During 1 invasive study of patients with AVNRT and AVRT, both arrhythmias decreased arterial pressure and increased left atrial pressure, but simulation of SVT mecha- nism by timing the pacing of the atria and ventricles showed significantly higher left atrial pressure in simulated AVNRT than in simulatedAVRT.62 Polyuria is particularly common with AVNRT and is related to higher right atrial pressures and ele- vated levels of atrial natriuretic protein in patients with AVNRT compared with patients who have AVRT or atrial flutter.63 Table 2. Associated Guidelines and Statements Title Organization Publication Year (Reference) Guidelines Atrial fibrillation AHA/ACC/HRS 201410 Stable ischemic heart disease ACC/AHA/ACP/ AATS/ PCNA/ SCAI/STS Valvular heart disease AHA/ACC 201414 Assessment of cardiovascular risk Heart failure ACC/AHA 201316 Antithrombotic therapy for valvular heart disease Atrial fibrillation ESC 201218 Device-based therapy ACC/AHA/HRS 201220 Atrial fibrillation CCS 201421 Hypertrophic cardiomyopathy ACC/AHA 201123 Secondary prevention and risk reduction therapy for patients with coronary and other atherosclerotic vascular disease Adult congenital heart disease * Seventh Report of the Joint National Committee on Prevention, Detection, Evaluation, and Treatment of High Blood Pressure (JNC VII) Statements Catheter ablation in children and patients with congenital heart disease Postural tachycardia syndrome, inappropriate sinus tachycardia, and vasovagal syncope Arrhythmias in adult congenital heart disease Catheter and surgical ablation of atrial fibrillation CPR and emergency cardiovascular care * *A revision to the current document is being prepared, with publication expected in late 2015. 