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  • 1
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Journal of Molecular and Cellular Cardiology 16 (1984), S. 1151-1160 
    ISSN: 0022-2828
    Keywords: DNA synthesis ; Hypertrophy ; Multinucleation
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 69 (1991), S. 37-45 
    ISSN: 1432-1440
    Keywords: Myocarditis ; Electrocardiography ; Myocardial infarction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary We report on 4 patients in whom acute myocardial infarction was suspected due to acute onset of chest pain and elevation of the ST-segment. Furthermore in 2 patients the echocardiography revealed regional abnormal wall motion on admission, the others later. Coronary angiography showed normal coronary arteries in all cases. The left ventricular angiogram namely demonstrated regional abnormal wall motion. 2 patients developed a slight increase of the creatine phosphokinase including the CK-MB. Only one patient mentioned a grippal infectious disease 6 weeks before. During the hospital time all patients presented one of the inflammatory signs. A demonstration of the infectious agent was not possible in any of the cases. The endomyocardial biopsy was positive in two cases, and slightly positive in one case. Sometimes regional myocarditis might imitate an acute myocardial infarction. Both, the exact anamnesis and coronary angiography are necessary. The performance of an endomyocardial biopsy is desirable.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Virchows Archiv 421 (1992), S. 127-131 
    ISSN: 1432-2307
    Keywords: Saphenous vein ; Histology ; Coronary bypass
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The influence of pre-existing phlebosclerosis on the patency rate of aorto-coronary bypasses is uncertain. To examine this influence, extensive quantitative histological investigations of the intimal thickness of the left saphenous vein were made in 30 cases. In almost all veins the intima was thickened by collagen and elastic fibres as well as by fusiform cells which were assumed to be smooth muscle cells. The innermost layers also contained increased collagen adding to the intimal thickening. Three different methods to measure the intimal thickness were tested morphometrically: planimetric, a four-point method and a so-called method of estimate. The latter is the most time-saving and effective method. The average intimal thickness showed considerable deviations, but the intimal thickness in individual veins did not deviate greatly. As a rule, a specimen with an intimal thickness of less than 100 μm belonged to a vein with mild or moderate intimal thickening, but specimens with an average intimal thickness of 100–250 μm usually derived from a vein with moderate or pronounced intimal fibrosis. However, extreme values allowed a more precise statement to be made. A specimen with a non-sclerotic intima suggested at best a mild intimal fibrosis of the vein in the lower limb, whereas a specimen with marked intimal thickening derived from a vein with severe phlebosclerosis.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 67 (1989), S. 1199-1204 
    ISSN: 1432-1440
    Keywords: Myocardial infarction ; Arrhythmia ; Fibrinolysis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary For the purposes of the European double blind and randomized study 27 patients with acute myocardial infarction underwent thrombolysis with rt-PA (60 mg over 90 minutes i.v.) or placebo. To evaluate whether arrhythmias, especially ventricular arrhythmias indicate coronary reperfusion after thrombolysis a 24 hour Holter monitoring was performed from the beginning of the rt-PA or placebo infusion. Typical reperfusion arrhythmias were thought to be idioventricular rhythms (rate 〈110/min), ventricular tachycardia (rate 〉110/min) or bradycardic rhythm disturbances (rate 〈50/min). The effect of thrombolysis on reperfusion of the infarct related artery was evaluated 90 minutes after the infusion by coronary angiography. After 90 minutes of rt-PA or placebo infusion in 16/16 patients treated with rt-PA and 2/11 patients, who received placebo, was the infarct atery patent. 16/18 patients with a patent artery presented a total of 105 arrhythmic events. 47% of the arrhythmias obviously due to reperfusion were classified as idioventricular rhythms. In contrast only 3/9 patients with an occluded infarct artery presented 25 arrhythmic events. The time of occurence was not different during the running rt-PA infusion compared to placebo. The following interval up to 24 hours showed no difference in incidence and type of the arrhythmias. No relationship was found between reperfusion arrhythmias and salvage of myocardium during 90 minutes of rt-PA or placebo infusion. It is concluded: 1. 89%, i.e. in 16 patients with a patent infarct artery reperfusion arrhythmias were found within 90 minutes after the onset of the infusion therapy. 2. Reperfusion arrhythmias seemed to be independant of myocardial salvage. 3. Absence of idioventricular rhythms or ventricular tachycardia is highly suggestive of an occluded infarct vessel.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Acta neuropathologica 64 (1984), S. 167-171 
    ISSN: 1432-0533
    Keywords: Congenital Leigh's disease ; Panencephalomyelopathy ; Peripheral neuropathy ; Mitochondriopathies
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A dystrophic newborn girl (38th week of gestation) presented as a floppy infant with relapsing episodes of lactic acidosis and progressive cerebral deterioration. She died after serious apnoea at the age of 8 weeks. Neuropathological examination demonstrated widespread changes of Leigh's subacute polioencephalomyelopathy affecting the cerebral cortex, basal ganglia, mesencephalon and spinal cord. In addition, there was severe leukoencephalopathy of the cerebral hemispheres with sudanophilic tissue degregation, advanced axonal loss and reactive astrocytic gliosis. There was marked demyelination of the sciatic nerves. Electron-microscopical examination of the hypertrophic heart revealed pathological mitochondria with tubular inclusions suggestive of primary mitochondrial cardiomyopathy. Similar mitochondrial changes were not detected in the CNS and PNS. The complex of neuropathological alterations in this case is nevertheless consistent with a congenital variant of Leigh's disease.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1435-1285
    Keywords: Schlüsselwörter¶Intravaskulärer Ultraschall –¶direktionale Koronaratherektomie – quantitative Koronarangiographie ; Key words¶Intravascular ultrasound –¶directional coronary atherectomy –¶quantitative coronary angiography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary In contrast to the luminogram of coronary angiography, intravascular ultrasound (IVUS) has proven to accurately assess both coronary lumen and vessel morphology due to its 360° imaging capacity. Directional coronary atherectomy (DCA) improves the coronary lumen by removing plaque mass rather than stretching the vessel and compressing the plaque as with conventional percutaneous transluminal coronary angioplasty. In an attempt to optimize the procedural result of DCA we prospectively investigated the impact of IVUS guidance in a head to head comparison to on-line quantitative coronary angiography (QCA) on the result of DCA.¶   In 16 consecutive patients IVUS demonstrated significant residual plaque mass after DCA irrespective of a satisfactory angiographic result. After a mean of 9±2 cuts luminal improvement was obtained with an area stenosis by angiography of 39±17% and by IVUS of 50±10% (p〈0.05), a diameter stenosis by angiography of 23±10% and IVUS of 35±14% (p〈0.05) and finally a minimal lumen diameter (MLD) by angiography of 2.9±0.5 mm and by IVUS of 2.3±0.5 mm (p〈0.005). After both on-line QCA and IVUS measurements a second series of 7±2 cuts were initiated to debulk more atheroma and improve stenosis dimensions. After additional cuts IVUS revealed further luminal improvement with an area stenosis by angiography of 25±16% and IVUS of 21±18% (n.s.), a diameter stenosis by angiography of 16±11% and by IVUS of 13±19% (n.s.) and finally a MLD by angiography of 3.1±0.5 mm and by IVUS of 2.8±0.3mm (p〈0.05).¶   Intraprocedual use of IVUS is superior to on-line QCA to assess the immediate result of DCA. IVUS-guided DCA results in more effective atheroma debulking than luminographic evaluation. Results of larger follow-up studies are needed to substantiate the intraprocedural advantage of IVUS with DCA.
    Notes: Zusammenfassung Im Gegensatz zur Koronarangiographie kann mittels intravaskulärem Ultraschall (IVUS) neben dem Lumen auch die Gefäßwandstruktur dargestellt werden. Die direktionale Koronaratherektomie (DCA) führt zu einer Lumenverbesserung durch direkte Plaqueentfernung im Gegensatz zur Gefäßweitung bei der transluminalen Angioplastie. Da durch die Koronarangiographie eine direkte Darstellung der Plaquereduzierung nicht möglich ist, untersuchten wir den Einfluß einer IVUS-gesteuerten DCA im Vergleich zur alleinigen Steuerung durch die quantitativen Koronarangiographie (QCA).¶   Bei 16 konsekutiven Patienten konnte durch IVUS, trotz eines guten angiographischen Ergebnisses, eine relevante Restplaquemenge diagnostiziert werden. Nach im Mittel 9±2 DCA-Schnitten wurde eine Verbesserung der Flächenstenose auf 39±17% mittels Angiographie und auf 50±10% (p〈0,05) mittels IVUS festgestellt; die Diameterstenose reduzierte sich auf 23±10% angiographisch und auf 35±14% (p〈0,05) mittels IVUS. Der minimale Lumendiameter (MLD) stieg auf angiographisch auf 2,9±0,5mm und im IVUS auf 2,3±0,5mm (p〈0,005). Nach einer unmittelbar durchgeführten zweiten DCA-Serie von im Mittel 7±2 DCA-Schnitten kam es zu einer weiteren signifikanten Lumenverbesserung. Die Flächenstenose betrug nun mehr 25±16% angiographisch und 21±18% im IVUS (n.s.), die Diameterstenose sank auf 16±11% angiographisch und 13±19% im IVUS (n.s.). Der MLD stieg weiter auf 3,1±0,5 mm angiographisch und 2,8±0,3 mm im IVUS (p〈0,05).¶   Dies läßt den Schluß zu, dass die IVUS gesteuerte DCA der QCA-gesteuerte DCA überlegen ist. Die IVUS-gesteuerte DCA führt zu signifikant größeren Plaqueentfernung im Vergleich zur alleinigen angiographischen Kontrolle. DCA sollte mit IVUS kombiniert werden.
    Type of Medium: Electronic Resource
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