Incidence and Clinical Outcome of Acute Kidney Injury in Patients with Sepsis Admitted in Multi-Disciplinary Unit in a Tertiary Care Center

Abstract

BACKGROUND A rising trend has been reported in Acute Kidney Injury (AKI) in both developed and developing countries and there is an independent association with increased morbidity and mortality with sepsis being the most common predisposing factor. Sepsis and cardiovascular causes resulted in a high incidence of AKI, and older age was also an important risk factor. Our study aims to determine the incidence, outcome and comorbidities associated with AKI in sepsis patients. Sepsis is a serious medical condition characterized by a whole-body inflammatory state (systemic inflammatory-response syndrome) and the presence of a known or suspected infection that has severe consequences, including multiple organ failure. METHODS We did a retrospective observational study in 497 sepsis patients admitted in MDICU. Acute kidney injury in these patients was identified and studied using RIFLE criteria between June 2016 and May 2017. RESULTS A total of 497 patients were studied. Mean age was 60 yrs. 59.8% were males and 40.2% were females. 279 have acute kidney injury; so, incidence of AKI in our study is 56.1%. Significant comorbidities associated with AKI are diabetes mellitus 61.6% (p= 0.001), hypertension 76.7% (p= 0.001), CKD 43.3% (p= 0.001), CAD 28.3% (p 0.020). Out of 279 AKI cases, 167 (59.9%) were under RISK, 94 (33.7%) were under kidney injury, 18 (6.5%) under renal failure. 246 (88.1%) received conservative management and 33 (11.9%) received renal replacement therapy. Out of 33 patients receiving RRT, 18 patients (54.5%) expired during the study period (p value 0.011). 14 patients (50%) of those who received early RRT died and 14 patients (50%) survived, whereas in late RRT 4 (80%) died and 1 patient (20%) survived. There is no statistically significant (p= 0.25) association between mortality and early or late initiation of RRT. CONCLUSIONS As the incidence of AKI is 56.1% and there is significant association between sepsis patients with AKI and comorbidity, high RIFLE score and mortality, RRT and mortality. So Specific goals for reducing incidence and mortality of acute kidney injury has to be formulated and uniform guidelines regarding initiating RRT should be formed.