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  • 1
    Electronic Resource
    Electronic Resource
    COMPARISON OF HAEMODYNAMIC RESPONSES TO POSITIVE-END-EXPIRATORY VENTILATION AND PERICARDIAL EFFUSION IN DOGS (1980)
    Oxford, UK : Blackwell Publishing Ltd
    Clinical and experimental pharmacology and physiology 7 (1980), S. 0 
    Details
    ISSN: 1440-1681
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: 1. The haemodynamic responses to progressive increments in positive end-expiratory pressure ventilation (PEEP) were assessed in dogs in the presence and absence of pericardial effusion (2-2 ml saline/kg).2. Increasing levels of PEEP (0, 4, 8, 16 cm H2O) were associated with increases in right atrial, left atrial, pericardial and pulmonary artery diastolic pressure; increases in pulmonary vascular resistance; decreases in aortic blood pressure; and decreases in cardiac index or stroke index.3. Pericardial effusion that was associated with an increase in pericardial pressure of 3 mmHg was not associated with significant changes in aortic blood pressure or stroke index. In contrast 8 cm PEEP was associated with significant decreases in both these haemodynamic variables yet pericardial pressure increased only 2-2 mmHg.4. For these levels of PEEP and pericardial effusion, the same haemodynamic response to PEEP was observed regardless of the presence or the absence of pericardial effusion.5. Similar changes in aortic blood pressure and stroke index despite different pericardial pressures is reflected by significantly different intercepts in the linear model relating these haemodynamic variables to pericardial pressure in the presence and absence of pericardial effusion.6. The results suggest that these haemodynamic consequences of PEEP are primarily a function of pulmonary hyperinflation and are less dependent on increases in extracardiac pressure per se.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1440-1681.1980.tb00059.x
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  • 2
    Electronic Resource
    Electronic Resource
    Prospective assessment of risk of bacteremia with colonoscopy and polypectomy (1987)
    Springer
    Digestive diseases and sciences 32 (1987), S. 1239-1243 
    Details
    ISSN: 1573-2568
    Keywords: colonoscopy ; polypectomy ; bacteremia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A prospective assessment was made of the frequency of positive blood cultures in patients undergoing colonoscopy with or without polypectomy. A total of 270 patients underwent 280 colonoscopies, of these, there were 105 patients that had 111 polypectomies. Blood cultures were taken prior to and within 15 min following each procedure. Six of 280 (2.1%) preprocedural blood cultures were positive. Seven of 169 (4%) blood cultures were positive within 15 min of insertion of the colonoscope in the colonoscopy only group. Eight of 223 (3.6%) blood cultures were positive within 10 min of the polypectomy. There was no clinical evidence of sepsis during the 24 hr following these procedures. In order to determine appropriate postprocedural sampling interyals, we induced aStaphylococcus epidermidis bacteremia with a mean of 1.16×106 colony forming units/ml on 10 occasions in seven dogs. Within 30 min of inoculation, we were able to detect only one colony forming unit/ml. The rate of positive blood cultures during colonoscopy alone and following polypectomy during colonoscopy is comparable to other gastrointestinal endoscopy procedures. The most optimal time to collect blood cultures in order to detect transient bacteremia is as soon after the procedure as is feasibly possible.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01296372
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    Paper (German National Licenses)
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