Transesophageal Echocardiogram With Isoproterenol to Unmask Previously Occult Left Ventricular Outflow Tract Obstruction.

JACC Case Rep · 2025 · PMC12046884 · PMID 40185598

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may be significantno p-value reported

However, there may be significant limitations in the ability to diagnose labile gradients. 2 Reasons for limitations include poor acoustic windows, variability in the Valsalva maneuver, and contamination of the LVOT signal by the mitral regurgitation jet.

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