How to Donate Blood With Low Blood Pressure

Low blood pressure, or hypotension, is the term generally given to a blood pressure reading where the systolic (top number) is 90 mm Hg or the diastolic (bottom number) is 60 mm Hg or less. For most people, low blood pressure is not a big concern. But for some it can bring on fainting spells, bouts of dizziness and nausea. When blood pressure drops severely, it can deprive the brain and the body's other organs with oxygen and lead to life-threatening shock. On the other hand, many people who have low blood pressure do not suffer any symptoms and are often in a better state of health than those who have high blood pressure. Whether you're symptom free or not, donating blood when you have low blood pressure does require more thought.

Instructions

• 1

  Make sure you are healthy on donation day. Even for those with normal blood pressure readings, donating a pint of blood can make a person more susceptible to bruising, fainting and nausea. Plus, it may be harder for a person with low blood pressure to adjust to the sudden loss of blood volume since his or her circulatory system is already working at a slower pace. This could result in a higher risk of dizziness or other unwell feelings stemming from the blood not supplying the body's organs with the oxygen they need.

• 2

  Drink lots of water. It's important to remain hydrated prior to, during, and after donation day. Staying hydrated can also help raise your blood pressure if it's too low.

• 3

  Eat more salt. Increasing the amount of sodium in your diet prior to and during donation day can also work to raise your blood pressure.

• 4

  Increase your iron. A sample of your blood will be checked prior to donation for adequate iron levels. If deemed too low, you will be asked to come back at a later date. To make sure you have enough iron in your blood, add iron-rich foods to your diet a week or two prior to the donation date. Oatmeal, dark green leafy vegetables such as kale, collards, spinach, and broccoli, beef, pork, lamb, poultry, fish, and eggs are all good sources of iron, as is an iron-enriched multiple vitamin.

• 5

  Eat after your donation. If you've been allowed to give blood, you need to replenish your fluid volume and raise your blood sugar. Most blood drive centers will supply you with a snack and juice after the donation process.

• 6

  Rest for a short period before resuming your normal activities. Let your body get used to the reduced blood volume, especially if you're planning on driving a vehicle.