Final quiz 2
Dramatic hypotension sometimes accompanies type I hypersensitivity reactions, because
massive histamine release from mast cells leads to vasodilation
Which disorder is associated with a type III hypersensitivity mechanism of injury?
Systemic lupus erythematosus
A child with a history of recent strep throat infection develops glomerulonephritis. This is most likely a type _____ hypersensitivity reaction.
III
RhoGAM (an Rh antibody) would be appropriate in an Rh-_____ woman with an _____ Rh-_____ antibody titer carrying an Rh-_____ fetus.
negative; negative; positive
Which disorder is considered a primary immunodeficiency disease?
HIV/AIDS
Patients with immunodeficiency disorders are usually first identified because they
develop recurrent infections.
Severe combined immunodeficiency (SCID) syndrome is an example of a(n)
deficient immune response
Certain autoimmune diseases are associated with the presence of specific proteins on a person’s cells. These proteins are called ________ proteins.
HLA or MHC
The most common primary immune deficiency that affects only B cells is
selective IgA
Transfusion reactions involve RBC destruction caused by
recipient antibodies
The hypersensitivity reaction that does not involve antibody production is type
IV
The principle Ig mediator of type I hypersensitivity reactions is
IgE
Myasthenia gravis is a type II hypersensitivity disorder that involves
impaired muscle function
A primary effector cell of the type I hypersensitivity response is
mast cells
An important mediator of a type I hypersensitivity reaction is
histamine
The effects of histamine release include
increased vascular permeability
Autoimmune diseases result from (Select all that apply.)
overactive immune function.
failure of the immune system
to differentiate self and nonself molecules.
Secondary immune deficiency problems may be caused by (Select all that apply.)
surgery.
high blood sugar.
corticosteroids.
low protein level.
Anaphylaxis may occur in certain hypersensitivity reactions, including type (Select all that apply.)
I.
II.
Seasonal allergic rhinitis is most involved in type ____ hypersensitivity reactions
I
The major cause of death from leukemic disease is
Infection
A 58-year-old woman is seen in the clinic for reports of severe back pain. Her chest X-ray demonstrates generalized bone demineralization and compression fracture. Blood studies demonstrate elevated calcium levels. The most likely diagnosis is
myeloma
Renal insufficiency is a common complication of which disease?
Myeloma
The patient is a 12-year-old boy diagnosed with acute lymphoid leukemia (ALL). As part of treatment, the patient must undergo several weeks of chemotherapy. The most serious complication of chemotherapy is
infection
While in the hospital for management of acute lymphoid leukemia (ALL), a patient develops severe thrombocytopenia. The most appropriate action for this condition is
activity restriction
The Philadelphia chromosome is a balanced chromosome translocation that forms a new gene called
bcr-abl
Which form of leukemia demonstrates the presence of the Philadelphia chromosome?
CML (chronic myeloid leukemia)
In general, the best prognosis for long-term disease-free survival occurs with
ALL (acute lymphoid leukemia)
Which type of leukemia primarily affects children?
ALL (acute lymphoid leukemia)
Which group of clinical findings describes the typical presentation of ALL (acute lymphoid leukemia)?
Pain in long bones, infection, fever, bruising
What is the correct definition of complete remission (CR) of leukemia?
CR is less than 5% blasts in marrow and normal CBC values
Burkitt lymphoma is most closely associated with
Epstein-Barr virus.
Autologous stem cell transplantation is a procedure in which
stem cells are harvested from the patient and then returned to the same patient
A diagnostic laboratory finding in myeloma is
Bence Jones proteins in the urine
A 5-year-old patient’s parents report loss of appetite and fatigue in their child. The parents also state that the child refuses to walk due to pain. The child’s most likely diagnosis is
ALL (acute lymphoid leukemia)
The patient is a 12-year-old boy with acute lymphoblastic leukemia (ALL). Manifestations of the patient’s leukemia prior to treatment may include (Select all that apply.)
anemia.
leukocytosis.
thrombocytopenia
Which viruses have been implicated as cancer-causing agents? (Select all that apply.)
Epstein-Barr
Human T-cell leukemia
Human immunodeficiency
A patient is diagnosed with CML (chronic myeloid leukemia). The patient may experience which of these symptoms? (Select all that apply.)
Fatigue
Weight loss
Abdominal discomfort
Sweats
The only known curative treatment for CML is _____ bone marrow transplantation from a suitable donor.
allogeneic
Two of the most serious oncology emergencies associated with non-Hodgkin lymphoma are obstruction of the superior vena cava and compression of the _________.
spinal cord
A normal bleeding time in association with normal platelet count, and increased prothrombin time (PT) and INR, is indicative of
vitamin K deficiency
The final step in clot formation is
clot retraction
Dysfunction of which organ would lead to clotting factor deficiency
Liver
The conversion of plasminogen to plasmin results in
fibrinolysis
Activation of the extrinsic pathway of coagulation is initiated by
tissue thromboplastin
The prothrombin time (PT) and INR (International Normalized Ratio) measure the integrity of
extrinsic pathway
The activated partial thromboplastin time (aPTT) is a measure of the integrity of
the intrinsic pathway
A commonly ingested substance associated with prolongation of the bleeding time is
aspirin
The megakaryocyte is a precursor to
platelets
A cause of thrombocytopenia includes
chemotherapy
Widespread activation of the clotting cascade secondary to massive trauma is called
disseminated intravascular coagulation (DIC)
A 3-year-old boy who exhibits prolonged bleeding after minor trauma and a prolonged aPTT, but a normal platelet count, is likely to be diagnosed with
hemophilia
Treatment for hemophilia A includes
factor VIII replacement
Disseminated intravascular coagulation may be treated with heparin therapy to
inhibit clotting factor consumption
A deficiency of von Willebrand factor impairs
platelet adhesion to injured tissue
A patient presents to the physician’s office with pinpoint hemorrhages on the skin. The patient is most likely between the ages of _____ years
4 and 7
A patient is diagnosed with a tortuous blood vessel of the right hand that bleeds spontaneously. This patient presents with
telangiectasia
A newborn has melena, bleeding from the umbilicus, and hematuria. The newborn most likely experiencing
vitamin K deficiency bleeding
What is involved in the release of plasminogen activators? Select all that applies
Factor XII
HMWK
Kallikrein
Thrombin
The ________ is responsible for the synthesis of coagulation factors, with the exception of part of factor VIII
liver
Hemophilia B is also known as ________ disease
Christmas
A male patient involved in a motor vehicle accident is brought to the emergency department with acute flank pain. What additional signs of bleeding may the patient exhibit? (Select all that apply.)
Hematuria
Melena
Hematemesis
Hemoptysis
Which diseases may be associated with a bleeding problem? (Select all that apply.)
Renal failure
Cirrhosis
Systemic lupus erythematosus
Ovarian cancer