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@#Objective To assess the safety and clinical outcomes of segmentectomy in one- or two-staged video-assisted thoracoscopic surgery (VATS) for bilateral lung cancer. Methods We retrospectively enrolled 100 patients who underwent VATS segmentectomy for bilateral lung cancer at the Department of Thoracic Surgery of Peking Union Medical College Hospital from December 2013 to May 2022. We divided the patients into two groups: a one-stage group (52 patients), including 17 males and 35 females with a mean age of 55.17±11.09 years, and a two-stage group (48 patients), including 16 males and 32 females with a mean age of 59.88±11.48 years. We analyzed multiple intraoperative variables and postoperative outcomes. Results All 100 patients successfully completed bilateral VATS, and at least unilateral lung received anatomical segmentectomy. Patients in the one-stage group were younger (P=0.040), had lower rate of comorbidities (P=0.030), were less likely to have a family history of lung cancer (P=0.018), and had a shorter interval between diagnosis and surgery (P=0.000) compared with patients in the two-stage group. Wedge resection on the opposite side was more common in the one-stage group (P=0.000), while lobectomy was more common in the two-stage group. The time to emerge from anesthesia in the one-stage group was longer than that in the first and second operations of the two-stage group (P=0.000, P=0.002). Duration of surgery and anesthesia were similar between two groups (P>0.05). Total number of lymph node stations for sampling and dissection (P=0.041) and lymph nodes involved (P=0.026) were less in the one-stage group. Intraoperative airway management was similar between two groups (P>0.05). The one-stage group was associated with lower activities of daily living (ADL) scores. Conclusion Segmentectomy is safe in one- or two-staged VATS for bilateral lung cancer, including contralateral sublobectomy and lobectomy. Duration of surgery and perioperative complications are similar between two groups, but the one-stage group is associated with lower ADL scores. On the basis of comprehensive consideration in psychological factors, physical conditions and personal wishes of patients, one-staged sequential bilateral VATS can be the first choice.
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Epilepsies are a group of chronic neurological disorders characterized by spontaneous recurrent seizures caused by abnormal synchronous firing of neurons and transient brain dysfunction. The underlying mechanisms are complex and not yet fully understood. Endoplasmic reticulum (ER) stress, as a condition of excessive accumulation of unfolded and/or misfolded proteins in the ER lumen, has been considered as a pathophysiological mechanism of epilepsy in recent years. ER stress can enhance the protein processing capacity of the ER to restore protein homeostasis through unfolded protein response, which may inhibit protein translation and promote misfolded protein degradation through the ubiquitin-proteasome system. However, persistent ER stress can also cause neuronal apoptosis and loss, which may aggravate the brain damage and epilepsy. This review has summarized the role of ER stress in the pathogenesis of genetic epilepsy.
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Humans , Endoplasmic Reticulum Stress/genetics , Unfolded Protein Response , Endoplasmic Reticulum/pathology , Apoptosis , Epilepsy/geneticsABSTRACT
@#Objective To systematically review the clinical utilization of robotic bronchoscopes in diagnosis of pulmonary nodules, including MonarchTM and IonTM platforms, and then evaluate the efficacy and safety of the procedure. Methods PubMed, EMbase, Web of Science and Cochrane Central Register of Controlled Trials databases were searched by computer for literature about the biopsy of pulmonary nodules with robotic bronchoscope from January 2018 to February 14, 2022. The quality of research was evaluated with Newcastle-Ottawa Scale. RevMan 5.4 software was used to conduct the meta-analysis. Results Finally, 19 clinical studies with 1 542 patients and 1 697 targeted pulmonary nodules were included, of which 13 studies used the IonTM platform and 6 studies used the MonarchTM platform. The overall diagnostic rate of the two systems was 84.96% (95%CI 62.00%-95.00%), sensitivity for malignancy was 81.79%(95%CI 43.00%-96.00%), the mean maximum diameter of the nodules was 16.22 mm (95%CI 10.98-21.47), the mean procedure time was 61.86 min (95%CI 46.18-77.54) and the rate of complications occurred was 4.76% (95%CI 2.00%-15.00%). There was no statistical difference in the outcomes between the two systems. Conclusion Robotic bronchoscope provides a high efficacy and safety in biopsy of pulmonary nodules, and has a broad application prospect for pulmonary nodules diagnosis.
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ObjectiveTo analyze the influencing factors of stunting among 3 to 4-year-old children in Changning District， Shanghai， in order to provide a scientific basis for early prevention and intervention for stunting. MethodsRandom cluster sampling was employed to select1 514 children from 16 kindergartens in Changning District， Shanghai as the survey subjects. Basic information such as height， weight， perinatal and infant feeding status， diet and lifestyle， as well as parental information was collected. The detection rate of stunting was calculated， and the influencing factors of stunted growth were analyzed. ResultsThe stunting detection rate of the 1 514 children was 5.4%. In terms of family-related factors， parents of stunted children had lower heights and a lower proportion of accessing growth and developmental knowledge from professional platforms compared to parents of non-stunted children （both P<0.05）. Among individual-related factors， the proportion of premature birth， low birth weight， short birth length， twin or multiple births， low fruit consumption， vitamin D intake， short outdoor playtime， and frequent nighttime waking was higher in the stunting group than in the control group （P<0.05）. Binary logistic multivariate regression analysis showed that shorter parental height （OR=4.35， 95%CI：1.20‒15.84 and OR=3.49， 95%CI：1.43‒8.51）， low birth weight （OR=2.99，95%CI：1.28‒7.05）， multiple or twin pregnancies （OR=3.78，95%CI：1.29‒11.06）， short outdoor playtime during weekends and holidays （OR=2.34，95%CI：1.02‒5.46）， frequent nighttime waking （OR=1.89， 95%CI：1.06‒3.39）， and consuming fewer fruits daily （OR=1.81， 95%CI： 1.01‒3.26） significantly increased the risk of stunting. ConclusionLow parental height， low birth weight， being twins or multiples， limited outdoor playtime during holidays， frequent nighttime waking， and low daily fruit consumption are major risk factors for stunting in infants and children.
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@#Objective To investigate the clinical characteristics and treatment of primary mediastinal yolk sac tumor (PMYST). Methods We collected the clinical data of PMYST patients who were admitted to the Department of Thoracic Surgery of Peking Union Medical College Hospital from September 2000 to September 2020. The clinical and pathological characteristics, treatment and prognosis of PMYST patients were retrospectively analyzed. Results Finally 18 patients were enrolled, including 17 males and 1 female with a median age of 22.0 (16.6, 26.2) years. Patients had increased level of alpha fetoprotein (AFP). The pathological type can be single yolk sac tumor or combined with other mediastinal germ cell tumors. Chemotherapy and radical surgery were the main treatment methods. Extensive resection was feasible for patients with tumor invasion of other organs. Seven patients developed lung or pleural metastasis after operation, and 3 of them had extrapleural metastasis. One patient recurred within 1 year after surgery. All patients were followed up by telephone or outpatient department. At the last follow-up, 5 patients survived, 9 died, and 4 were lost to follow up, with a median survival of 16.8 months. The median disease-free survival was 14.9 months. The survival rates at 1, 3 and 5 years were 73.3%, 28.6% and 11.8%, respectively. Conclusion PMYST often occurs in young-middle aged male patients. Preoperative puncture can provide an effective diagnostic basis. R0 resection, AFP returning to normal after treatment and no metastasis may be potential indicators of good prognosis. The overall prognosis of PMYST is poor, and some patients can achieve long-term survival after treatment.
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@#Objective To analyze the research hotspots and progress of surgical treatment of myasthenia gravis. Methods The top 100 most cited articles on surgical treatment of myasthenia gravis were identified by searching the Web of Science database, and a bibliometric analysis was conducted. Results The publication year of the top 100 most cited articles ranged from 1939 to 2021, and the number of citations ranged from 55 to 850 per article. Most of the included articles were original research articles (75/100), which were mainly retrospective studies (64/75). The United States was the country with the most published articles and most citations, and Annals of Thoracic Surgery was the most sourced journal (n=20). Through VOSviewer analysis, high-density keywords were thymectomy, maximal thymectomy, extended thymectomy, transcervical thymectomy, thymoma, and autoantibodies. Conclusion The scope of surgical resection, surgical approach and pathogenesis are the current hotspots in the field of surgical treatment of myasthenia gravis. It is hoped that this paper can provide references for future researches in this field.
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Objective:To probe into the potential prognostic value of lymphocyte subsets in gastric cancer.Methods:This study included patients who underwent radical gastrectomy for gastric cancer from Aug 2014 to Dec 2016. The immunological differences was analyzed in different infiltration patterns. The overall survival of patients was analyzed by Kaplan-Meier method and Log-rank test. COX regression was performed to assess independent prognostic factors of the patients, and finally constructed nomogram.Results:The median number of peripheral CD4 and CD19 cells in infiltration pattern c was 750 (94-2 504) cells/μl and 186 (17-820) cells/μl; the median number of peripheral CD4 and CD19 cells in infiltration pattern a was 802 (203-2 071) cells/μl and 213 (5-948) cells/μl, the number of peripheral CD4,CD19 cells in infiltration pattern c was lower than that in infiltration pattern a, with statistically significant differences (CD4: Z=-3.061, P=0.002; CD19: Z=-2.016 , P=0.044). CD19 lymphocytes ( P=0.023) were associated with infiltration pattern a, CD8 lymphocytes ( P=0.027) were associated with infiltration pattern b, and CD4 lymphocytes ( P=0.026) were independent risk factors associated with the prognosis of infiltration pattern c. A nomogram can be constructed to evaluate the prognosis of patients. Conclusion:There are differences in the number of peripheral lymphocyte subsets in patients with different INF types. A nomogram can be constructed from lymphocyte subsets and clinicopathological features to assess patient prognosis.
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Objective:To compare the prognosis difference between proximal gastrectomy (PG) and total gastrectomy (TG) in patients with advanced upper gastric cancer.Methods:This study included patients of upper gastric cancer admitted from Jan 2011 to Dec 2016 undergoing radical resection at Harbin Medical University Cancer Hospital. Patients were divided into TG group (178 cases) and PG group (185 cases).Results:Comapared to PG group , more TG patients were with tumor diameter >4 cm, Borrmann type Ⅲ and postoperative stage Ⅲ ( χ2=9.687, P=0.002; χ2=24.897, P=0.001; χ2=6.257 P=0.044).The 5-year overall survival (OS) of the PG group and the TG group were 64.3% (95% CI: 45.1%-50.5%) and 60.6% (95% CI: 41.3%-47.6%) ( P=0.297).After propensity score matching, the OS between the two groups was not statistically significant ( P=0.876).Subgroup analysis of chemotherapy showed that the difference in survival between TG group and PG group was not statistically significant ( P=0.309). Conclusion:There was no difference in survival between PG and TG in patients with advanced upper gastric cancer.
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Objective:To investigate the effects of estimated dose of radiation to immune cells (EDRIC) on overall survival (OS), local progression-free survival (LPFS) and distant metastasis-free survival (DMFS) in limited-stage small-cell lung cancer (LS-SCLC) with different tumor burdens.Methods:Clinical data of 216 patients with LS-SCLC who initially received conventional fractionated radiotherapy of the chest for radical treatment in Tianjin Medical University Cancer Institute and Hospital from 2013 to 2019 were retrospectively analyzed. EDRIC was calculated based on the model developed by Jin et al. and tumor burdens were assessed by gross tumor volume (GTV) or clinical stage. The study endpoints were OS, LPFS and DMFS, which were calculated from the date of diagnosis. The optimal cut-off value of EDRIC was calculated by R language. The correlation between EDRIC and tumor burdens was analyzed using Spearman's correlations. Survival analysis was performed by Cox proportional hazards regression model and Kaplan-Meier curve. Results:The median follow-up time for the whole group was 47.8 months, and the median OS and DMFS was 34.6 months and 18.5 months, respectively, while the median LPFS did not reach. The optimal cut-off value of EDRIC was 6.8 Gy. Cox multivariate analysis showed that EDRIC was an independent prognostic factor affecting OS and DMFS. EDRIC was weakly correlated with GTV or clinical stage. Stratified by the median GTV, OS ( P=0.021) and DMFS ( P=0.030) were significantly shortened and LPFS had a tendency of shortening ( P=0.107) when EDRIC>6.8 Gy compared with those when EDRIC ≤ 6.8 Gy in the GTV ≤ 34.6 cm 3 group; EDRIC had little effect on OS, LPFS, and DMFS ( P=0.133, 0.420, 0.374) in the GTV>34.6 cm 3 group. Stratified by clinical stage, OS ( P=0.003) and DMFS ( P=0.032) were significantly shortened and LPFS ( P=0.125) tended to shorten when EDRIC>6.8 Gy in stage I, II and IIIA groups; EDRIC exerted slight effect on OS, LPFS, and DMFS ( P=0.377, 0.439, 0.484) in stage IIIB and IIIC groups. Conclusion:EDRIC is an important factor affecting prognosis and exerts more significant impact on prognosis in patients with smaller tumor burden.
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Neoadjuvant immunotherapy, including neoadjuvant single- or dual-drug immunotherapy or combined immunotherapy with chemotherapy or radiotherapy, has witnessed a rapid development in non-small cell lung cancer. Clinical trials exhibited the encouraging pathological responses and certain clinical benefits in selected patients, with tolerable toxicity. Nivolumab with chemotherapy has been approved by Food and Drug Administration (FDA) as the first immunotherapy-based treatment for non-small cell lung cancer in the neoadjuvant treatment setting. There is the need for further evaluation of long-term efficacy, side effects or surgical issues for neoadjuvant immunotherapy in non-small cell lung cancer. .
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Humans , Antineoplastic Agents, Immunological/therapeutic use , Carcinoma, Non-Small-Cell Lung/pathology , Immunotherapy/methods , Lung Neoplasms/pathology , Neoadjuvant Therapy , Nivolumab/therapeutic useABSTRACT
Small cell lung cancer is a kind of malignant tumor with strong invasiveness and poor prognosis, and the classic therapeutic modality of the disease remains multidisciplinary and comprehensive treatment. Treatment options for small cell lung cancer have been stalled for a long time, and new opportunities have emerged in recent years due to the development and initial experience of immunotherapeutic drugs. Clinical trials of some selected immune checkpoint inhibitors have confirmed the efficacy and safety in small cell lung cancer. Based on the results of phase III clinical trials (Impower133 and CASPIAN), Atezolizumab or Durvalumab in combination with chemotherapy has been approved by the U.S. Food and Drug Administration for the first-line treatment of extensive-stage small cell lung cancer. Clinical trials involving immune checkpoint inhibitors are being actively carried out and provide different perspectives for the management of small cell lung cancer. This article aimed to review the clinical progress in immunotherapy of small cell lung cancer. .
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Humans , Clinical Trials, Phase III as Topic , Immune Checkpoint Inhibitors , Immunologic Factors/therapeutic use , Immunotherapy/methods , Lung Neoplasms/pathology , Small Cell Lung Carcinoma/pathologyABSTRACT
OBJECTIVES@#It has been suggested that the consumption of dairy products helps lower the prevalence of type 2 diabetes (T2D). We investigated the association between the consumption of dairy products and T2D events in middle-aged Korean adults. @*METHODS@#We followed up 53,288 participants (16,895 male and 36,393 female) in the Health Examinees (HEXA) study. The consumption of dairy products was assessed using the self-administered food frequency questionnaire, and T2D was defined according to the 2015 treatment guidelines of the Korean Diabetes Association. Hazard ratios (HRs) and 95% confidence intervals (CIs) between the consumption of dairy products and the risk of T2D were calculated using Cox proportional hazards models after adjusting for potential confounders. Spline regression was used to better represent the association between the consumption of dairy products and the risk of T2D. @*RESULTS@#Among male, those with higher consumption of dairy products had a significantly lower risk of T2D than those who consumed essentially no dairy products (HR, 0.73; 95% CI, 0.58 to 0.91). In particular, consumption of yogurt (HR, 0.75; 95% CI, 0.60 to 0.93; ptrend=0.035) and cheese (HR, 0.66; 95% CI, 0.49 to 0.89; ptrend=0.005) was negatively associated with the incidence of T2D in male. In female, daily consumption of 1 serving of yogurt decreased the risk of T2D by 11%. @*CONCLUSIONS@#The association between the consumption of dairy products and the risk of T2D differed by sex and dairy product type. Further prospective studies are needed to confirm these associations.
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Objective To determine the changing trend and causes of perinatal mortality in Changning District after the implementation of the universal two-child policy， and then explore effective interventions for preventing perinatal mortality. Methods Data of perinatal mortality in Changning District from 2011 to 2020 were retrospectively collected. Change of perinatal mortality， causes of death and related factors were compared in consecutive 5 years before and after the universal two-child policy. Results In total， there were 153 099 perinatal births from 2011 to 2020 in Changning District， in which 352 deaths were documented. The perinatal mortality was 2.30 per 1 000 births， showing an overall downward trend from 2011 to 2020 （ P <0.05）. Residents with local household registration had lower perinatal mortality， compared to those with non-local household registration， which was observed both before and after the universal two-child policy （ P <0.05）. Furthermore， the perinatal mortality showed an upward trend after the universal two-child policy （ χ 2trend=5.481， P <0.05）. The major causes of perinatal death were fetus and its accessories， fetal malformation， and maternal diseases during pregnancy before the universal two-child policy； in contrast， the causes changed to maternal diseases during pregnancy， fetus and its accessories， and neonatal diseases after the policy. The proportion of pregnant women of advanced maternal age， menstrual delivery， and pregnancy complications or comorbidities were significantly higher after the policy than that before the policy （ P <0.05）. The most common pregnancy complication was gestational diabetes mellitus， gestational hypertension， and hypothyroidism during pregnancy after the universal two-child policy. Of them， the proportion of gestational hypertension increased from 6.56% （4/61） to 25.88% （22/85）. Conclusion Before and after the universal two-child policy， the perinatal mortality in non-local residents remains high and further shows an upward trend. Moreover， pregnant women advanced maternal age and those with complications or comorbidities may increasingly contribute to perinatal deaths after the policy. Therefore， health education should be strengthened to improve the awareness of self-health care， especially for non-local women. Hierarchical perinatal health service， primary prevention and treatment of pregnancy complications or comorbidities should be improved to further reduce perinatal mortality.
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Objective To determine the changing trend and causes of perinatal mortality in Changning District after the implementation of the universal two-child policy， and then explore effective interventions for preventing perinatal mortality. Methods Data of perinatal mortality in Changning District from 2011 to 2020 were retrospectively collected. Change of perinatal mortality， causes of death and related factors were compared in consecutive 5 years before and after the universal two-child policy. Results In total， there were 153 099 perinatal births from 2011 to 2020 in Changning District， in which 352 deaths were documented. The perinatal mortality was 2.30 per 1 000 births， showing an overall downward trend from 2011 to 2020 （ P <0.05）. Residents with local household registration had lower perinatal mortality， compared to those with non-local household registration， which was observed both before and after the universal two-child policy （ P <0.05）. Furthermore， the perinatal mortality showed an upward trend after the universal two-child policy （ χ 2trend=5.481， P <0.05）. The major causes of perinatal death were fetus and its accessories， fetal malformation， and maternal diseases during pregnancy before the universal two-child policy； in contrast， the causes changed to maternal diseases during pregnancy， fetus and its accessories， and neonatal diseases after the policy. The proportion of pregnant women of advanced maternal age， menstrual delivery， and pregnancy complications or comorbidities were significantly higher after the policy than that before the policy （ P <0.05）. The most common pregnancy complication was gestational diabetes mellitus， gestational hypertension， and hypothyroidism during pregnancy after the universal two-child policy. Of them， the proportion of gestational hypertension increased from 6.56% （4/61） to 25.88% （22/85）. Conclusion Before and after the universal two-child policy， the perinatal mortality in non-local residents remains high and further shows an upward trend. Moreover， pregnant women advanced maternal age and those with complications or comorbidities may increasingly contribute to perinatal deaths after the policy. Therefore， health education should be strengthened to improve the awareness of self-health care， especially for non-local women. Hierarchical perinatal health service， primary prevention and treatment of pregnancy complications or comorbidities should be improved to further reduce perinatal mortality.
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@#Thymic neuroendocrine tumors (TNETs) are a series of rare diseases with aggressive biology and poor prognosis. Clinical manifestations of TNETs are atypical, and ectopic secretion of adrenocorticotropic hormone can be found in some cases, resulting in associated endocrine symptoms. Due to the low morbidity and strong heterogeneity, it’s difficult to diagnose, treat and obtain new treatment regimen. Early complete surgical resection is an effective treatment. For advanced cancer, clinical trials of new drugs are expected to improve the survival of patients.
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Objective:To ascertain the endemic status of paragonimiasis in Zhejiang Province.Methods:From 2005 to 2020, 2-3 villages in 1-2 counties (cities, districts, hereinafter refferred to as counties) in historical endemic areas of paragonimiasis in Zhejiang Province were selected for monitoring each year. In each village, 50 to 150 local residents were selected as monitoring subjects, venous blood samples were collected, and serum Paragonimus antibody was detected by enzyme-linked immunosorbent assay (ELISA). Fifty to 100 intermediate hosts crabs or crayfish were collected in each village, and the infection of Paragonimus metacercaria was detected by crushing precipitation. Results:The positive rate of Paragonimus antibody was 2.9% (94/3 297); 3 929 crabs or crayfish were divided into 2 749 groups, 790 of which were found to have Paragonimus metacercaria infection, with a Paragonimus metacercaria infection rate of 28.7%. Conclusions:Paragonimus transmission chain exists in some counties of Zhejiang Province, which still has the potential risk of Paragonimus epidemic. Therefore, it is necessary to strengthen monitoring and carry out extensive health education to improve residents' self-protection awareness.
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Pulmonary inflammatory myofibroblastic tumor (PIMT) is a rare lung tumor that is poorly understood by clinicians. Based on the data of patients with PIMT in our center, a comprehensive search and a brief summary analysis of previous reports of the disease were carried out in this article. PIMTs were more likely to be present in male patients and in the right lung, and their clinical and radiographic findings were heterogeneous. Surgery is the most important treatment method, and complete resection is of great significance to the prognosis of patients. Targeted therapy represented by crizotinib may be helpful for patients with positive ALK mutations.
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Small cell lung cancer carries the worst prognosis among lung cancer. The current guidelines only recommend surgical treatment for patients in the Ⅰ-ⅡA stage, but surgical treatment is often in a neglected position in clinical practice. More and more recent studies have focused on this aspect. This article reviews the recent research literatures and reviews the progress of surgery in the multidisciplinary treatment of small cell lung cancer.
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Objective:To investigate the role of concurrent chemoradiotherapy in the treatment of limited-stage small cell lung cancer (LS-SCLC) and the impact of the number of chemotherapy cycle during radiotherapy (RT) on clinical prognosis.Methods:Patients with LS-SCLC treated with definitive radiotherapy from May, 2008 to September, 2016 were included in the study. The primary endpoint was overall survival (OS), which was calculated from the start of treatment to the date of death or last follow-up. The effect of the number of concurrent chemotherapy cycle and other clinical factors on clinical efficacy was analyzed. Survival analysis was performed with Kaplan- Meier method, and multivariate analysis was performed with Cox regression model. Results:Three hundred and seventeen patients were eligible for the analysis. Among them, 129 patients received sequential chemoradiotherapy and 188 patients received concurrent chemoradiotherapy. Among patients receiving concurrent chemoradiotherapy, 86 patients received 1 cycle of concurrent chemotherapy and 102 cases of 2 cycles of concurrent chemotherapy. The median follow-up time was 22.47 months. Multivariate survival analysis showed that only clinical stage, timing of RT administration and prophylactic cranial irradiation (PCI) were the independent prognostic factor for OS. The median OS in patients who received 1 cycle and 2 cycles of concurrent chemotherapy during RT were 33.8 months and 30.4 months ( P=0.400). No matter in elder patients or in younger patients, in early RT group or in late RT group and application of PCI or not, the number of concurrent chemotherapy cycle exerted no significant impact on OS. The incidence of grade 3 or above adverse events was 20% in the 1-cycle concurrent chemotherapy group, and 13.7% in the 2-cycle concurrent chemotherapy group. Conclusions:Concurrent chemoradiotherapy is the standard treatment of LS-SCLC. Two cycles of concurrent chemotherapy during RT is not necessarily superior to 1 cycle of concurrent chemotherapy. The optimal number of concurrent chemotherapy cycle during RT need to be studied in a large prospective randomized clinical trial.
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Objective:To compare the effect of metaraminol and norepinephrine (NA) on elderly patients with septic shock.Methods:In this multicenter prospective cohort study elderly patients with septic shock were divided into the metaraminol group ( n=100) and NA group ( n=100). The 28-day survival and average hospital stay, the hemodynamics and renal function of the patients were observed. Results:The average hospital stay in the metaraminol group was lower than that in the NA group ( P < 0.05). Blood pressure, heart rate, arterial lactate, B-type natriuretic peptide, left ventricular ejection fraction and 28-day survival had no significant differences between the two groups (all P > 0.05). The average urine output at day 3 and 7 after the administration of vasopressor in the metaraminol group were higher than those in the NA group (all P< 0.05), blood urea nitrogen at day 3, 7 and 14 after the administration of vasopressor in the metaraminol group were lower than those in the NA group (all P < 0.05), and the creatinine at day 3, 7 and 14 after the administration of vasopressor and the rate of renal replacement therapy in the metaraminol group were lower than those in the NA group (all P < 0.05). Conclusions:Metaraminol has similar effect to norepinephrine in improving 28-day survival and hemodynamics of elderly patients with septic shock, but is superior to norepinephrine in reducing the average hospital stay and protecting renal function.