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  • 1985-1989  (2)
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  • 1
    ISSN: 1420-908X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The electrophysiological changes induced by sequential infusion of histamine (H) (0.4 and 1.0 mcg/kg/min for 10 min each) were investigated by conventional ECG and High Resolution ECG (H.R.ECG). The latter permits external non-invasive recording of the potentials generated in the cardiac conduction system. H was infused i.v. in 5 normal volunteers with a mean age of 30 years. H infusions were begun with 0.4 mcg/kg/min and continued for 10 min. After a 60 min recovery period a second 10 min infusion (1 mcg/kg/min) was administered. In man H produced a dose-dependent increase in heart rate, a significant depression of the ST-T complex, and a depression in STJ point. The QRS complex duration was unmodified. H.R.ECG showed significant changes in the morphology and voltage of the atrial activity. The electrophysiological effects disappeared within a few minutes after discontinuing the infusions of H.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1439-0973
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Die Anwesenheit von Endotoxin im peripheren Blut und seine Beziehung zur Inzidenz und klinischen Manifestation der Leberdysfunktion wurde bei 21 Typhuspatienten untersucht. Der Limulus-Endotoxin-Test war an Plasmaproben bei allen Patienten vor der Behandlung positiv. Bei 90% der Patienten fand sich eine Leberfunktionsstörung, gemessen an den Gallensäurespiegeln nüchtern und postprandial und den biochemischen Standard-Tests. Bei sieben Patienten bestand ausschließlich eine cholestatische Störung (nur Anstieg der postprandialen Gallensäurespiegel); bei 12 Patienten bestand eine gemischte cholestatisch-hepatozelluläre Störung (Erhöhung der beiden Gallensäurewerte und der Aminotransferase-Spiegel). Nach der Genesung war bei allen Patienten der Limulus-Test negativ und die Leberfunktionsparameter hatten sich normalisiert. Die Ergebnisse zeigen, daß bei Typhuspatienten eine Endotoxinämie auftritt. Da Endotoxin die Gallensekretion beeinträchtigen kann, lassen unsere Ergebnisse darauf schließen, daß Endotoxin an der Pathogenese der Leberschädigung bei Typhus beteiligt ist.
    Notes: Summary Twenty-one patients with typhoid fever were studied to evaluate the presence of endotoxin in peripheral blood and its relationship to the incidence and features of hepatic dysfunction which may occur during this disease. The limulus test for endotoxin was positive in the plasma samples of all patients prior to treatment. Liver dysfunction, as assessed by fasting and postprandial serum bile acid levels and by standard biochemical tests, occurred in 90% of patients. In seven, the injury was purely cholestatic (elevation of postprandial serum bile acid levels, alone); in 12, it was of mixed cholestatic-hepatocellular type (elevation of both serum bile acids and aminotransferase levels). After recovering, the limulus test was negative and liver function tests returned to normal values in all patients. The results demonstrate that endotoxemia is present in patients with typhoid fever. In addition, since endotoxin can impair bile secretion, our results suggest that endotoxin may have a pathogenetic role in the development of liver injury during typhoid fever.
    Type of Medium: Electronic Resource
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