Washington: The next time you blow your nose or drink a cup of coffee or even have sex, beware -- these may temporarily raise your risk of getting a stroke, a new study has claimed. The Dutch study, published in `Stroke: Journal of the American Heart Association`, identified eight main triggers that appear to increase the risk of intracranial aneurysm (IA) -- a weakness in the wall of a brain blood vessel that often causes it to balloon. If ruptures, it can result in a subarachnoid hemorrhage which is a stroke caused by bleeding at the base of the brain. Other regular activities that may cause a stroke included vigorous physical exercise, straining to defecate, being startled, being angry and drinking cola, found the study. "All of the triggers induce a sudden and short increasein blood pressure, which seems a possible common cause for aneurysmal rupture," said lead researcher Monique H M Vlak of the University Medical Center in Utrecht, the Netherlands. "Subarachnoid hemorrhage caused by the rupture of an intracranial aneurysm is a devastating event that often affects young adults," Vlak said. "These trigger factors we found are superimposed on known risk factors, including female gender, age and hypertension." On alcohol use, the researches said the risk was higher shortly after drinking, but it declines quickly. According to them, few people with IAs have symptoms before such a rupture, such as vomiting, vision problems, loss of consciousness, and especially severe headaches. But, many people show no symptoms. With the increasing use of neuroimaging techniques, more incidental aneurysms are being detected, the researchers said. For their study, the researchers asked 250 patients with aneurysmal subarachnoid hemorrhage to complete a questionnaire about exposure to 30 potential trigger factors in the period shortly before their event and their usual frequency andintensity of exposure to these triggers.
"Whether prescribing antihypertensive drugs to patients with unruptured IAs is beneficial in terms of preventing aneurysmal rupture still needs to be further investigated."PTI
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