MEDICAL TERMINOLOGY & SI UNITS

1. MEDICAL TERMINOLOGY & SI UNITS Asst. Prof. Pisit Namjuntra, MT Faculty of Medical Technology, Rangsit University

2. OBJECTIVES • Define stem words, prefixes, and suffixes from • a selected list. • Identify common abbreviations of medical laboratory • terms from a selected list. • Name common prefixes used to denote small and large SI units. • Convert between SI and conventional units.

3. References • http://www.free-ed.net/sweethaven/MedTech/ • MedTerm/default.asp 2. http://www.nlm.nih.gov/medlineplus/ medicalwords.html 3. http://www.medterms.com/script/main/hp.asp 4. Linne, JJ. Basic techniques in clinical laboratory science.

4. TERMINOLOGY A system of words used to name things in a particular discipline MEDICAL TERMINOLOGY A system of words used to name things in medicine

5. modifying word or syllable(s) placed at the beginning of a word prefix extra intravascular inside the vessel before birth prenatal post before birth antenatal exoparasite parasite, outside the body endoparasite parasite, inside the body

6. stem main part of a word, root word, a part of a word remaining after removing the prefix or suffix card = heart endocarditis erythro erythrocyte = red = cell leukocyte cyt (o)

7. modifying word or syllable (s) at the end of a word suffix itis inflammation pharyngitis ectomy cut out gastrectomy oma tumor hepatoma emia in the, or of the, blood bilirubinemia

8. selected prefix a, an absent, deficient anemia anuria olig few oliguria uni one unicellular bi two binocular di dimorphic tri three triplicate quad(r) four quadrant

9. hemi half hemisphere semi half semiconscious mal bad, abnormal malformation equi equal equilibrium iso isotonic isothermal aniso unequal anisocytosis

10. selected stem arter artery arteriogram vas vessel intravascular ven intravenous vein hematology hem(a) blood ur(o), uria urine hematuria *** Stems for various organs

11. selected suffix centesis puncture, aspiration amniocentesis emia in the blood bilirubinemia breaking down hemolysis lysis itis inflammation bronchitis oma tumor hepatoma osis increase leukocytosis condition

12. penia lack of leukopenia to make hemopoiesis poiesis rrhage excessive flow hemorrhage rrhea flow diarrhea scope, scopy view microscope stasis standing still hemostasis troph(y) nourishment hypertrophy

13. Abbreviations commonly used O.D. optical density sp. gr. specific gravity UA urinalysis, uric acid point-of-care testing POCT CBC complete blood count cu mm cubic millimeter, mm3 hemoglobin Hb

14. Hct hematocrit HAV Hepatitis A virus HBV Hepatitis B virus HCV Hepatitis C virus human immunodeficiency virus HIV HPF high-power field MTmedical technologist immediately stat

15. SI UNITS • International System of Units (SI) Le Système International d'Unités The SI base units

16. SI-derived units

17. Non-SI Units Retained for Use with the Sl Units

18. Commonly used prefixes in SI units

19. Conversion of units • Larger unit to smaller unit x 10+x • Smaller unit to larger unit x 10-x 1 L = … mL 1 x103 1 mL = …L 1 x10-3 • Remember prefix commonly used • Multiply and divide by desired unit

20. 0.1 dL =…. mL 10-1 = 0.1 dL x mL mL = 0.1 dL x mL mL 10-3 = 0.1 x 10-1mL 10-3 = 0.1 x 10-1-(-3)mL = 0.1 x 102 = 10mL

21. Deci 10-1 Centi 10-2 Milli 10-3 10(-1-(-3)) = 102 0.1 dL =0.1 x 102 mL = 10mL

22. 10 L = …. mL 10-6 = 10 L x mL mL = 10 L x mL mL 10-3 = 10 x 10 -6-(-3)mL = 10 x 10-3mL = 0.01 mL

23. mole =mass (g) MW (g) Molarity (M) = mole L Normality (N) = gram equivalent L N = Ma a = valence Example: H2SO4, a = 2 Ba(OH)2, a = 2 CaCl2, a = 2

24. 0.5 mmol/L = … mg/dL (MW = 100) = 0.5 mmol x mg x dL L mg dL 100 g 10-1 = 0.5 mmol x mg x dL L mgdL = 0.5 x 100 x 10-1mg dL = 5 mg dL

25. 0.1 M H2SO4 =……… N H2SO4 (MW = 98) 0.5 mM H2SO4 = ……… mg/dL (MW = 98) mg = 0.5 mmol dL L 10 -1 98 g x mg mg x dL dL = 0.5 x 98 x10-1mg dL = 4.9 mg/dL

26. Conversion Table -to convert from the conventional unit to the SI unit, multiply by the conversion factor; -to convert from the SI unit to the conventional unit, divide by the conversion factor.