Final answer:
Echocardiographic signs associated with constrictive pericarditis include A. B notch, B. Inferior vena cava plethora, and C. Railroad track sign. The correct answer is D. Septal bounce.
Step-by-step explanation:
The echocardiographic signs associated with constrictive pericarditis include A. B notch, B. Inferior vena cava plethora, and C. Railroad track sign. The correct answer is D. Septal bounce, which is not associated with constrictive pericarditis. The septal bounce is a characteristic finding in patients with hypertrophic cardiomyopathy, where the interventricular septum bounces towards the left ventricular cavity during systole.