Author Question: In the limb leads, the ST segment is normally isoelectric, or less than 1 mm above or below the ... (Read 27 times)

Starlight · **on:** Jun 25, 2018

In the limb leads, the ST segment is normally isoelectric, or less than 1 mm above or below the isoelectric line.

Indicate whether the statement is true or false

Question 2

Complete occlusion of the _____ coronary artery, also referred to as the widow maker, usually results in sudden death.

a. right
b. left main
c. circumflex
d. left anterior descending

cloud · **Reply #1 on:** Jun 25, 2018

Answer to Question 1

T
The normal ST segment begins at the isoelectric line, extends from the end of the S wave, and curves gradually upward to the beginning of the T wave. In the limb leads, the normal ST segment is isoelectric (flat) but may normally be slightly elevated or depressed (usually by less than 1 mm).

Answer to Question 2

B
Complete occlusion of the left main coronary artery, also referred to as the widow maker, usually results in sudden death.