Paroxysmal Atrial Tachycardia (PAT): Symptoms, Diagnosis, and Treatment
PAT is an abrupt, episodic rapid heart rate (140–240 bpm) originating from an ectopic atrial focus.
Symptoms
- Sudden palpitations, racing pulse
- Dizziness, chest discomfort, dyspnea, syncope
Diagnosis
ECG or Holter monitor captures the episodic tachycardia with narrow QRS and abnormal P waves.
Treatment
- Acute: Vagal maneuvers, IV adenosine or beta-blockers/calcium channel blockers.
- Chronic prevention: Oral beta-blockers, calcium channel blockers, or antiarrhythmics (e.g., flecainide).
- Catheter ablation for refractory or frequent episodes.
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