News | Cardiovascular Ultrasound | June 13, 2016

Study Finds Echocardiography Good Predictor for Patient Risk Stratification

Mayo Clinic study uses cardiac echo to calculate aortic flow rate

ASE 2016, Mayo Clinic study, echocardiography, aortic flow rate, patient risk stratification

June 13, 2016 — Researchers from Mayo Clinic believe they have found a better way to risk stratify some of their most fragile patients.

Patients with reduced left ventricular ejection fraction (LFLGAS) being evaluated with dobutamine, a medically induced “stressor,” to view their heart function at work need special care. Looking at a cohort of these patients, the researchers found that using echocardiography to measure their aortic flow rate was a good predictor for their risk. “Our work highlights, for the first time, the importance of calculating aortic valve flow rate to risk stratify patients undergoing dobutamine stress echo for a low-flow, low-gradient aortic stenosis. We showed that flow rate goes above and beyond contractile reserve, which is what is being used right now, to risk stratify these patients,” said Said Alsidawi, M.D.

Researchers on the study, Low-flow, Low-gradient Aortic Stenosis: Prognostic Value of Flow Rates vs. Stroke Volume During Dobutamine Echocardiography, included Alsidawi, Robert B. McCully, Christopher G. Scott, Sorin V. Pislaru, Patricia A. Pellikka, Mackram F. Eleid, Jae K. Oh, and Vuyisile T. Nkomo from the Division of Cardiovascular Diseases, Mayo Clinic School of Medicine, Rochester, Minn.

This finding could be useful for many clinicians as patients presenting with low ejection fractions (EF) could be exhibiting an early sign of heart failure. These clinicians need good diagnostic options to assess whether valve replacement surgery or other therapies are needed.

Alsidawi presented a poster based on this research during the American Society of Echocardiography 27th Annual Scientific Sessions, June 10-14 in Seattle. This research was submitted as part of the “Valvular Heart Disease” topic area.

For more information: www.asescientificsessions.org

Related Content

 Many patients with severe coronavirus disease 2019 (COVID-19) remain unresponsive after surviving critical illness. Investigators led by a team at Massachusetts General Hospital (MGH) now describe a patient with severe COVID-19 who, despite prolonged unresponsiveness and structural brain abnormalities, demonstrated functionally intact brain connections and weeks later he recovered the ability to follow commands

Getty Images

News | Coronavirus (COVID-19) | July 08, 2020
July 8, 2020 — Many patients with severe coronavirus disease 2019 (...
R2* maps of healthy control participants and participants with Alzheimer disease. R2* maps are windowed between 10 and 50 sec21. Differences in iron concentration in basal ganglia are too small to allow visual separation between patients with Alzheimer disease and control participants, and iron levels strongly depend on anatomic structure and subject age. Image courtesy of Radiological Society of North America

R2* maps of healthy control participants and participants with Alzheimer disease. R2* maps are windowed between 10 and 50 sec21. Differences in iron concentration in basal ganglia are too small to allow visual separation between patients with Alzheimer disease and control participants, and iron levels strongly depend on anatomic structure and subject age. Image courtesy of Radiological Society of North America

News | Magnetic Resonance Imaging (MRI) | July 01, 2020
July 1, 2020 — Researchers using magnetic...
Thoracic findings in a 15-year-old girl with Multisystem Inflammatory Syndrome in Children (MIS-C). (a) Chest radiograph on admission shows mild perihilar bronchial wall cuffing. (b) Chest radiograph on the third day of admission demonstrates extensive airspace opacification with a mid and lower zone predominance. (c, d) Contrast-enhanced axial CT chest of the thorax at day 3 shows areas of ground-glass opacification (GGO) and dense airspace consolidation with air bronchograms. (c) This conformed to a mosai

Thoracic findings in a 15-year-old girl with Multisystem Inflammatory Syndrome in Children (MIS-C). (a) Chest radiograph on admission shows mild perihilar bronchial wall cuffing. (b) Chest radiograph on the third day of admission demonstrates extensive airspace opacification with a mid and lower zone predominance. (c, d) Contrast-enhanced axial CT chest of the thorax at day 3 shows areas of ground-glass opacification (GGO) and dense airspace consolidation with air bronchograms. (c) This conformed to a mosaic pattern with a bronchocentric distribution to the GGO (white arrow, d) involving both central and peripheral lung parenchyma with pleural effusions (black small arrow, d). image courtesy of Radiological Society of North America

News | Coronavirus (COVID-19) | June 26, 2020
June 26, 2020 — In recent weeks, a multisystem hyperinflammatory condition has emerged in children in association wit
Case abstraction study period was from 10 March to 7 April 2020. Follow-up of abstracted cases was until 7 May 2020.

Case abstraction study period was from 10 March to 7 April 2020. Follow-up of abstracted cases was until 7 May 2020. Courtesy of Nature Medicine

News | Coronavirus (COVID-19) | June 25, 2020
June 25, 2020 — The characterization of COVID-19
Neurosurgeon Jason Sheehan, M.D., Ph.D., of UVA Health, is pioneering the use of focused ultrasound to treat glioblastoma, the deadliest brain tumor. Image courtesy of UVA Health

Neurosurgeon Jason Sheehan, M.D., Ph.D., of UVA Health, is pioneering the use of focused ultrasound to treat glioblastoma, the deadliest brain tumor. Image courtesy of UVA Health

News | Focused Ultrasound Therapy | June 23, 2020
June 23, 2020 — An innovativ...
This image of DCE-MRI reveals persistent blood brain barrier disorder in American football players. Using brain imaging techniques and analytical methods, researchers can determine whether football players have CTE by measuring leakage of the blood-brain barrier. Image courtesy of Ben-Gurion University

This image of DCE-MRI reveals persistent blood brain barrier disorder in American football players. Using brain imaging techniques and analytical methods, researchers can determine whether football players have CTE by measuring leakage of the blood-brain barrier. Image courtesy of Ben-Gurion University

News | Magnetic Resonance Imaging (MRI) | June 22, 2020
June 22, 2020 — Chronic traumatic encephalopathy (CTE), a neurodegenerative disease caused by repeated...
Researchers from five infectious disease hospitals across four districts in Guangzhou, China found that the less pulmonary consolidation on chest CT, the greater the possibility of negative initial reverse transcription–polymerase chain reaction (RT-PCR) results for 21 patients (nine men, 12 women; age range, 26–90 years)

Comparison of CT features between groups with negative and positive initial RT-PCR results.
aThe difference was statistically significant in comparison of the two groups (p < 0.05).

News | Coronavirus (COVID-19) | June 18, 2020
June 18, 2020 —