Early readmissions after isolated coronary artery bypass grafting

Patient and hospital factors associated with 30-day readmissions after coronary artery bypass graft (CABG) surgery: a systematic review and meta-analysis

“…Forty studies [ 7 , 8 , 11 – 14 , 20 – 26 , 28 – 37 , 39 – 44 , 46 – 49 , 52 , 54 , 58 , 59 , 62 , 64 , 65 ] (75% of all included studies) were from the USA. Most studies [ 7 , 8 , 11 – 14 , 20 , 21 , 25 , 27 , 32 , 33 , 35 – 37 , 39 – 42 , 44 , 46 – 49 , 52 , 58 , 59 , 61 , 63 , 65 , 66 ] ( n = 31) were based on administrative data aggregated across multiple sites and 22 studies [ 22 – 24 , 26 , 28 – 31 , 34 , 38 , 43 , 45 , 50 , 51 , 53 – 57 , 60 , 62 , 64 ] used medical records from either a single center or multiple centers. The included studies varied widely in sample size (range: 110 to 1,116,991).…”

“…In studies where history of comorbidities was reported, diabetes (range: 12 to 69%) and hypertension (range: 37 to 95%) were relatively common in patients undergoing CABG. While most studies included patients, who had either isolated or combined CABG procedures, 22 studies [ 8 , 13 , 26 , 29 , 31 , 33 , 35 – 37 , 39 , 40 , 45 – 48 , 50 , 51 , 54 , 56 , 58 , 59 , 62 ] included only those who underwent isolated CABG procedures. The included studies varied widely (range: 15 to 100%) in the proportion of elective procedures (Table 1 ).…”

“…Twenty-three studies [ 8 , 13 , 28 , 31 , 35 , 36 , 39 – 41 , 43 , 46 , 48 , 50 , 52 , 54 , 55 , 57 , 58 , 60 , 62 – 64 , 66 ] reported the causes of 30-day readmission after CABG (Fig. 4 ).…”

“…The estimated pooled OR for per 10-year increase in age from 11 studies [ 24 , 25 , 28 , 34 , 35 , 39 , 47 , 59 – 61 ] was 1.12 (1.04–1.20). Female sex (pooled OR from 20 studies [ 11 , 13 , 25 , 26 , 28 , 33 – 36 , 39 , 40 , 47 – 50 , 58 , 59 , 61 – 63 ]: 1.29 [1.25–1.34]) and non-White race (pooled OR from 12 studies [ 8 , 11 , 13 , 28 , 34 , 35 , 37 , 39 , 40 , 47 , 48 ]: 1.15 [1.10–1.21]) were associated with higher risk of readmissions within 30 days after CABG. Compared to those with private insurance, those with Medicare or Medicaid in the US were more likely to be readmitted (pooled OR from 11 studies [ 8 , 11 , 32 – 36 , 40 , 48 , 58 ]: 1.39 [1.27–1.51]) (Fig.…”

“…For meta-analyses for the associations of 12 comorbid conditions with readmission rate after CABG (Fig. 5 ), data came from 22 studies for diabetes [ 8 , 13 , 24 – 26 , 28 , 31 , 34 – 36 , 39 , 40 , 46 – 48 , 50 , 54 , 58 , 59 , 62 , 63 ], 11 studies for hypertension [ 8 , 13 , 35 , 36 , 47 , 48 , 54 , 59 , 62 , 63 ], 14 studies for heart failure [ 13 , 24 , 34 – 36 , 39 , 40 , 47 , 48 , 50 , 58 , 59 , 62 , 63 ], 12 studies for previous myocardial infarction (MI) [ 8 , 13 , 24 – 26 , 28 , 34 , 39 , 48 , 54 , 62 , 63 ], 6 studies for atrial fibrillation [ 8 , 13 , 26 , 36 , 47 , 48 ], 6 studies for stroke [ 13 , 40 , 47 , 50 , 54 , 59 ], 14 studies for peripheral vascular disease [ …”