The purpose of this paper is to report the research and design of control system of magnetic coupling centrifugal blood pump in our laboratory, and to briefly describe the structure of the magnetic coupling centrifugal blood pump and principles of the body circulation model. The performance of blood pump is not only related to materials and structure, but also depends on the control algorithm. We studied the algorithm about motor current double-loop control for brushless DC motor. In order to make the algorithm adjust parameter change in different situations, we used the self-tuning fuzzy PI control algorithm and gave the details about how to design fuzzy rules. We mainly used Matlab Simulink to simulate the motor control system to test the performance of algorithm, and briefly introduced how to implement these algorithms in hardware system. Finally, by building the platform and conducting experiments, we proved that self-tuning fuzzy PI control algorithm could greatly improve both dynamic and static performance of blood pump and make the motor speed and the blood pump flow stable and adjustable.
Algorithms ; Assisted Circulation ; instrumentation ; Fuzzy Logic ; Heart-Assist Devices ; Magnetic Phenomena ; Magnetics

Objective To determine whether dopamine D5 receptor (D5R) regulates the development of dilated cardiomyopathy (DCM) by inhibiting oxidative stress.Methods We developed heart-specific hD5 mutant (α-MHC-hD5F173L) and wild type (α-MHC-hD5WT) transgenic mice.The NOX2 expression and ROS production were tested in the transgenic mice at three month of age.The α-MHC-hD5F173L mice were treated with either NADPH oxidase inhibitor Apocynin (1mmol/kg/day) or phosphate-buffered saline (PBS) as control by intraperitoneal injection for 4 weeks.After then, the indexes of heart function were measured.The hD5WT and hD5F173L were transfected respectively in rat H9C2 cells, in which ROS production and NOX2 expression were detected at basal level.Results The ROS production and NOX2 expression were higher in the heart of α-MHC-hD5F173L than α-MHC-hD5WT mice.Apocynin treatment improved the heart function of α-MHC-hD5F173L mice.NOX2 expression and ROS production were higher in hD5F173L than hD5WT transfected H9C2 cells.Conclusions Dopomine D5 receptor may prevent DCM development by inhibiting oxidative stress.

Background The diseases of neuro-ophthalmology are common,which can influence the quality of patients' life seriously.The 39-item National Eye Institute Visual Function Questionnaire (NEI VFQ-39) is an instrument to assess self-reported visual impairment in studies of vision.However,until now,no studies have been performed to specifically assess the vision-related quality of life in persons with diseases of neuro-ophthalmology.Objective To evaluate vision-related quality of life for neuro-ophthalmology inpatients through the NEI VFQ-39,for the better treatment and nursing for them.Methods Ninety-seven neuro-ophthalmology inpatients were scheduled in research from June 1 to September 30,2012,and we collected all the clinical datas and the Chinese version NEI VFQ-39.The NEI VFQ-39 subscale item scores were compared among subgroups divided by monocular or binocular incidence,diseases and best corrected visual acuity(BCVA),and correlation analysis of the NEI VFQ-39 scores and BCVA for better-seeing and worse-seeing eyes was performed.Results The mean age of scheduled patients was (36.6±14.4)years,with no difference in gender.The mean composite score of VFQ-39 was 57.36(46.50,73.38),mental health subscale score was lowest [45.00 (35.00,60.00)].In the four eye diseases groups,except for eye pains,degree of dependence,periphery vision,anterior ischemic optic neuropathy (AION) group had lower scores compared with the other three groups,but there were no statistical significances among the four groups (all at P＞0.05).Except for eye pains,patients with monocular incidence had better scores than those with binocular incidence,with statistical significant significances between them(all at P＜0.05).Patients with BCVA in the better-seeing eye ＞ 20/32 had better scores than the other two groups,compared with the BCVA in the better-seeing eye ＜20/200 group,except for overall health and eye pains,cornpared with the 20/200 ≤ BCVA in the better-seeing eye ＜20/23 group,except for eye pains,social activity and color vision,and the rest subscale scores had significant differences among the three groups(all at P＜0.05).NEI VFQ-39 scores had positive correlations with the BCVA for better-seeing and worse-seeing eyes,and had strong correlations with the BCVA for better-seeing.Conclusions Neuro-ophthalmology diseases have serious influences on patients' visual function and quality of life.The quality of life has direct correlation with BCVA,so improving their visual function is helpful to their quality of life.

Objective To study the methodology and results of the auricle repair with expanded skin flap in mastoid process area and Medpor support in children with congenital malformation.Methods Thirty cases of congenital malformation were enrolled with age ranged from 5～16 years old.Whole auricles were all reconstructed with an expanded skin flap in mastoid process area and Medpor support.Resuits In all successful cases.their repaired auricles had the natural complexion and profile,and the positions were symmetric with healthy one,but in 2 cases(age group of 11-16 years),the expanded skin flap had less skin grafting.Conclusion It is suggested that optional operation time might be selected before 10 years old,because their psychological trauma could be avoided owing to microtia and in that age the size of the expanded flap is larger enough to reconstruct the ear as their auricle iS well-developed.

Severe traumatic brain injury (sTBI) as the most common emergency severe syndrome in neurosurgery has a high mortality and poor prognosis. Decompressive craniectomy is the first treatment choice for sTBI. The reverse question mark incision was usually adopted in decompressive craniectomy, but some scholars also suggest using the n-type incision and Kempe incision. Although the curative effect is remarkable when using the above incisions, the incidence of postoperative complications is high, such as cerebrospinal fluid leakage, poor wound healing and flap ischemic necrosis. Moreover, the advantages and disadvantages of different incisions are not clear. Therefore, some scholars proposed retroauricular incision decompressive craniectomy for sTBI patients because this incision that retains blood supply through a new flap can provide better decompression effect and reduce incision-related complications. The authors review the research progress in retroauricular incision in aspects of the methods, indications and its advantages and disadvantages in constrast with other incisions, so as to provide a theoretical basis for the selection of incision for decompressive craniectomy in sTBI patients.

Objective:To investigate the relationship between hepatic venous pressure gradient (HVPG) and parameters of Doppler ultrasound in patients with pyrroidine alkaloid-related hepatic sinusoidal obstruction syndrome (PA-HSOS).Methods:From February 17, 2017 to April 22, 2020, the clinical data of 68 patients with PA-HSOS who underwent HVPG manometry and Doppler ultrasound examination at Drum Tower Hospital, the Affiliated Medical College of Nanjing University were retrospectively analyzed, which included HVPG, Drum Tower severity scoring (DTSS), time from PA-HSOS related symptoms appeared to diagnosis after taking pyrroidine alkaloid (hereinafter referred to as diagnosis time), and parameters of Doppler ultrasound induding portal vein trunk diameter (PD), peak portal vein velocity (PPV), splenic vein trunk diameter (SD) and peak splenic vein velocity (PSV). Receiver operating characteristic curve (ROC) was used to determine the optimal cut-off value of HVPG for predicting non-response to anticoagulation therapy. Binary logistic regression was used to analyze the independent risk factors for non-response to anticoagulation therapy, and Kaplan-Meier survival curve was used to analyze the prognostic survival rate of patients with different HVPG levels. Unitary linear regression was applied to analyze the correlation of HVPG with PD, PPV, SD and PSV in patients with different HVPG levels, patients with mild, moderate and severe DTSS, and patients with diagnosis time >1 month or ≤ 1 month. Chi-square test was used for statistical analysis.Results:The results of ROC analysis showed that the optimal cut-off value of HVPG for predicting non-response to anticoagulant therapy was 20.165 mmHg(1 mmHg=0.133 kPa). The result of multivariate analysis indicated that high HVPG (HVPG>20.165 mmHg) was an independent risk factor for predicting non-response to anticoagulant therapy ( OR (95% confidence interval)=6.039(1.466 to 24.869), P=0.013). Kaplan-Meier survival curve demonstrated that prognostic survival rate of patients with high HVPG was lower than that of patients with low HVPG (HVPG≤20.165 mmHg) (78.4% vs.96.8%), and the difference was statistically significant( χ2=4.74, P=0.030). The results of unitary linear regression analysis showed that there was a negative correlation between HVPG and PPV in 68 patients with PA-HSOS( r=-0.330, P=0.006); HVPG was positively correlated with PD and SD in patients with high HVPG ( r=0.540 and 0.341, P=0.001 and 0.039); there was a negative correlation between HVPG and PSV in patients with mild DTSS ( r=-0.519, P=0.019), HVPG was negatively correlated with PPV in patients with moderate DTSS ( r=-0.400, P=0.014). In patients with diagnosis time ≤1 month, there was a negative correlation between HVPG and PPV ( r=-0.391, P=0.010). Conclusions:HVPG can assist in judging the response to anticoagulation therapy and the prognosis of patients with PA-HSOS. Parameters of Doppler ultrasound can help to assess the degree of HVPG elevation in patients with PA-HSOS under certain conditions.

Objective:To investigate the effects of Neibu Huangqi Decoction combined with Kangfuxin Liquid on wound healing after hemorrhoid fistula.Methods:Randomized controlled trial. A total of 90 patients with hemorrhoid fistula surgery in Tangshan Hospital of Traditional Chinese Medicine from January 2020 to June 2021 were selected as the observation objects and divided into 2 groups by random number table method, with 45 cases in each group. The control group was treated with Kangfuxin Liquid after surgery, and the observation group was treated with Neibu Huangqi Decoction. Both groups were treated continuously for 14 days. Wound symptom score was performed before and after treatment. The levels of TNF-α, IL-6 and IL-8 were determined by ELISA. The wound healing time was observed and the wound healing rate was calculated. Adverse reactions were recorded and clinical efficacy was evaluated.Results:The total effective rate was 93.33% (42/45) in the observation group and 66.67% (30/45) in the control group, with statistical significance ( χ2=9.89, P=0.002). After treatment, the scores of pain [(0.63±0.14) vs. (0.97±0.27), t=7.50], exudation [(0.67±0.12) vs. (1.09±0.31), t=8.48], edema [(0.78±0.17) vs.(1.25±0.36), t=7.92], pruritus [(0.78±0.20) vs. (1.32±0.33), t=9.39] were lower than those in the control group ( P<0.01); serum TNF-α [(33.46±2.86) μg/L vs. (45.78±3.92) μg/L, t=25.39], IL-6 [(41.86±5.84) μg/L vs. (56.12±6.75) μg/L, t=15.98], IL-8 [(27.40±3.58) ng/L vs. (36.16±3.84) ng/L, t=16.69] were lower than those in the control group ( P<0.01). The wound healing time of the observation group was shorter than that of the control group ( t=8.60, P<0.01), and the wound healing rate was higher than that of the control group ( t=24.65, P<0.01). During treatment, the incidence of adverse reactions was 11.11% (5/45) in the observation group and 6.67% (3/45) in the control group, without statistical significance ( χ2=0.14, P=0.711). Conclusion:Neibu Huangqi Decoction combined with Kangfuxin Liquid can promote wound healing, reduce inflammatory cytokines, relieve pain and exudation, improve clinical efficacy, and have few adverse reactions.

BACKGROUND:Clinically,the most dangerous and serious complication of artificial joint replacement is periprosthetic infections.It is urgent to find a way to prevent periprosthetic infections after artificial joint replacement. OBJECTIVE:To study the effect of povidone-iodine on muscle,blood vessel,fat and bone of rabbits after immersion and flushing. METHODS:Forty male New Zealand rabbits aged 10 weeks were selected.The left hind leg of each rabbit served as the experimental group and the right hind leg served as the control group.After anesthesia,the hind limbs of each rabbit were cut open to expose the muscle,blood vessels,fat and bone.The control group was soaked and flushed with normal saline inside the surgical incision,while the experimental group was soaked and flushed with povidone-iodine inside the surgical incision.After being soaked in povidone-iodine for 0,1,3,5 minutes,10 rabbits were randomly selected and executed to collect wound tissue samples.The samples were made into pathological slices for hematoxylin-eosin staining observation as well as statistical analysis and comparison of cell counts. RESULTS AND CONCLUSION:Compared with the control group,the muscle,blood vessels,fat and bone after immersion and flushing with povidone-iodine showed no obvious difference in cell structure,morphology and number under microscope.The paired t-test was used to explore the difference between the control and experimental groups,and the paired data did not show any difference(P＞0.05).It is suggested that povidone-iodine shows no significant difference from normal saline after immersion and flushing of rabbit tissues such as muscle,blood vessels,fat and bone,indicating that povidone-iodine solution as an intra-incisional antiseptic is safe and effective.

Chronic Urticaria(CU)is a common skin disease involving autoimmunity and allergies,which brings a heavy burden to patients and society.The theory of traditional Chinese medicine"the Lung is combined with the Large Intestine,and the symptoms of large intestine can be reflected from the skin"has long shown that there is a close physiological and pathological relationship between the function of the Large Intestine and the skin.With the modern advancement of the"gut-skin axis"theory,the correlation between gut microbiome and CU has gradually become an emerging focus of research.Adjusting the imbalance of gut microbiome would be a new trend in the clinical treatment of CU.Acupuncture has a beneficial effect of regulating the gut microbiome,and the definite curative effect on CU.Therefore,this article summarized the research progress between the gut microbiome and CU in recent years,in order to discuss the feasibility of acupuncture to treat CU by regulating the gut microbiome,and provide a new idea for the mechanism research of acupuncture in the treatment of CU from the perspective of"treating skin from intestine".

Objective To investigate the pattern of nodal recurrence after curative resection in adenocarcinoma of the gastroesophageal junction ( AGE ) , and to provide a basis for delineation of the radiation range in the high-risk lymphatic drainage area.Methods A retrospective analysis was performed in 78 patients with locally advanced AGE who were newly treated in our hospital from January 2009 to December 2013 and had complete clinical data.All patients received curative resection and were pathologically diagnosed with stage T3/T4 or N (+) AGE.Those patients were also diagnosed with SiewertⅡor Ⅲ AGE by endoscopy, upper gastroenterography, macroscopic examination during operation, and pathological specimens.None of the patients received preoperative or postoperative radiotherapy.All patients were diagnosed by imaging with postoperative nodal recurrence.The computed tomography images of those
patients were accessible and had all the recurrence sites clearly and fully displayed.Results The median time to recurrence was 10 months ( 1-48 months) , and 90%of the recurrence occurred within 2 years after surgery.The lymph nodes with the highest risk of recurrence were No.16b1( 39%) , No.16a2( 37%) , No.9 (30%), and No.11p (26%), respectively.There was no significant difference in the recurrence rate within each lymphatic drainage area between patients with SiewertⅡandⅢAGE ( P=0.090-1.000) .The lymph nodes with the most frequent recurrence were No.16b1, No.16a2, No.9, No.16b2, No.11p, and No.7 in patients with stage N3 AGE and No.11p, No.16b1, No.16a2, No.9, No.8, and No.7 in patients with stage non-N3 AGE.Patients with stage N3 AGE had a significantly higher recurrence rate in the para-aortic regions (No.16a2-b2) than those with stage non-N3 AGE (67%vs.33%, P=0.004, OR=4.00, 95% CI=1.54-10.37) .Conclusions The lymph nodes with the highest risk of recurrence are located in the celiac artery, proximal splenic artery, and retroperitoneal areas ( No.16a2 and No.16b1) in patients with SiewertⅡorⅢlocally advanced AEG.Moreover, patients with stage N3 AGE have a higher risk of retroperitoneal recurrence.The above areas should be involved in target volume delineation for postoperative radiotherapy.