74 



BACTERIOLOGICAL EXAMINATION 



jar by pouring or by a pair of forceps sterilized by 

 passing through the flame. The cleansing of the 

 receptacle should be done by soap and water, alcohol, 

 and sterile water. 



Collection of Blood for Widal Test. In preparing for 

 a Widal blood test (see Typhoid Fever) the finger or 

 ear lobe is cleansed with soap and water and alcohol. 

 It is then pricked with a needle and the blood collected 

 on unglazed paper, glass slides, or in glass tubes. For 

 direct examination of the blood, the procedure with 

 the patient is the same. 



FIG. 23 



Forms of hypodermic syringe: A, Koch's syringe; B, syringe of Strohschein; 

 C, Overlack's form. 



Technique of Punctures. Perhaps the most important 

 bacteriological technique with which the nurse has an 

 important duty is the puncturing of cavities such as 

 drawing fluid from a chest or knee, the cerebrospinal 

 fluid from the spinal canal, or the taking of blood from 

 a vein. For all these the skin over the site of operation 

 is cleansed precisely as for a major operation. It is 



