"Vital signs" are still only meaningful in terms of humans talking about how the body of a human (or an animal, or a living or life-like system) should function. Blood pressure just is - whether its measured value is "good" or "bad", that's up to our preferences for what it should be.

If you remove sapience from this situation, then blood pressure just is, period. One particular aspect of what is just one big chemical reaction, or [insert whatever is at the bottom of how reality works].

It is said that since god died, the meaning of life is what we make it to be. But if there's no one around capable of processing the concept of meaning, then life has no meaning at all.