Skip to main content

Table 2 Comparison of serum potassium and magnesium levels between patients with postoperative atrial fibrillation and those without

From: Predictors of postoperative atrial fibrillation after coronary artery bypass grafting: a prospective observational cohort study

Variables Negative (N = 82) Positive (N = 41) t P
K Adm (mmol/L) Mean ± SD 4.113 ± 0.6597 4.183 ± 0.7064 − 0.526 0.601
K 12 h (mmol/L) Mean ± SD 4.137 ± 0.5172 4.185 ± 0.6417 − 0.423 0.674
K 24 h (mmol/L) Mean ± SD 4.089 ± 0.4766 4.115 ± 0.6684 − 0.219 0.827
K 36 h (mmol/L) Mean ± SD 4.196 ± 0.4235 4.354 ± 0.7218 − 1.289 0.203
K 48 h (mmol/L) Mean ± SD 4.168 ± 0.4477 4.259 ± 0.7593 − 0.702 0.485
K 60 h (mmol/L) Mean ± SD 4.201 ± 0.4126 4.051 ± 0.6353 1.374 0.175
K 72 h (mmol/L) Mean ± SD 4.306 ± 0.2966 4.268 ± 0.6762 0.342 0.734
Mg Adm (mg/dL) Mean ± SD 2.3652 ± 0.5771 2.2737 ± 0.68948 0.732 0.467
Mg 24 h (mg/dL) Mean ± SD 2.3735 ± 0.54769 2.34 ± 0.59269 0.303 0.763
Mg 48 h (mg/dL) Mean ± SD 2.4832 ± 0.5218 2.3522 ± 0.53306 1.294 0.2
Mg 72 h (mg/dL) Mean ± SD 2.5156 ± 0.50198 2.4241 ± 0.4926 0.964 0.338
  1. K potassium, Mg magnesium, LA left atrium, Adm admission, SD standard deviation
\