General Principles for Selection of Donors Flashcards
PURPOSE OF DONOR SELECTION?
- ensures that the donor is protected against damage to his/her own health
- the recipient is protected against the transmission of disease, or the administration of blood products that could be detrimental to the recipient
Determine whether the potential donor is in good health.
DIRECTED DONATIONS
There is no evidence that directed donations lead to improved patient care nor that they reduce the risk of acquiring transfusion-transmitted infections.
There is the rare possibility of_______ if the
donor-close relative
recipient-immunocompromised
graft versus host disease
general principle:
collection of _____ is discouraged.
directed donations
-legal and ethical requirement -protects a person’s freedom of choice and respects the person’s autonomy.
-implies one’s willingness to donate blood
-given by a ________
-who has received the necessary information
-who has adequately understood the information -who, after considering the information, has arrived at a decision without having been subjected to coercion,
undue influence, or intimidation
INFORMED CONSENT FOR DONATION
mentally competent person
all personal information including the results of tests will be kept confidential
-If the donor consents, significantly abnormal findings during physical examination and blood testing will be communicated to the (2)
-the blood centers are using ______ and NOT confirmatory/definitive tests.
- there are false positive and false negative results.
- purpose of testing: ______
company physician or city/municipal health officer.
screening tests
blood safety not diagnosis
The donor should have an opportunity to ask questions and withdraw from giving blood without being exposed to undue embarrassment.
Age of Donor The age acceptance ranges are:
New donors between the ages of
Regular donors may be accepted up to
Lapsed donors over the age of
16 – 60 years (before 61st birthday)
70 years (before 71st birthday) subject to evaluation by a medical officer.
60 years are eligible to donate subject to evaluation by a medical officer.
Weight - Ideally?
more than 50 kg.
- if only 50 kg, assessment by an experienced medical officer.
Hazardous Occupations and Hobbies - at least ____ between donation and returning to the occupation or hobby.
- piloting an aircraft - bus or train driving - operating crane and similar heavy equipment - climbing of ladders or scaffolding or coconut tree - gliding - climbing - diving.
12 hours interval
Pregnancy Pregnant women should not be accepted
- deferral period is ___
- Women who breastfed deferred for a minimum of ___
12 months from date of delivery
three months post weaning.
___ - evaluated using the DHQ , interview on same day as blood donation
- donor accepted, by a qualified medical officer
- should have the final decision If the medical officer is in doubt the donor should be ____
____- provides more specific guidance concerning criteria for acceptance or deferral for a wide range of conditions including use of medicines.
Donor Medical History
deferred
The A-Z Guide to Assessment of Blood Donors
____ is of particular importance in maintaining the safety of blood and blood products used for transfusion.
_____ may indicate grounds for deferral or acceptance with qualifications.
history of infection or an exposure to risk of contracting infections
Medications taken by prospective donors
____ - provides more specific guidance concerning criteria for acceptance or deferral for a wide range of conditions including use of medicines.
Contains (3)
A-Z Guide to Assessment of Blood Donors
- Deferral list for conditions
- Medication deferral list
- Vaccination deferral list
- donor must complete and sign a copy of this everytime he/she attempts to donate.
medical interviewer signs the box to certify that the donor has read the _______ and that relevant questions have been asked.
-DHQ and donor declaration must be completed and signed by the donor on the ___
Donor History Questionnaire
Blood Safety Information Kit
same day
Donor Interview
-Donors must complete the DHQ
-Donor must also undergo an interview
- DHQ is reviewed by the medical officer
- performed in a manner that allays apprehension and allows time for discussion or explanation and for the donor to ask questions.
The donor interview must be undertaken in a private environment that allows ___
Privacy and confidentiality must be observed at all times.
audio privacy.
Blood Pressure and Pulse - pulse and blood pressure be tested in all donors
- Pulse:
- as a guide the systolic pressure should not exceed ____
and the diastolic pressure -
regular and between 60 and 100 beats/minute.
160 mmHg
100 mmHg
Hemoglobin Estimation The hemoglobin level should be determined using a validated procedure each time prior to donation
Femaledonors:
Male donors:
The maximum values before donation are:
Female donors:
Male donors:
125g/l
135g/l
175g/l
185g/l
Persons who require repeated transfusions (like patients with thalassemia) are encouraged to have a pool of ____
- discretion of a Transfusion Medicine Specialist
Dedicated donors (3)
dedicated donors
minimize antigen exposure and antibody reactions,
delay refractoriness,
and prolong efficacy of blood products.
APHERESIS DONOr
Apheresis is a procedure used to collect: (2)
Plasma (plasmapheresis) or
Cellular components (cytopheresis)
Cellular components (cytopheresis) include: 4
Red cells
•Platelets (plateletpheresis) •Granulocytes (granulocytopheresis) •Hemopoeitic progenitor cells derived from peripheral blood
