Measuring tidal volume and functional residual capacity change in sleeping infants using a volume displacement plethysmograph
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چکیده
منابع مشابه
Measuring tidal volume and functional residual capacity change in sleeping infants using a volume displacement plethysmograph.
The noninvasive measurement of infant lung function during unsedated sleep in infants has been a long-standing objective in paediatric respiratory medicine. This note reports on the design and performance of a head-out volume-displacement plethysmograph (VDP) that overcomes some of the limitations of traditional lung function apparatus. The VDP comprises a rigid acrylic box with an integral wat...
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Thoracic gas volume (TGV) was measured with an integrated flow plethysmograph in 15 infants aged 2-34 months. End-expiratory (TGVe) and end-inspiratory (TGVi) airway occlusions were compared, after correction of TGV for the occluded volume above functional residual capacity (FRC). The relationship between pressure at the airway opening (Pao) and volume displaced from the box during airway occlu...
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The advantages of determining thoracic gas volume and functional residual capacity (FRC) via the body plethysmograph have long been recognized.1 In our laboratory, we have found that employing a standard X-Y-T recorder in conjunction with the plethysmograph enables us to determine a more precise measurement of FRC from our measurement of thoracic gas volume. During plethysmographic study, the t...
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In man assuming the upright position, end-tidal P(CO(2)) (P(ETCO(2))) decreases. With the rising interest in cerebral autoregulation during posture change, which is known to be affected by P(ETCO(2)), we sought to determine the factors leading to hypocapnia during standing up from the supine position. To study the contribution of an increase in tidal volume (V(T)) and breathing frequency, a dec...
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ژورنال
عنوان ژورنال: European Respiratory Journal
سال: 1998
ISSN: 0000-0000,0903-1936
DOI: 10.1183/09031936.98.12051186