Hypotension, distended neck veins, and muffled or distant heart tones in which the heartbeat is difficult to auscultate are hallmark signs of:

The upper respiratory tract begins at the nares and ends at the carina

Indicate whether the statement is true or false

Which of the following is NOT a criterion for implantation of CRT?

A) Severe heart failure with left ventricular EF < 35% B) Sinus rhythm C) Shortened PR intervals D) Wide QRS segment