Download or read book A Computerized Method for Instantaneous and Continuous Measurements of Expired Nitrogen written by John Abajian and published by . This book was released on 1967 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt: The basis for the on-line study of pulmonary nitrogen washout by hybrid computer is presented. The instrument produces a semilogarithmic plot of nitrogen concentration in expired gas versus cumulative alveolar ventilatory volume. Simultaneous measurements of functional residual capacity and main conducting airway volume are also recorded. Comparison of conventional washout methods and computer technique proved the validity of the computer. Secondly, a new index of intrapulmonary gas distribution is devised. The index (IDI or Inspired Gas Distribution Index) is quite sensitive to any change of the gas distribution in the lung and has a very small physiological variation (1.8 plus or minus 0.2). As one application of this computer in research, the effect of expiratory obstruction in normal subjects is studied. A 5 mm. diameter obstruction does not affect the gas distribution in the supine position, whereas the obstruction has a striking effect on gas distribution when a subject is exercising in the upright position. (Author).

Download or read book Further Clinical and Research Applications of a Computerized Method for Instantaneous and Continuous Measurements of Expired Nitrogen written by Richard A. Anderson and published by . This book was released on 1970 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt: Current research applications of a computerized method for instantaneous and continuous measurements of expired nitrogen are presented. Projects already completed, now in progress and being implemented include: (1) evaluation of intrapulmonary gas distribution in patients with various types of pulmonary disease; (2) definition and classification of nitrogen washout patterns in patients with various types of cardiac disease; (3) study of intrapulmonary distribution of respired gas and pulmonary mechanics during induced pulmonary vascular congestion in the rabbit; (4) investigation of pulmonary mechanics and washout patterns in the rabbit following papain destruction of the lung's parenchymal meshwork; (5) delineation of changes in washout patterns during ventilation with varying tidal volume, respiratory frequency and inspiratory flow rates; (6) definition of newborn infants' nitrogen washout patterns and lung volumes; the defects of intrapulmonary gas distribution encountered in the respiratory distress syndrome of the newborn; and (7) longitudinal study of washout characteristics in a group of patients with chronic bronchitis with particular reference to development of chronic obstructive emphysema. (Author).

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Download or read book Government wide Index to Federal Research Development Reports written by and published by . This book was released on 1968 with total page 670 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book U S Government Research and Development Reports Index written by and published by . This book was released on 1968 with total page 1492 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bibliography of Scientific and Industrial Reports written by and published by . This book was released on 1970 with total page 870 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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Download or read book Involvement of Computers in Medical Sciences written by and published by . This book was released on 1969 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over 1500 entries to monographic and serial literature, arranged in classified order. Author, subject indexes.

Download or read book U S Government Research Development Reports written by and published by . This book was released on 1970 with total page 1342 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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Download or read book The European Respiratory Journal written by and published by . This book was released on 1993 with total page 850 pages. Available in PDF, EPUB and Kindle. Book excerpt: