Normal Sinus Rhythm - ANSWER * Rate: 60-100 bpm
* Rhythm: Normal
* P Waves: Uniform and Upright, One before each QRS
* PR Interval: 0.12-0.20
* QRS:
Normal Sinus Rhythm - ANSWER * Rate: 60-100 bpm
* Rhythm: Normal
* P Waves: Uniform and Upright, One before each QRS
* PR Interval: 0.12-0.20
* QRS: <0.10 secs
Sinus Bradycardia - ANSWER * Rate: <60 bpm
* Rhythm: Regular
* P Waves: Uniform and Upright, One before each QRS
* PR Interval: 0.12-0.20
* QRS: 0.10
* Cause: Carotid massage, hypothermia, Valsalva maneuver. May lead to decreased BP/CO Syncope, CHF, Shock. May be normal for athletes.
Sinus Tachycardia - ANSWER * Rate: 100-160 bpm
* Rhythm: Regular
* P Waves: Uniform and Upright, One before each QRS
* PR Interval: 0.12-0.20 seconds
* QRS: <0.10 seconds
* Cause: Fever, hypoxemia, decreased BP, hypovolemia, pain, sepsis, heart failure, bronchodilators, other meds
Atrial Flutter - ANSWER * Rate: 60-100 bpm, may seem faster or slower
* Rhythm: Irregular
* P Waves: Uniform and Upright, one before each QRS
* PR Interval: 0.12-0.20 sec
* QRS: <0.10
** Common with pulmonary disease, may return to normal or go to A-Fib, increased risk for embolism
Atrial Fibrillation - ANSWER * Rate: Atrial rate >400 bpm, ventricular rate varies
* Rhythm: Atrial and ventricular very irregular
* P Waves: no identifiable P waves
* PR Interval: None
* QRS: Usually <0.10 secs
Ventricular Tachycardia - ANSWER * Rate: Atrial rate not discernable, ventricular rate: 100-250 bpm
Rhythm: Atrial not discernable, ventricular essentially regular
P Waves: May be present or absent of present they have no set relationship to the QRS complexes appearing between the QRS at rate different from that of VT
PR Interval: None
QRS: Usually <0.12 seconds. Often difficult to differentiate between QRS and T Waves
