No...you should not donate blood if you are tachycardic. Most blood banks will not allow you to donate blood if you heart rate is over 100. Some people with SVT can have a seizure if they donate blood. This is a question you need to have answered by your cardiologist.
No. Someone who has B blood can only donate to someone with AB blood and B blood. Someone with O blood can only take O blood.
It is important for people of all blood types to donate blood. Blood donation is an easy way to save another persns life. Some blood types are more rare than others. People with AB blood type should donate, because their is a shortage of blood available.
The global answer is no, you can't donate blood for at least 6 months, in some places you cant donate for up to a year post piercing.
Yes, you can donate blood while taking meloxicam. You cannot donate blood if you are taking antibiotics.
Yes, they also have the right to donate their blood.
can a diabetic donate blood
They can actually check your blood type when you donate, and they need all types, so there is really no reason to only donate because you have a certain type. However, your doctor can do a test to let you know what your type is.
Blood type AB can only donate to another AB type. Blood type O+ can be given to anyone, but a blood type like A or B or AB can only be donated to a person who has the same exact blood type as the person who is donating their blood.
You donate roughly 1 quart when you donate blood.Edit 3/18/2013 20:19: The answer above is false. You donate a pint of blood (0.5 quarts).
In theory, type O blood is the universal donor. It can donate to A, B, or AB. In reality, things are more complicated, and you can't really say what type of blood O can donate to, not without doing some lab tests on the specific blood (donor and recipient both).
People with AB+ blood can receive blood of any type. This is the reason why AB+ is called the universal recipient.