Cardiology In Critical Care

Arrhythmia Recognition

Premature Atrial Contractions (PAC)

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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