…One of three studies presented at a virtual meeting of the American Heart Association on Thursday. Among more than 11,000 people across 22 studies from eight countries, 42% of COVID-19 patients had high blood pressure, the researchers found. ... High blood pressure on its own was associated with a higher likelihood of death, the combined results showed. However, it's not high blood pressure itself that presents the most danger to COVID-19 patients. Instead, it's when their blood pressure plummets that they are at their most vulnerable, a smaller second study suggests.