1.The significance of ambulance equipped with ventilation in transportation of patients with cerebral infarction and OSAHS.
Chinese Journal of Medical Instrumentation 2014;38(2):154-156
During transportation of patients with cerebral infarction and OSAHS, 54 Patients in comparison group was not in the ambulance with ventilator while 73 patients in observation group with ventilation. After two weeks treatment, the observation group's heart rate, systolic blood pressure, diastolic blood pressure and carbon dioxide partial pressure were significantly lower than that of the comparison group, while the oxygen partial pressure and oxygen saturation was significantly higher than the comparison group,observation group mortality rate was 2.74%, significantly lower than the comparison group which was 7.41%.
Aged
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Ambulances
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Cerebral Infarction
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complications
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therapy
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Female
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Humans
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Male
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Middle Aged
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Sleep Apnea, Obstructive
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complications
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therapy
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Transportation of Patients
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Ventilators, Mechanical
2.Combined General and Gynecological Laparoscopy:Report of 160 cases
Pingjun LI ; Zhenling JI ; Zhixian ZENG
Chinese Journal of Minimally Invasive Surgery 2001;0(05):-
Objective To investigate the clinical value of combined general and gynecological laparoscopy.Methods From March 2003 to December 2006,160 patients with abdominal and gynecological diseases were treated with laparoscopy,including laparoscopic cholecystectomy(LC)+ salpingostomy in 20,LC + ovarian cystectomy in 24 cases,LC + hysteromyomectomy in 12,LC + hysteromyomectomy and uterine artery blockage in 7,LC + subtotal hysterectomy in 19,LC + total hysterectomy in 11,LC + treatment of endometriosis in 6,laparoscopic appendectomy(LA)+ salpingostomy in 16,LA + ovarian cystectomy in 22,LA + subtotal hysterectomy and total hysterectomy in 18,decortication of liver cysts + ovarian cystectomy in 4,and laparoscopic hepatectomy + adnexectomy in 1.Results Laparoscopic procedures were completed in all the 160 cases without conversion to open surgery.The operation time ranged from 40 to 220 min(mean,120 min),and postoperative hospital stay ranged from 1 to 6 days(mean,3.4 days).No patient had perioperative complications.Among the 160 cases,143 were followed up for 3 to 24 months(mean,19.5),during which 1 developed vaginal stump hemorrhage 10 days after the operation and was cured by conservative therapy,1 experienced vaginal polypi at the stump 2 months postoperation and underwent polyp resection.Conclusions Combined general and gynecological laparoscopy is a promising method for patients with abdominal diseases complicated with gynecological diseases.It is important for surgeons from different departments to deeply understand the indications of laparoscopy,prepare well before operation,and cooperate closely.
3.Extract of the Hedysarum Ploybotrys Hand-Ma22 promote Schwann cell differentiation in vitro
Baoguo JIANG ; Yan JIANG ; Pingjun LI
Chinese Journal of Microsurgery 1998;0(01):-
Objective To understand the mechanism of extracts of Hedysarum ploybotrys hand Ma22 on Schwann cell,we studied the effects of the extracts on protein tyrosine kinase (PTKs) in vitro Methods Getting sciatic nerve by operation from SD rats and cultured them in PRMI 1640 medium with 15% embryo bovine serum and with Hedysarum Ploybotrys Hand Ma22 at rate of 1∶1 600,1∶3 200,1∶6 400,1∶12 800 or with nerve growth factor (NGF) NGF as positive control and normal medium as negative one After 48,72 and 96 hours cultures,the sciatic nerve been captured separately and used to examine the activity of PTKs by [? 32 P] ATP incorporation test using protein tyrosine kinase assay system Result In normal culture condition,there are no active PTKs Cultured with NGF and Hedysarum Ploybotrys Hand Ma22,the activity of PTKs increases notable The peak of NGF group appears at 48th hours and 96th hours were 0 0636 and 0 1548 respectively. Hedysarum Ploybotrys Hand Ma22 at 48th hours were 0 4460,0 3326 and 0 4169 at concintration of 1∶1 600,1∶3 200,1∶6 400, and decrease after it. Rank sum test show the correlations to time were negative ( P
4.A retrospective study of variations in kind of internal medicine diseases during pre-hospital emergency medicial service in Chongqing urban area
Li XIANG ; Dingyuan DU ; Pingjun CAI
Chinese Journal of Emergency Medicine 2014;23(9):984-987
Objective To explore the variations in category of internal diseases in order to plan out strategies to deal with during pre-hospital period in Chongqing urban area.Methods The category of internal diseases of pre-hospital emergency service in Chongqing urban area from January 2004 to December 2013 was studied and the data were analyzed retrospectively.Results Firstly,the number of patients in pre-hospital emergency service continued to mount up year by year,from 6031 patients in 2004 to 12 264 patients in 2013.The ration of male to femal was 1.24∶1 to 1.68∶ 1,and the cases of female increased year after year,from 2246 to 5486.Secondly,cardiovascular disease was the leading illness in the wide varieties of internal disease (15.35%-19.36%).The number of cerebrovascular accident (9.72%-13.11%),respiratory diseases (7.48%-10.20%) and digestive diseases (8.36%-10.58%) were escalating.However,the acute poisoning cases (2.36%-6.18%) showed a tendency of decline.The peak time of the pre-hospital emergency service was stable in past ten years.Thirdly,there were seasonal variation in incidence of cardiovascular,cerebrovascular and respiratory disease,more cases occurred in January and December than in other months.Alcoholism commonly peaked before Spring Festival.Fourthly,the peak time of internal disease occurred in the past 10 years was stable,peaked during 20:00-24:00,and the trough time was during 0:00-4:00,the ratio of trough to peak ranged from 30.7% to 43.5%.Conclusion The variation of the internal disease category was associated more or less with seasonal rotation,the improved living standards,and stress of modern life,and the incidence of emergency illness were escalating year by year,thus the corresponding measures should be instituted to deal with those major changes.Improving pre-hospital emergency response capacity and efficacy of treatment is of great significance.Strengthening the prophylaxis and healthcare,and establishing a professional capability for triage classification of diseases during emergency service are great essential for promoting the swiftness of prehospital emergency response.
5.Genetic algorithm applied to optimization of IMRT inverse planning
Dejiang ZENG ; Pingjun LI ; Qingwen LU ; Jinfang LIU
Chinese Medical Equipment Journal 2004;0(09):-
As an advanced conformal therapy, Intensity-modulated radiotherapy (IMRT) can increase the gain ratio of radiotherapy and improve the local control of the tumor. This paper applies genetic algorithm to optimization of IMRT inverse planning. The algorithm model and simulation result are introduced.
6.Determination of polymethoxylated flavones in Citri Reticulatae Pericarpium from eleven cultivar origins
Hujie LUO ; Yiting YANG ; Xiaowei LI ; Meixia LUO ; Pingjun HU ; Hao CHEN ; Guodong ZHENG
Chinese Traditional Patent Medicine 2017;39(3):565-569
AIM To determine the contents of polymethoxylated flavones in Citri Reticulatae Pericarpium from eleven cultivar origins.METHODS HPLC was applied to screening extraction solvents (methanol,anhydrous ethanol,95% ethanol,ethyl acetate and petroleum ether).Ultraviolet-visible spectrophotometry was adopted in the content determination of polymethoxylated flavones in eighteen batches of samples,nobiletin was taken as a reference substance,and the detection wavelength was set at 330 nm.RESULTS Ethyl acetate exhibited the best extraction effect,so it was selected as extraction solvent.Nobiletin showed a good linear relationship within the range of 3.024-13.104 μg/mL (R2 =0.999 8),whose average recovery was 101.37% with the RSD of 1.34%.The contents of polymethoxylated flavones had obvious differences among samples from different cultivar origins,which were relatively high from Citrus reticulata ‘ Chachi’,Citrus reticulata ‘ Dahongpao’,Citrus reticulata ‘ Tangerina’,Citrus reticulata ‘ Ponkan’,Citrus reticulata ‘ Kinokuni’and Citrus reticulata ‘ Shiyueju’(more than 0.4%).CONCLUSION This simple and accurate method can effectively eliminate the interference of another flavonoids,which is suitable for the content determination of polymethoxylated flavones in Citri Reticulatae Pericarpium.
7.Primary development and biomechanics of single vertebrae internal fixation system for thoracolumbar compression fracture
Jicai LI ; Pingjun LIU ; Yongli HE ; Weidong ZHAO ; Dongzhu LIANG ; Bingyan MAO
Chinese Journal of Tissue Engineering Research 2014;(9):1350-1355
BACKGROUND:For severe thoracolumbar compression fracture (>1/3 compression), ideal therapeutic method is minimal y invasive internal fixation, which has good biomechanical functions. Moreover, bone graft is reliable. Injured vertebra reduction and bone graft stability achieved. Motor unit of spinal column and normal physiological function were retained, resulting in lessening nearby segmental degeneration.
OBJECTIVE:To discuss the design of single vertebrae internal fixation system and evaluate its biomechanical performance which apply to treat thoracolumbar compression fracture by endoscope.
METHODS:A brand-new single vertebrae internal fixation system was designed in accordance with data of anatomic measurement of adult thoracolumbar vertebra. Six fresh adult corpse specimens were prepared to produce models of L 1 compression fracture, and assigned to control group, fracture injury group, single vertebrae internal fixation system group, AF reduction internal fixation group and anterior plate internal fixation group.Three-dimensional movement range experiments were conducted separately.
RESULTS AND CONCLUSION:The biomechanical comparison showed that there was no significant difference in three-dimensional range of motion among single vertebrae internal fixation system group (anteflexion, left and right lateroflexion), AF reduction internal fixation group and anterior plate internal fixation group (P>0.05). However, range of motion significantly increased at backward extension, left and right rotation (P<0.05). Results suggested that the design of single vertebrae internal fixation system was novel and the system had good biomechanical performance at anteflexion, left and right lateroflexion. However, it needs to be improved in which lacks of stability of extension and rotation.
8.The clinical value of " Push-pull traction-relax homing-Repeatedly confirmed" in the prevention of bile duct injury in LC
Pingjun LI ; Zhenling JI ; Hongyuan SUN ; Junfeng YANG ; Wei HU ; Changyu LIU ; Defeng LU ; Xia LI ; Gaochao REN ; Huaiyan LI
Chinese Journal of Hepatobiliary Surgery 2011;17(2):102-103
Objective To study the value of the technique of "Push-pull traction-relax homingrepeatedly confirmed" in the prevention of bile duct injury in LC. Methods From March 2001-August 2009, we applied this technique in 4800 cases of LC. The technique of "Push-pull traction" showed the structures of in the Calot's triangle. The technique of "relax homing" was to restore the cystic duct,hepatic duct and common bile duct to their original anatomical positions. The technique of "repeatedly confirmed" repeatedly identified the positions of the cystic duct, the common hepatic duct and the common bile duct. Results There was no bile duct injury. Conversion to open surgery happened in 118patients due to difficulties in identifying the Calot's triangle structures, bile duct stones, gallbladder cancer, and gallbladder-duodenal fistula. Conclusions The "Push-pull traction-relax homing-repeatedly confirmed" technique could effectively prevent bile duct injury in LC. The method is simple, easy to master and worthy of promotion.
9.Effects of Zingiber officinale and processed Zingiber officinale on pharmacodynamic indexes and intestinal flora on gastric ulcer rats with spleen-stomach deficiency and cold type
Lingying YU ; Xing LI ; Pingjun CAI ; Mengqin QIANG ; Baohua DONG ; Yunxiu JIANG ; Qinwan HUANG ; Zhimin CHEN
China Pharmacy 2022;33(20):2460-2465
OBJECTIVE To explore the influence of Zingiber officinale and processed Z. officinale on pharmacodynamic indexes and intestinal flora on gastric ulcer rats with spleen -stomach deficiency and cold type before and after processing with sand . METHODS The SD rats were randomly divided into normal group ,model group ,positive control group (Compound tianqi weitong capsule 0.45 g/kg),Z. officinale high-dose(15.0 g/kg)and low -dose(7.5 g/kg)groups,processed Z. officinale high- dose(15.0 g/kg)and low -dose(7.5 g/kg)groups,with 10 rats in each group . The rat model of gastric ulcer with spleen -stomach deficiency and cold type was established by intragastric administration of vinegar (day 1-10)and absolute ethanol (day 11). Administration groups were given relevant liquid intragastrically ,and normal group and model group were given water intragastrically(day 5-10). One hour after intragastric administration of absolute ethanol ,blood was taken from the femoral artery of rats ,the serum contents of motilin (MTL),gastrin(GAS),epidermal growth factor (EGF)as well as 4 items of blood coagulation [activated partial thromboplastin time (APTT),prothrombin time (PT),thrombin time (TT),fibrinogen(FIB)] were detect. The ulcer index and inhibition rate of ulcer in gastric tissue were calculated . The pathological changes of gastric tissue were observed,and the number and area of erosions were recorded . The diversity of gut microbiota in fecal samples of rats was detected . RESULTS Compared with model group ,the contents of MTL (except for processed Z. officinale low-dose group ),GAS(except for processed Z. officinale low-dose group ),EGF(except forofficinale groups) and FIB (except for Z. officinale groups),inhibitory rate of ulcer (only positive control group )were all increased significantly (P<0.05). APTT(except for Z. officinale groups),PT(only processed Z. officinale high- dose group ),TT(except for Z. officinale groups),ulcer index (except for Z. officinale groups),the number (except for Z. officinale groups)and area of erosions (except for Z. officinale groups)were shortened and decreased significantly (P<0.05); improvement effects of processed Z. officinale were better than those of the same dose of Z. officinale on EGF ,4 items of blood coagulation(except for PT ,TT,FIB of processed Z. officinale low-dose group ),ulcer index (except for processed Z. officinale low-dose group )and inhibitory rate of ulcer (P<0.05). Compared with model group ,α diversity indexes as ACE ,Shannon and Simpson of intestinal microorganisms in rats were increased significantly in processed Z. officinale group;the relative abundance of Proteobacteria was decreased significantly in processed Z. officinale group,while that of Bacteroidetes was increased significantly (P<0.05); the relative abundance of Limosilactobacillus was decreased significantly in Z. officinale group (P<0.05). CONCLUSIONS Z. officinale and processed Z. officinale can improve the symptoms of spleen -stomach deficiency and cold ,and enhance gastrointestinal function by increasing the content of GAS and MTL . Processed Z. officinale can significantly inhibit gastric ulcer of spleen -stomach deficiency and cold type ,which is related to the promotion of mucosal protection and repair ,improvement of coagulation functionand adjustment of gut microbiotadisorder .
10.Bionic optic nerve based on perovskite (CsPbBr 3) quantum-dots.
Pingjun ZENG ; Xudong JIN ; Yubo PENG ; Min ZHAO ; Zhipeng GAO ; Xiaona LI ; Jianlong JI ; Weiyi CHEN
Journal of Biomedical Engineering 2023;40(3):522-528
The bionic optic nerve can mimic human visual physiology and is a future treatment for visual disorders. Photosynaptic devices could respond to light stimuli and mimic normal optic nerve function. By modifying (Poly(3,4-ethylenedioxythio-phene):poly (styrenesulfonate)) active layers with all-inorganic perovskite quantum dots, with an aqueous solution as the dielectric layer in this paper, we developed a photosynaptic device based on an organic electrochemical transistor (OECT). The optical switching response time of OECT was 3.7 s. To improve the optical response of the device, a 365 nm, 300 mW·cm -2 UV light source was used. Basic synaptic behaviors such as postsynaptic currents (0.225 mA) at a light pulse duration of 4 s and double pulse facilitation at a light pulse duration of 1 s and pulse interval of 1 s were simulated. By changing the way light stimulates, for example, by adjusting the intensity of the light pulses from 180 to 540 mW·cm -2, the duration from 1 to 20 s, and the number of light pulses from 1 to 20, the postsynaptic currents were increased by 0.350 mA, 0.420 mA, and 0.466 mA, respectively. As such, we realized the effective shift from short-term synaptic plasticity (100 s recovery of initial value) to long-term synaptic plasticity (84.3% of 250 s decay maximum). This optical synapse has a high potential for simulating the human optic nerve.
Humans
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Quantum Dots
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Bionics
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Oxides
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Optic Nerve