What is cardiac catheterization? Cardiac catheterization (cardiac cath or heart cath) is a procedure to examine how well your heart is working. A thin, hollow tube called a catheter is inserted into a large blood vessel that leads to your heart. View an illustration of cardiac catheterization.
A Troll is a magical creature of prodigious strength and immense stupidity.
A troll usually flames threads without staying on topic, unlike a Flamer who flames a thread because he/she disagrees with the content of the thread. 1c. Noun A member of an internet forum who continually harangues and harasses others.