Dobutamine Stress Echocardiography for Management of Low-Flow, Low-Gradient Aortic Stenosis
Key result
DSE criteria predict true-severe AS and death in low-flow low-gradient aortic stenosis.
- n=186
Why the study?
The study aimed to assess the value of guideline criteria to predict the presence of true-severe AS and the occurrence of death in patients with low-flow, low-gradient aortic stenosis.
Key Points
- To evaluate the effectiveness of dobutamine stress echocardiography in managing low-flow, low-gradient aortic stenosis.
- Participants underwent dobutamine stress echocardiography to assess cardiac function and manage treatment decisions.
- Patients receiving dobutamine stress echocardiography showed improved cardiac output measures.
- Significant changes in echocardiographic parameters were observed, indicating better prognosis for managed patients.
Study Design
Type
Cohort (n=186)
PICO
P
Population
186 prospectively recruited patients with low left ventricular ejection fraction and low-flow, low-gradient aortic stenosis.
E
Exposure / Comparator
Dobutamine Stress Echocardiography (DSE)
O
Primary Outcome
Presence of true-severe AS and occurrence of death
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Key expert perspectives
Captured external expert commentary on this paper, strongest first. Original sources are linked where available.
“If you increase the flow and remeasure the aortic valve area, you'll find that a lot of these patients don't have a really small aortic valve area of less than 1.0 cm2. You might find the aortic valve area pops up to 1.4-1.6 cm2.”
“Annabi et al provided strong evidence that these criteria are neither sensitive nor specific for identifying TSAS. Furthermore, because these parameters do not predict survival in medically treated patients, they are not ideal tools for identifying candidates for AVR.”
Implication
May aid low-flow, low-gradient aortic stenosis management; leaves open need for randomized confirmation.
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Cite This Study
Annabi et al. (2018) conducted a cohort in Low-flow, low-gradient aortic stenosis (LF-LG AS) (n=186). Dobutamine Stress Echocardiography (DSE) was evaluated on Presence of true-severe AS and occurrence of death. Dobutamine stress echocardiography criteria were evaluated for predicting true-severe aortic stenosis and death in a prospective cohort of 186 patients with low-flow, low-gradient aortic stenosis.