This question in some ways is related to this question asked by JollySin.
When I did my first Himalayan trek, my guide there had told me that those with a low blood pressure (BP) are more susceptible to Acute Mountain Sickness (AMS). The logic according to him was that low BP along with high altitude will result in the blood flow to the brain reducing further and the symptoms of AMS are more likely to occur at an earlier stage in those with a low BP.
Hence, is there a scientific relationship between BP(either low or high) and AMS?
Please try to include references for the answers.