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Severe dynamic obstruction of the left ventricular outflow tract induced by dobutamine
F J Roldán1, J Vargas-Barrón, N Espinola-Zavaleta
1Department of Echocardiography, Instituto Nacional de Cardiología "Ignacio Chávez," Juan Badiano No.1, Colonia Sección XVI, Tlalpan, 14080 México, D.F., Mexico.
Echocardiography (Mount Kisco, N.Y.)
|September 9, 2000
Insights
A 63-year-old man experienced a significant subaortic gradient during a dobutamine stress echocardiogram. This finding highlights potential dynamic left ventricular outflow tract obstruction during pharmacological stress testing.
Area of Science:
- Cardiology
- Diagnostic Imaging
- Pharmacology
Background:
- Subaortic stenosis can cause significant hemodynamic compromise.
- Pharmacological stress echocardiography is a key tool for assessing cardiac function under stress.
Observation:
- A 63-year-old male patient underwent dobutamine stress echocardiography.
- The study aimed to evaluate cardiac function and detect potential ischemia or obstruction.
Findings:
- The patient developed a substantial subaortic gradient of 182 mmHg.
- This indicates significant dynamic left ventricular outflow tract obstruction during dobutamine infusion.
Implications:
- This case underscores the importance of recognizing dynamic subaortic obstruction during dobutamine stress echocardiography.
- Such findings may necessitate further investigation and management strategies for outflow tract obstruction.
Abstract:
We present the case of a 63-year-old man who developed a subaortic gradient of 182 mmHg during an echocardiographic pharmacological stress study with dobutamine.