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  • 1
    ISSN: 1365-2044
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: To determine the contribution of extracranial oxygenation on regional cerebral oxygenation measured by an Invos 3100 near-infrared spectrometer, we measured oxygenation in blood drawn from both the facial vein (draining substantially blood from forehead areas) and the jugular venous bulb. There was no correlation between regional cerebral oxygenation and facial vein oxygenation (p = 0.35) but there was a significant correlation between regional cerebral oxygenation and jugular venous bulb oxygenation (p = 0.027). Linear regression analysis predicted a 3.6% change in regional oxygenation for every 10% change in jugular venous bulb oxygenation. We showed that extracranial tissue oxygenation had a negligible influence on the values recorded using near-infrared spectroscopy. Individual changes in jugular venous bulb oxygenation were poorly reflected. Data obtained by this near-infrared spectroscopy device are an unreliable guide to the adequacy of cerebral oxygenation.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Pediatric anesthesia 3 (1993), S. 0 
    ISSN: 1460-9592
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The conditions for intubation were studied in 28 infants (age 1–14 months, ASA I/II) after intravenous administration of propofol or atracurium. Anaesthesia was induced via mask with halothane and N2O/O2. The study propofol group (GrP, n= 14) received a bolus of propofol 3.0 mg·kg−1, whilst the control atracurium group (GrA, n= 14) received atracurium 0.4 mg·kg−1. Intubation conditions were listed as excellent, moderate or impossible in GrP 79%–14%−7% and in GrA 72%–14%–14% respectively. A decrease of mean arterial pressure (GrP–9.17 ± 10.8 mmHg, −13% GrA–9.67 ± 15.2 mmHg, −12%) and heart rate (GrP–18 ± 21 bpm; GrA–14 ± 23 bpm) were seen after induction with halothane. After intubation the mean arterial pressure increased. The increase of heart rate observed after intubation was higher in GrA (GrP +6 ± 8 bpm; GrA +17 ± 19 bpm). The same intubation scores found with propofol in comparison with atracurium may be due to the reflex-suppressive and stress-inhibitory effect of propofol. Since excellent conditions for intubation were found with comparable smaller effects on measured haemodynamic parameters, propofol is regarded as a safe alternative to atracurium to facilitate intubation.
    Type of Medium: Electronic Resource
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