1.An analytic method of wavelet energy value to evaluate the contraction intensity of uterus.
Journal of Biomedical Engineering 2012;29(1):80-83
The data of uterine contraction pressure is the information source for extracting uterine contractions status. Because there is a variety of interference existing in contraction pressure data, commonly used methods such as uterine contraction intensity integration method can not obtain decent evaluation results. We used the bior 2.4 biorthogonal wavelet to decompose and reconstruct the pressure data in order to obtain the best denoising effect. Combining with the denoised results, we proposed an algorithm of the wavelet energy value. Based on the algorithm, we calculated the curve of wavelet energy value. It was proved that using the curve of wavelet energy value can better identify contractions waveform and evaluation contractions intensity.
Algorithms
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Artifacts
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Female
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Humans
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Pregnancy
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Signal Processing, Computer-Assisted
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Uterine Contraction
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physiology
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Uterine Monitoring
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Wavelet Analysis
2.Influence of dexmedetomidine combined with sufentanil on postoperative analgesia effect and immune function for patients undergoing lower limb fracture surgery
Xing ZHOU ; Suping ZHONG ; Hengfa LEI ; Chuntao YANG ; Chunlian CAO ; Jie TIAN ; Yuanyuan LIU ; Ji'an YANG ; Jun LI ; Na MI ; Junmin HE
Chinese Journal of Postgraduates of Medicine 2017;40(6):531-535
Objective To explore the influence of dexmedetomidine combined with sufentanil on postoperative analgesia effect and immune function for patients undergoing lower limb fracture surgery. Methods One hundred cases patients of lower limb fracture undergoing open reduction and internal fixation of elective surgery in our hospital from January 2016 to November 2016 were selected ( ASAⅠ-Ⅱgrade, male 51 cases and female 49 cases, 30-65 years old, 50-75 kg). All cases were randomly divided into sufentanil group (Group S) and dexmedetomidine combined with sufentanil group (Group DS) according to the random number table, who used patient-controlled intravenous analgesia (PCIA). The PCIA drug formulations of two groups were as followings: sufentanil group (Group S) used 3 μg/h sufentanil+ondansetron 16 mg, dissolved in 0.9%sodium chloride injection 100 ml;dexmedetomidine combined with sufentanil group (Group DS) used dexmedetomidine 0.1μg/(kg · h)+sufentanil 2μg/h+ondansetron 16 mg, dissolved in 0.9%sodium chloride injection 100 ml;background infusion rate was 2 ml/h, and loading dose was 2 ml. Dose for patient-controlled analgesia (PCA) was 0.5 ml, and locking time was 15 min. The changes of pain, MAP, HR , sedation scores were recorded at 4 h (T1), 8 h (T2), 24 h (T3) and 48 h (T4) after operation; nausea and vomiting, hypotension, bradycardia, respiratory depression and other adverse reactions were aslo recorded at the same time. At 10 min before induction of anesthesia (T0) and T1-T4 after operation, the CD3+, CD4+, CD8+and NK cell activity of peripheral blood T lymphocyte subsets were determined using flow cytometry, and CD4 +/CD8 + ratio was calculated. Results The levels of MAP and HR in DS group at each time point after operation were lower than those in group S (P<0.05), the level of visual analogue score (VAS) in DS group at different time points were significantly lower than those of s group: (1.8 ± 0.3) scores vs. (2.5 ± 0.5) scores, (1.1 ± 0.5) scores vs. (1.9 ± 0.3) scores, (1.0 ± 0.5) scores vs. (1.8 ± 0.5) scores, (0.8 ± 0.3) scores vs. (1.5 ± 0.6) scores (P < 0.05), Ramsay Sedation score was significantly higher than that of s group: (3.5 ± 0.3) scores vs. (2.4 ± 0.6) scores, (3.3 ± 0.5) scores vs. (2.5 ± 0.3) scores, (3.5 ± 0.6) scores vs. (2.3 ± 0.5) scores, (3.2 ± 0.4) scores vs. (2.2 ± 0.5)scores (P<0.05);nausea and vomiting occurred in two patients after the operation of group DS , which was significantly lower than that of S group (P<0.05);compared with those at T0, CD3+, CD4+, CD4+/CD8+and NK cells in the two groups of patients decreased significantly at the time of T1-T4 (P<0.05);The levels of CD3+, CD4+, CD4+/CD8+and NK cells were significantly higher in group DS at T1- T4 than those in group S(P < 0.05). Conclusions Dexmedetomidine combined with sufentanil for analgesia in patients with lower limb fracture surgery has better effect. It decreases the incidence of nausea and vomiting, and improves the cellular immune function of patients.
3.Liver cell therapies: cellular sources and grafting strategies.
Wencheng ZHANG ; Yangyang CUI ; Yuan DU ; Yong YANG ; Ting FANG ; Fengfeng LU ; Weixia KONG ; Canjun XIAO ; Jun SHI ; Lola M REID ; Zhiying HE
Frontiers of Medicine 2023;17(3):432-457
The liver has a complex cellular composition and a remarkable regenerative capacity. The primary cell types in the liver are two parenchymal cell populations, hepatocytes and cholangiocytes, that perform most of the functions of the liver and that are helped through interactions with non-parenchymal cell types comprising stellate cells, endothelia and various hemopoietic cell populations. The regulation of the cells in the liver is mediated by an insoluble complex of proteins and carbohydrates, the extracellular matrix, working synergistically with soluble paracrine and systemic signals. In recent years, with the rapid development of genetic sequencing technologies, research on the liver's cellular composition and its regulatory mechanisms during various conditions has been extensively explored. Meanwhile breakthroughs in strategies for cell transplantation are enabling a future in which there can be a rescue of patients with end-stage liver diseases, offering potential solutions to the chronic shortage of livers and alternatives to liver transplantation. This review will focus on the cellular mechanisms of liver homeostasis and how to select ideal sources of cells to be transplanted to achieve liver regeneration and repair. Recent advances are summarized for promoting the treatment of end-stage liver diseases by forms of cell transplantation that now include grafting strategies.
Humans
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Liver/surgery*
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Hepatocytes/transplantation*
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Stem Cells/metabolism*
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Liver Diseases/surgery*
4.Progress in qualitative study on mental health service demand of children and adolescents with adverse childhood experiences.
Ping MAO ; Nannan LONG ; Wenzhao XIE ; Fang YAN ; Yang CHEN ; Lianhua PENG
Journal of Central South University(Medical Sciences) 2022;47(8):1163-1170
As a global public health problem, adverse childhood experiences (ACEs) is an important factor leading to serious psychological and behavioral problems in children and adolescents. Mental health service plan based on mental health service needs is the key to effectively improve the psychological problems of children and adolescents with ACEs. Emotional support, life skills training, mental health education, and individualized psychological intervention can effectively improve the mental health of children and adolescents with ACEs. Among them, emotional support is an important way to help individual reduce psychological and behavioral problems; secondly, life skills training can significantly improve the individual's psychosocial ability; and mental health education is a necessary way to promote the development of individual mental health. Individualized psychological intervention can promote individual to obtain more professional mental health service and improve their psychological symptoms, which is crucial for preventing the occurrence of mental health problems. Future research can develop targeted mental health interventions based on the specific mental health service needs.
Adolescent
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Adverse Childhood Experiences
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Child
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Humans
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Mental Health
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Mental Health Services
5.A case of intramuscular injection of methomyl poisoning.
Guo Hao LIAO ; Bin CHENG ; Hong Yu YU ; Kai Yang WANG ; Wei Juan HU ; Jian CHEN
Chinese Journal of Industrial Hygiene and Occupational Diseases 2022;40(11):865-866
Methomyl is a carbamate insecticide widely used in pesticides. Most of the poisoning methods are through digestive tract, respiratory tract and skin contact. At present, there is no report of poisoning caused by intramuscular injection. A case of poisoning caused by intramuscular injection of methomyl was analyzed retrospectively. About 4 minutes later, cholinergic crisis and central inhibition occurred. Venovenous-Extracorporeal Membrane Oxygenation (VV-ECMO) and atropine were given quickly. Finally, the patient was successfully rescued and had a good prognosis. After intramuscular injection of methomyl, cholinergic crisis can occur rapidly, and the onset rate is significantly faster than that of digestive tract, respiratory tract and skin contact.
Humans
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Retrospective Studies
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Methomyl
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Insecticides
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Pesticides
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Cholinergic Agents
6.Research advances in chemical constituents and pharmacological activities of different parts of Eucommia ulmoides.
Cong LIU ; Fei-Fei GUO ; Jun-Ping XIAO ; Jun-Ying WEI ; Li-Ying TANG ; Hong-Jun YANG
China Journal of Chinese Materia Medica 2020;45(3):497-512
To date, 205 compounds have been identified from different medicinal parts of Eucommia ulmoides, including lignans, iridoid terpenoids, phenols, flavonoids, terpenoids and steroids, polysaccharides and others. Their pharmacological effects include blood pressure-lowering, blood sugar-lowering, blood lipids-regulating, prevention of osteoporosis, anti-inflammation, liver protection, anti-cancer and so on. Their efficacy and mechanism from different parts are slightly different. In this paper, the chemical composition, pharmacological action and mechanism of different parts of E. ulmoides were systematically summarized, as well as its quality control and processing research, to provide theoretical basis for further rational development and utilization of E. ulmoides.
Eucommiaceae/chemistry*
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Flavonoids
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Iridoids
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Lignans
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Phenols
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Phytochemicals/pharmacology*
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Plants, Medicinal/chemistry*
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Polysaccharides
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Steroids
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Terpenes