Normal sinus rhythm (NSR) - answer - Rate: Atrial and ventricular rate of
*60-100 bpm*
- Rhythm: Atrial and ventricular rhythms are regular
- P wave: Present. There is one P wave before each QRS complex
- PR interval: 0.12-0.20 seconds
- QRS complex: 0.04-0.10 seconds
, Sinus Arrhythmia - answer - Rate: Atrial and ventricular rates of *60-100
bpm*
- Rhythm: Atrial and ventricular rhythms irregular
- P wave: Present. One P wave before each QRS complex
- PR interval: Normal. 0.12-0.20 seconds
- QRS complex: Normal 0.04-0.10 seconds
*A variant of normal sinus rhythm that can occur in healthy adults during
inspiration*
Sinus Bradycardia - answer - Rate: *Less than 60 bpm*
- Rhythm: Regular
- P wave: Present
- PR interval: Normal
- QRS complex: Normal
Brady info: - answer s/s:
●Sometimes there are none
●Can be normal in extremely athletic patients
●Nausea, dizziness, vomiting, diaphoresis, difficult to arouse
tx:
●Depends on symptoms
●Atropine - 0.5 mg IV every 3-5 minutes as needed
●If ineffective - may add Dopamine or epinephrine
●Pacing
○Transcutaneous
Permanent pacemaker
*If patient is symptomatic, we need to speed things up! *Symptoms can be
very similar to hypoglycemia - we are not meeting the metabolic needs of
the brain
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