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#Low hematocrit and hemoglobin insufficient fluid manual#

Would this electrolyte concentration falsely decrease or increase the hematocrit value?.

Which electrolyte concentration could affect the hematocrit?.

Potassium = 3.6 mmol/L (Reference interval: 3.5 to 5.5 mmol/L) Sodium = 160 mmol/L (Reference interval: 135 to 145 mmol/L) The following results are obtained for a patient using a point-of-care device that employs the conductivity method to measure the hematocrit:

How would you describe the red blood cell volume and hemoglobin concentration based on these indices?.

What would you do to correct for the interferences you listed in question 2?įor another patient, the following results are obtained:.

What could cause the hemoglobin to be falsely elevated or the hematocrit to be falsely low?.

Using the rule of three, given the hemoglobin concentration above, what is the expected value for the hematoctrit?.

The following results are obtained for a patient with normocytic, normochromic red blood cells on a peripheral blood film:

Describe the principles of common instruments used for point-of-care testing for hemoglobin level, hematocrit, white blood cell counts, and platelet counts.Īfter studying the material in this chapter, the reader should be able to respond to the following case studies:.

Discuss the advantages and disadvantages of point-of-care testing as they apply to hematology tests.Describe the aspects of establishing a point-of-care testing program, including quality management and selection of instrumentation.Describe the procedure for performing the Westergren erythrocyte sedimentation rate and state its clinical utility.Given the appropriate data, calculate the relative, absolute, and corrected reticulocyte counts and the reticulocyte production index interpret results to determine the adequacy of the bone marrow erythropoietic response in an anemia.

#Low hematocrit and hemoglobin insufficient fluid manual#

Describe the principle and procedure for performing a manual reticulocyte count and the clinical value of the test.Calculate red blood cell indices (mean cell volume, mean cell hemoglobin, and mean cell hemoglobin concentration) when given appropriate data, and interpret the results relative to the volume and hemoglobin content and concentration in the red blood cells.Compare red blood cell count, hemoglobin, and hematocrit values using the rule of three.Identify sources of error in routine manual procedures discussed in this chapter and recognize written scenarios describing such errors.Describe the procedure for performing a microhematocrit.Calculate the values for a standard curve for cyanmethemoglobin determination when given the appropriate data, describe how the standard curve is constructed, and use the standard curve to determine hemoglobin values.Describe the principle of the cyanmethemoglobin assay for determination of hemoglobin.Correct white blood cell counts for the presence of nucleated red blood cells.Calculate hemacytometer cell counts when given numbers of cells, area counted, and dilution.Calculate dilutions for cell counts when given appropriate data.Describe the performance of manual cell counts for white blood cells, red blood cells, and platelets, including types of diluting fluids, typical dilutions, and typical areas counted in the hemacytometer.State the dimensions of the counting area of a Neubauer ruled hemacytometer.Modified Westergren Erythrocyte Sedimentation RateĪfter completion of this chapter, the reader will be able to: PART III Laboratory Evaluation of Blood CellsĬHAPTER 14 Manual, semiautomated, and point-of-care testing in hematologyĭisposable Blood Cell Count Dilution Systems Rodak's Hematology Clinical Principles and Applications