Fluctuations in blood pressure linked to increased risk of stroke and death

Large fluctuations in blood pressure over time have been linked to an increased risk of stroke and death. Moreover, not only the level of pressure mattered, but also how much it changed between examinations. This conclusion was reached by scientists whose work was presented at the annual conference of the European Association for the Study of Diabetes (EASD).

The researchers analyzed data from more than 57 thousand people with an average age of 55 years. Participants had their blood pressure measured several times, after which scientists assessed its fluctuations. Observation lasted an average of about five years. During this time, 571 people suffered a stroke and 1,460 died.

The connection with changes in lower pressure was especially noticeable. The more it fluctuated, the higher the risk of stroke. Severe changes in lower blood pressure were associated with a 12 percent increased risk.

Fluctuations in blood pressure were also associated with the risk of death, regardless of its average level. A particularly high probability was observed in people with type 2 diabetes and severe changes in upper pressure.

According to the authors, monitoring how blood pressure changes over time can help more accurately determine the risk of cardiovascular problems. However, the study does not prove that pressure changes directly cause stroke.