Why do some people have better outcomes after surgery than others?
The idea that surgery is more successful for some people than others is widely accepted, but little is known about whether it’s true for others.
That’s what a new study by an international team of researchers, led by Dr. James B. Blair of the University of Nebraska Medical Center, will reveal.
“We know that some people, like those with cardiovascular disease, have worse outcomes than others, so we wanted to know whether that’s because surgery is less effective for people with higher risk of heart attack or stroke than others,” Blair said.
The study, published online on Thursday in the American Journal of Cardiology, examined outcomes of more than 6,000 people with coronary artery disease who underwent a coronary artery bypass (CABD) or heart transplantation.
The researchers looked at whether there was a difference in survival between people who received surgery and those who didn’t, and whether this difference was statistically significant.
A similar study by a team at the University at Buffalo has found that people with high risk of having a heart attack who underwent surgery fared worse than people with lower risk.
The new study was based on data from the Medicare-Medicaid Health Insurance Program, a health insurance program for the elderly, disabled and people with incomes below 138 percent of the federal poverty level.
To examine this, the researchers used a computer model that took into account a person’s baseline health and their risk of developing a cardiovascular disease in the next year.
“There are two ways to look at this,” Blair explained.
“One is to say that this is a statistical result.
But if we look at how much worse the outcomes are for people who have a heart problem, it doesn’t matter if it’s because of surgery or not, so the results are basically the same.”
The other way is to look to the underlying causes of heart disease, such as age, genetics, smoking, physical inactivity, genetics and other factors, the study authors said.
These factors can be more important than surgery for determining outcomes, the authors wrote.
“It’s not that surgery doesn’t work,” Blair added.
“But in general, we don’t know enough about it to say whether it works for some, or not.”
“There is a lot of variability in the outcome of heart failure,” he said.
“In some people who are not at high risk, it’s probably not worth it.”
The study authors did not find a statistically significant difference between the outcomes of people who had surgery and people who didn.
They did find that some patients with high-risk conditions are less likely to survive the procedure.
“The effect of surgery on survival of people with cardiovascular diseases is very small,” Blair noted.
“I would hope that there’s more than one type of heart problem.”
What the study found was that there was no difference in the outcomes among people who did or did not have a cardiovascular condition.
But the differences did not last for more than two years.
“If people had been given surgery to prevent a heart disease they would have survived five years longer than people who weren’t given surgery,” Blair stated.
“This finding suggests that the surgery could have prevented the disease, but we don