Question 1

Examples of instrument malfunction flags include all of the following except

Accepted Answer

A) temperature error. 
B) probe not aspirating. 
C) no end point detected. 
D) hemolysis. 
A) temperature error. 
B) probe not aspirating. 
C) no end point detected. 
D) hemolysis. D

Question 2

Who should select the coagulation instruments for a given laboratory?

Accepted Answer

A) laboratory director 
B) department manager 
C) clinical laboratory scientists 
D) all of the previously listed individuals working together 
A) laboratory director 
B) department manager 
C) clinical laboratory scientists 
D) all of the previously listed individuals working together D

Question 3

Aspirin-induced bleeding and von Willebrand disease (VWD),type 1,are detected reliably by

Accepted Answer

A) platelet count. 
B) point-of-care testing (POCT). 
C) PFA 100 Platelet Function Analyzer. 
D) nephelometry. 
A) platelet count. 
B) point-of-care testing (POCT). 
C) PFA 100 Platelet Function Analyzer. 
D) nephelometry. C

Question 4

Which of the following is true regarding advances in automated coagulation instrumentation?

Accepted Answer

A) Less staff training is required to operate and maintain the equipment than was necessary for earlier semiautomatic instruments. 
B) Single-sample testing is possible because of increased precision. 
C) Newer instruments are less expensive. 
D) Accuracy is so improved that controls do not need to be run. 
A) Less staff training is required to operate and maintain the equipment than was necessary for earlier semiautomatic instruments. 
B) Single-sample testing is possible because of increased precision. 
C) Newer instruments are less expensive. 
D) Accuracy is so improved that controls do not need to be run.

Question 5

Which of the following most improved safety for laboratory scientists?

Accepted Answer

A) closed tube sampling 
B) random access 
C) expanded computer capabilities 
D) improved flagging capabilities 
A) closed tube sampling 
B) random access 
C) expanded computer capabilities 
D) improved flagging capabilities

Question 6

Which of the following is the most common clot detection principle used for coagulation testing?

Accepted Answer

A) photo-optical 
B) mechanical 
C) chromogenic 
D) immunologic 
A) photo-optical 
B) mechanical 
C) chromogenic 
D) immunologic

Question 7

Which of the following principles measures the actual coagulation protein rather than fibrin formation?

Accepted Answer

A) photo-optical 
B) mechanical 
C) chromogenic 
D) immunologic 
A) photo-optical 
B) mechanical 
C) chromogenic 
D) immunologic

Question 8

Diagnostica Stago coagulation instruments are based on what clot detection principle?

Accepted Answer

A) Photo-optical 
B) Mechanical 
C) Chromogenic 
D) Nephelometric 
A) Photo-optical 
B) Mechanical 
C) Chromogenic 
D) Nephelometric

Question 9

Using which principle does plasma become more opaque as a clot forms and the amount of light being detected decreases?

Accepted Answer

A) photo-optical 
B) mechanical 
C) chromogenic 
D) immunologic 
A) photo-optical 
B) mechanical 
C) chromogenic 
D) immunologic

Question 10

Which single instrument development has been the most important improvement in coagulation instrumentation?

Accepted Answer

A) multiple-sample dilutions 
B) improved flagging 
C) random access testing 
D) graphing of clot formation 
A) multiple-sample dilutions 
B) improved flagging 
C) random access testing 
D) graphing of clot formation

Question 11

What is the greatest disadvantage to photo-optical coagulation instruments?

Accepted Answer

A) high cost 
B) complexity of operation 
C) availability is limited 
D) interference from lipemia, hemolysis, and hyperbilirubinemia 
A) high cost 
B) complexity of operation 
C) availability is limited 
D) interference from lipemia, hemolysis, and hyperbilirubinemia

Question 12

Which of the following assays uses indirect measurement using a chromogenic substrate to quantitate heparin?

Accepted Answer

A) protein C 
B) thrombin time (TT) 
C) anti-Xa assay 
D) fibrinogen assay 
A) protein C 
B) thrombin time (TT) 
C) anti-Xa assay 
D) fibrinogen assay

Question 13

All of the following are considered routine coagulation tests that are available in most large and small clinical laboratories except

Accepted Answer

A) prothrombin time (PT). 
B) fibrinogen assay. 
C) partial thromboplastin time (PTT). 
D) antithrombin assay. 
A) prothrombin time (PT). 
B) fibrinogen assay. 
C) partial thromboplastin time (PTT). 
D) antithrombin assay.

Question 14

Automatic performance of certain tests based on the results of other tests is called

Accepted Answer

A) reflex testing 
B) interpretive liberty 
C) programming flexibility 
D) random access 
A) reflex testing 
B) interpretive liberty 
C) programming flexibility 
D) random access

Exam 44: Hemostasis and Coagulation Instrumentation

Examples of instrument malfunction flags include all of the following except

Who should select the coagulation instruments for a given laboratory?

Aspirin-induced bleeding and von Willebrand disease (VWD),type 1,are detected reliably by

Which of the following is true regarding advances in automated coagulation instrumentation?

Which of the following most improved safety for laboratory scientists?

Which of the following is the most common clot detection principle used for coagulation testing?

Which of the following principles measures the actual coagulation protein rather than fibrin formation?

Diagnostica Stago coagulation instruments are based on what clot detection principle?

Using which principle does plasma become more opaque as a clot forms and the amount of light being detected decreases?

Which single instrument development has been the most important improvement in coagulation instrumentation?

What is the greatest disadvantage to photo-optical coagulation instruments?

Which of the following assays uses indirect measurement using a chromogenic substrate to quantitate heparin?

All of the following are considered routine coagulation tests that are available in most large and small clinical laboratories except

Automatic performance of certain tests based on the results of other tests is called

An Overview of Clinical Laboratory Hematology

Safety in the Hematology Laboratory

Blood Specimen Collection

Care and Use of the Microscope

Quality Assurance in Hematology and Hemostasis Testing

Cellular Structure and Function

Hematopoiesis

Erythrocyte Production and Destruction

Erythrocyte Metabolism and Membrane Structure and Function

Hemoglobin Metabolism

Iron Kinetics and Laboratory Assessment

Leukocyte Development, Kinetics, and Functions

Platelet Production, Structure, and Function

Manual, Semiautomated and Point-of-Care Testing in Hematology

Automated Blood Cell Analysis

Examination of the Peripheral Blood Film and Correlation with the Complete Blood Count

Bone Marrow Examination

Body Fluid Analysis in the Hematology Laboratory

Anemias: Red Blood Cell Morphology and Approach to Diagnosis

Disorders of Iron Kinetics and Heme Metabolism

Anemias Caused by Defects of DNA Metabolism

Bone Marrow Failure

Introduction to Increased Destruction of Erythrocytes

Intrinsic Defects Leading to Increased Erythrocyte Destruction

Extrinsic Defects Leading to Increased Erythrocyte Destruction Nonimmune Causes

Extrinsic Defects Leading to Increased Erythrocyte Destruction Immune Causes

Hemoglobinopathies (Structural Defects in Hemoglobin)

Thalassemias

Nonmalignant Leukocyte Disorders

Cytogenetics

Molecular Diagnostics in Hematopathology

Flow Cytometric Analysis in Hematologic Disorders

Myeloproliferative Neoplasms

Myelodysplastic Syndromes

Acute Leukemias

Mature Lymphoid Neoplasms

Normal Hemostasis and Coagulation

Hemorrhagic Disorders and Laboratory Assessment

Thrombotic Disorders and Laboratory Assessment

Thrombocytopenia and Thrombocytosis

Qualitative Disorders of Platelets and Vasculature

Laboratory Evaluation of Hemostasis

Antithrombotic Therapies and their Laboratory Assessment

Pediatric and Geriatric Hematology and Hemostasis

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