Nursebob’s MICU/CCU Survival Guide
Cardiology in Critical Care
Premature Artial Contractions (PAC)
10.10.06

Premature Atrial Contractions

Heart
Rate

Rhythm

P Wave

PR Interval
(in seconds)

QRS
(in seconds)

N/A

Irregular

Premature & abnormal or hidden

<.20

< .12

Premature Atrial Contractions / Paired PAC's Occur in Two's

Heart
Rate

Rhythm

P Wave

PR Interval
(in seconds)

QRS
(in seconds)

N/A

Irregular

Premature & abnormal or hidden

<.20

< .12

 

Premature Atrial Contractions / Atrial Bigeminy: Every Other Beat Is a PAC

 

Heart
Rate

Rhythm

P Wave

PR Interval
(in seconds)

QRS
(in seconds)

N/A

Irregular

Premature & abnormal or hidden

<.20

< .12

 

There have been Visitors to this website.

Return to Nurse Bob'sİ Page