Can blood pressure affect pulse oximeter readings?

Not usually.. The only effect would be if the blood pressure is extremely low causing poor peripheral blood flow. In this instance, the pulse ox may be inaccurate. This could occur in shock situations. As long as the blood flow remains normal, the blood pressure will not affect pulse ox.

Related Questions

In a home environment with a pulse oximeter & a blood pressure machine. Is it better to take 25-50mg oral morphine or 10mg IV morphine. Med hist for y?

Pain Managment MD. Conversion charts mention that approx 50-60mg of oral morphine (depending on extended or immediate release) are equivalent to 10mg IV morphine. This is a pretty significant dose for individuals. Unless they have been taking it for a while and develop resistance. Questions regarding this is far safer to address with the pain management doctor since respiratory suppression is an IMPORTANT factor. Read more...

Is a pulse oximeter still accurate when you're lying down, arms flat by side? Doctor said less blood flow might affect it.!

Yes. Hi Matthew, a pulse-oximeter is still accurate when lying down. A few things that can affect the reading are the temperature of the patient's hands as well as if there is any nail polish obscuring the sensing device. Read more...

Hx-fascicular vt, ablation 2010. Recent dizzy spells with athome pulse oximeter of 120 and 250 BPM for seconds. Serious head pressure, why? Svt or vt?

Can be either. Can be either one.. You need an event monitor and possibly another ep study ; ablation.. Fascicular VT is quite rare. Beta blockers don't work on it... Why are you on beta blockers if the VT was ablated successfully, any way? Read more...
Vt Svt . Without seeing ECG we can't tell you should have Holter and or event recorder . Read more...

Why do I get higher pulse oximeter readings from my fingers than my toes?

Varies. Sometimes it can be from a technical difficulty in getting a good reading in your foot, or there may be a reduction in blood flow to your legs, PAD is one potential cause of this. There is a test known as an ABI that is non- invasive and give further information about the blood flow into your arms and legs. I would discuss your question directly with your doctor. Read more...
Methodology... Try comparing the readings of both fingers. Then compare the readings of both toes. I'm thinking there is calibration issue that is optimal on the finger. Read more...