A 24-year-old male asked:
If someone is having a heart attack. Would the pulse oximeter show an oxygen sat level below normal range?
1 doctor answer
Dr. Lonna Larsh answered
29 years experience in Family Medicine
Not necessarily: If the heart attack is huge, the heart will not pump effectively and blood will not circulate normally, causing a low oxygen saturation. More commonly, the heart attack will be smaller and the heart will continue to pump effectively enough to get blood to the lungs and then to the body, keeping the oxygen saturation normal.
Answered on Nov 25, 2019
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