<![CDATA[Some patients appear permanently blue despite having healthy hearts and lungs.]]>Some patients appear permanently blue despite having healthy hearts and lungs. The cause is a hemoglobin variant that pulse oximeters cannot read.

https://www.medicaldaily.com/hemoglobin-m-hyde-park-congenital-cyanosis-477814?utm_source=flipboard&utm_medium=activitypub

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]]>https://postcall.pub/topic/23c56faf-16a9-45a4-b759-2db7d7385803/some-patients-appear-permanently-blue-despite-having-healthy-hearts-and-lungs.RSS for NodeSun, 30 Aug 2026 11:15:19 GMTThu, 27 Aug 2026 09:57:37 GMT60