Age
Item
age between 18 and 80 years
boolean
C0001779 (UMLS CUI [1])
Persistent atrial fibrillation
Item
symptomatic persistent (> 7 days lasting) atrial fibrillation
boolean
C2585653 (UMLS CUI [1,1])
C0231220 (UMLS CUI [1,2])
Unsuccessful cardioversion or atrial fibrillation relapse
Item
at least one unsuccessful cardioversion or atrial fibrillation relapse in the first 3 months after cardioversion despite antiarrhythmic drug therapy
boolean
C0741282 (UMLS CUI [1])
C0199550 (UMLS CUI [2,1])
C1272705 (UMLS CUI [2,2])
Oral anticoagulation
Item
oral anticoagulation (> 4 weeks prior to ablation)
boolean
C0354604 (UMLS CUI [1])
Valvular heart disease
Item
moderate to severe valvular heart disease
boolean
C0018824 (UMLS CUI [1])
congenital heart disease
Item
congenital heart disease
boolean
C0152021 (UMLS CUI [1])
Left ventricular ejection fraction
Item
lv-ef < 35%
boolean
C0428772 (UMLS CUI [1])
Cause for atrial fibrillation
Item
reversible cause for atrial fibrillation (e.g., hyperthyreosis)
boolean
C0004238 (UMLS CUI [1,1])
C0015127 (UMLS CUI [1,2])
C0205343 (UMLS CUI [1,3])
left atrial ablation or maze operation
Item
prior left atrial ablation or maze operation
boolean
C1996976 (UMLS CUI [1])
C0397414 (UMLS CUI [2])
left atrial thrombus
Item
left atrial thrombus
boolean
C3532827 (UMLS CUI [1])