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  • 1
    Electronic Resource
    Electronic Resource
    Anatomic guidelines for the prevention of abdominal wall hematoma induced by trocar placement (1999)
    Springer
    Surgical and radiologic anatomy 21 (1999), S. 87-89 
    Details
    ISSN: 1279-8517
    Keywords: Inferior epigastric artery ; Endoscopy ; Laparoscopy ; Complication ; Hematoma
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A knowledge of the parietal structures of the abdominal wall is necessary to minimize risks of operative procedures like laparoscopy. For means to prevent intraoperative bleeding and the occurrence of abdominal wall hematoma, we studied the course of the inferior epigastric arteries and the ascending branch of the deep circumflex iliac artery in 21 human cadavers. The abdominal wall structures were dissected and the distances of the arteries in relation to anatomic structures such as the umbilicus, pubic symphysis, superior ischial spine and lower edge of the rib-cage were measured. Comparison of the morphometric results obtained with the location of 36 trocar incision sites recommended in the common literature yields the information that about half of these incision sites incur the risk of injuring the arteries.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s00276-999-0087-9
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Results of modelling and physiological examination of movement-related heart-rate reactions in neonates (1988)
    Springer
    Medical & biological engineering & computing 26 (1988), S. 599-604 
    Details
    ISSN: 1741-0444
    Keywords: Actogram ; Heart rate ; Movement ; Neonates ; Signal analysis ; Simulation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Abstract It can be shown that the sequence of spontaneous movements in the active sleep of healthy neonates can be described as a Poisson process. This statistical model is the basis of the modelling of movement-related heart-rate reactions (MRHR) as a secondary process. Modelling these processes gives essential information about possible diagnostic parameters such as the mean frequency of classified movements in active sleep (AS), and characteristics of the course of MRHR. Optimisation of the reliability of interpreting power spectral parameters, analysis of longterm rhythms and designation of the physiological trends of neonatal heart rates can be attained if the results of time series analysis are compared with fitted simulations. Modifications and new techniques of data acquisition and processing are created by means of the computer model.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02447497
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Using discrete Hibert transformation for interval-related calculation of the respiration rate in neonates (1991)
    Springer
    Medical & biological engineering & computing 29 (1991), S. 249-253 
    Details
    ISSN: 1741-0444
    Keywords: Discrete Hilbert transformation ; Neonates ; Respiration rates
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Abstract From the basis of the fast Fourier transformation (FFT), the discrete Hilbert transformation (DHT) is used to compute the instantaneous respiration rate in neonates. This interval-related computation of respiration rate must be combined with a concept of adaptive filtration of the respiratory movements. This strategy is performed by adaptive recursive estimations of mean values with different adaptation constants. Additionally, a frequency band limitation is carried out on the basis of the peak characteristic of the power spectrum (respiratory movements). By means of the adaptive estimation of the variance of respiratory movements, an amplitude-time window is calculated to choose between epochs with breaths and apnoea.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02446706
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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