Erectile dysfunction drug helps young people with congenital heart diseaseMarch 11th, 2011 - 1:17 pm ICT by ANI
Washington, Mar 10 (ANI): A drug used to treat erectile dysfunction and pulmonary hypertension, has another possible use-helping children and young adults with congenital heart disease to better tolerate exercise, scientists have found.
Researchers from The Children’s Hospital of Philadelphia show the drug, called Sildenafil, significantly improved measures of exercise performance during stress testing in patients with single-ventricle heart disease,
All patients involved in the study had earlier undergone the Fontan operation, a procedure that redirects systemic venous blood directly to the pulmonary arteries, bypassing the heart.
It is the third operation in a staged series of surgeries for single-ventricle heart defects, life-threatening conditions in which a child is born with severe underdevelopment of one of the pumping chambers of the heart.
“Despite dramatically improved early operative success achieved over the past 20 years, morbidity and mortality are still a challenge for children who have undergone a Fontan operation,” said David J. Goldberg, primary investigator of this study.
“The staged palliation does not recreate a normal two-ventricle circulation; instead the series of surgeries creates a unique physiology in which exercise capacity is dramatically diminished,” he said.
In this study, researchers randomized 28 children and young adults who had undergone the Fontan operation an average of 11 years earlier to receive either placebo or sildenafil three times a day for 6 weeks.
The researchers found significant improvements in exercise performance during treatment with sildenafil compared to placebo.
The findings included improved ventilatory efficiency and, in two subgroups of patients, an improved ability to perform moderate levels of exercise. These changes suggest an overall improvement in the physiology associated with this unique circulation.
This study was published online on March 7 in the journal Circulation. (ANI)
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Tags: chambers of the heart, congenital heart disease, david j goldberg, exercise capacity, exercise performance, fontan operation, heart defects, moderate levels, morbidity and mortality, palliation, pulmonary arteries, pulmonary hypertension, s hospital, significant improvements, single ventricle, stress testing, study researchers, underdevelopment, venous blood, young adults