| 1. |
- Acosta, Stefan, et al.
(författare)
-
Epidemiology and Prognostic Factors in Acute Superior Mesenteric Artery Occlusion.
- 2010
-
Ingår i: Journal of Gastrointestinal Surgery. - : Springer Science and Business Media LLC. - 1873-4626 .- 1091-255X. ; 14, s. 628-635
-
Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: Reports on trends in incidence and mortality of acute superior mesenteric artery (SMA) occlusion and evaluation of prognostic factors in recent years are lacking. METHODS: Patients with acute SMA occlusion were identified through the in-patient and autopsy registry between 1970 and 1982 (n = 270), 1987 to 1996 (n = 135), and 2000 and 2006 (n = 100) in Malmö, Sweden. RESULTS: The overall incidence rate decreased from 8.6 to 5.4/100,000 person years and the autopsy rate from 87% to 25% over time. A higher serum creatinine level was associated with a lower probability of undergoing multi-detector row computed tomography with intravenous contrast (MDCTiv) (p = 0.006). Not performing a MDCTiv (odds ratio 4.0; 95% confidence interval [1.0-16.0]) remained as independent prognostic factor for in-hospital mortality. General and vascular surgeons collaborated in 25 out of 61 patients that underwent an intervention, of which 21 (84%) (p < 0.001) survived. CONCLUSIONS: A close collaboration between radiologists and general and vascular surgeons seems to be most important to lower the mortality in patients with acute SMA occlusion.
|
|
| 2. |
|
|
| 3. |
- Björnsson, Steinarr, et al.
(författare)
-
Symptomatic Mesenteric Atherosclerotic Disease-Lessons Learned from the Diagnostic Workup.
- 2013
-
Ingår i: Journal of Gastrointestinal Surgery. - : Springer Science and Business Media LLC. - 1873-4626 .- 1091-255X. ; 17:5, s. 973-980
-
Tidskriftsartikel (refereegranskat)abstract
- OBJECTIVE: This study aims to analyze the diagnostic workup in patients referred for endovascular mesenteric revascularization for symptomatic mesenteric atherosclerotic disease. MATERIAL AND METHODS: Fifty-five patients were identified between 2006 and 2011. Median follow-up time was 24 months. RESULTS: Median age was 71 years, 67 % were women. Forty patients had acute on chronic mesenteric ischemia, eight had acute mesenteric ischemia, and seven had chronic mesenteric ischemia. Other manifestations of atherosclerotic disease were present in 71 %. Body mass index (BMI) <20 kg/m(2) was found in 37 %. Endoscopy diagnosed duodenitis (38 %; 13/34) and colitis in the right colon (57 %;12/21). All ulcers tested for Helicobacter pylori were negative (n = 17). Patients received proton pump inhibitor, antibiotic, and cortisone therapy during diagnostic workup in 73, 42, and 29 % of the cases, respectively. Previous hospitalization for the same complaints had occurred in 78 %. CT angiography showed occlusion (n = 30) and high-grade stenosis (n = 25) of the superior mesenteric artery (SMA). Forty-eight patients were treated with stenting of the SMA. The BMI increased in both women (p = 0.001) and men (p = 0.03) after endovascular therapy. The in-hospital mortality rate was 18 %. CONCLUSION: Patients with abdominal pain, known atherosclerotic disease, right-sided colitis or H. pylori-negative duodenitis should undergo CT angiography immediately to be able to identify symptomatic mesenteric atherosclerotic disease.
|
|
| 4. |
- Blohm, My, et al.
(författare)
-
The Sooner, the Better? The Importance of Optimal Timing of Cholecystectomy in Acute Cholecystitis : Data from the National Swedish Registry for Gallstone Surgery, GallRiks
- 2017
-
Ingår i: Journal of Gastrointestinal Surgery. - : Springer Science and Business Media LLC. - 1091-255X .- 1873-4626. ; 21:1, s. 33-40
-
Tidskriftsartikel (refereegranskat)abstract
- Up-front cholecystectomy is the recommended therapy for acute cholecystitis (AC). However, the scientific basis for the definition of the optimal timing for surgery is scarce. The aim of this study was to analyze how the timing of surgery, after the admission to hospital for AC, affects the intra- and postoperative outcomes. Within the national Swedish Registry for Gallstone Surgery and Endoscopic Retrograde Cholangiopancreatography (GallRiks), all patients undergoing cholecystectomy for acute cholecystitis between January 2006 and December 2014 were identified. Data regarding patient characteristics, intra- and postoperative adverse events (AEs), bile duct injuries, and 30- and 90-day mortality risk were captured, and the correlation between the surgical timing and these parameters was analyzed. In total, data on 87,108 cholecystectomies were analyzed of which 15,760 (18.1 %) were performed due to AC. Bile duct injury, 30- and 90-day mortality risk, and intra- and postoperative AEs were significantly higher if the time from admission to surgery exceeded 4 days. The time course between surgery and complication risks seemed to be optimal if surgery was done within 2 days after hospital admission. Although AC patients operated on the day of hospital admission had a slightly increased AE rate as well as 30- and 90-day mortality rates than those operated during the interval of 1-2 days after admission, the bile duct injury and conversion rates were, in fact, significantly lower. The optimal timing of cholecystectomy for patients with AC seems to be within 2 days after admission. However, the somewhat higher frequency of AE on admission day may emphasize the importance of optimizing the patient before surgery as well as ensuring that adequate surgical resources are available.
|
|
| 5. |
|
|
| 6. |
|
|
| 7. |
|
|
| 8. |
|
|
| 9. |
|
|
| 10. |
- Gonzalez-Arribas, Elena, et al.
(författare)
-
Transparent, mediator- and membrane-free enzymatic fuel cell based on nanostructured chemically modified indium tin oxide electrodes
- 2017
-
Ingår i: Biosensors & bioelectronics. - : Elsevier. - 0956-5663 .- 1873-4235. ; 97, s. 46-52
-
Tidskriftsartikel (refereegranskat)abstract
- We detail a mediator- and membrane-free enzymatic glucose/oxygen biofuel cell based on transparent and nanostructured conducting supports. Chemically modified indium tin oxide nanoparticle modified electrodes were used to substantially increase the active surface area without significantly compromising transparency. Two different procedures for surface nanostructuring were employed, viz. spray-coating and drop-coating. The spray-coated biodevice showed superior characteristics as compared to the drop-coated enzymatic fuel cell, as a result of the higher nanostructured surface area as confirmed by electrochemical characterisation, as well as scanning electron and atomic force microscopy. Subsequent chemical modification with silanes, followed by the immobilisation of either cellobiose dehydrogenase from Corynascus thermophiles or bilirubin oxidase from Myrothecium verrucaria, were performed to obtain the bioanodes and biocathodes, respectively. The optimised biodevice exhibited an OCV of 0.67 V and power output of up to 1.4 mu W/cm(2) at an operating voltage of 0.35 V. This is considered a significant step forward in the field of glucose/oxygen membrane- and mediator-free, transparent enzymatic fuel cells.
|
|
