Take a look at an echocardiogram on the left. What is your impression?
This color-M mode image was obtained with a Doppler cursor in the mid-ventricle in a patient with mid-obstructive hypertrophic cardiomyopathy.
As you may know if you are a sonographer, a flow in the left ventricular cavity moves toward the apex during early diastole due to an apical suction.
In this case, however, the opposite phenomenon is shown; note a blue signal (white arrow), which is a blood flow from the apex toward the base of the left ventricle during early diastole or isovolumic relaxation time.
This situation is called diastolic paradoxic jet flow. This unique echocardiographic finding indicates the presence of a high-pressure apical chamber and has been reported to be associated with adverse outcomes.
For more information, you can access here.