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  • 1
    Electronic Resource
    Electronic Resource
    Effects of prone position on alveolar recruitment and oxygenation in acute lung injury (1999)
    Springer
    Intensive care medicine 25 (1999), S. 1222-1230 
    Details
    ISSN: 1432-1238
    Keywords: Key words Acute respiratory failure ; Alveolar recruitment ; Mechanical ventilation ; Prone position ; Respiratory mechanics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Objective: To investigate the effects of prone position (PP) on alveolar recruitment and oxygenation in acute respiratory failure.¶Design: Prospective physiologic study.¶Setting: Medical ICU two in a university hospital.¶Patients: Twelve adult patients intubated and mechanically ventilated with medical primary acute lung injury/adult respiratory distress syndrome (ALI/ARDS) in whom PP was indicated.¶Measurements and results: We constructed the static inflation volume-pressure curves (V-P) of the respiratory system in the 12 patients and differentiated between lung and chest wall in ten of them. We determined the difference between end-expiratory lung volume on positive end-expiratory pressure (PEEP) and relaxation volume of the respiratory system on zero PEEP (ΔFRC). The recruited alveolar volume was computed as the ΔFRC times the ratio of static elastance of the respiratory system to the lung. These measurements together with arterial blood gases determination were made in supine position (SP1), after 1 h of PP and after 1 h of supine repositioning (SP2) at the same level of PEEP. The PaO2/FIO2 ratio improved from SP1 to PP (136 ± 17 vs 204 ± 24 mm Hg; p 〈 0.01). An PP-induced alveolar recruitment was found in five patients. The change in oxygenation correlated to the recruited volume. The static elastance of the chest wall decreased from 4.62 ± 0.99 cmH2O/l in SP1 to 6.26 ± 0.54 cmH2O/l in PP (p 〈 0.05) without any correlation to the change in oxygenation.¶Conclusions: Alveolar recruitment may be a mechanism of oxygenation improvement in some patients with acute hypoxemic respiratory failure. No correlation was found between change in oxygenation and chest wall elastic properties.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001340051050
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  • 2
    Electronic Resource
    Electronic Resource
    Gene amplifications in advanced-stage human prostate cancer (1995)
    Springer
    Urological research 22 (1995), S. 343-347 
    Details
    ISSN: 1434-0879
    Keywords: Prostate carcinoma ; Prostatic neoplasms ; Gene amplifications ; Oncogenes ; Advanced-stage disease
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Gene amplification is a model of proto-oncogene alterations occasionally observed in human tumors. This amplification can, in some cases, have prognostic value (N-myc in neuroblastoma, c-erbB2 and int-2 in breast cancer, etc.). Amplifications of the proto-oncogenes c-myc, c-erbB2 and int-2 have not yet been report in prostate adenocarcinoma, which, like breast cancer, is hormone dependent. We sought amplifications of these three proto-oncogenes by means of Southern blotting in 15 human prostate adenocarcinoma specimens, most of which were advanced (7 stage C and 6 stage D1 or D2). We confirmed the lack of c-myc and c-erbB2 amplification, regardless of the stage, in contrast to the case of breast cancer. Int-2 amplification was observed in one advanced tumor with bone metastases, out of a total of six stage D tumors. The precise frequency of int-2 amplification and its role in prostate carcinogenesis remain to be determined.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00296872
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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