Objective To study the protective effects of pre-storing glycogen on warm ischemia reperfusion injury during partial hepatectomy. Methods Thirty-eight patients were randomly divided into a trial group (n=19) and a control group (n=19). In the trial group, patients were given high concentration glucose intravenously during the 24 hours before the operation. The hepatic lesion was resected after portal triad clamping in the two groups. Liver function of all patients was measured before the operation and the first and fifth days after the operation. Normal hepatic tissue was biopsied to measured hepatic tissue glycogen contents before the operation and the change of superoxide dismutase (SOD) at the point of pre-ischemia, post-ischemia, and reperfusion 2 hour. Bcl-2 mRNA, a well known anti-apoptotic factor, was also detected using quantitative polymerase chain reaction. Results The hepatic tissue glycogen content of the trial group was significantly higher than that of the control group before the operation (Plt;0.01). Liver function of the trial group was significantly better than that of the control group on the first and fifth day after operation (Plt;0.05). There was significant difference in SOD activity between the two groups at the end of hepatic vascular occlusion and at the point of 2-hour reperfusion (Plt;0.05). Furthermore Bcl-2 mRNA expression of the trial group was notably up-regulated at the point of 2-hour reperfusion compared to the control group. Conclusion Pre-store storing glycogen might protect liver ischemia reperfusion injury caused by hepatic vascular occlusion during partial hepatectomy. The potential mechanism might be that pre-storing glycogen enhances Bcl-2 expression.
ObjectiveTo improve the calculation method of the sum of residual hepatic lobe volume and total liver volume after partial hepatectomy in rats.MethodsOne hundred and thirty-five SD rats of different body sizes were divided into five groups by completely random design. The body length, tail length, chest circumference, body weight and length of hepatic triangle lobe of the rats were measured before surgery. Then, according to the classic Higgins and Anderson methods, different lobectomies of liver were performed for each group: middle lobe + left inner lobe, left outer lobe, bilateral papillary lobe, triangular lobe, and right lateral lobe were removed; the proportion of theoretical liver resection in each group was 38.1%, 30.1%, 7.9%, 7.8% and 15.3%, respectively. The actual liver resection volume and residual liver volume were measured after surgery. we finally analyzed statistical differences of liver volume calculated by different indirect methods. In addition, the correlation analysis and regression analysis were conducted between the preoperative measured rat body surface parameters and the measured whole liver volume, so as to explore a more simple and accurate volume measurement method.ResultsThe actual proportion of liver resection in each group was 35.0%, 29.2%, 7.1%, 4.9% and 12.0%, respectively. Compared with the residual liver lobe volume actually measured, that calculated by using the indirect method of substitution of the theoretical liver resection proportion was statistically different in all the other four groups except the left outer lobe group. However, there was no statistical difference between the residual liver lobe volume actually measured and that calculated by the actual liver resection proportion in the 5 groups. In addition, in the preoperative measurement of 5 kinds of basic parameters of rats, the body length has the best correlation with whole liver volume, and the regression equation is \begin{document}$\hat Y = - 27.667 + 0.899X$\end{document}.ConclusionsThe liver volume calculated by indirect method using the actual liver resection proportion, compared with the theoretical liver resection proportion, is more accurate. Compared with the body weight, the body length has the better correlation with whole liver volume.
Objective To verify the feasibility and effectiveness of the modified fast-track surgery (FTS) in the perioperative period of open liver resection. Methods A prospective randomized controlled trial was carried out in 188 consecutive patients undergoing open liver resection between March and December 2014 in the Department of Liver Surgery of West China Hospital. The modified fast recovery procedure and standard rehabilitation procedure were compared in terms of length of hospital stay after operation, hospitalization cost, complications and readmission rate. Results A total of 188 consecutive patients were enrolled in the trial. The analysis included 87 patients in the modified fast recovery group and 89 in the standard rehabilitation group. Compared with the standard rehabilitation group, the modified fast recovery group had a shorter length of hospital stay [(5.70±1.47)vs. (7.26±1.96) days] and a lower cost [(42.7±6.7)vs. (47.3±12.5) thousand yuan], and the differences were statistically significant (P<0.05). There were 20 complication cases in the modified group and 39 in the standard group with significant difference (P=0.003). There was no significant difference in the rate of readmission between the two groups (P=1.000). Compared with the standard group, patients in the modified group had less pain 8 hours, the 1st and 2nd days after surgery, better postoperative activities of daily living, more initiative cough times and off-bed activity times, longer duration of movement, and earlier bowel recovery and exhausting, and all the above differences were significantly different (P<0.05). Stepwise regression analysis showed that postoperative complications and bowel recovery and exhausting time were independent related factors for postoperative hospital stay (P<0.001). Conclusions Multimodal analgesia-based fast recovery procedure is feasible and effective in the perioperative period of partial hepatectomy. It can shorten the time of hospitalization and reduce the cost of hospitalization.
Objective To investigate the advance in surgical treatment of inferior pole fracture of patella and to explore the existing problems and further research directions. Methods Domestic and foreign l iterature in recent years on patella fracture was extensively reviewed, the surgical treatment of inferior pole fracture of patella was summarized by combining the research findings with cl inical experience. Results The surgical treatment of inferior pole of patella fractures included retaining the integrity of the patella and partial patellectomy of inferior pole of patella and extending knee installationreconstruction. There were kinds of ways to retain the integrity of the patella, such as circular wire fixation, tension bandfixation, NiTi-patella concentrotor fixation, basket plate fixation, reforming McLaughl in way and polydioxanone suture netfixation; the latter category is partial patellectomy and extensor device reconstruction. Every surgical way had its advantages and l imitations. Conclusion Most studies tend to retain the integrity of the patella, but some researches have shown that partial resection of inferior pole of patella had no significant effect on knee function. It is important to obtain the security excisional range and elongation range postoperative by experiment for regulating the treatment of comminuted fractures of inferior pole of patella.
Thirty-six partial hepatectomies for patients with symptomatic intrahepatic stones is reported.Partial liver resection should be done when the liver containing strictrue(s),dilated ducts and stones.Meanwhile,additional procedures should be performed togather with partial hepatectomy,i,e,common duct exploration and drainage,cholangiotomy and cholangioplanty,and cholangeoenterostomy,according to the location of stones and ductal strictures.Postoperative long-term follow-up in this series showed that the results of 86.2% of patients were satiffactory.Partial hepatectomy can be considered as a better treatment of choice for the stones confined to one segment or lobe of liver or combined with multiple strictures of ducts.
ObjectiveTo compare postoperative efficacy of thoracoscopic partial pneumonectomy with or without thoracic drainage tube postoperatively.MethodsThe PubMed, Wanfang database, CNKI and Web of Science from January 2000 to August 2020 were searched by computer to collect randomized controlled studies (RCT), cohort studies and case-control studies on the efficacy of chest drainage tube placement versus no placement after thoracoscopic partial pneumonectomy. Two reviewers independently screened articles and extracted data to evaluate the risk of literature bias. Meta-analysis was performed with RevMan software.ResultsA total of 15 articles were included, including 1 RCT and 14 cohort studies. A total of 1 524 patients were enrolled, including 819 patients in the test group (no postoperative chest drainage tube group) and 705 patients in the control group (postoperative chest drainage tube group). Compared with the control group, the length of hospital stay in the test group was shorter (MD=–1.3, 95%CI –1.23 to –0.17, P<0.000 01) and the incidence of postoperative pneumothorax was higher (RD=0.06, 95%CI 0.01 to 0.10, P=0.01). There was no significant difference between the two groups in operation time (MD=–2.37, 95%CI –7.04 to 2.30, P=0.32), the incidence of postoperative complications (RR=2.43, 95%CI 0.79 to 1.80, P=0.39), the reintervention rate of postoperative complications (RD=0.02, 95%CI=–0.00 to 0.04, P=0.05), postoperative subcutaneous emphysema (RD=0.02, 95%CI –0.01 to 0.06, P=0.20) and the incidence of postoperative pleural effusion (RD=0.04, 95%CI –0.00 to 0.09, P=0.10) .ConclusionCompared with the patients with chest drainage tube placement after thoracoscopic partial pneumonectomy (the control group), the test group can shorten the hospital stay. Although the incidence of postoperative pneumothorax is higher than that of the control group, the operation time, incidence of postoperative subcutaneous emphysema and in-hospital complications, and reintervention rate of in-hospital complications are not statistically significant between the two groups. Therefore no chest drainage tube may be placed after partial pneumonectomy.
ObjectiveTo objectively evaluate the effectiveness of the ventricular fold pull-down combined with strip myofascial flap to repair laryngeal defect after early glottic carcinoma operation with glottic morphological parameters and voice parameters. MethodsBetween January 2008 and December 2012, 47 patients with early glottic carcinoma and anterior commissure involvement underwent partial laryngectomy. All patients were male, aged from 60 to 75 years (mean, 68.5 years). The disease duration was 4-11 months (mean, 7.2 months). According to American Joint Committee on Cancer (AJCC) TNM criteria, 28 cases were classified as T1aN0M0, 14 cases as T1bN0M0, and 5 cases as T2N0M0. Laryngeal defect after resection of tumor was repaired by ventricular fold pull-down combined with strip myofascial flap. At 1 day before operation and at 1 year after operation, multilayer spiral CT was used to scan larynx, to measure and compare the anteroposterior diameter of vocal area, the distance between both sides of the vocal process, and the thickness of soft tissue of vocal area, and the effect of combined soft tissue flap was objectively assessed in laryngeal morphology reconstruction. The actual voice parameters[including F0, Jitter, Shimmer, normalized noise energy (NNE), and maximum phonatory time (MPT)] were tested and compared, and the effect of the combined soft tissue flap on postoperative laryngeal pronunciation was evaluated. ResultsPostoperative pathological examination revealed well-differentiated squamous cell carcinoma in 38 cases, and moderately-differentiated squamous cell carcinoma in 9 cases; no tumor was found in the resection margin. Healing of neck incision was obtained in all patients at 7-9 days after operation. Forty-four cases were decannulated at 9-11 days after operation and the remaining 3 cases were decannulated at 3 weeks after operation. Oral feeding usually started in all cases at 3-4 days after operation. All patients were followed up 1 year. At 1 year after operation, the anteroposterior diameter of vocal area was significantly reduced when compared with preoperative one (t=15.161, P=0.000); the distance between both sides of the vocal process and the thickness of soft tissue of vocal area had no significant changes (P > 0.05). Compared with preoperative ones, there were significant differences in Shimmer, NNE, and MPT (P < 0.05), but no significant difference was found in F0 and Jitter (P > 0.05) at 1 year after operation. ConclusionVentricular fold pull-down combined with strip myofascial flap can repair laryngeal defect effectively after partial laryngectomy and maintain the effective airway after operation. It not only has no effect on postoperative laryngeal morphology, but also can be used as new laryngeal voice vibration body.
【Abstract】 Objective To compare the short-term effects of arthroscopic partial meniscectomy in treating medial versuslateral meniscus injuries. Methods From January 2003 to January 2006, 207 patients with meniscus injury(without intraarticularligament injury) underwent arthroscopic partial meniscectomy. The medial meniscus injury group included 115 cases, 50males and 65 females; aged 14 to 78 years(mean 46.9 years); 66 left knees and 49 right knees. Twenty-six cases had injury histories,the delayed time from injury to surgery ranged from 6 d to 6 months (mean 2.1 months). The lateral meniscus injury group included92 cases, 18 males and 74 females; aged 16 to 62 years (mean 41.1 years); 57 left knees and 35 right knees. Twenty-four caseshad injury histories, the delayed time from injury to surgery ranged from 9 d to 6 months (mean 1.9 months). Lysholm score systemwas applied and the scors of pre- and post-operation and were compared between two groups. Results The period of followupranged from 12 to 45 months (mean 31.5 months). In medial meniscus injury group and lateral meniscus injury roup, theLysholm score increased from 61.3±16.9 and 57.4±17.6 preoperation to 95.0±7.9 and 93.3±7.4 postoperation respectively. Therewas statistically significant difference between preoperation and postoperation (P lt; 0.01), and there was no statistically significantdifference between two groups（P gt; 0.05）. The excellent and good rates for function of knee joint were 97.39% (excellent in 107cases, good in 5 cases and fair in 3 cases) in medial meniscus injury group and 100%(excellent in 80 cases and good in 12 cases)in lateral meniscus injury group. Conclusion Arthroscopic partial meniscectomy is a safe and effective treatment for meniscusinjury, there is no diference in short-term effects in treating medial versus lateral meniscus injuries.