Risk of infection higher for patients with obesity after bypass surgery

June 19, 2017
Tasuku Terada (left), postdoctoral research fellow at the University of Alberta's Faculty of Rehabilitation Medicine, and his supervisor, Mary Forhan. Credit: University of Alberta

Patients with obesity have a higher risk of infection within 30 days after receiving heart bypass surgery, according to a series of studies conducted by University of Alberta researchers at the Faculty of Rehabilitation Medicine.

The team analyzed data from 56,722 in the provincial registry to examine associations between (BMI) and various outcomes following grafting (CABG) surgery and (PCI), also known as coronary angioplasty.

"Compared to patients with normal BMI, we found that patients with BMI greater than 30 were 1.9 times more likely to report infections after bypass surgery," said Tasuku Terada, a rehabilitation science postdoctoral research fellow who recently presented the series of studies at the Canadian Obesity Summit. "A better understanding is needed in order to improve clinical outcomes for patients with obesity and heart disease."

In addition, another study in the series published in the Canadian Journal of Cardiology found that 88 per cent of patients who received PCI were classified as obese, compared to 55 per cent of the patients who received CABG. PCI is a non-surgical procedure that opens up narrowed arteries in the heart due to plaque buildup. The physician places a small stent to keep the artery open and help to prevent re-narrowing.

Terada says the risk of infection following CABG may explain why patients with obesity are more likely to receive PCI.

"We need to look at why there is more infection following CABG and whether more patients with obesity are receiving PCI because they should be, or because the risk is a factor in the decision made by health-care professionals," he says.

Postsurgical infection means an increase in the length of stay at the hospital for patients, resulting in increased medical costs and use of resources. Knowing the risks and potential outcomes can help health-care providers and patients make more informed choices on treatment and better use of resources.

Mary Forhan, obesity expert and assistant professor in occupational therapy at the Faculty of Rehabilitation Medicine, believes that further investigation will help researchers develop tools to help decrease the risk of infection, and to ensure that patients are receiving proper care.

"For example, are the chest binders that are used after surgery the right size and are they working the right way?" she says. "Our team is currently looking at the re-design of postsurgical chest binders so that patients have better outcomes following ."

Explore further: Post coronary artery bypass infections may be linked to severe obesity

Related Stories

Post coronary artery bypass infections may be linked to severe obesity

June 1, 2016
Coronary artery bypass patients who have severe obesity are more likely to experience infection shortly after surgery and stay in the hospital longer, according to new research in Journal of the American Heart Association, ...

Heart bypass surgery outperforms new generation stents

March 16, 2015
Despite the advent of a new generation of stents, patients with multiple narrowed arteries in the heart who received coronary artery bypass grafting fared better than those whose arteries were opened with balloon angioplasty ...

Beta-blockers before coronary artery bypass grafting surgery not associated with better outcomes

June 16, 2014
Use of beta (β)-blockers in patients who have not had a recent heart attack but were undergoing nonemergency coronary artery bypass grafting (CABG) surgery was not associated with better outcomes.

Arteries over veins prove better for heart bypass surgery in patients with diabetes

July 14, 2016
Diabetic patients who undergo heart bypass surgery are living longer and have much better long-term outcomes when cardiothoracic surgeons use arteries rather than veins for the bypasses, according to a new study published ...

Stent, bypass outcomes better for those who stick to medical therapy

October 24, 2016
Patients who had a stent procedure or heart bypass surgery and continued with their prescribed medical therapy had significantly better outcomes than non-adherent patients, according to a study published today in the journal ...

PCI viable alternative to CABG for left main coronary artery disease

February 8, 2017
(HealthDay)—For patients with left main (LM) coronary artery disease, percutaneous coronary intervention (PCI) is an alternative to coronary artery bypass grafting (CABG), according to a study published in the Feb. 15 issue ...

Recommended for you

How genes and environment interact to raise risk of congenital heart defects

October 19, 2017
Infants of mothers with diabetes have a three- to five-fold increased risk of congenital heart defects. Such developmental defects are likely caused by a combination of genetic and environmental factors. However, the molecular ...

Mouse studies shed light on how protein controls heart failure

October 18, 2017
A new study on two specially bred strains of mice has illuminated how abnormal addition of the chemical phosphate to a specific heart muscle protein may sabotage the way the protein behaves in a cell, and may damage the way ...

Newborns with trisomy 13 or 18 benefit from heart surgery, study finds

October 18, 2017
Heart surgery significantly decreases in-hospital mortality among infants with either of two genetic disorders that cause severe physical and intellectual disabilities, according to a new study by a researcher at the Stanford ...

Saving hearts after heart attacks: Overexpression of a gene enhances repair of dead muscle

October 17, 2017
University of Alabama at Birmingham biomedical engineers report a significant advance in efforts to repair a damaged heart after a heart attack, using grafted heart-muscle cells to create a repair patch. The key was overexpressing ...

Physically active white men at high risk for plaque buildup in arteries

October 17, 2017
White men who exercise at high levels are 86 percent more likely than people who exercise at low levels to experience a buildup of plaque in the heart arteries by middle age, a new study suggests.

High blood pressure linked to common heart valve disorder

October 17, 2017
For the first time, a strong link has been established between high blood pressure and the most common heart valve disorder in high-income countries, by new research from The George Institute for Global Health at the University ...

0 comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.