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find Author "LIU Yang" 75 results
  • Retroperitoneal laparoscopic dismembered pyeloplasty for ureteropelvic junction obstruction

    Objective To investigate the clinical effect of retroperitoneal laparoscopic dismembered pyeloplasty on ureteropelvic junction obstruction (UPJO). Methods From November 2010 to September 2015, a total of 28 cases (21 males and 7 females) with ureteropelvic junction obstruction (UPJO) underwent retroperitoneal laparoscopic dismembered pyeloplasty. All the 28 patients had a previous history of different degrees of lumbar pain, which was confirmed as typical UPJO by imaging examination. Operation method: following complete renal pelvis and upper ureter isolation, the renal pelvis was clipped into a trumpet-shaped mouth, 1/3 of the upper renal pelvis was temporarily kept without section. In the inferior margin of renal pelvis, longitudinal cut procedure was operated in the ureter and across the stenotic segment in about 1–2 cm; and then, anastomosis of the ureter and the renal pelvis at the lowest was performed, to maintain the continuity of the renal pelvis and ureter. Subsequently, the stenosed segment of ureter and the dilatant renal pelvis were removed, the posterior ureteropelvic anastomosis was made with an interrupted suture, and antegrade stenting of double J tube was further performed, followed by a continuous suture of the anterior wall. Results The procedure was successfully accomplished in all patients whithout conversion to open surgery. The operating time was 90-240 minutes with the median time of 160 minutes. The estimated blood loss was 20-70 mL with the median of 50 mL. No severe surgical complication occurred in perioperative period. The 3-24 -month follow up showed that symptoms of lumbar pain were relieved or disappeared in all the incorporated patients. Postoperative radiographic examination showed no stomal stenosis at the ureteropelvic junction, and the hydronephrosis was alleviated. Conclusions Retroperitoneal laparoscopic dismembered pyeloplasty for UPJO is an effective, safe, and minimally invasive surgical technique. The key to the success of the operation is to the accurate renal pelvis clipping, tension- and torsion-free anastomosis of the lowest position of the renal pelvis and the ureter, and the reconstruction of a new funnel-shaped ureteropelvic junction.

    Release date:2017-06-22 02:01 Export PDF Favorites Scan
  • A prospectively clinical comparative study of ligation of intersphincteric fistula tract in treatment of high simple anal fistula

    ObjectiveTo explore the clinical efficacy and safety of ligation of intersphincteric fistula tract in the treatment of high simple anal fistula.MethodsA prospective collection of 72 patients diagnosed with high simple anal fistula, who admitted to the department of the author’s hospital between March 2015 and December 2017 was performed, and then the patients were divided into two groups according to the random number table method combined with the patients’ wishes: the ligation of intersphincteric fistula tract group (experimental group, 32 cases) and the low incision and high hanging group (control group, 40 cases). Comparison of indexes on the operative effect and physiological function of the sphincter in six months after operation was performed.ResultsCompared with the control group, the patients in the experimental group had short postoperative pain duration, short postoperative wound healing time, high cure rate, low recurrence rate, low initial sensory threshold, high anal resting pressure, and long anal high pressure band length, with statistically significant differences (P<0.05). However, there was no statistically significant difference between the two groups in the operation time, anal maximal contractive pressure, and rectal resting pressure (P>0.05). The results suggested that the physiological function of anus in the experimental group recovered well.ConclusionThe ligation of intersphincteric fistula tract is a safe and reliable method in the treatment of high simple anal fistula, which can be widely used in the clinic.

    Release date:2020-02-28 02:21 Export PDF Favorites Scan
  • BASIC RESEARCH AND CLINICAL APPLICATION OF CARTILAGE-DERIVED RETINOIC ACID-SENSITIVE PROTEIN

    Objective To know the basic research and the clinical application of cartilage-derived retinoic acid-sensitive protein (CD-RAP) in orthopedic and in other clinical fields. Methods The literature related to CD-RAP in basic research and clinical application were extensively reviewed. Results CD-RAP, as a protein, which is cartilage-specific,could be a marker of the joint diseases. It also can be used to monitor metastsais of melanoma. Conclusion CD-RAP test provides a new way to study repair of cartilage and metastsais of melanoma.

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  • Preliminary Study on the Biological and Biomechanicai Characteristics of Deceilularized Bovine Jugular Venous Tissue-engineered Valved Conduits

    Objective To compare the biological and biomechanical characteristics of decellularized bovine jugular venous tissue-engineered valved conduit scaffolds with that of fresh bovine jugular veins. Methods Fortyeight fresh bovine jugular veins were divided into control group and experimental group with random number table method, 24 veins in each group. There were fresh bovine jugular veins in control group, decellularized bovine jugular veins in experimental group. The veins of experimental group were treated with sodium deoxyeholate plus Triton-X-100 to decellularize the cells in valves and vessel walls. The thickness, water absorption rate, water maintenance rate, destroying strength, stretch rate of valves and vessel walls in two groups were detected. Results The endothelial cell and fibroblast of valves and vessel walls in experimental group were completely decellularized, no cell fragments were retained within the matrix scaffold; collagen fiber and elastin fiber had been preserved with intact structure and wavily arrayed; deoxyribonucleic acid content of valves and vessel walls in experimental group were decreased by 97.58%, 97.25% compared with that of control group. The thickness, water absorption rate and water maintenance rate of valves and vessel walls in experimental group were lightly increased than those of control group, but there were no significant differences between them (P 〉 0. 05). There were no significant differences in destroying strength and stretch rate of valves and vessel walls between two groups (P〉0. 05). Conclusion Decellularized bovine jugular vein scaffold has stable biological and biomechanical characteristics and it may be ideal natural fibrous matrix for developing the tissue-engineered valved conduit by host recellularization.

    Release date:2016-08-30 06:26 Export PDF Favorites Scan
  • Multi-dimensional quantitative evaluation of rapid-acting insulin analogues based on the quick guideline for drug evaluation and selection in Chinese medical institutions (the second edition)

    Objective This study aims to conduct a multi-dimensional quantitative evaluation of three rapid-acting insulin analogues, aspart (Novolog), lispro (Humalog), and glulisine (Apidra) to provide references for the selection of these drugs in medical institutions. Methods The recommended methods from the "Quick guideline for drug evaluation and selection in Chinese medical institutions (the second edition)" were employed to evaluate the pharmaceutical characteristics, effectiveness, safety, cost-effectiveness, and other attributes of the three rapid-acting insulin analogues. Results The total scores of insulins aspart (Novolog), lispro (Humalog), and glulisine (Apidra) were 73.5, 80.4, and 70.9, respectively. Insulin lispro (Humalog) had the highest score, demonstrating a prominent advantage in both effectiveness and cost-effectiveness dimensions. Conversely, insulin glulisine (Apidra) had the lowest score, with ratings in effectiveness and safety dimensions lower than those of the other two rapid-acting insulin analogs. Conclusion When selecting rapid-acting insulin analogs, healthcare institutions can choose one or more insulins, aspart (Novolog), lispro (Humalog), or glulisine (Apidra), all of which are strongly recommended, with priority given to insulin lispro (Humalog), which has the highest total score.

    Release date:2024-11-12 03:38 Export PDF Favorites Scan
  • Clinical practice of same-day surgery mode of Mammotome minimally invasive operation in ambulatory surgery center

    ObjectiveTo explore the utility and advantage of same-day surgery mode of Mammotome minimally invasive operation (MMT) in ambulatory surgery center, and summarize the key points of clinical management.MethodsFemale patients who underwent MMT in West China Hospital of Sichuan University between June and December 2019 were included. According to the operation mode, the patients were divided into same-day surgery group and routine group (routine day operation). The perioperative data were analyzed.ResultsA total of 1 297 female patients were included. Among them, 571 cases were in the same-day surgery group and 726 cases were in the routine group. There was no significant difference in baseline data, intra-operative bleeding volume, operation time, or complication rate between the two groups (P>0.05). There were significant differences in the number of masses (χ2=13.384, P<0.001), pathological type (χ2=11.990, P=0.007) and operation method (χ2=89.185, P<0.001). The length of hospital stay in the same-day surgery group was significantly shorter than that in the routine group (Z=–29.746, P<0.001); the cost of biopsy (Z=–8.549, P<0.001), the cost of surgical instruments (Z=–9.564, P<0.001), and the total cost of hospitalization (Z=–10.378, P<0.001) in the same-day surgery group were less than those in the routine group. In addition, the result of generalized estimating equation showed that the postoperative pain scores of patients in the same-day surgery group were lower than those in the routine group (P<0.001).ConclusionsThe same-day surgery mode of MMT is safe and feasible with high time economic benefits, which is worthy promoting in ambulatory surgery center. Cautions should addressed with patients’ safe and high-quality health education.

    Release date:2021-03-19 01:22 Export PDF Favorites Scan
  • Fifteen Years Follow-up of 259 Patients of Mitral Valve Replacement with Chinesemade C-L Pugesturt Tilting Disc Mechanical Valve Prosthesis

    Abstract: Objective To evaluate the early and late results of mitral valve replacement with home made C-L pugesturt tilting disc and analyse the factors which impact on the therapeutic effect,so as to elevate the operative effect. Methods A retrospective study was made on the result of clinical data and longterm followup of 259 patients who had undergone the Chinesemade C-L pugesturt tilting disc mechanical valve replacement from October 1991 to November 2006. Results The data showed that there were 12 patients died in the duration of hospital stay.The hospital mortality was 4.63% (12/259).There were no mechanical valverelated complication in the earlier postoperative period.The mortality fell to 2.59% since 1996.Among the 235 patients,12 patients were lost during the followup,the rate of followup was 95.1%(235/247).The time for followup was 9.77±3.09 years. There were 26 late deaths.During the follow-up,death associated with the deterioration of valve structure were not observed. The 5 years, 10 years and l5 years survival rates were 86.80%±2.30%, 78.20%±3.33% and 55.23%±4.34% respectively; the thromboembolic event free rates for 5 years, 10 years and l5 years were 95.95%±0.74%, 92.52%±4.11% and 80.52%±4.11% respectively; the anticoagulant related bleeding free rates for 5 years, 10 years and l5 years were 94.64%±1.75%, 89.55%±3.28% and 79.39%±4.43% respectively.There were 141 patients(67.46%) in New York Heart Association(NYHA) classⅠ, 56 patients(26.79%) in class Ⅱ, 10 patients(4.78%) in class Ⅲ and 2 patients(0.95%) in class Ⅳ. Conclusion The results of follow-up for 15 years suggest that the Chinesemade C-L pugesturt tilting disc medical mechanical valve is a reliable and safe choice for mitral valve replacement.

    Release date:2016-08-30 06:08 Export PDF Favorites Scan
  • Effect of body mass index on surgical outcomes of laparoscopic surgery for esophageal hiatal hernia: A propensity score matching study

    ObjectiveTo explore the effect of body mass index (BMI) on the outcomes of laparoscopic surgery for esophageal hiatal hernia.MethodsWe divided the patients who underwent hiatal hernioraphy and fundoplication surgery in our hospital between July 2013 and June 2018 into two groups according to the BMI: a group A, BMI ≥24 kg/m2, 77 patients, 41 males, 36 females, with an average age of 42 years; a group B: BMI<24 kg/m2, 63 patients, 38 males, 25 females, with an average age of 67 years, and the age, gender, type of hiatal hernia, score of subjective feeling of symptoms, level of reflux esophagitis were analyzed with the propensity score matching method. Fifty one patients were successfully matched in each group, and the curative effect of surgery was compared between the two groups.ResultsThere was no statistical difference in the type of surgery, intraoperative complications, postoperative complications, and hospital stay between the two groups (P>0.05). The operative time of the group A was significantly longer than that of the group B (P=0.023). There was no statistical difference between the two groups in postoperative recurrence (P=0.741).ConclusionThe operative time in overweight patients is significantly longer than that in the non-overweight patients, but it has no effect on the surgical outcomes and complications.

    Release date:2020-03-25 09:52 Export PDF Favorites Scan
  • Primary Investigation of Degradation Behavior of Acellular Porcine Aortic Valve in Vitro

    Objective To investigate the way and process of degradation behavior of acellular porcine aortic valve in vitro. Methods Acellular porcine aortic valve(n=90)were randomly divided into 3 groups (collagenase group, elastase group, control group), 30 piece in each group . Behavior of acellular porcine aortic valve was degradated with 0.05mg/ml collagenase Ⅰ, 0. 05mg/ml elastase, phosphate buffered solution in collagenase group, elastase group and control group. The histomorphology, weight loss, value of protein and hydroxyproline were observed at 3,6,9, 12, 15 and 30d after degradation. Results The behavior of acellular porcine aortic valve of collagenase group and elastase group became poorer, looser and broken gradually in degradation. The weight loss of valve, the value of protein and hydroxyproline in vehiculum became greater gradually in collagenase group and elastase group(P〈0. 01). Furthermore the effect of collagenase Ⅰ was b than elastase in degradation. Conclusion The effect of collagenase Ⅰ and elastase can degradate the acellular porcine aortic valve in vitro. Collagenase Ⅰ is b than elastase in degradation.

    Release date:2016-08-30 06:23 Export PDF Favorites Scan
  • Application of personalized strategies of enhanced recovery after surgery in anesthesia management of same-day surgery

    The strategies of individualized enhanced recovery after surgery (ERAS) are particularly important in the anesthesia management of same-day surgery. This review focuses on the perioperative management of day surgeries following the experiences of Day Surgery Center, West China Hospital, Sichuan University and different surgeries’ guidelines of ERAS, including anesthesia evaluation, preoperative education and optimization, comorbidity management, airway management, choice of technologies and drugs during anesthesia, intraoperative monitor and anesthesia management, postoperative analgesia, postoperative nausea and vomiting prevention, and postoperative management, which is significant to ensure the discharge of the patient in time for same-day surgeries.

    Release date:2022-03-25 02:32 Export PDF Favorites Scan
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