How RELIABLE Is Pulse Oximetry?
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YouTubeThe Paramedic Coach
How RELIABLE Is Pulse Oximetry?
Pulse oximetry is a non-invasive method used to measure the oxygen saturation level of the blood. However, it's crucial to exercise caution when relying on pulse oximetry in cases of carbon monoxide (CO) poisoning. Carbon monoxide binds to hemoglobin with a much higher affinity than oxygen, which pulse oximeters can mistakenly interpret as ...
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Your pulse ox says 98%. Everything’s fine… right? Not always. SpO₂ measures hemoglobin saturation, not how much oxygen is actually being delivered to tissues. A patient can have a normal SpO₂ and still be hypoxic in certain situations, like severe anemia or carbon monoxide poisoning. Understanding the difference between oxygen saturation and oxygen delivery is an important concept for nursing exams and clinical practice. If the bus analogy helped you understand it, drop a 🚌 in the comments. #nu
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