Archive for cardiac research
Injected microbubbles could be a safe way to deliver emergency oxygen
For years, researchers and clinicians have been trying to find a way to rapidly deliver oxygen to patients when traditional means of oxygenation are difficult or ineffective during critical moments of cardiac or respiratory arrest. Sometimes, hypoxemia caused by airway obstruction or lung disease can be so severe that methods to boost low-oxygen levels (including ... Read More about Injected microbubbles could be a safe way to deliver emergency oxygen
Shoring up heart muscle’s mini ‘managers’ to treat heart failure
Our heart muscle is studded with tiny dyads, intricately designed structures that manage incoming electrical signals and calcium release to coordinate our heartbeats. Could gene therapy help maintain dyads’ structure and boost the function of failing hearts? A new study suggests it can. “We know that in heart failure from many causes, dyads become disorganized,” says ... Read More about Shoring up heart muscle’s mini ‘managers’ to treat heart failure
Finding a possible genetic treatment for rare arrhythmias
Variants in a gene that plays a key role in heart function can cause potentially life-threatening arrhythmia syndromes known as calmodulinopathy. Calmodulinopathy is rare and causes arrhythmias that are poorly treated by current options. Boston Children’s cardiologist William Pu, MD, believes he has found a promising custom genetic treatment: antisense oligonucleotides that deplete the disease-causing gene product. ... Read More about Finding a possible genetic treatment for rare arrhythmias
Eight years of preparation for a surgical first: a partial heart transplant
Boston Children’s cardiac surgeons have an overriding goal for each patient: If possible, repair their congenital heart defect (CHD) — rather than replace any native heart tissue. Preserving heart tissue often leads to a speedier and more complete recovery and longer-lasting cardiac function. Sometimes, though, a patient’s valve tissue is beyond repair and a bioprosthetic or mechanical replacement valve ... Read More about Eight years of preparation for a surgical first: a partial heart transplant
Mitochondrial transfer restores heart muscle — but how?
Transferring mitochondria from a patient’s healthy skeletal muscle to damaged, ischemic heart tissue has been shown to restore heart muscle, increase energy production, and improve ventricular function. After pioneering preclinical work by James McCully, PhD, at Boston Children’s Hospital about a decade ago, cardiac surgeons led by Sitaram Emani, MD, have been testing it as ... Read More about Mitochondrial transfer restores heart muscle — but how?
Constant improvements make the Ross procedure a safe aortic valve replacement option
Cardiac surgeons understand that innovation isn’t always about invention. Improving something can be just as transformative. So it shouldn’t come as a surprise that Boston Children’s cardiac surgery team is seeing lasting positive outcomes in patients after making adjustments over the years to the Ross procedure, a last-option treatment for aortic valve disease that hasn’t always been accepted by ... Read More about Constant improvements make the Ross procedure a safe aortic valve replacement option
Mending injured hearts: Lessons from newborns?
When the heart is injured, as in a myocardial infarction, the damaged heart muscle cannot regenerate — instead, scar tissue forms. Cardiomyocytes, the heart muscle cells that generate contractile force, are lost for good. Yet, in mouse models, the hearts of newborns regenerate readily after injury. How are newborn hearts able to recover? What are ... Read More about Mending injured hearts: Lessons from newborns?
Finding ways to reduce the financial and social costs of pacemakers
As the number of complex heart operations has increased over the years, so have cases of postoperative heart block, a form of arrhythmia that often requires a pacemaker and more surgery. Heart block occurs when unseen conduction tissue — the cells and electrical signals that control the beating of a heart — is injured. It is a ... Read More about Finding ways to reduce the financial and social costs of pacemakers
Helping aspiring clinicians understand a virtual heart before they work with a real one
Jonathan Awori, MD, MS, MFA, isn’t embarrassed to say it took him a long time to completely understand the intricate workings of the heart. He says he isn’t alone; many aspiring doctors and nurses don’t immediately grasp the heart’s complexity from two-dimensional textbooks or even 3D-printed models. Now that he’s a pediatric cardiology fellow at ... Read More about Helping aspiring clinicians understand a virtual heart before they work with a real one
Research aims to pinpoint genetic connection between autism and heart disease
Cardiology and neurodevelopmental researchers have more questions than answers about the possible genetic links between congenital heart disease (CHD) and autism spectrum disorder (ASD). A study that’s underway at Boston Children’s aims to pin down those elusive answers by taking a close look at the genetics of children with neurodevelopment and cardiovascular conditions. The researchers want to see ... Read More about Research aims to pinpoint genetic connection between autism and heart disease