Blood Disorders (CHP 22 + 23 + 24) Flashcards
Describe the pathophysiology and manifestations of disorders of erythrocytes, including anemias (all types), and polycythemia. Describe the pathophysiology and manifestations of non-neoplastic and neoplastic disorders of leukocytes. Differentiate between types of cancer affecting the blood and lymphoid tissue (Hodgkin vs Non-Hodgkin Lymphoma; Multiple Myeloma). Describe the pathophysiology and manifestations of platelet disorders. Differentiate various bleeding disorders (Thrombocytopenia [ITP,
hemoglobin
protein on RBC that holds O2
process for developing RBCs
erythropoiesis
hematocrit
% of RBC in the blood
what is the primary function of RBCs?
carry or transport O2 to tissues
what are the 4 parts needed to make an RBC?
protein
iron (heme)
folic acid
vit B12
what is the lifespan of RBCs
120 days
where are RBCs stored?
liver
where are RBCs broken down?
spleen
where are RBCs produced?
red bone marrow
__________: an abnormally low # of circulating RBCs or level of Hbg, or both = diminished O2-carrying capacity
anemia
what are the 4 causes of anemia?
- excessive loss of RBCs from bleeding
- destruction of RBCs (rxn to blood transfusion)
- defective RBC production
- inadequate RBC production due to bone marrow failure
normocytic
normal and concave
microcytic
too small
macrocytic
too big
leukopenia
deduction of WBCs
effects of anemia is dependent on __________, _____ (ulcers vs MVA), _____
severity
rate
onset
overall main effect of anemia:
impaired oxygen transport and compensatory mechanisms
why is jaundice a sign of anemia?
bilirubin is a byproduct of RBC destruction
common signs and symptoms of anemia
jaundice (sclera)
pallor skin (cyanotic, distal, babies = lips)
pallor of mucous membrane (ears, eyes, nose, mouth)
lack of circulation manifestations (tachycardia, palpitations, angina)
confusion or headaches (hypoxic brain)
pain and cloticaton (bone pain due to overdrive production of RBCs)
SOB
what are the 6 types of anemia?
blood loss
hemolytic
iron deficient
megaloblastic
aplastic
chronic disease
________ _____ anemia can result from acute (surgery/________) or chronic (___ bleed)
blood loss
trauma
GI
blood loss anemia is caused by …
internal or external hemorrhage
hemolytic anemia is caused by … (2)
premature destruction of red cells in vascular compartments or outside AND/OR retention of iron or other products of Hgb destruction
autoimmune disorders are an example of __________ hemolytic anemia
intrinsic
chemo and radiation disorders are an example of __________ hemolytic anemia
extrinsic
sickle cell disease is an example of _________ anemia
hemolytic
with sickle cell disease, CBC values are _______ and we need to look at the blood ________
normal
smear
with hemolytic there is an increase in ___________
erythropoiesis
what causes iron deficiency anemia?
dietary deficiency
loss of iron via bleeding
increased demands
iron deficiency anemia leads to _________ hemoglobin _________ and consequent impaired _______ delivery
decreased
synthesis
oxygen
what causes megaloblastic anemia?
impaired DNA synthesis that results in enlarged RBCs
what are the 2 most common conditions associated with this anemia?
vitamin B12 deficiencies
folic acid deficiencies
megaloblastic anemias have abnormally shaped and large, which means that they cannot do the normal ________ of RBCs
function
with aplastic anemia, there is a reduction of …
RBCs
WBCs
platelets
thrombocytopenia
reduction of platelets
what causes aplastic anemia
exposure to high doses of radiation, chemicals, and toxins that suppress hematopoiesis
aplastic anemia is caused by _______ factors
extrinsic
with aplastic anemia, there is a _______ onset of fatigue and bleeding gums
gradual
what causes chronic disease anemias
chronic infections, inflammation, cancer and chronic renal failure
what kind of anemia is common in the ICU?
chronic disease anemia
the ________ are the primary site of erythropoietin synthesis which stimulates __________ and increases _____ production: which is why chronic renal disease can cause anemia
kidneys
erythropoiesis
RBC
sickle cell anemia cells are pointess because …
they can’t carry O2 and they clog movements because of abnormal shape
what is polycythemia?
abnormally hihg total red blood cell mass with a hematocrit greater than 54% in males and 47% in females
what is absolute polycythemia?
rise in hematocrit due to a rise in RBC mass
S/S of polycythemia
cardiac dysfunction and vascular obstrution, hypoxia
with relative polycythemia, hematocrit increases because of …
loss of plasma
causes of relative polycythemia
GI loss
lots of diuretics
dehydration
what is primary absolute polycythemia?
absolute increase in total RBC mass and elevated WBC, platelet
primary absolute polycythemia can also be called
polycythemia vera
primary absolute polycythemia can interfere with cardiac ______, impeding blood _____ and ____ BP
output
flow
high
secondary absolute polycythemia there is an increase __________ (only _____)
RBCs
erythropoietin
people run marathons at high elevation to increase their capacity for ____
O2
Non-Neoplastic Disorders of White Blood Cells (2)
neutropenia
infectious mononucleosis
Neoplastic Disorders
Non-Hodgkin lymphomas*
Hodgkin lymphoma*
Lymphoid leukemia
Plasma cell dyscrasias
people with neutropenia are at tisk for ________
infection because of ANC
neutropenia can be ________ or ________
congenital or acquired
what is mono caused by
epstein-barr virus
mono is usually ________ (quick)
insidious
manifestations of mono (4)
malaise
anorexia
chills
enlarged lymph nodes
what are 2 complications of mono
splenomegaly
hepatitis
people with neoplastic disorder are at risk for bleeding because ….
platelets and RBCs are overcrowded (no clotting and anemia)
what is the origin of non-hodgkin lymphoma?
B-cell, T-cell, NK cell
alterations in the developmental process of these cells can lead to
any of the subtypes of lymphoid neoplasm
lymphocytes
what are the 4 characterizations of non-Hodgkin lymphoma?
cellular morphology (main)
immunophenotype
clinical symptoms
level of aggression
non-hodgkin lymphomas are _____ growing and have __________ lymph nodes and they don’t hurt
slow
enlarged
non-hodgkin lymphoma affects which body parts? (3)
spleen
liver
bone marrow
Specialized form of lymphoma that features the presence of an abnormal cell called a Reed-Sternberg cell, with ….
hodgkin lymphoma
hodgkin lymphoma arises in a single _____ or chain of nodes and and then spread systemically
node
clinical manifestations of hodgkin lymphoma (6)
- painless enlargement of nodes (above the diaphragm)
- chest discomfort with cough
- fevers
- chills
- night sweats
- pruritus
spread of hodgkin lymphoma to … (5)
liver
spleen
lungs
digestive tract
CNS
destruction of bone from the inside out
multiple myeloma
increase in IgG in the cytoplasm around the nucleus in _______ ______
multiple myeloma
what are the 4 major categories of neoplastic disorders?
non-Hodgkin lymphomas
Hodgkin lymphoma
lymphoid leukemia
plasma cell dyscrasias
risk factors of multiple myeloma (4)
- chronic immune stimulation
- autoimmune disorders
- ionizing radiation exposure
- exposure to pesticides/herbicides
treatment for multiple myeloma?
stem cell transplant
high dose chemo
manifestations of multiple myeloma (9)
bone pain
hypercalcemia
fractures
thrombocytopenia
renal failure
increase in fluid viscosity
infections
anemia
neutropenia
_________ are malignant neoplasms of cells originally derived from hematopoietic precursor cells
leukemias
leukemia is characterized by …
replacement of bone marrow with unregulated, proliferating, immature neoplastic cells (chromosomal changes)
how is leukemia classified?
cell type (lymphocytic or myelocytic)
acute (ALL, AML)
chronic (CLL, CML)
what is the most common type of childhood cancer?
acute lymphoblastic leukemia (ALL)
what is the patho of ALL?
rapid production of immature lymphocytes (B lymphocytes usually)
______ _______ leukemia is when there are so many blasts (immature cells) that is crowds out normal WBCs
acute lymphoblastic
manifestations of ALL?
*tired, weak, pale, bruising, splenomegaly and hepatomegaly
*fever, night sweats, large
lymph nodes (large WBCs but no infection to treat)
______ _________ is more common in adults
chronic lymphocytic
what is the patho of CLL
gradual production of malignant B lymphocytes
LYMPHOCITIC: attacks the __________ immune system
adaptive
manifestations of CLL (5)
fever, anemia, increase risk of infection, splenomegaly, or hepatomegaly
MYELOGENOUS: attacks the __________ immune system
innate
what is the patho of AML?
*affects cells of myeloid line (originates in bone marrow)
*rapid production of immature cells
AML and ALL have the same clinical manifestations, so they have to look at …
blood smears and shapes
_____ affects elderly more often
CML
what is the diagnostic marker of CML
Philadelphia chromosome (translocation of 9 and 22)
what is the patho of CML?
affects cells of myeloid line (OG in BM)
manifestations of leukemia: (8)
- bone marrow depression
- malaise
- fever
- bleeding
- bone pain
- anemia (A)
- vulnerable to infections (low neutropenia) (N)
- thrombocytopenia (T)
excessive everything in the blood, NON malignant
polycythemia vera
what causes polycythemia vera
increase response to growth factors
manifestations of polycythemia vera (
headaches
hypervolemic state
BV distention
spleno/hepatomegaly
Bleeding Associated with Platelet
Disorders
Can be due to decrease in
platelet numbers d/t
production decrease,
increased destruction, or
impaired function
Common sites of bleeding are (w platelet disorders)
mucous membranes (nose, mouth, GI tract, uterine cavity); can also see
petechiae* or purpura*
___________ caused by decreased platelet production (less than 150,000), increased sequesterian of decreased platelet survival
thrombocytopenia
what are the 3 types of thrombocytopenia?
- immune thrombocytopenic purpura (ITP)
- thrombotic thrombocytopenia purpura (TTP)
- drug-induced thrombocytopenia
_____ Results in platelet antibody formation and excess destruction of platelets, also referred to as idiopathic
ITP
what causes secondary ITP?
autoimmune disorders and chronic infections (H pylori, hep C, HIV)
*infections help immune systems attack platelets
what causes primary ITP
autoimmune diseases (immune function destroys platelets)
newly diagnosed ITP: time?
diagnosis to 3 months
persistent ITP: time?
3 to 12 months
chronic ITP: time?
1 year and more
incidence highest in __________ 30 - 59 and older persons older than 60
females
patho of ITP
D/t antiplatelet antibodies in the platelet membrane (platelets are more susceptible to phagocytosis d/t this antibody) destroyed
in the spleen
manifestations of ITP
Bruising, bleeding from gums, epistaxis, melena, abnormal menstrual bleeding, splenic enlargement
TTP is the combination of (5)
Combination of thrombocytopenia, hemolytic anemia, renal failure, fever, and neurologic
abnormalities
what is the onset for Thrombotic Thrombocytopenic Purpura (TTP)
abrupt (rare overall)
______: Likely results from introduction of platelet-aggregating substances into the circulation
TTP
lack of enzyme
patho of TTP
Plt aggregation results in microvascular occlusions, leading to end-organ failure
manifestations of TTP (4)
Purpura, petechiae, vaginal bleeding, neurologic symptoms (ranging from headaches-seizures-
altered consciousness)
TTP is 99% _______
acquired (blood transfusions, IV meds)
what kinds of drugs can induce thrombocytopenia
aspirin, atorvastatin, some antibiotics
drug- induced thrombocytopenia: Induce an antigen-antibody response and formation of
____________ _______ that cause plt destruction by lysis
immune complexes
Will see a rapid fall in the plt count within 2-3 days of _______ a drug or 7+ days after starting a drug for the ____ ____; plt count will rapidly increase after the drug is discontinued
resuming
first time
Characterized by widespread
coagulation and bleeding in the
vascular compartment
Disseminated intravascular coagulation (DIC)
what is caused by DIC caused by?
treatment (AND treatment has many complications)
conditions associated with DIC (6)
obstetric
cancers
infections
shock
trauma/surgery
blood transfusion rxns
manifestations of DIC (
blood
*bleeding
*brusiing
*hematuria
* hypovolemic
clot
*tissue necrosis
*acrocyanosis
* confusion