After non-cardiac surgery, one in 14 over 65 years old has a silent stroke.
Undergoing surgery is often a cause for concern because there is always a risk, even a small one, of complication. In The Lancet, Canadian researchers show that they are more numerous for seniors. Postoperative silent strokes would be common in people over 65 years of age.
NEW: Perioperative covert stroke is associated with increased risk of cognitive decline 1 year after non-cardiac surgery in 14 patients aged ≥65 years undergoing non-cardiac surgery: findings from NeuroVISION, a prospective cohort study //t.co / jWXkl6GllU pic.twitter.com/w3mDziUPSR- The Lancet (@TheLancet) August 16, 2019
Risks of "classic" stroke and cognitive decline
Silent strokes can only be detected by performing an MRI because the usual symptoms, such as weakness of an arm, do not occur. Scientists conducted a study of 1,114 patients aged 65 years and over from New Zealand, North and South America, Asia and Europe. All had an MRI within 9 days of surgery and their cognitive function was analyzed over a one-year period. A total of 78 participants had a silent stroke, or 7% of the sample.
Of these, 13% were at risk of having an "ordinary" stroke in the year following surgery or experiencing cognitive decline. "We have found that" silent "strokes are actually more common than obvious strokes in people aged 65 or older, who are undergoing surgery," says Dr. PJ Devereaux, one of the authors. of research.
15 million stroke each year
According to the researchers, if a patient over the age of 65 in 14 suffers a silent stroke after an operation, that means that three million seniors are in total every year in the world. The World Health Organization estimates that 15 million people have a stroke each year.