S3 M7 Cellular Regulation Flashcards
(234 cards)
Hematopoieses
Rapid continuous turnover of blood cells
Leukemia
Hematopoietic malignancy of the a particular blood cell
can be granulocyte, lymphocyte, erythrocyte or megakaryocyte
Leukemia defects originate in
hematopoietic stem cells
the myeloid
lymphoid stem cells
myeloid
nonlymphoid blood cells
RBCs, platelets, mast cells, macrophages, WBCs
Types of leukocytes
eosinophils
basophils
monocytes
go out of whack with leukemia
Acute myeloid leukemia AML 101
occurs before 45y
Most common nonlymphocytic leukemia
Death chances increase with age
Death is usually from infection of bleeding
Manifestations of AML
Acute myeloid leukemia
Neutropenia - fever and infection
Anemia - fatigue dyspnea pallor
Thrombocytopenia - petechia, ecchymoses, bleeding tendencies
AML and manifestations inorgans
Pain in liver or spleen from enlargement
Bone pain from marrow expansion
Hyperplasia (enlargement) of gums
Hyperplasia of synovial space of joints
Diagnostics of AML
CBC - v in erythrocytes and platelets
v in Leukocytes
Bone marrow analysis - 20% increase in immature leukocytes aka Blast Cells Hallmark of diagnosis
AML treatment
Aggressive chemo - induction therapy (hospitalization for weeks)
results in low ANC
Packed RBCs and Platelets for ANC
G-CSF or GM-CSF - promote granulocyte and macrophage growth
Treatment for APL
All-trans retinoic acid - prevents blast cells from proliferating at an immature age
+ Arsenic trioxide
Anthracycline for those at risk of relapse
Absolute neutrophil count
precise calculation of the number of circulating neutrophils
DROPS in AML
Consolidation therapy
Done to reduce the chances of recurrence of leukemia
usually contains cytarabine
HSCT
Hematopoietic stem cell transplantation
+ Aggressive chemo
+ Radiation therapy
Goal is to DESTROY patient hematopoietic function
PT is then “rescued” by the infusion of normal HSCT
Most common bleeds in AML
GI
Pulmonary
Vag
Intracranial
DIC is common, more so with APL
As tumors die uric aid and phosphorus will increase. Monitor
Kidneys
Chronic Myeloid leukemia CML 101
Pain in Liver Spleen and Long bones - excessive leukocyte proliferation
SOB, confusion - due to too much leukocytes
3 stages of CML
Chronic
Transformation
Acceleration (blast crisis)
Chronic - low complications
Transformation and acceleration - increase in complications
Rx treatment for CML
Tyrosine kinase inhibitors
Imatinib
HSCT if not Rx progress
Transformation phase CML S/S
bone pain, fever, weight loss
Spleen will enlarge
Anemia/Thrombocytopenia
Acceleration (blast crisis) phase CML S/S
Same as AML
Induction therapy
Nursing management of CML
PCR to detect levels of BCR-ABL molecules
Major molecular response Benchmark for determining efficacy
Biggest issue with taking tyrosine therapy is ADHERENCE, STRESS importance of taking meds
Acute lymphocyte leukemia ALL 101
uncontrolled proliferation of immature B lymphocytes and T lymphocytes
Common in kids and those over 50y
S/S of ALL acute lymphocyte leukemia
v in granulocytes erythrocytes and platelets
^ in IMMATURE leukocytes
Highest rate of organ infiltration (liver spleen bones)
Attacks CNS - Cranial nerve palsies and Headache/V