Indian Journal of Anaesthesia  
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ORIGINAL ARTICLE
Year : 2019  |  Volume : 63  |  Issue : 6  |  Page : 475-484

Influence of time interval between coronary angiography to off-pump coronary artery bypass surgery on incidence of cardiac surgery associated acute kidney injury


1 Department of Cardiac Anesthesia, Ozone Anesthesia Group, Bengaluru, Karnataka, India
2 Department of Cardiac Anesthesia, Narayana Institute of Cardiac Sciences, Bengaluru, Karnataka, India
3 Department of Cardiac Anesthesia, Lissie Hospital, Kochi, Kerala, India
4 Department of Cardiac Surgery, United CIIGMA Hospital, Aurangabad, Maharashtra, India

Correspondence Address:
Dr. Deepak Prakash Borde
Ozone Anesthesia Group, First Floor, OPD Wing, United CIIGMA Hospital, Aurangabad, Maharashtra - 431 005
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/ija.IJA_770_18

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Background and Aims: Cardiac surgery associated acute kidney injury (CSA-AKI) is serious complication after cardiac surgery. The time interval between coronary angiography (CAG) to coronary artery bypass surgery (CABG) is proposed as modifiable risk factor for reduction of CSA-AKI. The aim of this study was to assess influence of time interval between CAG to off-pump CABG (OPCABG) on incidence of CSA-AKI. Methods: This was a retrospective observational study of 900 consecutive OPCABG patients who were classified into 2 groups based on time interval between CAG and OPCABG: ≤7 days or longer. Results: The incidence of CSA-AKI was 24% (214/900) by Kidney Disease: Improving Global Outcomes (KDIGO) definition. The incidence of CSA-AKI was not significantly different in two groups (22% in >7 days groupvs. 28% in ≤7 days group, P = 0.31). The factors independently associated with CSA-AKI were: Age (OR 1.04; P = 0.002), baseline creatinine (OR 1.99,; P = 0.03), moderate LV dysfunction (OR 1.64,; P = 0.007) and blood transfusion (OR 3.3,; P < 0.001), but not the time interval between CAG and OPCABG. The incidence of CSA-AKI was highest in patients with creatinine clearance (CC) <50 mL/min when OPCABG was performed ≤7 days of CAG (16/38; 42%, OR 2.7, 1.4-5.4; P = 0.005) compared to lowest incidence of CSA-AKI in patients with CC >50 mL/min and OPCABG performed >7 days of CAG (114/543; 21%). Conclusion: This study demonstrated that there is no increased incidence of CSA-AKI if OPCABG is performed ≤7 days of CAG; but we recommend to postpone OPCABG for seven days if CC is <50 mL/min and there is no urgent indication for OPCABG in order to reduce incidence of CSA-AKI.


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