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My blood pressure is about 78/52 and the nurse said that I cannot donate blood because they would have to take me to the hospital and put it back in. Is that correct and if it is, does it mean that if I was injured and losing blood I would die more quickly than someone with normal bp? Blood pressure is partly determined by your blood volume. If you suddenly remove a pint of blood without replacing the volume, it is normal for BP to go down (less blood in the same space = lower pressure) Your BP is low, but that is probably normal for you, and is just fine. Taking a pint out, though, would likely drop your BP to the point where you won’t adequately perfuse your vital organs. This can cause fainting, heart problems, kidney damage and other bad things. If you were injured and had a major blood loss, you might see adverse effects more quickly. However, if you are young and otherwise healthy, your sympathetic nervous system would kick in big time and the adrenaline would probably keep your BP high enough to keep you going. People who have high blood pressure are at risk if they lose a lot of blood because of something called autoregulation. Their organs are used to the higher pressures, and they are unable to tolerate pressures that would be normal for you.  I had a blood transfusion last September when I was in a car accident, and I know I have to wait a year to donate blood. But why do you have to wait a year? What happens in a year that makes it ok to give blood again? lol. Its just in case the blood you were transfused with was carrying a disease. The idea is that in one year, either symptoms would have shown up, or a blood test will show the presence of the disease. Blood tests can’t show diseases immediately. Lets say a person contracts AIDS today. It won’t show in a test right away. That sounds kinda scary, but the fact is that donors and blood are screened so thouroughly that the chance of contracting a disease from a US blood transfusion are almost zero. The fact that we even defer people who have received blood from a US blood bank from donating back into that same blood bank is just more evidence that we take no chances. So enjoy your year off, and then get back in the chair! I live in India,my age is 14.Can I donate blood if I want.my blood group is O-.I can save many lives because it is a rare blood group.Is there any law about donating blood? I thank all in advance. I have no idea about India, but in the United States you have to be 17, at least 110 pounds, and in good health. Try asking the Indian Red Cross Such as what the best temperature, condition, container,..to keep it save & unaffected. i always ask these kind of questions when i am giving blood and if i remember correctly it only last for like 4 days – they keep it in vinyl bags in a fridge until its needed. – i could be totally wrong. This a site of my friends in the band Grace in Gravity . I wish their music will become world famous coz these guys deserve their fame. All the members are avid supporters or blood donation and have worked with us in our campaigns. |
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