CLINICAL OQBERVATIONG ABD TRRATMENT tical of gramuinrrvtapenia was indicative of sane granulocyte regeneration. White counts were repeated at 3 to 4 day in- tervals om ail of the exponed individuals and more frequently on the with the lowest counts. Individuals with svmptonm or elevated tem- peratures were treated only after an attempt to eatablinh a diagnosin was made, even if a peried of observation was necewary. During the observation pertod, the patients were examined at frequent intervals and the temperatures checked every few hours, Twenty-seven individuals had total leukocyte counts of 4000 or below or absolute neutrophile counts of 2500 or less at some time during the period of observation. Of thesr 27, 15 de- veloped symptoms of disease that required evaluation for possible antibiotic therapy. The 13 instances in which it was necessary to consider the use of antibiotic therapy in neutropenic individuals are summarized below: Fight neutropenic individuals had symtoms of upper vespiratory infection (URI) char- acterized by malaise. sore throat, nasal dis- charge. and temperatures bet ween 1) and 114° F. The temperatures returned to normal within 24 hours. Since the response of this group to URE appeared identical with that of other individuals with URE without neutropenia. no special therapy was given. Two individuals developed) symptoms of marked talaise, headache. abdominal pain, nuisen and diarrhea. Doth were children, one nye 1, the other age 2. In both instances, the symptoms were out of proportion to the plysical findings, which were negative except for evidence of heed cotds and pharyngeal injection, The ¢-vear old child had an oral tempernture of 10.6" F. when first seen and 4 hours later, it was 14° FE.) The two-year ald child had an initial axillary temperature of 1O1.8° F. which rose to 1O4.5° Flin 4 hours. Both were given S00.000 nnits of procaine penicillin intra- musculariy when the sharp rise in temperature occurred, and both were day. Asecond mnjyection at this time, and therapy spite of the fuct that the afebrile the following of penicillin was given was discontinued. In neutrophiles remained - ;4 depresad in hoth cases long after the fever had pamed. both rndividuals recovered and had no further lines. In Figure 2.1 the leukocyte and platelet counts of the Z-vear old patie und the time of the orcurrenve of the febrile lines are illustrated. AU one-vear-okd boy had had symptoms of mild upper respiratory infection for several lays aud was brought to the clinic when be developed a hacking cough. When he was seen, his axillary temperature was 100.8° FL He had signs of URI, there was pharyngeal injeetion, and numerous coarse rhonchi were heard throughout the chest. A diagnosis of upper respiratory infection with associated bronchitis was made and the child was given a single intramuscular injection of 200000 units procame penicillin. On the following day his tem- perature was 8° F., no rales er rhonchi were heurd, and he recovered without further treatment. A 30-year-old man came to the clinic com- piaining of weaknem, nervousness, mild xb- dominal pain and shooting pam in the upper anterior chest bilateraliy of several hours duration, He appeared moderately dl, his temper- ature was 10.6° F.. and the only positive physical fituling Was moderate tenagerness in the eight upper quadrant of the abdomen. Within a 10-hour pertad the temperature rose to 101.6° F.. following which it fell gradually to normal. The abdominal tenderness continued for 24 hours and then gradually disappesred during the subsequent 2 davs. A tentative dingnosis of cholecystitis was made. No specttic therapy was given. in Figure 2.2 his white blood cell and platelet counts in relation to the uppearance of svmptoms are shown, A female, age 35, developed generalized urtt- earis, fever, and headache. No cause for the urficaria was found and the symptoms subsided within & hours without any Cherapy. AL individduaads in Groups Tand Ff that received antibiotics are listed in Table 2.1. Of the individuals treated with antibiotics, only the first three recerved itut atime when thetr teutrophile count was low, These casen are

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