[Acoustic frequency analysis of auscultation findings in neonates].

The authors analyzed 280 auscultation findings of 35 neonates with birth weights of 1800-4500 g and 65 pathological neonates with birth weights of 1150-3600 g. For recording of the auscultation findings an electronic phonendoscope EST 40 (Bosch) was used and the finding was recorded on a microtape recorder (Olympus). The frequency analysis was made on a Sonagraf analyzer (Kay Elemetric), using a 45 Hz filter a time range of 2.

[Sonographic analysis of postextubation stridor in neonates and children with low birth weight after long-term artificial ventilation].

In a group of 23 neonates with mean birth weights of 1470 g (range 1200-3980 g) who had orotracheal intubation for an average period of 12.6 days (range 5-96 days) sonagraphic frequency analysis of 86 stridors 1-3 hours after intubation was performed. According to the results of the frequency analysis more than 97.

[Transcranial Doppler measurement of hemodynamics in the major cerebral arteries].

Using a pulsed Doppler velocity meter, the authors assessed by a transcranial approach, in order to obtain an idea on the normal haemodynamics of the basal cerebral arteries, the maximal systolic blood flow (Vmax., m.s-1) in these arteries in a group of 25 healthy young men and in 20 healthy children.