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648            PART 8  ■  Fundamentals of Hematological Analysis







                             CASE STUDIES (continued)
                               CASE STUDIES (continued)





                  ■   Laboratory Data
                                                                                                                                                 VOL

                     Leukocyte Differential                                                               %



                     Band neutrophils                                                                      10


                     Polymorphonuclear segmented neutrophils (PMNs)                                        80


                     Lymphocytes                                                                             7

                     Monocytes                                                                               1


                     Eosinophils                                                                             1


                     Basophils                                                                               1
                                                                                                                                                                                                 ABS
                     Total                                                                               100
                                                                                                                                   RBC                                        PLI
                     RBC morphology: 3+ microcytosis, 3+ hypochromia, 1+ anisocytosis.



                  ■   Absolute Cell Counts


                     Neutrophils                   10 /µL              20.7                  2.0–8.0
                                                      3
                                                                                                                                                    WBC/
                     Lymphocytes                   10 /µL              1.6                   1.0–5.0                                                BASO
                                                      3


                  ■   Critical Thinking Group Discussion Questions
                  1.  Are any o  the laboratory values abnormal?




                  2.  Why are the absolute cell counts important data?





                  3.  Should additional laboratory assays be ordered?



























                                                                                                                                   (Reprinted  rom McClatchey KD. Clinical Laboratory

                                                                                                                                   Medicine,  2nd  ed,  Philadelphia,  PA:  Lippincott

                                                                                                                                   Williams & Wilkins, 2002, with permission.)



                                                                                                                           CBC was ordered.



                         (Reprinted   rom  Anderson  SC.  Anderson’s  Atlas                                                    Measurement                       Units                     Reference Range*

                         o  Hematology, Philadelphia, PA: Wolters Kluwer                                                                                                   6

                         Health/Lippincott Williams & Wilkins, 2003, with                                                      RBC                               4.0 × 10 /µL              4.00–6.20

                         permission.)                                                                                          Hgb                               11 g/dL                   11.0–18.8

                                                                                                                               Hct                               34%                       35.0–55.0


                                                                                                                                                                           3
                     Case Study 30.11                                                                                          WBC                               9.0 × 10 /µL              6.0–11.0
                                                                                                                               PLT                               20.0 × 10 /µL             150.0–400.0
                                                                                                                                                                             3
                  ■   History and Physical                                                                                     MCV                               85 fL                     80.0–100.0
                  A.C. is a 27-year-old white male. On New Year’s day, he dis-

                  covered swollen lymph nodes in his arm pits. He had been                                                     MCH                               28 pg                     26.0–34.0

                  becoming progressively tired and weak over the last several                                                  MCHC                              33g/dL                    31.0–35.0

                  weeks but thought that he had the f u.                                                                       RDW                               15%                       10.0–20.0

                  He went to the emergency department where a stat CBC                                                         MPV                               9.0 fL                    6.0–10.0

                  was ordered.
                                                                                                                               fL, femtoliters; pg, pictogram.

                                                                                                                               *Published for Beckman Coulter A T .
                                                                                                                                                                           C TM
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