Figure 2.

(a) Adverse event-free survival in patients treated with loop diuretic therapy (LD; solid line) or without loop diuretic therapy (NLD; dashed line). There was no significant difference in event-free survival between the LD and NLD groups. (b) Adverse event-free survival in patients treated with loop diuretic therapy (LD) and elevated arginine vasopressin (AVP) levels (>6.5 pg/ml; dashed line) or low AVP levels (≤6.5 pg/ml; solid line). Patients with a high AVP level had a significantly lower event-free survival rate than patients with a low AVP level (P = 0.048). Adverse events included cardiovascular death, cardiopulmonary resuscitation due to ventricular tachycardia or fibrillation and hospitalization for heart failure.