TY  - JOUR
T1  - THe quantity of blood required to produce a tarry stool
AU  - Daniel WA, Jr., Egan S
Y1  - 1939/12/16
N1  - 10.1001/jama.1939.72800500004009c
JO  - Journal of the American Medical Association
SP  - 2232
EP  - 2232
VL  - 113
IS  - 25
N2  - This experiment was undertaken under the direction of Dr. A. C. Ivy to ascertain the quantity of blood which, when taken by mouth, will produce a tarry stool.Ten healthy medical students were the subjects of the experiment. The procedure employed was essentially the drinking of venous blood drawn from the subject and subsequent gross examination for a tarry stool; that is, a stool which was black and glistening. No microscopic or chemical tests for blood were used, for the results of such an examination are not obtained in a patient's history. Progressively larger quantities of blood were taken by the subject until a tarry stool occurred. Sufficient time in each case was allowed for passage of the blood through the gastrointestinal tract before larger quantities were taken. Each subject was allowed to eat a general diet of his own choice; in addition, four of the students repeated the experiment
SN  - 0002-9955
M3  - doi: 10.1001/jama.1939.72800500004009c
UR  - http://dx.doi.org/10.1001/jama.1939.72800500004009c
ER  -