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PhD student wins national award for fluids research in stroke therapy

Alexander James Servantez — Fri, 17 Jan 2025 20:43:07 +0000

PhD student wins national award for fluids research in stroke therapy Alexander Jame… Fri, 01/17/2025 - 13:43

Alexander Servantez

Nick Rovito, a first-year PhD student in the Paul M. Rady Department of Mechanical Engineering, was living on top of the world.

After submitting a technical publication to the American Society of Mechanical Engineers (ASME) Fluids Engineering Division, he was named one of five finalists for the Young Engineer Paper Competition and was invited to present his research at the International Mechanical Engineering Congress & Exposition (IMECE) conference in Portland, Oregon.

Nick Rovito, first-year PhD student and winner of the American Society of Mechanical Engineer's Young Engineer Paper Competition.

Rovito’s award-winning research article is titled “In Silico Analysis of Flow-Mediated Drug Transport For Thrombolytic Therapy in Acute Ischemic Stroke.” The piece featured a multi-physics model coupling fluid dynamics, drug transport and reactions that emulates the clot-dissolving process in stroke treatment.

Simply being recognized amongst the other finalists at such a prestigious gathering was already the honor of a lifetime, he said. With over 1,600 research leaders across nearly 20 technical tracks, the IMECE conference features one of the largest and most diverse conference communities that ASME has to offer. It’s often touted as the largest mechanical engineering conference in the country.

But when presentations had concluded and the judges were done deliberating, Rovito wasn’t just a finalist. He was the winner.

As a graduate research assistant in the FLOWLab, led by Assistant Professor Debanjan Mukherjee at the ��«��Ƶ, Rovito conducts computational fluid dynamics research analyzing the mechanisms of thrombolysis in the blood vessels of the brain. This primary mode of stroke therapy involves administering medication to help restore blood flow by dissolving blood clots that may be causing a stroke.

“The FLOWLab is very multidisciplinary,” Rovito said. “We study stroke and medicine by analyzing fluid motion and transport through the cardiovascular system. Recognizing this allows us to apply principles of mechanical engineering to an otherwise medically focused field.”

His work aims to answer two questions: why do stroke treatments fail, and how can we increase their efficacy in the future?

“When you have a stroke, there’s an artery in your brain that is being blocked by a blood clot. Tissue plasminogen activator is the only drug approved by the FDA to treat this, but nearly 50 percent of patients don’t actually see the clot fully dissolve,” Rovito said. “A stroke left untreated could spell permanent disability or death, so we want to study the fluid mechanics within the vascular structure and see exactly how that drug is being delivered to the blood clot.”

Thrombolysis is known to present other dangerous issues, as well. Tissue plasminogen activator is categorized as an anticoagulant or a blood thinner. The drug’s job is to interfere with the clotting process and prevent blood clots from forming or growing.

However, the drug is not capable of targeting specific blood clots. It will dissolve any blood clot, including those that are not causing the stroke. Rovito says this can lead to severe bleeding if the drug goes elsewhere in the brain, or if it is overused.

Assistant Professor Debanjan Mukherjee (left) and Nick Rovito (right). Rovito is a graduate research assistant in the FLOWLab, led by Mukherjee.

“Around twenty percent of the patients who receive this drug experience major bleeding whether the stroke treatment is successful or not,” he said. “Understanding drug delivery from a flow physics standpoint helps us understand what the drug is doing when it’s administered so we can potentially mitigate those issues in the future.”

“I felt confident about my work,” Rovito said. “But I was just happy to be there. Everybody’s work was phenomenal. Any of the finalists could have won. So when the results came out, I was thrilled.”

Mukherjee, a co-author of the publication, had no doubt that Rovito’s work had what it took to win.

“Drug delivery investigation is at the core of our research group, and a lot of the strides we’ve made in modeling and simulation tools have been because of Nick’s efforts,” said Mukherjee, also a faculty member in biomedical engineering (BME) at CU ��«��Ƶ. “This is a very complicated problem, and his research is novel. The fact that he was able to win this award three semesters into his PhD pursuit speaks to his great ability to accomplish these technical tasks.”

Rovito hopes to continue improving this model and solving problems related to the clinical challenges of today. Their next steps in this project related to stroke therapy will be in collaboration with the neurology team at the University of Colorado Anschutz Medical Campus, a frequent collaborator with the FLOWLab.

Beyond his research, Rovito also hopes to translate his technical skills into a long-term teaching career.

“One of my passions is teaching and scientific communication,” he said. “CU ��«��Ƶ is a great place for me to continue my technical work and develop as an educator.”

First-year PhD student Nick Rovito has been named the winner of the Young Engineer Paper Competition at this year's International Mechanical Engineering Congress & Exposition (IMECE) held by the American Society of Mechanical Engineers. His novel research aims to answer two questions: why do stroke treatments fail, and how can we increase their efficacy in the future?

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PhD student Nick Rovito (middle right) accepting the Young Engineer Paper Competition Award during the International Mechanical Engineering Congress & Exposition (IMECE) conference in Portland, Oregon.

University of Colorado students are taking part in advancing robotics to help first responders

Alexander James Servantez — Fri, 06 Dec 2024 18:35:53 +0000

University of Colorado students are taking part in advancing robotics to help first responders Alexander Jame… Fri, 12/06/2024 - 11:35

Sean Humbert, professor in mechanical engineering and director of the Robotics graduate program, chats with CBS News Colorado about some of the technology him and his students are working on at CU ��«��Ƶ. One of their builds is a robot that the ��«��Ƶ County Sheriff's Office uses to support their bomb squad team.

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New research on exotendons advances assistive technology for runners

Alexander James Servantez — Fri, 22 Nov 2024 21:06:40 +0000

New research on exotendons advances assistive technology for runners Alexander Jame… Fri, 11/22/2024 - 14:06

Madison Seckman

Olivia Felton

Olivia Felton is a PhD student in the Welker Lab, led by Assistant Professor Cara Welker, at the ��«��Ƶ. Their main focus: to use assistive technology to help both able-bodied individuals and those with disabilities.

Felton earned her Bachelor of Science in Mechanical Engineering from Baylor University. During her time as an undergraduate, she worked in a fluids lab. While she found the research interesting, she knew it was not what she wanted to study long term.

Currently, her work focuses on recreational runners. In her experiments, participants run on a force instrumented treadmill, which tracks their ground reaction forces. They also wear a metabolic mask to measure energy expenditure during running. The running is slightly different than what they are used to, however, since they have an exotendon attached to their feet.

The exotendon is surgical tubing with loops on both ends held in place with zip ties and s-biners to clip onto the shoes of the person being tested. It creates a force between the individual's feet as the tubing stretches and molds as they run. Dr. Welker’s research has shown that the exotendon allows a runner to expend about six percent less metabolic energy when running at a 10 minute mile pace.

Moving forward, Felton is expanding the study by understanding the effect of running with the exotendon at a range of speeds and how reducing metabolic energy expenditure affects self-selected running speed.

Throughout her research, Felton has found she enjoys working with the many different people who come through her lab.

“One really cool thing about this study is that we're recruiting recreational runners, so I do a lot of run clubs around ��«��Ƶ to recruit participants. I've met a lot of really great people,” Felton shared.

Olivia Felton is a PhD student in the Welker Lab at the ��«��Ƶ. Their main focus: to use assistive technology to help both able-bodied individuals and those with disabilities.

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