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Houma, LA
A 17-year-old male asked:

If someone is having a heart attack. would the pulse oximeter show an oxygen sat level below normal range?

2 doctor answers4 doctors weighed in
Dr. Lonna Larsh
Family Medicine 30 years experience
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.
Dr. Mark Stern
Cardiology 46 years experience
No, unless...: It woundn't affect o2 sat unless it caused CHF or cardiac arrest.

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Last updated Nov 25, 2019

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