Zeitschrift für Erkrankungen der Atmungsorgane
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Z Erkr Atmungsorgane · Jan 1990
Comparative Study[A technical inhalation test variant for improving the effectiveness of the use of dose aerosols].
We compared the airway responsiveness to beta 2-agonist aerosol inhalation with two breathing techniques for bronchodilator testing in 25 patients with COPD. Open breathing technique showed better results than closed breathing technique. Causes for these results like optimization of volume and flow conditions for aerosol deposition are discussed.
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Since 1980 an increase of the frequency of osteomyelitis after BCG vaccination has been described by some european countries. In the GDR osseous impairments as BCG complication are rarely. The authors report on an 18 months old boy with lesions of the distal tibia and the ankle-joint. ⋯ In contrast to the local findings general symptoms were unimportant. The surgical treatment was completed by antituberculotic chemotherapy. This treatment was successful.
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Z Erkr Atmungsorgane · Jan 1989
Review[Equipment combination for the use of normal frequency and high frequency jet ventilation].
Over the last eight years high-frequency ventilation has been extensively evaluated both in the clinical and laboratory settings. Two types of jet ventilators for application of normofrequency and high-frequency jet ventilation have been developed. A combined equipment is described with gas mixer, heater-humidifier, monitoring, membrane solenoid valve and a special injection system.
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Z Erkr Atmungsorgane · Jan 1989
Comparative StudyIncrease of the oxygenation and decrease of the intrapulmonary peak pressure at constant mean airway pressure using high-frequency jet ventilation in adult rabbits with lavage-induced severe respiratory distress syndrome compared to conventional mechanical ventilation.
Reports are contradictory about the value of high-frequency jet ventilation (HFJV) in the treatment of respiratory distress syndrome (RDS) [10, 11, 18 - 1, 2, 22, 25]. In a preliminary study on rabbits with healthy as well as surfactant deficient lungs, caused by lung lavage, at a constant mean airway pressure (MAP) and 20% inspiration time, the influence of the jet ventilation frequencies of 1, 3, 5, 10, 15 and 20 Hz (cycles per second) on the pressure oscillations along the airways as well as on blood gas and cardiac parameters were investigated. It was presumed that the breathing level, e.g. functional residual capacity plus 50% of the tidal volume is the same at constant MAP. ⋯ Optimal gas exchange could be obtained at about 10 Hz. Decreasing cardiac output with increasing frequency showed a good correlation to the pH in both groups. The effect was more influenced by the heart frequency than by the stroke volume especially in the RDS-group.
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Z Erkr Atmungsorgane · Jan 1989
[Secretolysis using high frequency jet ventilation (HFJV) in ventilation obligatory status asthmaticus].
With high frequency jet-ventilation superimposed on intermittent positive pressure ventilation a good secretolysis was obtained. Preliminary results in patients with mechanical ventilation during status asthmaticus are presented.