Author Question: Sometimes, when a premature atrial complex (PAC) occurs very prematurely and close to the T wave of ... (Read 91 times)

HCHenry · **on:** Jun 25, 2018

Sometimes, when a premature atrial complex (PAC) occurs very prematurely and close to the T wave of the preceding beat, only a P wave may be seen with no QRS after it (appearing as a pause). This type of PAC is termed a(n) _____ PAC.

Fill in the blanks with correct word

Question 2

Complete the following ECG criteria for atrial tachycardia:

Rhythm ___________________ _______
Rate ___________________ _______
P waves ___________________ _______
PR interval ___________________ _______
QRS duration ___________________ _______

Fill in the blanks with correct word

zogaridan · **Reply #1 on:** Jun 25, 2018

Answer to Question 1

nonconducted or blocked

Answer to Question 2

Rhythm Regular.
Rate 100 to 250 beats/min.
P waves One P wave precedes each QRS complex in lead II; P waves differ in shape from sinus P waves; an isoelectric baseline is usually present between P waves; if the atrial rhythm originates in the low portion of the atrium, P waves will be negative in lead II. With rapid rates, it is difficult to distinguish P waves from T waves.
PR interval May be shorter or longer than normal.
QRS duration 0.11 seconds or less unless abnormally conducted.