全文获取类型
收费全文 | 1133篇 |
免费 | 85篇 |
国内免费 | 1篇 |
专业分类
耳鼻咽喉 | 2篇 |
儿科学 | 32篇 |
妇产科学 | 61篇 |
基础医学 | 91篇 |
口腔科学 | 9篇 |
临床医学 | 49篇 |
内科学 | 194篇 |
皮肤病学 | 4篇 |
神经病学 | 6篇 |
特种医学 | 69篇 |
外科学 | 630篇 |
综合类 | 26篇 |
预防医学 | 8篇 |
眼科学 | 2篇 |
药学 | 18篇 |
中国医学 | 3篇 |
肿瘤学 | 15篇 |
出版年
2016年 | 6篇 |
2015年 | 6篇 |
2013年 | 10篇 |
2012年 | 6篇 |
2010年 | 5篇 |
2009年 | 5篇 |
2008年 | 10篇 |
2007年 | 15篇 |
2006年 | 13篇 |
2005年 | 12篇 |
2004年 | 9篇 |
2003年 | 9篇 |
2002年 | 13篇 |
2001年 | 21篇 |
2000年 | 31篇 |
1999年 | 46篇 |
1998年 | 23篇 |
1997年 | 22篇 |
1996年 | 20篇 |
1995年 | 27篇 |
1994年 | 21篇 |
1993年 | 33篇 |
1992年 | 71篇 |
1991年 | 119篇 |
1990年 | 92篇 |
1989年 | 77篇 |
1988年 | 60篇 |
1987年 | 48篇 |
1986年 | 36篇 |
1985年 | 39篇 |
1984年 | 21篇 |
1983年 | 22篇 |
1982年 | 7篇 |
1980年 | 11篇 |
1979年 | 17篇 |
1978年 | 13篇 |
1977年 | 17篇 |
1976年 | 6篇 |
1975年 | 12篇 |
1974年 | 9篇 |
1973年 | 14篇 |
1972年 | 17篇 |
1971年 | 21篇 |
1970年 | 24篇 |
1969年 | 12篇 |
1968年 | 17篇 |
1967年 | 11篇 |
1966年 | 11篇 |
1957年 | 6篇 |
1954年 | 5篇 |
排序方式: 共有1219条查询结果,搜索用时 15 毫秒
991.
Judith S. Gavaler PhD Byron Delemos MD Steven H. Belle PhD Alma E. Heyl BS RT Ralph E. Tarter PhD Thomas E. Starzl MD PhD Christopher Gavaler BA David H. Van Thiel MD 《Digestive diseases and sciences》1991,36(3):321-328
To assess whether or not liver transplantation and subsequent immunosuppression with cyclosporine and prednisone affect ulcerative colitis symptomatology, we surveyed by questionnaire all 23 surviving patients with pretransplant colonoscopy-documented ulcerative colitis who were transplanted for primary sclerosing cholangitis between June 1982 and September 1985. At follow-up [89.8 +/- 7.6 weeks (mean +/- SEM], all six patients who had had asymptomatic colonoscopy-documented ulcerative colitis reported continued ulcerative colitis quiescence. Among the 17 patients who had had symptomatic colonoscopy-documented ulcerative colitis at time of liver transplantation, 88.2% reported improvement in overall ulcerative colitis severity (P less than 0.001), with significant improvement in the frequency of bowel movements reported by 100%, in crampy abdominal pain by 87.5%, in bowel urgency by 75%, in the occurrence of pus or mucus in stool by 87.5%, in the incidence of ulcerative colitis flares by 81.8%, and in the number of days unable to function normally due to ulcerative colitis symptoms by 78.6% (all at least P less than 0.01). These data demonstrate that ulcerative colitis symptom severity significantly improves following liver transplantation with immunosuppression with cyclosporine and prednisone. 相似文献
992.
R R Peleman J S Gavaler D H Van Thiel C Esquivel R Gordon S Iwatsuki T E Starzl 《Hepatology (Baltimore, Md.)》1987,7(3):484-489
The role of liver transplantation in 29 patients with fulminant and subacute hepatic failure due to a variety of different causes was examined by comparing the outcome and a variety of "hospitalization" variables. Transplanted patients (n = 13) were more likely to survive (p less than 0.05), were younger (p less than 0.05) and spent more time in the hospital (p less than 0.025) than did those who were not transplanted (n = 16). Despite spending a much longer time in the hospital, transplanted patients spent less time in the intensive care unit (p less than 0.05) in coma (p less than 0.01) and on a respirator (p less than 0.01) than did those not transplanted. Most importantly, the survival rate for transplanted patients was significantly improved (p less than 0.05) as compared to those not transplanted. We conclude that liver transplantation can be applied successfully to the difficult clinical problem of fulminant and subacute hepatic failure. 相似文献
993.
Nina Singh MD Luis Mieles MD Dr. Victor L. Yu MD Thomas E. Starzl MD PhD 《Digestive diseases and sciences》1994,39(1):15-18
Cytomegalovirus (CMV) is a major infectious complication of organ transplantation and its incidence is influenced by the type and intensity of immunosuppressive therapy employed. Using a new immunosuppressive agent FK506, CMV infection was observed in 30% and CMV disease in 15% of the 26 liver transplant recipients. Delayed onset of CMV disease was noted; the mean time to the occurrence of CMV disease being 137 days posttransplantation. No graft loss or mortality could be attributed to CMV infection. Mucocutaneous herpes simplex virus (HSV) infections were encountered in 19% of the patients, while no disease could be attributed to varicella zoster virus or Epstein-Barr virus (EBV). The contribution of FK506 to a decrease in viral morbidity and associated mortality bears further investigation. 相似文献
994.
V Cuervas-Mons A Rimola D H Van Thiel J S Gavaler R R Schade T E Starzl 《Gastroenterology》1986,90(4):853-857
The medical, anesthesia, and surgical records of 89 consecutive pediatric patients who underwent an orthotopic hepatic transplantation procedure at the University of Pittsburgh from February 1981 to May 1984 were reviewed to evaluate the effect of prior abdominal surgery upon the morbidity and mortality of orthotopic liver transplantation in children. Fifty-seven children (group 1) had had prior abdominal surgery, whereas 32 (group 2) had not. The group 1 subjects were younger (p less than 0.001), had better prothrombin times (p less than 0.01), and better platelet counts (p less than 0.02) than did those in group 2. No difference in the duration of anesthesia or intraoperative use of fresh frozen plasma or platelets was evident between the two groups. However, group 1 patients were given more red blood cells intraoperatively than were the group 2 patients (p less than 0.01). The group 1 patients had more total postoperative infections (p less than 0.05), which was due solely to a greater number of abdominal infections (p less than 0.05), but similar total hospital and intensive care unit stays as did the group 2 patients. When those in group 1 were divided into those having a previous Kasai procedure versus those who did not, no differences between the two groups were apparent except for age. Based upon these data, we conclude that prior abdominal surgery does not affect mortality, the duration of hospital or intensive care unit stay, plasma or platelet requirements, and total anesthesia time required for orthotopic liver transplantation, but does enhance the number of red blood cell transfusions and infections, particularly abdominal infections, in children undergoing this procedure. 相似文献
995.
Recurrent acute splenic sequestration crisis due to interacting genetic defects: hemoglobin SC disease and hereditary spherocytosis 总被引:1,自引:1,他引:1
A 14-year-old boy with hemoglobin SC disease and alpha-thalassemia-2 experienced five episodes of acute splenic sequestration crisis (ASSC), while two of his siblings with identical globin genotypes (SC and - alpha/alpha alpha) had no such experience. To determine if an additional red blood cell (RBC) defect was responsible for the unusual occurrence of frequent ASSCs, we performed detailed rheologic characterization and membrane protein analysis on RBCs from the proband and other members of his family. Reduced surface area, increased mechanical instability, and decreased spectrin content of the membrane, distinguishing features of RBCs in hereditary spherocytosis, were observed in cells from the proband and his mother, but not in cells from other family members. These findings are consistent with the dominant inheritance of spherocytosis by the proband. We suggest that the combined effects of SC disease and spherocytosis in the proband resulted in decreased RBC deformability and led to increased splenic trapping, intrasplenic sickling, and consequently, recurrent sequestration crisis. Marked clinical and hematologic improvement occurred from splenectomy. Thus, inheritance of interacting genetic defects, sickling hemoglobinopathy, and hereditary spherocytosis appear to be responsible for the unusual clinical manifestation of recurrent ASSC in this patient. 相似文献
996.
997.
Hepatic retransplantation in cholestatic liver disease: impact of the interval to retransplantation on survival and resource utilization. 总被引:6,自引:0,他引:6
W R Kim R H Wiesner J J Poterucha T M Therneau M Malinchoc J T Benson J S Crippin G B Klintmalm J Rakela T E Starzl R A Krom R W Evans E R Dickson 《Hepatology (Baltimore, Md.)》1999,30(2):395-400
The aim of our study was to quantitatively assess the impact of hepatic retransplantation on patient and graft survival and resource utilization. We studied patients undergoing hepatic retransplantation among 447 transplant recipients with primary biliary cirrhosis (PBC) and primary sclerosing cholangitis (PSC) at 3 transplantation centers. Cox proportional hazards regression analysis was used for survival analysis. Measures of resource utilization included the duration of hospitalization, length of stay in the intensive care unit, and the duration of transplantation surgery. Forty-six (10.3%) patients received 2 or more grafts during the follow-up period (median, 2.8 years). Patients who underwent retransplantation had a 3.8-fold increase in the risk of death compared with those without retransplantation (P <.01). Retransplantation after an interval of greater than 30 days from the primary graft was associated with a 6.7-fold increase in the risk of death (P <.01). The survival following retransplantations performed 30 days or earlier was similar to primary transplantations. Resource utilization was higher in patients who underwent multiple consecutive transplantations, even after adjustment for the number of grafts during the hospitalization. Among cholestatic liver disease patients, poor survival following hepatic retransplantation is attributed to late retransplantations, namely those performed more than 30 days after the initial transplantation. While efforts must be made to improve the outcome following retransplantation, a more critical evaluation may be warranted for late retransplantation candidates. 相似文献
998.
Simultaneous Administration of Adjuvant Donor Bone Marrow in Pancreas Transplant Recipients 总被引:1,自引:0,他引:1
999.
1000.
Summary Subtotal hepatic resection was performed in 356 patients; 87 had primary hepatic malignancies, 108 had metastatic tumors,
and 161 had benign lesions including 8 traumatic injuries. The global mortality was 4.2%. The experience has elucidated the
role of subtotal hepatic resection both for benign and malignant neoplasms.
Vorgetragen bei der 28. Jahrestagung der ?sterreichischen Gesellschaft für Chirurgie in Linz, 18.–20. Juni 1987. 相似文献