Factors associated with acute kidney injury recovery in a tertiary hospital in Ghana: a prospective study

Causes and outcome of acute kidney injury amongst adults patients in two hospitals of different category in Cameroon; a 5 year retrospective comparative study

Background

Acute kidney injury (AKI) is an under-recognized disorder, which is associated with a high risk for mortality, development of chronic kidney disease (CKD).

Objective

We sought to describe and compare the causes and outcomes of AKI amongst adult patients in Douala general hospital (DGH) and Buea regional hospital (BRH).

Methods

A hospital-based retrospective cohort analytic study was carried from February to April 2021. Convenience sampling was used. We included Patient’s files admitted from January 2016 to December 2020 aged > 18 years, with AKI diagnosed by a nephrologist and recorded values of serum creatinine (sCr) on admission and discharge. Data were analysed using SPSSv26. Chi-square, fisher, median mood’s and regression logistic test were used, values were considered significant at p < 0.05.

Results

Of the 349 files included 217 was from DGH and 132 from BRH. Community acquired AKI were more present in BRH 87.12% (n = 115) than DGH 84.79% (n = 184) (p = 0.001). Stage III AKI was the most common presentation in both hospital. Pre-renal AKI was more common (p = 0.013) in DGH (65.44%, n = 142) than BRH (46.97%, n = 62). Sepsis and volume depletion were more prevalent in urban area with (64.51 and 30.41% vs. 46.21 and 25.75%) while severe malaria was more present in Semi-urban area (8.33% vs. 1.84%, p = 0.011). Complete and partial renal recovery was 64.97% (n = 141) in DGH and 69.69% (n = 92) in BRH (p = 0.061). More patients had dialysis in BRH 73.07% (n = 57) than in DGH 23.33% (n = 21). More patient died in DGH 33.18% (n = 72) died than in BRH 19.70% (n = 26) (p = 0.007). Stage III was significantly associated with non-renal recovery in both DGH (p = 0.036) and BRH (p = 0.009) while acute tubular necrosis was associated with non-renal outcome in DGH (p = 0.037).

Conclusions

AKI was mainly due to sepsis, volume depletion and nephrotoxicity. Complete and partial recovery of kidney function were high in both settings. Patient outcome was poorer in DGH.

Recovery of Renal Function in Clinical Patients with Acute Kidney Injury: Impact on Mortality

Objective: To assess the different renal function recovery patterns and their impact on the mortality of non-critical patients with hospital-acquired Acute Kidney Injury. Design: A prospective cohort study was conducted from January 2017 to December 2019. Methods: The patients included were those with Acute Kidney Injury acquired during their hospitalization, identified from Kidney Disease: Improving Global Outcomes (KDIGO). Renal function recovery was calculated through the serum creatinine ratio in relation to baseline creatinine at the renal function evaluation moment. A descriptive analysis of the results was performed, and the Backward method was adopted for the multivariate analysis. Results: One-thousand five-hundred and forty-six patients were evaluated in the medical clinic and 202 (13.06%) were identified to have Acute Kidney Injury; among them, renal function recovery varied over the six months of follow-up with greater expressiveness in the second and third months (from 61.02% to 62.79%). Recovery was a protective factor against in-hospital death in the first (OR 0.24; 95% CI 0.09–0.61; p-value = 0.038) and sixth month of follow-up (OR 0.24; 95% CI 0.09–0.61; p-value = 0.003). Conclusions: The incidence of renal function recovery varied throughout the six months of follow-up and reached progressively high levels from the second to the third months. Renal recovery was a protective factor against mortality during the follow-up period.