Sinus Bradycardia 

Sinus Bradycardia

Beating of the sinus node at a rate below 60 beats/ min. Mosby (2009-02-11).


Characteristics

Rate Less than 60 BPM
Rhythm Regular
P-Waves Uniform in appearance; upright in lead 2. Proceeds each QRS.
PR Interval 0.12 sec-0.20 sec (3-5 boxes) and constant from beat to beat
QRS Duration 0.11 sec (Almost 3 boxes) or less


MEDS

Atropine 0.5-1mg SIVP over 1-2 min (Repeat every 3-5 min. 3.0mg max)


Treatment No Symptoms

No Treatment


Symptomatic

Monitor Diagnostic 12 lead
Oxygen 15 LPM NR Mask
IV 18g
Atropine 0.5-1mg SIVP over 1-2 min (Repeat every 3-5 min. 3.0mg max)


Noticeable by: 

Looks much like normal sinus rhythm except that it is slower. 

© Matt Dillard 2012