Table 3

Obesity and Post-Operative AF

First Author (Ref. #)Dates of StudyCountrySubjects (% Women)Mean Age (yrs)Body Mass Index (kg/m2)Body Mass Index Data ReportedPost-Operative Cases of AF (%)AF DiagnosisOther Covariates in Model
Moulton et al. (46)1991–1993United States2,299 (35%)62567 (25%) obeseCategorical833 (36.2%)N/AAge, sex, ethnicity, procedure type, NYHA functional class, myocardial infarction, diabetes, chronic kidney disease, hypertension, chronic obstructive pulmonary disease, stroke, left ventricular ejection fraction, operation urgency, cardiac index, bypass time, cross-clamp time
Engelman et al. (47)1993–1997United States5,168 (32%)Median 67Median 26.6Categorical1,518 (29%)N/AAge, sex, ejection fraction, NYHA functional class, previous cardiac operation, diabetes, vascular disease, hypertension, chronic kidney disease, heart failure, myocardial infarction, chronic obstructive pulmonary disease, smoking, operation urgency, internal thoracic artery use, operation type
Brandt et al. (48)1998Germany500 (20%)64100 (20%) obeseCategorical187 (37.4%)N/ANone
Reeves et al. (10)1996–2001United Kingdom4,372 (21%)Mostly 45–653,078 (70%) overweight or obeseCategorical675 (15.4%)Continuous monitoringAge, sex, CCS class, NYHA functional class, unstable angina, myocardial infarction, diabetes, hypercholesterolemia, hypertension, smoking, chronic kidney disease, chronic obstructive pulmonary disease, stroke, angiography findings, peripheral vascular disease, Parsonnet score, ejection fraction, operation urgency, graft number, off-pump surgery
Zacharias et al. (49)1994–2004United States8,051 (33%)653,164 (39%) obeseContinuous and categorical1,810 (22.5%)ECG, telemetry or physician findingAge, sex, ethnicity, smoking, diabetes, chronic kidney disease, hypertension, chronic obstructive pulmonary disease, peripheral vascular disease, stroke, myocardial infarction, congestive heart failure, angina, angiography findings, ejection fraction, medications, operation variables
Yap et al. (50)2001–2006Australia4,053 (29%)651,225 (30%) obeseCategorical1,425 (35.1%)Continuous monitoringAge, sex, diabetes, hypercholesterolemia, chronic kidney disease, hypertension, stroke, peripheral vascular disease, 1 chronic obstructive pulmonary disease, heart failure, pulmonary artery pressure, operation urgency, and operation time
Girerd et al. (51)2000–2007Canada2,214 (0%)56Mean 28.7Categorical433 (19.6%)Continuous monitoring and ECGAge, stroke, chronic obstructive pulmonary disease, diabetes, lipid studies, waist circumference, angiography findings, ejection fraction, medication use, operative variables
Alam et al. (52)1995–2010United States13,115 (25%)634,619 (35%) obeseCategorical3,702 (28.2%)N/AAge, sex, hypertension, diabetes, heart failure, NYHA functional class, myocardial infarction, chronic kidney disease, pulmonary disease, peripheral arterial disease, stroke, pre-operative hypotension, medication use, angiography findings, graft number, use of internal mammary artery, operation variables
Bramer et al. (53)2003–2009the Netherlands9,348 (27%)65Mean 27Continuous2,517 (26.9%)Continuous monitoring or ECGAge, chronic obstructive pulmonary disease, peripheral vascular disease, stroke, myocardial infarction, ejection fraction, creatinine, operation type, operation variables, transfusion requirements, reoperation
Melduni et al. (54)2000–2005United States351 (33%)67Mean 28Continuous135 (38.4%)Continuous monitoring or ECGAge, hypertension, mitral regurgitation, diastolic dysfunction, surgery type, perfusion time
Sun et al. (55)2000–2009United States12,367 (29%)∼659,437 (76%)Categorical3,462 (28.0%)Continuous monitoringAge, sex, ethnicity, obstructive sleep apnea, hypertension, diabetes, family history of coronary artery disease, myocardial infarction, heart failure, ejection fraction, stroke, chronic kidney disease, operation urgency, smoking, hypercholesterolemia, medications, graft number
Tadic et al. (56)2006–2008Serbia322 (28%)60Mean 26.2Categorical72 (22.4%)Continuous monitoring or ECGAge, sex, hypertension, diabetes, hypercholesterolemia, smoking, medications, left atrial diameter, left ventricular kinetic disturbances, triple vessel disease, leukocytosis

CCS = Canadian Cardiovascular Society; N/A = not available; other abbreviations as in Tables 1 and 2.