In addition, nearly one-third of people who have a DVT will have long-term complications caused by the damage the clot does to the valves in the vein called post-thrombotic syndrome (PTS). People with PTS have symptoms such as swelling, pain, discoloration, and in severe cases, scaling or ulcers in the affected part of the body.
Peak flow demonstrates how quickly you can blow air out of your lungs. The peak flow meter is marked so you can determine how much air you can blow out. The better your asthma is controlled, the more air you will be able to blow out.
For this reason, it is important to determine what peak flow value is normal for you. To determine your normal peak flow measurement, you should measure your peak flow when you have no asthma symptoms. Perform three measurements with the same peak flow meter two to four times daily for two to three weeks.