Stem Cell Transplantation Flashcards
Blood stem cells are produced in the _________ and can become any kind of blood cell the body needs
bone marrow
Stem cells are constantly dividing and maturing into different types of _________, replacing older and worn ones in the body
blood cells
They produce billions of new blood cells _______
If the stem cells cannot make enough new blood cells, many serious health problems can occur
every day
______ are immature blood cells that are removed from the blood or bone marrow of the patient or a donor, then ______ and stored
stem cells
frozen
High doses of chemotherapy and/or radiation therapy are needed to __________ that is producing the cancerous cells, followed by the transplant.
The infused stem cells replace the blood
destroyed by the cancer treatment by growing into and restoring the body’s blood cells
kill existing bone marrow
Currently, 85% of transplants performed at UPMC Cancer Center use stem cells from _______ blood
peripheral
SCT has the potential to cure a variety of benign & hematologic diseases that may be incurable with conventional therapy. This will ______, not necessarily cure
add years of life
common diseases treated with SCT
leukemia
lymphoma
myelodysplastic syndrome
multiple myeloma
aplastic anemia
SCT allows high doses of chemotherapy and/or radiation therapy to be used on these diseases
________ becomes depressed due to the higher doses used and the transplanted stem cells will eventually restore normal blood cell production
Bone marrow
_____ is from self
Stem cells are harvested from the patient prior to other __________, purged of ________ cells, and transplanted into the patient
Auto SCT is commonly used for lymphomas, myeloma and testicular cancer, less commonly used for _______
Predominant type of transplant used in _______
Autologous
cancer treatments
abnormal
leukemia
older adults
_______ is from another person
Physicians collect and transplant stem cells from a donor who matches the recipients’ cells
either from __________ or __________
Allogenic
Sibling (SIB)
Matched unrelated donor (MUD)
Identicle twin is ________
syngenic
Umbilical Cord Blood Transplants
Stem cells are harvested from umbilical cord blood and transplanted
research has shown that umbilical transplants are_________ as transplants from unrelated donors
just as effective
_____________
Half-matched bone marrow transplant that has been successful in “curing” patients of some cancers and blood disorders
Physicians administer just enough chemotherapy to suppress the immune system, which keeps patients from rejecting the donated marrow without harming their organs
Milder side effects
Expands the potential donor pool, making more patients eligible for the transplant
Haploidentical Transplantation
in the Haploidentical Transplantation physicians administer ____________ to suppress the immune system, which keeps patients from ___________ without harming their organs
______ side effects
Expands the potential donor pool, making more patients eligible for the transplant
just enough chemotherapy
rejecting the donated marrow
Milder
SCT consists of three major parts:
Conditioning phase
Infusion of SCT
Engraftment
Conditioning phase is Designed to ______________ without causing fatal organ toxicity
The choice of conditioning regimen varies based on patient and disease characteristics as well as donor availability
After conditioning is complete, patient receives the stem cell infusion
destroy tumor cells resistant to conventional doses of chemo
Stem cell infusion
cells are infused through patients’ _______ over several _______
Patients are closely monitored for fever, chills, hives, lowblood pressure & shortness of breath
central line
hours
________ is when donated stem cells take hold & begin producing normal blood cells
Defined at UPMC SHY, WBC are considered in this stage when the ANC is ______ for ____ consecutive days or ______ on one day
defined as an unsupported count greater than _______
engraftment
> 500
two
1000 cells
20,000
Advantages of Autologous
No HLA matching requirement
No GVHD
No need for immune suppression
Advantages of Allogenic
Stem cells have not been exposed to chemotherapy
Stem cells product is free of tumor
Disadvantages of autologous
Possibility of stem cell damage from prior therapy leading to delay in engraftment
Possibility of contamination with tumor
Disadvantages of allogenic
Donor availability uncertain
GVHD
Higher risk of complications
Autologous has _____ Risk of complications, ______ risk of relapse
lower
Higher
Allogenic has _____ Risk of complications, ______ risk of relapse
higher
lower
Outcome of SCT depends on many patient factors such as
age
disease factors
donor factors
transplantation factors
problems impacting intake
appetite
GI symptoms
mucositis, stomatitis, xerostomia
taste alterations
After transplantation, patients should receive a __________ comprised of food that contains low numbers of potentially harmful microbes
low microbial diet
low microbial diet include…
- Avoid raw honey
– Do not keep leftovers for >3 days
– Do not share food and drinks with other people
– Make sure all dairy products are pasteurized
UBW/pre-illness weight
IBW
adjusted weight for IBW >______
weight loss history
_________ patients prognosis is less favorable
120%
Underweight