Medically reviewed by Steffini Stalos, DO A dangerously low oxygen level—usually below 92%—can cause shortness of breath, confusion, chest pain, or fainting. It’s often triggered by lung or ...

Northwestern University and Chicago-based health system Endeavor Health have developed a new computer program that can help ...

Recent trauma or surgery: Pain and medications postsurgery can lead to shallow breathing and low oxygen levels, resulting in sickling in the lungs that causes acute chest syndrome. Infections ...