In medicine, tamponade is when something like blood or fluid puts pressure on the heart and stops it from working right.
Tamponade is a serious medical problem that needs quick help.
Examples:
The doctor said the patient had tamponade.
Tamponade can be very dangerous.
The tamponade made the heart stop.
The tamponade was like a big hand pushing on the heart.
The tamponade was so strong, it squeezed the heart like a lemon.
The doctor fixed the tamponade and the heart started working again.