I have experience with Aromatase inhibitors causing me to go from previously moderate hypertension to Labile Hypertension after taking one for 3 months. I now have BP that spikes up to 195/95 over & over at night, and down to 100/56 in the daytime. I went off the drug and am now on Fulvestrant shots. It is not worth it to sacrifice my cardiac health if you already have some problems like moderate, drug-controlled hypertension or other cardiac problems. I will say that the Fulvestrant has brought my spikes down to more normal ranges, thank goodness. The one report I have found about AI's & cardio risks is on this:
https://www.ahajournals.org/doi/10.1161/CIRCULATIONAHA.119.044750