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FAQ
11: How long can blood be stored?
Whole blood can be stored up to 35 days, when kept in cpda anti coagulant solution and refrigerated at 2 - 4 deg c. but the demand is so great that blood hardly ever remains in storage for so long and is used much before expiry.


Fri, 13-December-2013
12: Can we separate blood into its components?
yes! now with technical advancements, we can make components of blood and store them. for example, plasma can be separated from whole blood and stored up to one year in frozen state at -80 deg c temperature or below. this is called fresh frozen plasma. similarly there are other components like platelet rich plasma; platelet concentrate (can be stored as a life saving measure upto 5 days now at 22- 24 degrees c in a platelet incubator and agitator); cryoprecipitate (which is very useful in treating bleeding disorders due to the deficiency of factor viii and ix); factor viii and ix; albumin, globulin and many others.
yes! now with technical advancements, we can make components of blood and store them. for example, plasma can be separated from whole blood and stored up to one year in frozen state at -80 deg c temperature or below. this is called fresh frozen plasma. similarly there are other components like platelet rich plasma; platelet concentrate (can be stored as a life saving measure upto 5 days now at 22- 24 degrees c in a platelet incubator and agitator); cryoprecipitate (which is very useful in treating bleeding disorders due to the deficiency of factor viii and ix); factor viii and ix; albumin, globulin and many others. in most progressive blood banks more than 85 % of the blood collected is converted into components and stored. this is because many patients do not require whole blood. for example, a patient whose haemoglobin is low and is therefore anemic, may just require packed cells i.e. only red cells; a patient with burns may need more of plasma than cells; a patient with hemophilia may require only factor viii. now with the advent of cell-separators we can directly draw a particular component from the donor, while rest of the blood constituents go back to the donor


Fri, 13-December-2013
13: In which situations do patients need blood transfusion?
There are many situations in which patients need blood to stay alive: • a patient needs blood after a major accident in which there is loss of blood. • no major surgery is performed without blood as there is bound to be blood loss. • on an average, for every open heart surgery about 6 units of blood is required. • in miscarriage or childbirth cases the patient may need large amount of blood to be transfused for saving her life and also the child's. • for patients with blood diseases like severe anaemias especially aplastic anaemias, leucaemias (blood cancer), haemophilia (bleeding disorder), thalassemia etc. repeated blood transfusions are the only solution. • in many other situations like poisoning, drug reactions, shock, burns, blood transfusion is the only way to save precious human life


Fri, 13-December-2013
14: What happens to patients in transfusions with incompatible blood (mismatched blood)?
the following symptoms may occur after only a few ml. of blood have been given: 1. patient complains of shivering, restlessness, nausea, and vomiting. there is precardial and lumbar pain. 2. cold, clammy skin with cyanosis. 3. pulse rate increases, respiratory rate increases. temperature increases to 38 to 40 deg c. [101 to 105 f]. 4. blood pressure falls and patient passes into a state of shock. 5. haemoglobinaemia, haemoglobinurea (urine turns red); oliguria (urine becomes scanty or the urinary output is reduced) and anuria (total output of urine becomes 200 ml. a day) 6. jaundice appears after a few hours and in some cases anuria persists and uremia develops. this may lead to death.


Fri, 13-December-2013
15: In which situations do people generally donate blood?
There are three types of blood donors: - (1) professional donors - they sell their blood, which is of very poor quality and can transmit very dangerous diseases to the recipient. it is illegal to take blood from any professional donor. (2) replacement donation - healthy relatives and friends of the patient give their blood, of any group, to the blood bank. in exchange, the required number of units in the required blood group is given. (3) voluntary donation- here a donor donates blood voluntarily. the blood can be used for any patient even without divulging the identity of the donor. this is the best type of blood donation where a motivated human being gives blood in an act of selfless service.


Fri, 13-December-2013
16: Who is a healthy donor?
any person within the age group of 18 - 55 years with a body weight as minimum 45 kgs, and having haemoglobin content as minimum 12.5 gm%.


Fri, 13-December-2013
17: Does a donor need to do anything special before donation?
The donor should eat at regular mealtimes and drink plenty of fluids.


Fri, 13-December-2013
18: How long does the donation take?
The procedure is done by skilled, specially trained technicians and takes three to eight minutes. however, from start to finish (filling form, post donation rest etc) the entire process should take upwards of 35 minutes.


Fri, 13-December-2013
19: Does the needle hurt the entire time?
There may be a little sting when the needle is inserted, but there should be no pain during the donation.


Fri, 13-December-2013
20: Does the donor suffer from any harmful effects after donating blood donation?
Absolutely not, rather a donor after having given blood voluntarily gets a feeling of great pleasure, peace and bliss. soon, within a period of 24 - 48 hours, the same amount of new blood gets formed in the body, which helps the donor in many ways. his own body resistance improves, the circulation improves, and he himself feels healthier than before


Fri, 13-December-2013
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