If PRA is low, the blood pressure should be high. I do not know if that will affect his heart rate. But if PRA is high and the person is in adrenal crisis, the heart rate will be fast. I think fast heart rate is one sign of adrenal crisis.

When my daughter was 3 months old, I noticed the blueish around her lip as well. I asked her endo, but she said she did not see anything.