A different kind of anesthesia a possible treatment for stress-induced cardiomyopathy

November 25, 2015

Stress induced cardiomyopathy after cerebral hemorrhage has been shown to increase the risk of further brain damage. These patients can now be identified by a simple blood test, and a possible treatment for stress induced cardiomyopathy has been discovered - a different kind of anesthesia than that currently being used. A new doctoral thesis at University of Gothenburg has explored these issues.

Stress induced cardiomyopathy is a relatively recently discovered disease where part of the heart muscle ceases to function and results in the heart having reduced pumping capacity. Approximately 90 percent of those affected are upper middle-aged women. The onset is similar to a heart attack, with chest pain and difficulty breathing, but stress induced cardiomyopathy follows a different course.

With stress induced heart failure, the heart spontaneously recovers within a few weeks and thus the prognosis has been seen as good; but, new findings show the prognosis to be approximately the same as for acute ischemic heart disease.

Followed for two years

In a new thesis from Sahlgrenska Academy, all patients from the region that suffered a specific type of cerebral hemorrhage (subarachnoid hemorrhage) were followed for two years. In conjunction with the hemorrhage, patients experience a strong stress component. Stress induced cardiomyopathy is therefore relatively common (10-20 percent of the patients) following this type of cerebral hemorrhage, which can cause significant brain damage.

"We saw that patients with stress induced cardiomyopathy had an increased risk of further brain damage in the aftermath of a cerebral hemorrhage and had a worse long-term prognosis, even after we made adjustments for other risk factors," says Jonatan Oras, PhD Student at Sahlgrenska Academy, University of Gothenburg.

Biomarkers were identified

In the thesis, two biomarkers were identified that can be used to identify patients who suffer from stress induced heart failure.

"With a blood test, we are now able to quickly identify patients with stress induced heart failure and apply the right measures sooner," says Jonatan Oras.

A possible treatment

In the experimental part of the thesis, an animal model was used with rats to find a possible treatment for stress induced heart failure. It was found that if the animals were anesthetized with a particular anesthetic ( isoflurane), they did not develop heart failure and the heart muscle retained its elasticity and pumping capacity.

"When we used other anesthetics, including those currently in use in healthcare, we saw no cardioprotective effect. This is the first potential cardioprotective treatment for stress induced cardiomyopathy to be presented," says Jonatan Oras.

Further studies of this possible treatment for stress induced cardiomyopathy on patients at risk of developing stress induced cardiomyopathy should be conducted," Jonatan Oras points out.


Subarachnoid hemorrhage is a type of brain hemorrhage that is caused by a malformation of one of the brain's blood vessels bursting. It affects younger persons and can result in significant brain damage. Approximately 40 percent of patients die from the hemorrhage and a third of those that do survive sustain incapacitating brain damage that renders them unable to manage their daily lives. In connection with subarachnoid hemorrhage, the patients often experience a strong stress component and therefore, many of these patients suffer from stress induced cardiomyopathy in the aftermath.
The thesis Stress-induced cardiomyopathy - clinical and experimental studies was defended on November 13.

Link to thesis: http://hdl.handle.net/2077/39562

University of Gothenburg

Related Brain Articles from Brightsurf:

Glioblastoma nanomedicine crosses into brain in mice, eradicates recurring brain cancer
A new synthetic protein nanoparticle capable of slipping past the nearly impermeable blood-brain barrier in mice could deliver cancer-killing drugs directly to malignant brain tumors, new research from the University of Michigan shows.

Children with asymptomatic brain bleeds as newborns show normal brain development at age 2
A study by UNC researchers finds that neurodevelopmental scores and gray matter volumes at age two years did not differ between children who had MRI-confirmed asymptomatic subdural hemorrhages when they were neonates, compared to children with no history of subdural hemorrhage.

New model of human brain 'conversations' could inform research on brain disease, cognition
A team of Indiana University neuroscientists has built a new model of human brain networks that sheds light on how the brain functions.

Human brain size gene triggers bigger brain in monkeys
Dresden and Japanese researchers show that a human-specific gene causes a larger neocortex in the common marmoset, a non-human primate.

Unique insight into development of the human brain: Model of the early embryonic brain
Stem cell researchers from the University of Copenhagen have designed a model of an early embryonic brain.

An optical brain-to-brain interface supports information exchange for locomotion control
Chinese researchers established an optical BtBI that supports rapid information transmission for precise locomotion control, thus providing a proof-of-principle demonstration of fast BtBI for real-time behavioral control.

Transplanting human nerve cells into a mouse brain reveals how they wire into brain circuits
A team of researchers led by Pierre Vanderhaeghen and Vincent Bonin (VIB-KU Leuven, Université libre de Bruxelles and NERF) showed how human nerve cells can develop at their own pace, and form highly precise connections with the surrounding mouse brain cells.

Brain scans reveal how the human brain compensates when one hemisphere is removed
Researchers studying six adults who had one of their brain hemispheres removed during childhood to reduce epileptic seizures found that the remaining half of the brain formed unusually strong connections between different functional brain networks, which potentially help the body to function as if the brain were intact.

Alcohol byproduct contributes to brain chemistry changes in specific brain regions
Study of mouse models provides clear implications for new targets to treat alcohol use disorder and fetal alcohol syndrome.

Scientists predict the areas of the brain to stimulate transitions between different brain states
Using a computer model of the brain, Gustavo Deco, director of the Center for Brain and Cognition, and Josephine Cruzat, a member of his team, together with a group of international collaborators, have developed an innovative method published in Proceedings of the National Academy of Sciences on Sept.

Read More: Brain News and Brain Current Events
Brightsurf.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com.