منابع مشابه
Specific 13C functional pathways as diagnostic targets in gastroenterology breath-tests: tricks for a correct interpretation.
Breath tests are non-invasive, non-radioactive, safe, simple and effective tests able to determine significant metabolic alterations due to specific diseases or lack of specific enzymes. Carbon isotope (13)C, the stable-non radioactive isotope of carbon, is the most used substrate in breath testing, in which (13)C/(12)C ratio is measured and expressed as a delta value, a differences between rea...
متن کاملC carbohydrate breath tests
In paediatric practice proper digestion of carbohydrates is of major importance for adequate growth and development and for prevention of intestinal complaints. Several carbohydrates can be considered in this respect: (a) lactose: the main carbohydrate in the nutrition of early life and also in later life for many white people; (b) starch: the main energy supplier in our food; (c) fructose: a c...
متن کاملOn-line computer analysis and breath-by-breath graphical display of exercise function tests.
BEAVER, WILLIAM L., KARLMAN WASSERMAN, AND BRIAN J. WHIPP. On-line computer analysis and breath-by-breath graphical display of exercise fun&n tests. J. Appl. Physiol. 34(l): 128-132. 1973.The problem of making continuous calculations of respiratory variables over the duration of extended physiological studies is so difficult that observations of the breath-by-breath variations of derived quanti...
متن کاملBreath tests and airway gas exchange.
Measuring soluble gas in the exhaled breath is a non-invasive technique used to estimate levels of respiratory, solvent, and metabolic gases. The interpretation of these measurements is based on the assumption that the measured gases exchange in the alveoli. While the respiratory gases have a low blood-solubility and exchange in the alveoli, high blood-soluble gases exchange in the airways. The...
متن کاملThe future of 13C-breath tests.
13C-breath tests are widely applied as a tool to investigate metabolic processes and infectious diseases, but most of them have not yet entered into clinical practice. In order to promote the introduction of more 13C-breath tests into clinical routine application we evaluated the tests so far known with respect to some reasonable criteria, which are valued by one of three marks. The sum sigma o...
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ژورنال
عنوان ژورنال: Gut
سال: 1974
ISSN: 0017-5749
DOI: 10.1136/gut.15.4.308