NSG 550 Exam 3 | Diagnostic Reasoning for
Nurse Practitioners | Questions and
Verified Answers | 100% Correct | Grade A
- Wilkes
What can a CBC diagnose?
Infection
Anemia
Leukemia
Blood Disorder
Platelet Disorder
Hemoglobin: What does this test measure
Total hemoglobin in the blood.
Rapid measure of direct RBC count.
Hemoglobin: What do increased levels indicate?
Hemochromatosis
Hemoglobin: What do decreased levels indicate?
Anemia
Haptoglobin: What does it detect? Intravascular destruction of RBCs
Hematocrit: What does it measure?
indirect measure of RBCs
What is the level of Hematocrit's relationship to Hemoglobin?
Hematocrit is usually 3x the hemoglobin value.
When in hematocrit often measured?
Pts with ongoing bleeding.
Activated partial thromboplastin time (aPTT): When/Why is it used?
To assess intrinsic system and the common pathway of clot formation.
To monitor heparin therapy
Antithrombin activity and antigen assay: Why is it used?
Used to evaluate pts suspected of having hypercoagulable states.
Helps identify the cause of heparin resistance in pts.
Detects how much antithrombin protein your body has made.
Antithrombin activity and antigen assay: What does it identify when ordered together?
Identify Type 1 or Type 2 antithrombin deficiency What is ordered for unexplained blood clots?
Antithrombin activity and antigen assay
Direct Coombs Test: Why is this test performed?
To identify immune hemolysis or to investigate hemolytic transfusions reactions.
Indirect Coombs test: What is it used for?
To detect antibodies against RBCs in the serum.
Indirect Coombs test: What is it most commonly used for?
screening potential blood recipients.
D-Dimer: What is it used for?
To identify intravascular clotting
Erythropoietin: EPO: What it is used for?
To assist in differentiating the cause of anemia and polycythemia.
Factor-V-Leiden: What it is used for?
To diagnose V-Leiden thrombophilia Internationalized Normal Ration: (INR): What is it used for?
Used to measure how quickly blood forms a clot compared with normal clotting time.
Platelet count: What it is used for?
Counting number of platelets per cubic millimeters of blood.
Platelet count: When to perform?
For patients that develop :
Petechiae, Spontaneous bleeding,
Increasing heavy menses,
Thrombocytopenia
Prothrombin Time: (PT): What does it do?
Evaluates the adequacy of the extrinsic system and common pathway in the clotting mechanism.
Bence Jones Protein: What is it?
A special protein found in the blood and urine.
Indicative of Multiple Myeloma
Antibiotic use and wound culture interpretation: When is it indicated?
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