A LOCAL GP has instructed a Waubra resident to undergo 24-hour blood pressure monitoring.The resident was requested to wear a portable Holter monitor following an episode of acute hypertension.Waubra Foundation director Dr Sarah Laurie said the resident’s blood pressure became “extremely elevated” overnight while sleeping, while turbines were operating.Self-testing of morning blood pressure by a small group of Waubra residents began recently.But Dr Laurie said 24-hour blood pressure tests were also being undertaken by people living close to turbines in both America and Canada.She said preliminary results showed “dangerously” high blood pressure levels while people slept and while turbines were operating.“These are patients who do not necessarily have previously diagnosed hypertension,” Dr Laurie said.“They and their family physician might think their blood pressure is normal, because it is normal when measured in the doctor’s surgery, during the day, well away from turbines.”Dr Laurie said peer-reviewed experimental evidence showed a link between infrasound – sound waves below the level of human hearing and allegedly produced by turbines – and hypertension.Potential health effects from living near wind turbines remains one of the most hotly-debated issues surrounding the push to green energy.