Table 4

Obesity and Post-Ablation AF

First Author (Ref. #)Dates of StudyCountrySubjects (% Women)Mean Age (yrs)Body Mass Index (kg/m2)Body Mass Index Data ReportedAF Type (% Paroxysmal)Follow-Up (Months)Follow-Up FrequencyMethod of AF DetectionProcedures (n)Freedom From AF (%)Other Covariates in Model
Richter et al. (57)2002–2004Austria234 (28%)57Mean 26.6Continuous70.5Median 133-monthly for 1 yr, then 3–6 monthlyECG and Holter monitor at follow-ups, additional if symptomatic1.061.5 (at 6 months)Age, sex, AF type, left ventricular ejection fraction, left atrial size, structural heart disease, antiarrhythmic use, ablation technique, inducibility
Jongnarangsin et al. (58)2005–2006United States324 (24%)57266 (82%) overweight or obeseContinuous and categorical72.2Mean 73–6 monthlyECG at follow-ups, additional if symptomatic, event monitor if in sinus rhythm at 3-6 months1.060.1Age, sex, AF type, AF duration, left atrial size, left ventricular ejection fraction
Shah et al. (59)≤2008United States264 (29%)57Mean 30Continuous87.0Mean 341, 3, 6, and 12 months, then annuallyTranstelephonic ECG monitoring for 3 months, Holter at 3 months, and then annually1.191.3None
Letsas et al. (60)2004–2006Germany72 (19%)55Mean 26.1Continuous64.0Mean 131, 3, and 6 months then at mean of 12.5 monthsECG and Holter monitor at follow-ups, additional if symptomatic, and event monitor if no AF found1.061.1Age, sex, AF type, AF duration, hypertension, diabetes, dyslipidemia, structural heart disease, medication use, left ventricular dimensions, left ventricular function, white cell count, C-reactive protein, fibrinogen
Tang et al. (61)2005–2007China654 (29%)57Mean 25.4Continuous and categorical79.8Mean 161, 3, and 6 months, then 6-monthlyECG and Holter monitor at follow-ups, additional if symptomatic1.063.0AF type, AF duration, left atrial size, left ventricular end-diastolic diameter, hypertension, diabetes, lipid studies, ablation technique
Chang et al. (62)≤2008Taiwan282 (24%)52127 (45%) overweight or obeseContinuous and categorical76.6N/A1–3 monthlyHolter monitor or event recorder1.070.6Hypertension, diabetes, lipid studies
Wokhlu et al. (63)1999–2006United States774 (19%)54Mean 30.3Continuous55.2Mean 363 months and annuallyECG and Holter monitor, additional and event monitor if clinically indicated1.164.2Age, AF type, hypertension, diabetes, family history, left atrial size, ablation technique
Patel et al. (64)2005–2008United States518 (100%)59Mean 27Categorical46.0Mean 243, 6, 9, and 12 months, then 6-monthlyEvent monitoring for 5 months, Holter monitor at follow-ups1.068.5Age, hypertension, diabetes, coronary artery disease, left ventricular function, left atrial size, AF type, nonpulmonary vein triggers
Hwang et al. (65)2005–2007South Korea81 (15%)52Mean 25Continuous71.6Mean 9 months1, 2, 3, 6, and 9 monthsECG and Holter monitor1.063.0 (at 9 months)None
Wong et al. (6)2008–2009Australia110 (23%)58Mean 27Continuous37.3Mean 213, 6, 9, 12, 18, and 24 months, then annuallyECG and Holter monitor1.488.2Age, sex, hypertension, diabetes, ischemic heart disease, left ventricular dysfunction, valvulopathy, obstructive sleep apnea, left atrial volume
Winkle et al. (66)2003–2009United States423 (26%)62Mean 29Continuous0.0N/A3 and 12 monthsTranstelephonic ECG monitor for 3 months, then ECG and Holter monitor1.3N/AAge, left atrial size, AF duration, sex, antiarrhythmic use, coronary artery disease, hypertension, diabetes
Chao et al. (67)≤2011Taiwan232 (28%)53Mean 25Continuous100.0Mean 251–3 monthlyHolter and/or event monitor1.084.1Age, hypertension, left atrial size, left ventricular ejection fraction, left atrial total activation time, left atrial voltage, renal function
Mohanty et al. (68)≤2011United States1,496 (26%)63Mean 29Categorical29.3Mean 213 ,6, 9, and 12 monthsECG and Holter monitor1.066.0Hypertension, diabetes, dyslipidemia, metabolic syndrome
Kang et al. (69)2006–2009South Korea94 (20%)59Mean 25.0Categorical0.0Mean 201, 3, 6, and 12 monthsECG and Holter monitor1.066.0Age, sex, AF type, AF duration, hypertension, diabetes, left atrial diameter, left ventricular ejection fraction
Letsas et al. (70)≤2011Germany226 (19%)56Mean 26.6Continuous59.3Mean 143 and 6 months, then at mean of 14 monthsHolter monitor1.058.0None
Ejima et al. (71)≤2011Japan80 (19%)58Mean 24Continuous81.3Median 171, 2, 3, 6, 9, and 12 months, then 6-monthlyECG and Holter monitor1.190.0None

Abbreviations as in Table 1.