Table 2: Determinants of Spontaneous Conversion.
| Author, Country | Determinants of SCV |
|---|---|
| Galve et al. 1996,[21] Spain | Absence of congestive heart failure and history of SVT, smaller left atrial size |
| Boriani et al. 1997,[16] Italy | Patients without heart disease (defined as the absence of cardiac abnormalities other than AF)* |
| Cotter et al. 1999,[7] Israel | (Univariable) left atrial size <45 mm, EF >45% and no significant mitral regurgitation |
| Non-RCT | |
| Danias et al. 1998,[3] US | Duration of AF <24 h |
| Dell’Orfano et al. 1999,[25] US | Duration of AF <48 h |
| Mattioli et al. 2000,[28] Italy | Onset AF during sleep, elevated ANP |
| Mattioli et al. 2005,[27] Italy | Patients with acute stress showed the highest probability of SCV followed by patients with Type A behaviour |
| Geleris et al. 2001,[6] Greece | Left atrial dimension (univariable) |
| Perrea et al. 2011,[12] Greece | [HR/systolic blood pressure] + 0.1 × number of past AF episodes |
| Lindberg et al. 2012,[5] Denmark | Duration of AF <48 h |
| Choudhary et al. 2013,[19] Sweden | AFR <350 fpm, presence of IHD and first-ever episode of AF |
*Boriani et al. reported in the same population divided by age, patients with age <60 years as predictor for SCV.35 We excluded studies that did not report on determinants of SCV. AFR = atrial fibrillatory rate; ANP = atrial natriuretic peptide; EF = ejection fraction; fpm = fibrillations per minute; HR = heart rate; IHD = ischaemic heart disease; SCV = spontaneous conversion; SVT = supraventricular tachycardia (previous atrial arrhythmias).