| 1. |
- Bergqvist, D, et al.
(författare)
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Haverikommission granskade karotiskirurgins komplikationer. Hälften kunde förklaras med misstag eller tveksamma indikationer
- 2000
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Ingår i: Läkartidningen. - 0023-7205. ; 97:14, s. 1673-1676
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Tidskriftsartikel (refereegranskat)abstract
- As carotid endarterectomy is a prophylactic procedure, it would seem particularly important to analyze complications with an aim to avoiding them. All carotid endarterectomies in Sweden are registered, and all serious complications (death and permanent neurological deficit) are analyzed in detail, classified and discussed within the profession. During the period 1994-1996 the frequency was 4.3 percent (technical causes in 17 percent, contraindications in 8 percent and dubious indications in 21 percent, but correct indication and surgery in 54 percent). Thus, even when conditions are optimal there is a certain price to pay for the prevention of ischemic stroke.
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| 2. |
- Wahlgren, N G, et al.
(författare)
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Multidisciplinärt samarbete bakom kvalitetsregister för karotiskirurgi. God täckningsgrad under de första två verksamhetsåren
- 2000
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Ingår i: Läkartidningen. - 0023-7205. ; 97:14, s. 1678-1678
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Tidskriftsartikel (refereegranskat)abstract
- Carotid surgery prevents recurrent stroke in patients with symptomatic tight stenosis of the carotid artery. The Swedish Carotid Surgery Monitoring Registry seeks to promote selection of patients with significant spontaneous risk for recurrent stroke, with an eye toward expediting evaluation and minimizing surgical complications. To this end, professionals at participating hospitals are informed about their own patient selection and surgery risk in comparison with those in the country as a whole and with set targets. We report the results from the first two years, during which it is estimated that more than half of all patients eligible for carotid surgery in Sweden were included in the registry. Although almost all patients had recent onset of relevant neurological symptoms, less than 60% had a documented tight (80-99% occlusion) stenosis. While the final decision to operate a patient was made within 4 weeks of onset of symptoms for only 18% of the patients the first year, this proportion increased to 33% in the following year. The total incidence of surgery related stroke, myocardial infarct and death was 7.7%, while the incidence of severe stroke, myocardial infarct and death was 3.0%.
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| 3. |
- Li, Z. S., et al.
(författare)
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Lifetime measurements in Ce I, Ce II, and Ce III using time-resolved laser spectroscopy with application to stellar abundance determinations of cerium
- 2000
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Ingår i: Physical Review A - Atomic, Molecular, and Optical Physics. - 1050-2947. ; 62:3, s. 32501-32505
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Tidskriftsartikel (refereegranskat)abstract
- Natural lifetimes were measured by time-resolved observation of laser-induced fluorescence. Free Ce, Ce+, and Ce++ particles were obtained in a laser-produced plasma. Lifetimes were measured for eight levels of singly ionized cerium, as well as for nine levels of doubly ionized cerium. The lifetime data were compared with previously published experimental and theoretical results.
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| 4. |
- Li, Z. S, et al.
(författare)
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Lifetime measurements in CeI, CeII, and CeIII using time-resolved laser spectroscopy with application to stellar abundance determinations of cerium
- 2000
-
Ingår i: Physical Review A (Atomic, Molecular and Optical Physics). - 1050-2947. ; 62:3
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Tidskriftsartikel (refereegranskat)abstract
- Radiative lifetimes of two levels in Ce I, eight levels in Ce rr, and nine levels in Ce III have been measured using the time-resolved laser-induced fluorescence technique. Free cerium atoms and singly and doubly ionized ions were obtained in a laser-produced plasma. A narrow bandwidth UV laser pulse was employed to selectively populate the short-lived upper levels and the lifetime values were evaluated from the time-resolved fluorescence signals recorded by a fast detection system. Transition probabilities for Ce III were obtained from branching fractions calculated by the Cowan code and the experimental lifetimes. The results are compared with previous measurements and calculations. Spectral Lines of Ce III were identified in the spectrum of the magnetic chemically peculiar star alpha(2)CVn and the abundance of cerium was determined from synthetic spectrum fitting to be 800 times greater than the solar abundance.
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| 5. |
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| 6. |
- Eriksson, Mattias, et al.
(författare)
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Fe II fluorescence in symbiotic stars
- 2004
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Ingår i: Revista Mexicana de Astronomia y Astrofisica Conference Series 21. - Merida, Yucatan, Mexico. ; , s. 132-136
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Konferensbidrag (refereegranskat)
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| 7. |
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| 8. |
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| 9. |
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