. Clinical bacteriology and haematology for practitioners. Bacteriology; Hematology. THE BACTERIOLOGICAL EXAMINATION OF THE BLOOD I39 I and 2. Streptococci and Staphylococci.—These are found in cases of septicaemia, pyaemia, ulcerative endocarditis, etc.; they always indicate an extremely bad prognosis. The chief importance which attaches to the discovery of these organisms is that it absolutely settles the diagnosis (always provided that there are no errors in technique), and that it indicates whether the use of antistrepto- coccic serum is advisable or not; it is useless in cases of septi- c
. Clinical bacteriology and haematology for practitioners. Bacteriology; Hematology. THE BACTERIOLOGICAL EXAMINATION OF THE BLOOD I39 I and 2. Streptococci and Staphylococci.—These are found in cases of septicaemia, pyaemia, ulcerative endocarditis, etc.; they always indicate an extremely bad prognosis. The chief importance which attaches to the discovery of these organisms is that it absolutely settles the diagnosis (always provided that there are no errors in technique), and that it indicates whether the use of antistrepto- coccic serum is advisable or not; it is useless in cases of septi- caemia, etc., which are not due to streptococci. A word of warning is necessary in the interpretation of results which indicate that staphylococci are present in the blood. These. Fig. 32.—Spirillum of Relapsing Fever. organisms are constantly present in the skin, and may be found in film preparations or in cultures, unless rigid antiseptic precautions are taken. Streptococci may also occur as contaminations of cultures, but rarely occur in film specimens. 3. Anthrax Bacilli. — These may be detected with ease and certainty, but they are never found in the blood until it is too late to save the patient. 4. Tubercle Bacilli.—These are only present in very scanty numbers, and are very difficult to detect. The diagnosis of miliary tuberculosis is to be made by other methods, chiefly by that of exclusion^ 5. The pneumococcus is found in severe cases of pneumonia (probably it might be found in most cases if a sufficiently large quantity of blood were examined) and in septicaemia and ulcerative. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Emery, Walter d'Este. London, Lewis
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