A manual of modern gastric methods : chemical, physical, and therapeutical / by A. Lockhart Gillespie ... ; with a chapter upon the mechanical methods used in young children / by John Thomson.

  • Gillespie, A. Lockhart (Alexander Lockhart)
Date:
1901
Catalogue details

Licence: Public Domain Mark

Credit: A manual of modern gastric methods : chemical, physical, and therapeutical / by A. Lockhart Gillespie ... ; with a chapter upon the mechanical methods used in young children / by John Thomson. Source: Wellcome Collection.

Provider: This material has been provided by the Augustus C. Long Health Sciences Library at Columbia University and Columbia University Libraries/Information Services, through the Medical Heritage Library. The original may be consulted at the the Augustus C. Long Health Sciences Library at Columbia University and Columbia University.

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    bodies. The third stage after such a meal—i.e., the stage in which the total acidity begins to fall again—■ may not be reached until the fourth or fifth hour. A mixed diet of carbohydrates and proteids leads to conditions midway between these two extremes. Periods of Healthy Gastric Digestion. 1. Fifteen to forty minutes,—total acidity rising ; lactic acid of ten present; free hydrochloric acid absent; hydrochloric acid combined with pro- teids the chief factor in acidity. 2. From fifteen or forty minutes to two or five hours,—after carbohydrates it usually begins early, and ends by the third hour. Acidity rising; lactic acid absent, or only in traces; free hydrochloric acid present; hydi'ochloric acid combined with proteids still in the larger proportion; some of the more fluid contents may be passed through the pylorus. 3. From two or five hours till emptying of stomach at the end of three to six or seven hours,—total acidity falling ; free hydrochloric acid present in greater proportion ; the combined acid in less; contents are being expelled through the pylorus more rapidly. Of course we must remember that the reaction of the food taken may alter the characters of the stomach contents during the first period of digestion, but the acids in food - stuffs are generally organic, and these are rapidly absorbed or altered in healthy digestion, and have little influence on