For completing all those, a human must stay healthy. For being healthy, the human body needs healthy blood. Blood plays a vital role in the body.
Antibody to HIVusually subtypes 1 and 2 Serologic test for Syphilis The WHO reported in that 56 out of countries surveyed did not use these basic tests on all blood donations.
Additional testing is expensive, and in some cases the tests are not implemented because of the cost. For example, the HIV antibody test will not detect a recently infected donor, so some blood banks use a p24 antigen or HIV nucleic acid test in addition to the basic antibody test to detect infected donors during that period.
Cytomegalovirus is a special case in donor testing in that many donors will test positive for it. The two photographs on the left show a blood pressure cuff being used as a tourniquet.
There are two main methods of obtaining blood from a donor. The most frequent is to simply take the blood from a vein as whole blood. This blood is typically separated into parts, usually red blood cells and plasmasince most recipients need only a specific component for transfusions.
A typical donation is millilitres or approximately one U. This process is called apheresisand it is often done with a machine specifically designed for this purpose. This process is especially common for plasma and platelets. For direct transfusions a vein can be used but the blood may be taken from an artery instead.
This was an early method for blood transfusion and is rarely used in modern practice.
The donor may also be prompted to hold an object and squeeze it repeatedly to increase the blood flow through the vein. A mechanical tray agitates the bag to mix the blood with anticoagulants and prevent clotting. The amount of blood drawn varies from millilitres to millilitres depending on the country, but — millilitres is typical.
This combination keeps the blood from clotting and preserves it during storage. The plasma from whole blood can be used to make plasma for transfusions or it can also be processed into other medications using a process called fractionation.
This was a development of the dried plasma used to treat the wounded during World War II and variants on the process are still used to make a variety of other medications. ApheresisErythrocytapheresisPlasmapheresisand Plateletpheresis A relatively large needle is used for blood donations.
Apheresis is a blood donation method where the blood is passed through an apparatus that separates out one particular constituent and returns the remainder to the donor.
Usually the component returned is the red blood cells, the portion of the blood that takes the longest to replace. Using this method an individual can donate plasma or platelets much more frequently than they can safely donate whole blood.
Platelets can also be separated from whole blood, but they must be pooled from multiple donations. From three to ten units of whole blood are required for a therapeutic dose. Plasmapheresis is frequently used to collect source plasma that is used for manufacturing into medications much like the plasma from whole blood.
Plasma collected at the same time as plateletpheresis is sometimes called concurrent plasma.Write a report on Blood Donation Program Blood Donation Programme Held Sujon Ahmed,Sirajganj, 16 September: Recently a blood donation campaign was organized by Gafargaon Youth Club under the leadership of Shamim Ahmed, a local youth leader.
Blood donation is really important. Just imagine the number of lives that can be saved if more people donate blood. There are many instances when lives ould not be saved because the matching blood donor was not available, especially for O group people. Blood donation keeps the patient alive by providing a supplementary blood transfusion activity so that they can live a longer life instead of dying from blood loss.
In our society with respect for the donor, blood donation is important because it help to replace old blood products into new blood products. Short Essay on Importance of Blood Donation. Category: Essays, Paragraphs and Articles On April 29, By Omna Roy.
Importance of Blood Donation. Blood donation is one of the most significant contribution that a person can make towards the society. It is not harmful for an adult person to donate blood. The body of the donor can regenerate the. Oct 25, · This article is about social responsibility and blood donation, small and good act of giving a ray of hope, helping others by blood donating, precious help to others, organization across globe who act for blood donation, help a needy with the most.
Apr 23, · For the awareness of blood donation and its importance, the World Health Organization (WHO) established World Blood Donor Day.
This article will provide you information about World Blood Donor Day which can help you in writing an essay, short speech in /5(4).