|
| Study | Number of patients (AF/non-AF) | Country | Study design | Style of operation | OR (95% CI) | Definition of AF | NOS points |
|
| Lee et al. 2014 | 244/927 | Korea | Case-control | CABG | NA | Postoperative atrial fibrillation was defined as newly developed AF documented by electrocardiography (ECG) or continuous monitoring during the first 10 days after surgery | 8 |
|
| Mariscalco and Engström 2008 | 2155/6279 | Sweden | Case-control | Cardiac surgery | NA | The AF definition included arrhythmia successfully treated as well as those persistent at discharge. The arrhythmia, as defined by physician assessment, was on the basis of a telemetry strip or from a 12-lead electrocardiogram recording | 7 |
|
| Pivatto Jr. et al. 2014 | 114/234 | Brazil | Case-control | AVR | NA | AF consisted of any episode of supraventricular arrhythmia whose electrocardiography tracing showed “f” waves with varying morphology and amplitude as well as irregular ventricular rhythm | 4 |
|
| Attaran et al. 2011 | 3292/8843 | United Kingdom | Case-control | Cardiac surgery | NA | AF, confirmed on electrocardiogram (ECG) for any length of time | 8 |
|
| Girerd et al. 2009 | 433/2214 | Canada | Case-control | CABG | Hypertension: OR = 0.89 (0.68 to 1.16)
Preoperative drugs:
beta blockers: OR = 1.03 (0.77 to 1.39)
ACEI and/or ARBs: OR = 1.26 (0.98 to 1.61)
Calcium channel-blockers: OR = 1.18 (0.92 to 1.52) | AF was defined as any sustained episode recorded during the postoperative hospital stay and requiring medical and/or electrical cardioversion | 6 |
|
| Kinoshita et al. 2012 | 159/646 | Japan | Case-control | CABG | Hypertension: OR = 0.85 (0.58 to 1.18)
Preoperative drugs:
beta blockers: OR = 0.91 (0.61 to 1.41)
ACEI and/or ARBs: OR = 0.93 (0.60 to 1.44) | The endpoint was new-onset AF after surgery, which was diagnosed when there was an irregular cardiac rhythm without p waves lasting more than 60 min that required further administration of antiarrhythmics, cardioversion, or anticoagulation 8 therapy | 6 |
|
| Villareal et al. 2004 | 994/5481 | United States | Case-control | CABG | NA | Postoperative AF was defined by the documentation of AF of any duration at any time in the postoperative period on a physician assessment, on the basis of a rhythm strip or 12-lead electrocardiogram recording | 8 |
|
| Topal and Eren 2011 | 34/64 | Turkey | Case-control | CABG | NA | NA | 4 |
|
| Kinoshita et al. 2011 | 98/292 | Japan | Case-control | CABG | Hypertension: OR = 0.92 (0.59 to 1.43)
Preoperative drugs:
beta blockers: OR = 0.79 (0.44 to 1.28)
ACEI and/or ARBs: OR = 0.90 (0.59 to 1.38) | The endpoint was new-onset AF after operation, which was diagnosed when there was an irregular cardiac rhythm without p waves lasting more than 60 minutes | 6 |
|
| Saxena et al. 2012 | 5547/13950 | Australia | Case-control | CABG | NA | POAF was defined as evidence of new AF that required treatment by electrocardiography or continuous monitoring during the postoperative period | 7 |
|
| Lapar et al. 2014 | 9255/40009 | United States | Case-control | Cardiac surgery | NA | NA | 7 |
|
| Almassi et al. 2012 | 551/1552 | United States | Cohort | CABG | Hypertension: OR = 1.76 (1.23 to 2.50) | AF was defined as any abnormal atrially originated irregular rhythm lasting more than 30 minutes | 7 |
|
| Almassi et al. 1997 | 1143/2712 | United States | Cohort | Cardiac Surgery | NA | NA | 6 |
|
| Mariscalco et al. 2008 | 570/1262 | Italy | Cohort | CABG | NA | NA | 7 |
|
| Saxena et al. 2013 | 725/1340 | Australia | Cohort | AVR | NA | POAF was defined as evidence of new AF that required treatment and was discovered by electrocardiography or continuous monitoring during the postoperative period. | 8 |
|
| Leal et al. 2012 | 25/70 | Brazil | Case-control | CABG | NA | We defined AF occurrence as any AF episode requiring any type of medical treatment and/or lasting for more than 20 min within the hospital stay period | 6 |
|
| Choi et al. 2009 | 66/249 | Korea | Cohort | CABG | NA | NA | 4 |
|
| Nardi et al. 2012 | 61/159 | Italy | Cohort | CABG | Hypertension: OR = 1.71 (0.89 to 2.26)
Preoperative drugs:
beta blockers: OR = 0.91 (0.33 to 20.46)
ACEI and/or ARBs: OR = 0.85 (0.33 to 20.17) | POAF, defined as any evidence of new AF by electrocardiography or continuous ECG monitoring, lasting at least 30 seconds during the postoperative period in our hospital | 6 |
|
| Özlü et al. 2013 | 38/90 | Turkey | Cohort | CABG | NA | Presence of POAF lasting more than 5 min during hospitalization was detected by using continuous telemetry or 12-lead electrocardiography | 4 |
|
| Çetin et al. 2012 | 62/210 | Turkey | Cohort | CABG | Hypertension: OR = 1.638 (0.728 to 3.687)
Preoperative drugs:
calcium channel-blockers: OR = 1.929 (0.627 to 5.935) | POAF was defined as any episode of atrial fibrillation within the hospital stay after CABG surgery | 6 |
|
| Levy et al. 2012 | 28/30 | France | Cohort | AVR | NA | POAF combined paroxysmal and persistent AF. Paroxysmal AF was defined as self-terminating AF, usually within 48 hours. Persistent AF was defined as an AF episode that lasted longer than 7 days or required termination by cardioversion | 7 |
|
| Mariscalco et al. 2014 | 4561/12701 | United Kingdom | Case-control | Cardiac surgery | NA | POAF was documented on the basis of a rhythm strip or 12-lead ECG as previously described | 7 |
|
| Aytemir et al. 1999 | 19/34 | Turkey | Cohort | CABG | NA | NA | 5 |
|
| Nisanoglu et al. 2007 | 91/335 | Turkey | Case-control | CABG | Hypertension: OR = 1.12 (0.70 to 1.79) | AF was diagnosed if 12-lead ECG showed rapid oscillations or fibrillatory p waves that varied in size, shape, and timing, associated with irregular QRS complexes. For this study, postoperative | 7 |
|
| Straus et al. 2010 | 64/76 | Yugoslavia | Cohort | CABG | NA | NA | 2 |
|
