Low Oxygen and Symptoms of Atrial Fibrillation. Atrial fibrillation can decrease the amount of blood your heart pumps with each beat by as much as 20 to 30 percent. As a result, other symptoms will occur when your body isn't getting enough oxygen and nutrients. These include:
The function of the speaker it to talk about the topic for which s/he was engaged, or to the common interest of the group. If you mean an electronic device, a speaker is to â¦ amplify sound. 2 people found this useful.
Introducing When To Give An Informative Speech. The main purpose behind an informative speech is to deliver the information or message clearly to the audience. An informative speaker is responsible for researching on the topic provided and presents a detailed presentation in a very clear and concise manner.