Chuan-Zhu Lv

Hainan Medical College, Haikou, Yunnan, China

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Publications (4)0 Total impact

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    ABSTRACT: To study the use of propofol sedation in patients undergoing continuous venous-venous haemodiafiltration (CVVHDF) and assess the curative effects. A retrospective study was conducted. Data from 74 patients with continuous sedation of propofol in emergency intensive care unit (ICU) from April 2009 to June 2011 were analyzed. There were 26 cases suffering from acute renal failure in CVVHDF group and 48 critical cases in non-CVVHDF group. Propofol administration duration, dose, the clearance rate and the average recovery time in both groups were analyzed, and plasma concentrations of propofol at inflow side and outflow side of CVVHDF circuit in 26 patients with CVVHDF were determined. Compared with non-CVVHDF group, it took a longer administration time (298.37±28.73 hours vs. 173.44±17.27 hours, P<0.05) and higher dose (35.89±0.76 g vs. 21.82±0.62 g, P<0.05) in CVVHDF group. There were no statistical significances on clearance rate at 2, 6, 24 hours after administration (2 hours: 13.85±1.15 ml/min vs. 14.41±1.21 ml/min, 6 hours: 5.92±0.52 ml/min vs. 6.32±0.59 ml/min, 24 hours: 4.75±0.41 ml/min vs. 5.33±0.45 ml/min) and recovery time (8.89±1.46 minutes vs. 8.47±1.37 minutes) between CVVHDF and non-CVVHDF groups (all P>0.05). Plasma concentrations of propofol at inflow side and outflow side of CVVHDF circuit were not different after propofol administration in 26 CVVHDF patients. Compared with patients in non-CVVHDF group, the patients who received propofol in CVVHDF required higher total dosage and longer delivery time to maintain a good sedation. In both two groups clearance rate of propofol and maintenance of a stable blood concentration were the same. The use of a proper dose of propofol in CVVHDF did not affect wake up time of the patients, there were no complications.
    No preview · Article · Jul 2013 · Zhonghua wei zhong bing ji jiu yi xue
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    ABSTRACT: Objective: To evaluate the in vitro and in vivo osteogenic capability of adipose-derived stromal cells (ASCs). Methods: ASCs were isolated from New Zealand white rabbits and determined by alkaline phosphatase (ALP) staining, von Kossa staining and alizarin red staining. Some specific markers of osteogenic differentiation, including ALP, osteocalcin (OCN), osteopontin (OPN) were examined by reverse transcription-polymerase chain reaction (RT-PCR). In vivo, demineralized bone matrix (DBM)-ASCs composites were implanted into the rabbit calvarial defects created at each side of the longitudinal midline. After 6 weeks, histologic properties of the transplants were analyzed. Results: ASCs were successfully induced into osteogenesis. ALP staining, von Kossa staining and alizarin red staining showed positive results. The expressions of ALP, OCN and OPN were detected in ASCs after cultivation in osteogenic medium. Extensive new bone was observed in the defects transplanted with DBM-ASCs composites. Conclusion: ASCs have the potential to differentiate into osteogenic lineage and DBM-ASCs constructs are a promising method for regeneration in bone defects.
    No preview · Article · Oct 2011 · Chinese Journal of Traumatology (English Edition)
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    ABSTRACT: Objective: Studies showed elastic stable intramedullary nailing (ESIN) of displaced midclavicular fractures has excellent outcomes, as well as high complication rates and specific problems. The aim was to discuss ESIN of midshaft clavicular fractures. Methods: Totally 60 eligible patients (aged 18-63 years) were randomized to either ESIN group or non-operative group between January 2007 and May 2008. Clavicular shortening was measured after trauma and osseous consolidation. Radiographic union and complications were assessed. Function analysis including Constant shoulder scores and disabilities of the arm, shoulder and hand (DASH) scores were performed after a 15-month follow-up. Results: ESIN led to a signifcantly shorter time to union, especially for simple fractures. In ESIN group, all patients got fracture union, of which 5 cases had medial skin irritation and 1 patient needed revision surgery because of implant failure. In the nonoperative group, there were 3 nonunion cases and 2 symptomatic malunions developed requiring corrective osteotomy. At 15 months after intramedullary stabilization, patients in the ESIN group were more satisfied with the appearance of the shoulder and overall outcome, and they benefited a lot from the great improvement of post-traumatic clavicular shortening. Furthermore, DASH scores were lower and Constant scores were significantly higher in contrast to the non-operative group. Conclusion: ESIN is a safe minimally invasive surgical technique with lower complication rate, faster return to daily activities, excellent cosmetic and better functional results, restoration of clavicular length for treating mid-shaft clavicular fractures, resulting in high overall satisfaction, which can be regard as an alternative to plate fixation or nonoperative treatment of mid-shaft clavicular fractures.
    No preview · Article · Oct 2011 · Chinese Journal of Traumatology (English Edition)
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    ABSTRACT: To evaluate the feasibility and therapeutic effect of treating sternoclavicular joint dislocation by K-wire and tension band wire fixation, and to improve the safety and stability of this technique. This study consisted of 9 cases, 6 males and 3 females with the mean age of 25 years (range, 9-62 years). The causes were traffic accident in 7 cases, falling in 1 case and fight in 1 case. The duration from injury to operation was 2 hours to 7 days. There were 5 left dislocations and 4 right dislocations; 8 anterior dislocations and 1 posterior dislocation, including one combined with left scapular fracture and one with left olecranon fracture. Open reduction and internal fixation using K-wires and tension band wires were performed to treat dislocations. All patients were followed up for 6 to 24 months, 10 months on average. According to Rockwood's rating scale on postoperative sternoclavicular joint, 8 cases achieved excellent outcomes with an average score of 13.88, and the rest case achieved a good outcome with the score of 12. Anatomical reduction was obtained in all cases. There were no such postoperative complications as severe infection, injury to blood vessel and nerve, failure of fixation, etc. Patients were all satisfied with the anatomical reduction and functional recovery. The technique of K-wire and tension band wire fixation is safe, simple, effective, less invasive and has been successfully used in orthopedic surgery. It is effective in treating sternoclavicular joint dislocation though it has some disadvantages.
    Preview · Article · Feb 2011 · Chinese Journal of Traumatology (English Edition)