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Prostate cancer is the most common malignant tumor in the male urogenital system. Transrectal ultrasound has become a commonly used method for the diagnosis and biopsy of prostate cancer due to its simplicity, economy, and non radiation. This article will discuss the current application status and progress of traditional transrectal ultrasound, color doppler ultrasound, ultrasound imaging, elastic ultrasound, micro ultrasound, tissue scanning, and multimodal ultrasound in the diagnosis of prostate cancer.
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The typical manifestations of primary aldosteronism (PA) are hypertension with or without hypokalemia, high aldosterone, and low renal level. However, PA with normal blood pressure is rare in clinical practice. This article reported the diagnosis and treatment of a patient with subclinical PA, admitted for "adrenal accidental tumor" with normal blood pressure and serum potassium. We summarized and analyzed the clinical characteristics and treatment strategies, in order to provide some reference for clinicians.
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Objective:To explore the value of shear wave elastography imaging(SWE) in the diagnosis of renal allograft fibrosis and analyze its advantages and limitations.Methods:The renal allograft of 61 patients who underwent renal allograft biopsy from June 2019 to April 2020 in the First Affiliated Hospital of Sun Yat-sen University were included in this study. According to the Banff classification, there were 51 patients with mild-degree fibration(interstitial fibrosis/tubular atrophy, IFTA 0-Ⅰ), and 29 patients with moderate or severe-degree fibration(IFTA Ⅱ-Ⅲ). Two-dimensional ultrasound, color Doppler flow imaging, SWE and kidney function test performed. All the results were compared between the two groups. Diagnostic performance was evaluated by receiver operating characteristic (ROC) curve using pathology as gold standard. The sensitivity, specificity, positive predictive value and negative predictive value were calculated for the diagnosis of moderate or severe-degree fibration.Results:Compared to mild-degree fibration group, creatinine( P<0.001), glomerular filtration rate( P<0.001), RI of arcuate arteries( P=0.022) and SWE value( P<0.001) significantly increased in the moderate or severe-degree fibration group. There were significant correlations between IFTA and creatinine ( r s=0.488, P<0.001), glomerular filtration rate ( r s=-0.452, P<0.001), RI of arcuate arteries( r s=0.228, P=0.042), SWE value( r s=0.584, P<0.001). Taking the cutoff value of SWE value deduced by ROC curve as 21.7 kPa, the area under ROC curve was 0.827. The sensitivity, specificity, positive predictive value and negative predictive value were 86.2%, 74.5%, 61.0% and 89.7%, respectively. Conclusions:There is a good correlation between the SWE value and the degree of fibrosis in the transplanted kidney. SWE can be used to distinguish mild from moderate or severe fibrosis of renal allograft, providing a potential noninvasive method for the assessment of kidney allograft fibration.
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Objective:To establish a model based on two-dimensional shear wave elastography (2D-SWE) for predicting post-hepatectomy liver failure (PHLF) among patients with hepatocellular carcinoma (HCC).Methods:One hundred and one consecutive patients with HCC undergoing hepatectomy from August 2018 to July 2019 were enrolled prospectively in the First Affiliated Hospital of Sun Yat-Sen University. Laboratory tests, shear wave elastography in liver parenchyma, and abdominal contrast-enhanced computed tomography (CT) or magnetic resonance imaging (MRI) were performed preoperatively. Liver functional reserve, liver stiffness (LS), and tumor-related imaging parameters were assessed. PHLF was defined according to the definition of International Study Group of Liver Surgery Recommendations (ISGLS). A predictive model was developed by logistic regression analysis and the performance thereof was evaluated by receiver operating characteristic (ROC) curve analysis and Hosmer-Lemeshow test.Results:PHLF occurred in 39 patients (38.9%). Logistic regression analysis identified that international normalized ratio ( OR=1.09, P=0.026), LS( OR=1.297, P=0.004) and the largest nodule diameter( OR=1.191, P=0.015) were independent risk factors of PHLF.The area under curve (AUC) of the model was 0.842(95% CI =0.763-0.921), which was significantly higher than those of ALBI score, MELD score and Child-Pugh score (AUC 0.626-0.688, P<0.05). The model also showed good calibration in Hosmer-Lemeshow test ( P=0.498). Conclusions:A model based on 2D-SWE provides good preoperative prediction of PHLF among patients with HCC, which might have the potential in better customizing treatment strategy in those patients.
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Objective:To compare the characteristics of ultrasonic imaging between pancreatic neuroendocrine tumor (pNET) and pancreatic ductal adenocarcinoma (pDAC), and to identify the ultrasonic characteristics in different pathological grades of pNETs.Methods:The ultrasonic imaging data of 67 patients with pathologically confirmed pNETs and 82 patients with pathologically confirmed pDACs from the First Affiliated Hospital of Sun Yat-sen University from January 2010 to March 2019 were retrospectively analyzed. Differences in conventional ultrasonic characteristics and CEUS manifestations between the two groups were compared. Fifty pNET lesions were confirmed with pathological grades G1, G2 and G3.Ultrasonic characteristics of the 3 pathological grades were also compared.Results:①Comparison of ultrasonic imaging characteristics between pNET and pDAC showed that: there were statistically significant differences between the two groups in lesion distribution, lesion size, echo, boundary, signal of blood flow, calcification, dilatation of main pancreatic duct, liver metastasis, vascular involvement, CEUS enhancement in the three phases and non-enhancement area of necrosis (all P<0.05). The binary logistic regression model was built including the signal of blood flow, dilation of main pancreatic duct, liver metastasis and enhancementin arterial and venous phases. The diagnostic model for pNET had 0.988 in sensitivity, 0.791 in specificity, and the area under the ROC curve at 0.951, 95% CI being (0.920, 0.983). ②Comparison of the characteristics of ultrasonic imaging between the pNETs derived from the three pathological grades: there were statistically significant differences among the three groups with the liver metastasis and the enhancement in venous phase (both P<0.05). Only 10.5% (2/19) of G1 pNETs had liver metastasis, while 47.8% (11/23) of G2 and 62.5% (5/8) of G3 pNETs had liver metastasis. In venous phase, 78.9% (15/19) of G1 pNETs showed hyper- or iso- enhancement, while 100% (8/8) of G3 lesions showed hypo-enhancement. Conclusions:The combination of features from multiple ultrasonic imaging may help to differentiate pNET from pDAC. There are certain differences in ultrasonic imaging features in pNETs at different pathological grades.
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Objective:To retrospectively summarize and evaluate the efficiency and safety of percutaneous ultrasound-guided radiofrequency ablation (RFA) for adrenal metastasis (AM) from hepatocellular carcinoma (HCC).Methods:From October 2009 to September 2018, 16 patients with AM from HCC who underwent percutaneous RFA in the First Affiliated Hospital of Sun Yat-Sen University were enrolled in the study. The complete ablation and local tumor progression rates were elevated, and the side effects and complications were summarized.Results:The median ablation time of AM was 16 min. The complete ablation rate was 87.5% (14/16). After the follow-up period of 3 to 55 months, among the patients with complete ablation, there were 3 patients were detected local tumor progression (LTP), the LTP rate was 21.4% (3/14). As for the side effects and complications, 3 patients were diagnosed as hypertension crisis (3/16, 18.8%), 2 showed reduced heart rate and 1 of them exhibited frequent premature ventricular contraction which resulted in termination of ablation. There was no ablation-related death or adrenal failure.Conclusions:Percutaneous US-guided RFA is safe and effective in the treatment of AM originated from HCC.
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Objective To compare three-dimensional contrast-enhanced ultrasound ( 3DCEUS) fusion imaging and computed tomography ( CT ) fusion imaging in evaluating ablation margin ( AM ) after radiofrequency ablation ( RFA) for hepatocellular carcinoma ( HCC) . Methods The 3DCEUS images of 60 patients before and after RFA were collected . The AM was evaluated by the self-developed 3DCEUS fusion imaging technique . The consistency of AM evaluation was compared between 3DCEUS and CT fusion imaging . The risk factors of local tumor progression ( LTP) including AM were analyzed . Results The registration success rate of 3DCEUS fusion imaging was 96 .7％ ( 58/60) . Thirty-one cases were in the AM<5 mm group ,and 27 cases were in the AM ≥5 mm group . The consistency of AM evaluation between 3DCEUS and CT fusion imaging was good ( Kappa coefficient = 0 .895 , P < 0 .001) . During a follow-up period ranging 4 .2 to 18 months ,LTP was identified in 5 tumors (8 .6％ ,5/58) .The incidence of LTP with the AM<5 mm was higher than that with the AM ≥5 mm ( P =0 .033) . Conclusions 3DCEUS fusion imaging is feasible for AM evaluation immediately after RFA with high consistency with CT fusion imaging . AM<5 mm evaluated on 3DCEUS fusion immediately after RFA is a risk factor for LTP .
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Objective@#To analyze the status and related factors of adverse pregnancy outcomes in pregnant women with syphilis infection in Guangxi Zhuang Autonomous Region.@*Methods@#A total of 9378 pregnant women with syphilis infection who were diagnosed by Guangxi medical and health care institutions at all levels and were registered in the national "Management information system for mother-to-child transmission of AIDS, syphilis and hepatitis B" . The delivery date of these pregnant women were from 1 January 2014 to 31 December 2018, and their demographic characteristics, treatment, non-treponema pallidum titer, and pregnancy outcomes were collected. Multivariate logistic regression model was used to analyze the related factors of adverse pregnancy outcome.@*Results@#The age of the pregnant women with syphilitic infection was (30.05±6.07) years old. There were 1 184 cases with an adverse pregnancy outcome. The incidence of adverse pregnancy outcome was 12.63%, and 83.30% (7 812 cases) of patients received syphilis treatment, of which 50.32% (3 931 cases) were treated with standard treatment. The results of multivariate analysis showed that, the probability of an adverse pregnancy outcome for a 35-year-old was higher than those of the <25 year old [OR (95%CI)=1.37(1.13-1.67)]. The possibility of the occurrence of an adverse pregnancy outcome in 1-2 times of delivery was lower than that of 0 times of delivery in the past, with the OR (95%CI) value was 0.81 (0.70-0.94). Compared with those who tested for syphilis in the early stages of pregnancy, patients with gestational weeks ≥ 28 weeks of initial examination were more likely to have adverse pregnancy outcomes, with the OR (95%CI) value was 1.54 (1.26-1.88). Compared with the first test titer level was <1:8, the probability of an adverse pregnancy outcome was higher in the titer of ≥1:8, with the OR (95%CI) value was 1.33 (1.12-1.57). There was a higher probability of an adverse pregnancy outcome in the untreated patients compared to the treatment of the syphilitic, with the OR (95%CI) value was 1.41(1.19-1.68). Patients with unregulated treatment were more likely to have adverse pregnancy outcomes than those with standardized treatment, with the OR (95%CI) value was 1.27 (1.09-1.47).@*Conclusion@#Gestational weeks of first examination in pregnant women with syphilis infection, the first test titer, and the treatment condition were closely related to the occurrence of the adverse pregnancy outcome. Pregnant women with syphilis infection without treatment and unstandardized treatment were more likely to have adverse pregnancy outcomes than those of treatment and standardized treatment.
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Objective@#To study the relationships between microscopic marginal extensions and tumor types, and ultrasonic characteristics of malignant liver tumors.@*Methods@#Two-dimensional ultrasonography, contrast-enhanced ultrasonography and ultrasound-guided biopsy of hepatic tumors and surrounding hepatic tissues were performed in 78 patients with malignant liver tumor. Pathological microscopic extensions were observed after hematoxylin-eosin staining of biopsy specimens.@*Results@#The microscopic marginal extension rates of hepatocellular carcinoma (HCC), intrahepatic cholangiocarcinoma (ICC) and metastatic liver cancer (MLC) were 62.5%(30/48), 87.5%(7/8), and 91.0% (20/22), respectively. For tumors with well-defined and poorly-defined two-dimensional ultrasound boundary, microscopic marginal extension rates were 50%(14/28), and 86%(43/50). Tumor type and two-dimensional ultrasound boundary were independent predictors for microscopic extension rate (P<0.05). The median microscopic extension distances of HCC, ICC and MLC were 1.0(0, 3.0)mm, 4.0(2.3, 4.0)mm, and 2.0(1.8, 4.0)mm, respectively. The distance of microscopic extension increased with tumor size. Tumor type and tumor size were independent predictors for the distance of microscopic extension (P<0.05).@*Conclusions@#ICC, MLC, and tumors with larger diameter or poorly-defined two-dimensional ultrasound boundary have a larger distance of microscopic extension.
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Objective To study the relationships between microscopic marginal extensions and tumor types ,and ultrasonic characteristics of malignant liver tumors . Methods Two‐dimensional ultrasonography , contrast‐enhanced ultrasonography and ultrasound‐guided biopsy of hepatic tumors and surrounding hepatic tissues were performed in 78 patients with malignant liver tumor . Pathological microscopic extensions were observed after hematoxylin‐eosin staining of biopsy specimens . Results T he microscopic marginal extension rates of hepatocellular carcinoma ( HCC) ,intrahepatic cholangiocarcinoma ( ICC) and metastatic liver cancer ( M LC) were 62 .5% ( 30/48 ) ,87 .5% ( 7/8 ) ,and 91 .0% ( 20/22 ) ,respectively . For tumors with well‐defined and poorly‐defined two‐dimensional ultrasound boundary ,microscopic marginal extension rates were 50% ( 14/28) ,and 86% ( 43/50) . T umor type and two‐dimensional ultrasound boundary were independent predictors for microscopic extension rate ( P ＜ 0 .05 ) . T he median microscopic extension distances of HCC ,ICC and M LC were 1 .0 ( 0 ,3 .0 ) mm ,4 .0 ( 2 .3 ,4 .0 ) mm ,and 2 .0 ( 1 .8 ,4 .0 ) mm ,respectively . T he distance of microscopic extension increased with tumor size . T umor type and tumor size were independent predictors for the distance of microscopic extension ( P ＜0 .05) . Conclusions ICC ,MLC ,and tumors with larger diameter or poorly‐defined two‐dimensional ultrasound boundary have a larger distance of microscopic extension .
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Objective To explore the diagnostic efficiency of ultrasound-guided biopsy in the diagnosis of gastrointestinal lesions.Methods The study retrospectively analyzed 41 cases who underwent ultrasound-guided biopsy and diagnosis were confirmed as gastrointestinal lesions either by surgery resections or by biopsies in our hospital from January 2006 to April 2018.The detection rate and the safety in the diagnosis of gastrointestinal lesions by ultrasound-guided biopsy were evaluated and they were compared with clinical efficiency of the endoscopic biopsy.Results (1) Of the 41 cases underwent ultrasound-guided biopsies,38 cases were confirmed by pathology.A 92.7％ detection rate had achieved by ultrasound-guided biopsies.In the 38 cases,the diagnoses were grouped in benign and malignant,with 29 malignant and 9 benign.(2) Among the 13 cases examined by both of the ultrasound-guided biopsy and endoscopic biopsy,the diagnostic accuracy of ultrasound-guided biopsy was 84.6％ and 61.5％ with endoscopy.No significant difference (P =0.378) between the two modalities.(3) No complication occurred with both of methods.Conclusions Ultrasound-guided biopsy of gastrointestinal lesions is a safe and effective method.It would be an alternative solution to provide clinicians with reliable diagnosis,especially when endoscopic diagnosis is not inapplicable or failed.
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Objective To evaluate the effect of artificial ascites under ultrasonic guidance in the thermal ablation of liver or kidney tumors ,so as to provide basis for successfully creating artificial ascites , increasing the complete ablation rate of the tumors and reducing the damage of important organs . Methods Seven hundred and thirty-six patients with artificial ascites were performed under ultrasonic guidance during the thermal ablation of liver or kidney tumors and six hundred and seventy-nine patients were successfully performed . The success rate of creating artificial ascites at different sites ,time requirement ,the effect of ascites , puncture times were analyzed , while curative effect and complications were evaluated and summarized . Results The success rate of creating artificial ascites was 92 .3％ ;the average time of creating artificial ascites was( 9 .1 ± 1 .3) minutes ;the average puncture times was( 1 .1 ± 0 .2) times ;complete ablation was 98 .7％ ;the complication of ascites creation was 0 .44％ ,minor complications after ablation was 6 .20％ , severe complications was 0 .59％ . The required fluid volume and success rates for the creation of artificial ascites in different sites were different . The volume of fluid needed was relatively high in the liver-gastric space ,and the success rate was relatively low ;the success rate of liver septum and liver -kidney crypts was the highest . Heat injury complications of the important organs such as gastrointestinal tract ,esophagus , diaphragm near the liver or kidney tumors were 0 . Conclusions The establishment of artificial ascites improves the local curative effect and reduces the complication of tumors ablation in difficult locations . The methods and effect of artificial ascites in different parts of liver or kidney are different .
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Objective To investigate the security,applicability and diagnostic capacity of intravenous contrast-enhanced ultrasound (CEUS) in a pediatric population. Methods A total of 53 pediatric patients (8 months to 18 years old) received 66 intravenous applications of ultrasound contrast agent SonoVue.Side effects were documented.Histology,reference imaging or clinical diagnosis were compared with CEUS diagnostic results. Results Adverse effects occurred in 1/66 applications (1.5% ). For 44 focal liver lesions,the sensitivity was 100%,the specificity was 95.65%,the positive predictive value was 95.45% and the negative predictive value was 100%.The diagnostic accuracy was 97.73%.All 22 other lesions were diagnosed correctly.Conclusions It is safe and feasible to use intravenous CEUS in children.CEUS is worthy of promotion in pediatric patients with abdominal diseases.
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Objective To study the feasibility,efficacy and safety of ultrasound-guided percutaneous radiofrequency ablation (RFA) in the treatment of hepatocellular carcinoma (HCC) in the caudate lobe.Methods From November 2006 to June 2017,31 patients with 31 HCCs located in the caudate lobe were treated with percutaneous RFA at the First Affiliated Hospital of Sun Yat-sen University.The treatment efficacy,complications,and the local tumor progression (LTP),disease-free survival (DFS) and overall survival (OS) rates were analyzed.Results Residual tumors were detected in 5 patients after the first treatment.Complete necrosis was achieved in all the patients after the second treatment.The mean number of ablation sessions was 1.16±0.37.At a follow-up period which ranged from 3 to 65 months,19 patients had died,10 patients were still alive,and 2 patients were lost to follow-up.The 1-,2-,3-,and 5-years OS rates were 78.4％,48.5％,12.1％ and 12.1％,respectively.On follow-up,9 caudate lobe HCC lesions were detected to have LTP.The 1-,2-,and 3-years LTP rates were 21.5％,41.6％ and 41.6％,respectively;while the 1-,2-,and 3-years DFS rates were 22.3％,11.2％ and 11.2％,respectively.Ablationrelated complications were detected in 4 patients.Conclusions Ultrasound-guided percutaneous RFA was safe and effective for patients with HCC in the caudate lobe.These patients should be followed-up closely to detect LTP.
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Objective To evaluate the value of intra-cavitary contrast-enhanced ultrasound (IC-CEUS) via abdomen in fistulas difficult to diagnose before operation.Methods Clinical data of 12 patients with preoperative clinical suspicion of Crohn's Disease (CD) complications of fistula were enrolled in the study.Colonoscopy,cystoscope,or CT/MR has not confirmed the diagnosis of intra abdominal fistulas.IC-CEUS were performed by locally-injection of contrast agent in abdominal abscess,observing fistula and the relationship with the adjacent organs in CEUS mode.Diagnostic criteria were surgical findings.Results Fistulas in 10 patients were detected by IC-CEUS,including 7 cases of Ileo-mesenteric fistuls,2 cases of il eo-vesical fistulas,and 1 case of colo-vesical fistula.The accuracy rate of IC-CEUS in diagnosis of fistulas difficult to diagnose before operation in Crohn's disease was 83.3％ (10/12).No severe adverse events occurred during and after IC-CEUS procedure.Conclusions Our preliminary study shows that IC-CEUS is feasible in detecting abdominal fistula with high accuracy.It might be used as the alternative imaging tech nique for detecting fistulas when CT and MR are insufficient.
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Objective To learn the current capacity building of emergency response teams in Tianjin for the purpose of goals setting.Methods Health Emergency Capacity Questionnaire was issued to 89 secondary and above medical institutions and 19 CDCs in Tianjin.The form covered such items as basic institutional information, workforce makeup, emergency preparations, detection and early warning, emergency response, and summary/assessment.Data collected in the questionnaire were subject to descriptive and correlation analysis.Results Tianjin has scored an initial success in emergency medicine as evidenced in its emergency response mechanisms in place, elevated capacity in emergency medical rescue and disposal, and enhanced competence of emergency teams.Rooms of improvement however include insufficient professionalism and independence of health emergency, inadequate emergency commanding and decision making system functions, insufficient laboratory test capacity at district/county levels, and insufficient social involvement in health emergency.Conclusions Top-down design should be emphasized, health emergency response should be enhanced in terms of management and response planning system, while capacity building of the teams and long-term primary care emergency mechanism deserve higher attention.
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Objective To investigate the positive practice environments ( PPE ) of nurses and influencing factors at public hospitals , for reference of building a better PPE .Methods A national cross-sectional survey was performed at 77 public hospitals across seven provinces/metropolises, involving 5374 nurses.PPE included organizational management (internal) and nurses-patient relationship (external). Results The scoring of positive practice environment was 18.51 ±4.69 (total score of 40).The scoring of organizational management and nurses-patient relationship was 9.87 ±3.11 and 8.64 ±2.51 respectively. The scoring of PPE of nurses of general hospital ( GH) was higher than that of traditional Chinese medicine hospital(TCMH) (18.68 ±4.68 versus 18.08 ±4.67, P<0.01).Multivariable analysis showed that , compared with nurses who had not very much pressure about performance assessment , the scores of those who had were declined (βGH =-1.15, 95％CI: -1.55 to -0.76;βTCMH =-1.29, 95％CI: -1.92 to-0.66 ) );compared with nurses who paid less efforts in communicating with their patients , the scoring of those with greater efforts was higher (βGH =2.43, 95％CI:2.00 to 2.86;βTCMH =2.84, 95％CI:2.19 to 3.49).Conclusions PPE of nurses is poor in general in China , and the externally stressful nurse-patient relationship deserves greater attention and efforts than inefficient organization management internally .To improve PPE of nurses , hospitals need to moderate nurses′performance assessment and the nurses need to pay more attention to patient communication .
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Objective To investigate the value of shear wave elastography (SWE) and quasi-static elastography in the evaluation of radiofrequency ablation of pork.Methods Twelve pieces of fresh pork were underwent radiofrequency ablation (RFA) with different target temperatures.Before and after RFA,conventional ultrasound (US),SWE and quasi-static elastography were conducted to visualize the boundaries of RFA zones.The size of ablation zones obtained from conventional ultrasound,SWE and quasi-static elastography measurement were observed and detected the correlativity with pathology findings.Moreover,the Young's modulus and stain ratio of ablated zone were recorded.Results Most ablated boundaries were clearly delineated by both elastography techniques,except one with a low target temperature of 70 ℃.The sizes of ablated zones measured by SWE and quasi-static elastography were closely correlated with pathological findings.However,no ablated zones could be visualized by conventional US.Before and after RFA,the mean,minimum and maximum values of Young's modulus were (24.2 ± 3.8) kPa vs (97.6 ± 29.1) kPa,(9.2 ± 0.7)kPa vs (44.5 ± 7.7)kPa and (29.9 ± 3.8)kPa vs (181.5 ± 36.7)kPa,respectively (all P ＜0.001).With the increase of target temperature of RFA,the Young's modulus values and the mean strain ratio were significantly increased (all P ＜ 0.01).Conclusions Both SWE and quasi-static elastography are useful tools for evaluating the ablation,which are superior to conventional US.Moreover,SWE can be used to monitor the procedure of ablation.
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Objective Kallikrein 4(KLK4) is a glycosylated,chymotrypsin-like serine protease.KLK4 was first isolated from developing enamel by Japanese scientists,later it was discovered that was expressed in the normal and cancerous tissues.Its main function is to play a role in process of the protein hydrosis,resulting in a normal devel-oping or abnormal pathological changes of the organization.This article reviewed the structure,expression,functions, related disease of KLK4 and other aspects.
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BACKGROUND:Amputation is a special type of trauma. Mechanism of trauma-induced damage to the liver and the effects of hydrogen sulfide (H 2 S) on the liver remain unclear. OBJECTIVE:To explore the mechanism of hepatic damage in rats of postoperative amputation, and how H 2 S exerts effects on liver function. METHODS:Wistar rats and Sprague-Dawley rats were equal y and randomly divided into normal group, postoperative 6-, 12-, 24-and 72-hour groups, sodium hydrosulfide (NaHS) group, and propargyl glycine group, as wel as normal group, postoperative 6-hour group, HaHS group, and propargyl glycine group. Except the normal group, the structure 1.2-1.4 cm above the left knee was completely transected in rats of other groups. Blood vessels were ligated, and then left femoral vein and femoral artery were cut to establish rat models of amputation in the left hind limb. In the NaHS and propargyl glycine groups, 28 μmol/kg NaHS and 50 mg/kg propargyl glycine were intraperitoneal y injected immediately after amputation. RESULTS AND CONCLUSION:Compared with the normal group, traumatic changes in rat liver cel s and mitochondrial structure were seen, and plasma and liver myeloperoxidase, malondialdehyde, H 2 S/cystathionineγ-lyase levels, liver mitochondrial respiratory control rate, membrane potential and ATP activity were significantly lower in the postoperative 6-hour groups (P0.05). After treatment with propargyl glycine, above indicators except mitochondrial indexes were further decreased, and transaminase was significantly reduced (P<0.05). These findings suggest that H 2 S can reduce lipid peroxidation, inflammatory reaction, and make the mitochondrial function improved significantly, but did not reduce the damage of liver function in rat models after amputation.