continental and global trends. The search identified 152 published studies that examined a
total of 648,010 subjects. From these, 166,255 were seropositive for T. gondii infection
indicating an average global seroprevalence rate of 25.7% (95% CI: 25.6 – 25.8%). The overall
range of seroprevalence was determined to be 0.5 – 87.7%. African countries had the highest
average seroprevalence rate of 61.4%, followed by Oceania with 38.5%, South America with
31.2%, Europe with 29.6%, USA/Canada with 17.5%, and Asia with 16.4%. Numerous
environmental and human factors affect the differences in T. gondii seroprevalence rates
observed between the various countries and continents. Monitoring the source and
transmission may assist public health authorities to clarify the risk factors involved, as well
as focus on implementing optimal state-specific health policies targeting T. gondii transmission
control.
5.Seroprevalence of Toxoplasma gondii Infection in Children With Visual and/or Hearing Disability in Comparison With Healthy Children in Iraq
Samar Farhan Mahmoud ; Abdul-Lateef Molan ; Munther H. Rathi
Malaysian Journal of Medicine and Health Sciences 2020;16(No.3, September):140-147
Introduction: Infection with Toxoplasma gondii is very prevalent in Iraq. The aim of this study was to determine the seroprevalence of T. gondii infection among children with visual, hearing or both disabilities (VHDC) and among healthy children (HC) living in Diyala and Baghdad provinces in Iraq. Methods: For this study, 100 VHDC children (attending the Al-Amal Centers for Blind, Dumb and Deaf Children) and 100 age-matched healthy children were recruited. Blood was obtained from all disabled and healthy children and the sera were examined for the presence of the specific antibodies (IgG and IgM) of T. gondii. Results: Among VHDC children, the seropositivity of IgG antibodies (24.0%) was significantly higher (OR= 7.6; 95% CI= 2.5-22.8; P= 0.0003) than that in HC children (4.0%). Disabled boys (OR= 5.7; P= 0.009) and disabled girls (OR= 12.7; P= 0.0183) showed significantly higher seropositivity than healthy children. The greatest risk was in disabled children who are their mothers had one or more abortion (OR= 6.89; P= 0.0005), followed by children who have brother or sister with visual and/or hearing disabilities (OR= 5.6; P= 0.0039), children whose their mothers got infection during pregnancy (OR= 2.9; P= 0.0256), and then children whose their mothers have taken treatment (OR= 2.9; P= 0.0256). The presence of stray cats in the houses was identified as a risk factor (OR= 4.05; P= 0.0186). Conclusion: In children with visual and/or hearing disabilities, the seropositivity of IgG antibodies was significantly higher than that in healthy children.
6.Advances and Challenges in the Research of Integration Methods of Animal Experimental Evidence
Qingyong ZHENG ; Tengfei LI ; Jianguo XU ; Yongjia ZHOU ; Zhichao MA ; Na WANG ; Molan LI ; Wenjing YANG ; Peirun WU ; Haidong WANG ; Jinhui TIAN
Laboratory Animal and Comparative Medicine 2024;44(5):567-576
Integrating evidence from animal experiments is a critical component of biomedical research, providing essential prior information for in-depth investigations of disease mechanisms and new drug development. Animal models have played an irreplaceable role in simulating human diseases. However, the integration of evidence from animal experiments has faced numerous challenges, including insufficient emphasis, significant heterogeneity in study designs, high publication bias, and discrepancies with clinical research practices. This paper first identifies existing issues in the original research evidence from animal experiments, such as the selection and applicability of animal models, considerations in the design of experimental studies, and factors influencing the translation of animal experimental evidence. It then discusses various methods for integrating this evidence, including systematic review and meta-analysis, overview of systematic review/umbrella review, scoping review, and evidence mapping, while highlighting recent advancements in their application. Finally, the paper addresses the main challenges currently encountered in the integration of evidence from animal experiments and proposes targeted improvement strategies aimed at enhancing the efficiency of translating research outcomes into clinical practice and promoting the advancement of evidence-based medicine. By continuously optimizing original experimental research protocols and evidence integration practices, this work aims to establish a more efficient and scientific environment for the synthesis of evidence from animal experiments, ultimately contributing to clinical trials and human health.