I am hearing a word here that goes with Congestive Heart Failure and a number of other conditions, hypoxia.

If you're not getting enough oxygen you can sound and act drunk, then if you add alcohol or other breathing depressants, the sufferer can vague right out.

Tests can range from checking whether beneath the fingernails has a blu-ish tinge to blood oxygen metering over a period.

Some conditions can also decrease the lungs' ability to extract oxygen without cough or discomfort.

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