Why Does a 12-Lead ECG Only Use 10 Electrodes?
A 12-lead ECG may sound like it requires 12 electrodes, but in reality, only 10 electrodes are placed on the...
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What is Pulse Oximetry Monitoring?
Pulse oximetry is a non-invasive, painless medical technology used to continuously monitor two vital signs in real-time: Oxygen Saturation (SpO2): The...
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What Does "Source SpO2" Mean on a Hospital Monitor?
On a hospital vital signs monitor, "SpO2" or "Source SpO2" refers to the measurement of peripheral capillary oxygen saturation—the percentage of hemoglobin in your...
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What Is the Lowest Oxygen Level Before Death?
Understanding Oxygen Levels at End-of-Life It is difficult to define a single "lowest" oxygen level before death, as the dying...
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- December 2025
- November 2025
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- How to Read an ECG for Beginners (Simple Step-by-Step Guide)
- Do I Have to Take Off My Bra for an EKG? (Clear Answer + What to Expect)
- How to Quickly Raise Low Oxygen Levels at Home
- Signs and Symptoms That Someone May Need Oxygen
- What Nurses Do When Reading EKGs
- How to Increase Oxygen Levels While Sleeping
- October 2025
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