| 1. |
- Aström Olsson, Karin, et al.
(författare)
-
No increase of plasma malondialdehyde after primary coronary angioplasty for acute myocardial infarction.
- 2002
-
Ingår i: Scandinavian Cardiovascular Journal. - : Informa UK Limited. - 1651-2006 .- 1401-7431. ; 36:4, s. 237-240
-
Tidskriftsartikel (refereegranskat)abstract
- OBJECTIVE: Free radicals formed after coronary artery occlusion and reperfusion are assumed to produce myocardial stunning and possibly other forms of reperfusion injury as well. Malondialdehyde (MDA) is an end product in the lipid peroxidation chain reaction and is frequently used as a marker for free oxygen radical production. Increased levels of plasma MDA have been found following successful thrombolytic therapy. The aim of this study was to investigate whether plasma MDA levels also increase after successful primary percutaneous transluminal coronary angioplasty (PTCA) in acute myocardial infarction (AMI). DESIGN: In 23 patients with AMI, treated with primary PTCA, plasma MDA was analysed using a high-performance liquid chromatography method (HPLC). The results obtained with this method were compared with those obtained with a fluorimetric assay of thiobarbituric acid reactive substances (TBARS). This assay measures MDA but with a lower specificity. RESULTS: We found a significant decrease of plasma MDA from baseline 0.99 to 0.87 micro mol/l at 30 min and to 0.90 micro mol/l at 90 min following the primary PTCA (p = 0.048 and 0.014, respectively). No significant changes in TBARS method levels were observed. CONCLUSION: Instead of the expected increase in MDA following reperfusion we found a significant decrease. The results from measurements of MDA and TBARS were significantly incompatible. The results raise serious doubts as to the usefulness of increased plasma levels of MDA as a marker of oxidative stress caused by coronary reperfusion in patients treated with angioplasty.
|
|
| 2. |
- Fokkema, Marieke L, et al.
(författare)
-
Population Trends in Percutaneous Coronary Intervention 20-Year Results From the SCAAR (Swedish Coronary Angiography and Angioplasty Registry)
- 2013
-
Ingår i: Journal of the American College of Cardiology. - : Elsevier BV. - 0735-1097 .- 1558-3597. ; 61:12, s. 1222-1230
-
Tidskriftsartikel (refereegranskat)abstract
- Objectives The aim of this study was to describe the characteristics and outcome of all consecutive patients treated with percutaneous coronary intervention (PCI) in an unselected nationwide cohort over the past 2 decades. Background Over the last 20 years, treatment with PCI has evolved dramatically, but the change in patient characteristics has not been well described. Methods We included all patients undergoing a PCI procedure for the first time between January 1990 and December 2010 from the SCAAR (Swedish Coronary Angiography and Angioplasty Registry). Patients were divided into different cohorts on the basis of the year of the first PCI procedure. Results A total of 144,039 patients was included. The mean age increased from 60.1 +/- 9.9 years in 1990 to 1995 to 67.1 +/- 11.2 years in 2009 to 2010. The proportion of patients presenting with unstable coronary artery disease and ST-segment elevation myocardial infarction increased from 27.4% and 6.2% to 47.7% and 32.5%, respectively. Diabetes mellitus and multivessel disease were more often present in the later-year cohorts. The 1-year mortality increased from 2.2% in 1990 to 1995 to 5.9% in 2009 to 2010, but after adjustment for age and indication, a modest decrease was shown, mainly in ST-segment elevation myocardial infarction patients. Conclusions Characteristics of PCI patients have changed substantially over time, reflecting the establishment of new evidence. The increasing age and proportion of patients undergoing PCI for acute coronary syndromes greatly influence outcome. Understanding the changing patient characteristics is important for the translation of evidence to real-world clinical practice. (J Am Coll Cardiol 2013; 61: 1222-30) (C) 2013 by the American College of Cardiology Foundation
|
|
| 3. |
- Gustavsson, Carl G, et al.
(författare)
-
Vein blood rheology alterations immediately after coronary angiography with iohexol, and one month later.
- 1996
-
Ingår i: Clinical Hemorheology. - New York, USA : Pergamon Press. - 0271-5198. ; 16:6, s. 737-743
-
Tidskriftsartikel (refereegranskat)abstract
- Abstract The effects of coronary angiography with iohexol upon vein blood rheology were studied before, immediately after and one month after angiography. Haematocrit decreased from 40.5 % to 39.0 % immediately after angiography (p < 0.01). When this was compensated for by in vitro standardisation of sample haematocrits to 45% there was a blood viscosity increase by 10.9 - 15.0 %, at the four studied shear rates 0.8 s-1, 2.3 s-1, 19.6 s-1, and 40.0 s-1 (p < 0.05 - p < 0.01). In unadjusted samples, i.e. at the patients natural haematocrits, there was only a slight and statistically non-significant blood viscosity increase. Plasma viscosity decreased immediately after angiography, and was even lower 1 month after angiography. The haematocrit reduction correlated significantly with the iohexol doses (correlation coefficient -0.852, p < 0.001), whereas no significant correlation was found between the contrast volumes and the alterations of blood and plasma viscosity. Except for plasma viscosity, there were no significant differences when the values before angiography and one month later were compared. Key words: Blood viscosity; Contrast media; Iohexol; Coronary angiography; Haematocrit; Haemorheology
|
|
| 4. |
- Thorvinger, Björn, et al.
(författare)
-
Computed tomography of the thymus Gland in myasthenia gravis
- 1987
-
Ingår i: Acta Radiologica. - : SAGE Publications. - 0284-1851 .- 1600-0455. ; 28:4, s. 399-401
-
Tidskriftsartikel (refereegranskat)abstract
- Sixteen consecutive patients with myasthenia gravis were examined by computed tomography (CT) before thymectomy. Surgical and histologic findings were compared with those obtained at CT. The results, like those of most other recent studies, indicate that CT is a reliable method for identifying thymoma. In all three patients with thymoma, and in five out of eight patients with hyperplasia, the lesion was observed at CT, giving an overall accuracy of 80 per cent. Although tymic hyperplasia is a basically histologic diagnosis an enlarged gland may give a correct diagnosis of this abnormality.
|
|
| 5. |
- Thorvinger, Björn, et al.
(författare)
-
Staging in local endometrial carcinoma. Assessment of magnetic resonance and ultrasound examinations
- 1989
-
Ingår i: Acta Radiologica. - 1600-0455. ; 30:5, s. 525-529
-
Tidskriftsartikel (refereegranskat)abstract
- Possible deep (more than an inner third of the uterine wall) myometrial invasion and cervical extension of endometrial carcinoma were evaluated prospectively using magnetic resonance (MR) and transabdominal real-time sonography (US) in 20 and 10 patients, respectively. The data obtained from these examinations were compared with hysterosalpingography (HSG) and clinical modalities including hysteroscopy, sounding and histopathologic findings after surgery. The concordance of outlining cervical extension was between MR and hysteroscopy 85 per cent, and between US and hysteroscopy 50 per cent. Deep myometrial tumor invasion was suggested in 4/10 patients by US and in 6/20 by MR, and was confirmed in all but one in each group at histologic examination of the resected uterus. There were no false negative US or MR examinations. Transabdominal US did not prove accurate in defining local endometrial carcinoma (distinguishing between stages I and II), but it may be used as an additional tool in revealing myometrial invasion. MR, however, seems to refine the delineation of uterine tumor growth.
|
|
