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| 1 | Acute upper gastrointestinal bleeding in octοgenarians:Clinical outcome and factors related to mortality显示文摘AIM: To evaluate the aetiology, clinical outcome and factors related to mortality of acute upper gastrointestinal bleeding (AUGIB) in octogenarians. METHODS: We reviewed the records of all patients over 65 years old who were hospitalised with AUGIB in two hospitals from January 2006 to December of 2006. Patients were divided into two groups: Group A (65-80 years old) and Group B (> 80 years old). RESULTS: Four hundred and sixteen patients over 65 years of age were hospitalized because of AUGIB. Group A included 269 patients and Group B 147 patients. Co-morbidity was more common in octogenarians (P = 0.04). The main cause of bleeding was peptic ulcer in both groups. Rebleeding and emergency surgery were uncommon in octogenarians and not different from those in younger patients. In-hospital complications were more common in octogenarians (P = 0.05) and more patients died in the group of octogenarians compared to the younger age group (P = 0.02). Inability to perform endoscopic examination (P = 0.002), presence of high risk for rebleeding stigmata (P = 0.004), urea on admission (P = 0.036), rebleeding (P = 0.004) and presenceof severe co-morbidity (P < 0.0001) were related to mortality. In multivariate analysis, only the presence of severe co-morbidity was independently related to mortality (P = 0.032). CONCLUSION: While rebleeding and emergency surgery rates are relatively low in octogenarians with AUGIB, the presence of severe co-morbidity is the main factor of adverse outcome. | George J Theocharis Vassiliki Arvaniti Stelios F Assimakopoulos Konstantinos C Thomopoulos Vassilis Xourgias Irini Mylonakou Vassiliki N Nikolopoulou | 2008 | World Journal of Gastroenterology2008，14，25： | 15 |
| 2 | Acute upper gastrointestinal bleeding in operated stomach: Outcome of 105 cases显示文摘AIM: To compare the causes and clinical outcome of patients with acute upper gastrointestinal bleeding (AUGB) and a history of gastric surgery to those with AUGB but without a history of gastric surgery in the past.METHODS: The causes and clinical outcome were compared between 105 patients with AUGB and a history of gastric surgery, and 608 patients with AUGB but without a history of gastric surgery.RESULTS: Patients who underwent gastric surgery in the past were older (mean age: 68.1±11.7 years vs 62.8±17.8 years, P= 0.001), and the most common cause of bleeding was marginal ulcer in 63 patients (60%). No identifiable source of bleeding could be found in 22 patients (20.9%) compared to 42/608 (6.9%) in patients without a history of gastric surgery (P = 0.003). Endoscopic hemostasis was permanently successful in 26 out of 35 patients (74.3%) with peptic ulcers and active bleeding or non-bleeding visible vessel. Nine patients (8.6%) were operated due to continuing or recurrent bleeding,compared to 23/608 (3.8%) in the group of patients without gastric surgery in the past (P= 0.028). Especially in peptic ulcer bleeding patients, emergency surgery was more common in the group of patients with gastric surgery in the past [9/73 (12.3%) vs 19/360 (5.3%), P = 0.025].Moreover surgically treated patients in the past required more blood transfusion (3.3±4.0 vs 1.5±1.7, P = 0.0001) and longer hospitalization time (8.6±4.0 vs 6.9±4.9 d,P = 0.001) than patients without a history of gastric surgery. Mortality was not different between the two groups [4/105 (3.8%) vs 19/608 (3.1%)].CONCLUSION: Upper gastrointestinal bleeding seems to be more severe in surgically treated patients than in non-operated patients. | Vassiliki N Nikolopoulou Konstantinos C Thomopoulos George I Theocharis Vassiliki A Arvaniti Constantine E Vagianos | 2005 | World Journal of Gastroenterology2005，11，29： | 9 |
| 3 | Description of the new I1011 beamline for magnetic measurements using synchrotron radiation at MAX-lab显示文摘 | I A Kowalik G ?hrwall B N Jensen R Sankari E Wallén U Johansson O Karis D Arvanitis | 2010 | Journal of Physics: Conference Series2010，，1： | 1 |
| 4 | PID-type controller tuning for unstable first order plus dead time processes based on gain and phase margin specifications 显示文摘 | Paraskevopoulos P N Pasgianos G D Arvanitis K G | 2006 | IEEE Transactions on Control Systems Technology2006，14，5： | 1 |
| 5 | In-field Trials of a Tire Pressure Monitoring System Based on Segmented Capacitance Rings显示文摘 | Cullen J D Arvanitis N Lucas J | 2002 | Measurement2002，32，3： | 1 |
| 6 | Computer integrated management and intelligent control of greenhouse显示文摘 | SIGRIMIS N ARVANITIS K G PASGIANOS G D | 2002 | Environ Control in Biol2002，40，1： | 1 |
| 7 | Hydroponics water management using adaptive scheduling with an on-line optimizer显示文摘 | Sigrimis N Arvanitis K G Pasgianos G D | 2001 | Computers and Electronics in Agriculture2001，，31： | 1 |
| 8 | Statistical properties of core network Internet traffic显示文摘 | C C Constantinou T N Arvanitis | 2002 | Electronics Letters2002，38，7： | 1 |
| 9 | Building software agents training systems: a case study on radiotherapy treatment planning 显示文摘 | Arvanitis T N | 1997 | Knowledge-based Systems1997，10，2： | 1 |
| 10 | Do specific forms of university-industry knowledge transfer have different impacts on the performance of private enterprises? An empirical analysis based on Swiss firm data显示文摘 | Arvanitis S Sydow N Woerter M | 2008 | Journal of Technology Transfer2008，33，5： | 1 |
| 11 | Mutational analysis of the cell cycle inhibitor kipl/P27 in childhood leukemia 显示文摘 | Markaki EA Stiakaki E Zafiropoulos A Arvanitis DA Katzilakis N Dimitriou H | 2006 | Pediatr Blood Cancer2006，47，1： | 1 |
| 12 | New Tuning and Identification Methods for Unstable First Order Plus Dead - Time显示文摘 | P N Paraskevopoulos G D Pasgianos and K G Arvanitis | 2004 | IEEE Trans Control Systems Technology2004，12，3： | 1 |
| 13 | A signal filtering method for improved quantification and noise discrimination in fourier transform ion cyclotron resonance mass spectrometry-based metabolomics data显示文摘 | PAYNE T G SOUTHAM A D ARVANITIS T N | 2009 | Journal of the American Society for Mass Spectrometry2009，20，6： | 1 |
| 14 | Deregulation of RNA polymerase Ⅲ transcription in cervical epithelium in response to high-risk human papillomavirus 显示文摘 | Daly N L Arvanitis D A Fairley J A | 2005 | Oncogene2005，24，5： | 1 |
| 15 | New tuning and identification methods for unstable first order plus dead-time显示文摘 | PARASKEVOPOULOS P N PASGIANOS G D ARVANITIS K G | 2004 | IEEE Transactions on Control Systems Technology2004，12，3： | 1 |
| 16 | Synergism of high and low level systems for the efficient management of greenhouses显示文摘 | Sigrimis N A Arvanitis K G Pasgianos G D | 2000 | Computers and Electronics in Agriculture2000，29，： | 1 |
| 17 | Membrane-associated estrogen receptor and caveolin 1 are present in central nervous system myelin and oligodendrocyte plasma membranes显示文摘 | Arvanitis D N Wang H Bagshaw R D | 2004 | J Neurosci Res2004，75，60： | 1 |
| 18 | Multirate adaptive temperature control of greenhouses 显示文摘 | ARVANITIS K PARASKEVOPOULOS P N VERNARDOS A A | 2000 | Computers and Electronics in Agriculture2000，26，3： | 1 |
| 19 | Synergism of high and low level systems forth efficient management of greenhouses显示文摘 | Sigrimis N A Arvanitis K G Pasgianos G D | 2000 | Computers and Electronics in Agriculture2000，29，： | 1 |
| 20 | Synergism of high and low level systems for the efficient management of greenhouses显示文摘 | Sigrimis N A Arvanitis K G Pasgianos G D | 2000 | Computers and Electronics in Agriculture2000，29，12： | 1 |
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