As far as I am aware, there are no official studies regarding blood pressure rates and Rh factor or even ABO groups.
In multiple questionnaires in my own group I have detected a trend of low blood pressure data common among rh negatives. Some also claimed high blood pressure. Very few seemed to have “normal” numbers.
I have B Neg, I’ve had several occasions where my blood pressure is really low and twice actually passed out from it dropping so low, no warning, otherwise everything was fine. It runs normal most of the time but there’s been moments.
I’m O- and my blood pressure runs low but it’s normal for me. It always cracks me up when my doc hires a new nurse because they’ll take and say, “that can’t be right” and take it again. I’ve started telling them to look at my chart and previous BP readings. However, my heart rate runs on the high side.
It always takes them several tries to take my blood pressure. The automatic machine always says fault. My normal is low blood pressure and a normal temperature of 96.