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This test can give you advance warning of an asthma attack. Pulse oximetry, or “pulse ox.”. This test uses a device that measures how much oxygen your red blood cells are carrying. The device ...
Types of direct contact include the following. 1. Person-to-person contact. Infectious diseases are commonly transmitted through direct person-to-person contact. Transmission occurs when a person ...
In people with COPD, gas exchange is often impaired. This is because COPD is associated with progressive damage to the alveoli and airways. Impaired gas exchange in COPD can cause symptoms like ...
More serious allergies can lead to anaphylaxis and closing of the airways. Common cold. The common cold is an upper respiratory tract infection that can be triggered by over 200 viruses. Symptoms ...
If you're having problems reading and retrieving your AOL Mail, the following troubleshooting steps: Use AOL Basic Mail. AOL Basic Mail gives you a way to see your emails in a simpler layout. This can often help when you're having problems retrieving mail on a slower connection speed. Reset your web settings
The switchboard operator was a person who manually connected calls by plugging and unplugging cords on the switchboard. The role of the switchboard and operator was important because they were responsible for connecting callers with the correct party and ensuring that calls were completed correctly.
Group C (GOLD 3 or 4): Air flow into and out of your lungs is severely limited. Your FEV-1 is between 30% and 50%. You’ve had more than two flare-ups in the past year, or you’ve been admitted ...
The respiratory system is the organs and other parts of your body involved in breathing, when you exchange oxygen and carbon dioxide. All the cells in your body need oxygen to work. As they take ...