Acute Kidney Injury Network Criteria as a Predictor of Hospital Mortality in Cirrhotic Patients With Ascites

Background: The incidence of acute kidney injury (AKI) in patients with COVID-19 and its association with mortality and disease severity is understudied in the Canadian population. Objective: To determine the incidence of AKI in a cohort of patients with COVID-19 admitted to medicine and intensive care unit (ICU) wards, its association with in-hospital mortality, and disease severity. Our aim was to stratify these outcomes by out-of-hospital AKI and in-hospital AKI. Design: Retrospective cohort study from a registry of patients with COVID-19. Setting: Three community and 3 academic hospitals. Patients: A total of 815 patients admitted to hospital with COVID-19 between March 4, 2020, and April 23, 2021. Measurements: Stage of AKI, ICU admission, mechanical ventilation, and in-hospital mortality. Methods: We classified AKI by comparing highest to lowest recorded serum creatinine in hospital and staged AKI based on the Kidney Disease: Improving Global Outcomes (KDIGO) system. We calculated the unadjusted and adjusted odds ratio for the stage of AKI and the outcomes of ICU admission, mechanical ventilation, and in-hospital mortality. Results: Of the 815 patients registered, 439 (53.9%) developed AKI, 253 (57.6%) presented with AKI, and 186 (42.4%) developed AKI in-hospital. The odds of ICU admission, mechanical ventilation, and death increased as the AKI stage worsened. Stage 3 AKI that occurred during hospitalization increased the odds of death (odds ratio [OR] = 7.87 [4.35, 14.23]). Stage 3 AKI that occurred prior to hospitalization carried an increased odds of death (OR = 5.28 [2.60, 10.73]). Limitations: Observational study with small sample size limits precision of estimates. Lack of nonhospitalized patients with COVID-19 and hospitalized patients without COVID-19 as controls limits causal inferences. Conclusions: Acute kidney injury, whether it occurs prior to or after hospitalization, is associated with a high risk of poor outcomes in patients with COVID-19. Routine assessment of kidney function in patients with COVID-19 may improve risk stratification. Trial registration: The study was not registered on a publicly accessible registry because it did not involve any health care intervention on human participants.

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Serum lactate dehydrogenase level is associated with in-hospital mortality in critically Ill patients with acute kidney injury

International Urology and Nephrology ◽

10.1007/s11255-021-02792-z ◽

2021 ◽

Author(s):

Dan Zhang ◽

Lin Shi

Keyword(s):

Acute Kidney Injury ◽

Lactate Dehydrogenase ◽

Hospital Mortality ◽

Critically Ill ◽

Critically Ill Patients ◽

Kidney Injury ◽

Lactate Dehydrogenase Level ◽

Serum Lactate ◽

Serum Lactate Dehydrogenase ◽

Serum Lactate Dehydrogenase Level

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Assessment of acute kidney injury risk using a machine-learning guided generalized structural equation model: a cohort study

BMC Nephrology ◽

10.1186/s12882-021-02238-9 ◽

2021 ◽

Vol 22 (1) ◽

Author(s):

Wen En Joseph Wong ◽

Siew Pang Chan ◽

Juin Keith Yong ◽

Yen Yu Sherlyn Tham ◽

Jie Rui Gerald Lim ◽

...

Keyword(s):

Acute Kidney Injury ◽

High Risk ◽

Hospital Mortality ◽

Structural Equation Model ◽

Structural Equation ◽

Injury Risk ◽

Kidney Injury ◽

Equation Model ◽

Surgical Icu ◽

One Year

Abstract Background Acute kidney injury is common in the surgical intensive care unit (ICU). It is associated with poor patient outcomes and high healthcare resource usage. This study’s primary objective is to help identify which ICU patients are at high risk for acute kidney injury. Its secondary objective is to examine the effect of acute kidney injury on a patient’s prognosis during and after the ICU admission. Methods A retrospective cohort of patients admitted to a Singaporean surgical ICU between 2015 to 2017 was collated. Patients undergoing chronic dialysis were excluded. The outcomes were occurrence of ICU acute kidney injury, hospital mortality and one-year mortality. Predictors were identified using decision tree algorithms. Confirmatory analysis was performed using a generalized structural equation model. Results A total of 201/940 (21.4%) patients suffered acute kidney injury in the ICU. Low ICU haemoglobin levels, low ICU bicarbonate levels, ICU sepsis, low pre-ICU estimated glomerular filtration rate (eGFR) and congestive heart failure was associated with the occurrence of ICU acute kidney injury. Acute kidney injury, together with old age (> 70 years), and low pre-ICU eGFR, was associated with hospital mortality, and one-year mortality. ICU haemoglobin level was discretized into 3 risk categories for acute kidney injury: high risk (haemoglobin ≤9.7 g/dL), moderate risk (haemoglobin between 9.8–12 g/dL), and low risk (haemoglobin > 12 g/dL). Conclusion The occurrence of acute kidney injury is common in the surgical ICU. It is associated with a higher risk for hospital and one-year mortality. These results, in particular the identified haemoglobin thresholds, are relevant for stratifying a patient’s acute kidney injury risk.

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Predictors of acute kidney injury in patients after extracorporeal cardiopulmonary resuscitation

Perfusion ◽

10.1177/02676591211049767 ◽

2021 ◽

pp. 026765912110497

Author(s):

Christopher Gaisendrees ◽

Borko Ivanov ◽

Stephen Gerfer ◽

Anton Sabashnikov ◽

Kaveh Eghbalzadeh ◽

...

Keyword(s):

Acute Kidney Injury ◽

Creatine Kinase ◽

High Risk ◽

Cardiopulmonary Resuscitation ◽

Hospital Mortality ◽

Hospital Stay ◽

Kidney Injury ◽

Dialysis Patients ◽

Extracorporeal Cardiopulmonary Resuscitation ◽

Outcome Parameters

Objectives: Extracorporeal cardiopulmonary resuscitation (eCPR) is increasingly used due to its beneficial outcomes and results compared with conventional CPR. Data after eCPR for acute kidney injury (AKI) are lacking. We sought to investigate factors predicting AKI in patients who underwent eCPR. Methods: From January 2016 until December 2020, patients who underwent eCPR at our institution were retrospectively analyzed and divided into two groups: patients who developed AKI ( n = 60) and patients who did not develop AKI ( n = 35) and analyzed for outcome parameters. Results: Overall, 63% of patients suffered AKI after eCPR and 45% of patients who developed AKI needed subsequent dialysis. Patients who developed AKI showed higher values of creatinine (1.1 mg/dL vs 1.5 mg/dL, p ⩽ 0.01), urea (34 mg/dL vs 42 mg/dL, p = 0.04), CK (creatine kinase) (923 U/L vs 1707 U/L, p = 0.07) on admission, and CK after 24 hours of ECMO support (1705 U/L vs 4430 U/L, p = 0.01). ECMO explantation was significantly more often performed in patients who suffered AKI (24% vs 48%, p = 0.01). In-hospital mortality (86% vs 70%; p = 0.07) did not differ significantly. Conclusion: Patients after eCPR are at high risk for AKI, comparable to those after conventional CPR. Baseline urea levels predict the development of AKI during the hospital stay.

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Elevated Levels of Urinary Biomarkers TIMP-2 and IGFBP-7 Predict Acute Kidney Injury in Neonates after Congenital Heart Surgery

Journal of Pediatric Intensive Care ◽

10.1055/s-0041-1740359 ◽

2021 ◽

Author(s):

Michelle Ramírez ◽

Sujata Chakravarti ◽

Jaclyn McKinstry ◽

Yasir Al-qaqaa ◽

Raj Sahulee ◽

...

Keyword(s):

Acute Kidney Injury ◽

Congenital Heart ◽

Heart Surgery ◽

Kidney Injury ◽

Acute Kidney Injury Network ◽

Congenital Heart Surgery ◽

Adverse Outcomes ◽

Tissue Inhibitor Of Metalloproteinase ◽

Stress Injury ◽

Stage 1

Abstract Objectives: This article investigated the utility of urine biomarkers tissue inhibitor of metalloproteinase-2 (TIMP-2) and insulin-like growth factor binding protein-7 (IGFBP-7) in identifying acute kidney injury (AKI) in neonates after congenital heart surgery (CHS). TIMP-2 and IGFBP-7 are cell cycle arrest proteins detected in urine during periods of kidney stress/injury. Methods: We conducted a single-center, prospective study between September 2017 and May 2019 with neonates undergoing CHS requiring cardiopulmonary bypass (CPB). Urine samples were analyzed using NephroCheck prior to surgery and 6, 12, 24, and 96 hours post-CPB. All patients were evaluated using the Acute Kidney Injury Network (AKIN) criteria. Wilcoxon rank sum tests were used to compare the medians of the [TIMP-2*IGFBP-7] values in the AKIN negative and positive groups at each time point. Receiver operating characteristic curves were used to measure how well the [TIMP-2*IGFBP-7] values predict AKIN status. Results: Thirty-six patients were included. No patients met the AKIN criteria for AKI preoperatively. Postoperatively, 19 patients (53%) met the AKIN criteria for AKI diagnosis: 13 (36%) stage 1, 5 (14%) stage 2, and 1 (3%) stage 3. None required renal replacement therapy. At the 24-hour time points, patients who met the AKIN criteria for AKI had a statistically significantly higher [TIMP-2*IGFBP7] values than the patients without AKI (1.1 vs. 0.27 [ng/mL]2/1,000) at 24 hours (adj-p = 0.0019). Conclusion: AKI is a serious complication associated with adverse outcomes in patients undergoing cardiac surgery. [TIMP-2*IGFBP-7] urinary level 24 hours after CPB is a good predictor of AKI in this population.

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The Significance of “Fractional Excretion of Urea” in The Differential Diagnosis of Acute Kidney Injury in Cirrhotic Patients

QJM ◽

10.1093/qjmed/hcab100.028 ◽

2021 ◽

Vol 114 (Supplement_1) ◽

Author(s):

Sameh Mohamed Ghaly ◽

Moataz Serry Seyam ◽

Mohamed Osama Aly ◽

Ahmed Mohamed Hesham Abdelfattah ◽

Ahmed R. Mashaal

Keyword(s):

Acute Kidney Injury ◽

Differential Diagnosis ◽

Kidney Injury ◽

Fractional Excretion ◽

Final Diagnosis ◽

Good Alternative ◽

Decompensated Cirrhosis ◽

Eligibility Criteria ◽

Significant Difference ◽

Cirrhotic Patients

Abstract Background Patients with cirrhosis are more susceptible to develop AKI than the non-cirrhotic individuals. AKI has an estimated prevalence of approximately 20% to 50% among hospitalized patients with cirrhosis. Physicians caring for patients with cirrhosis should recognize the acute or chronic character of renal disease, the causes of renal injury, the clinical conditions leading concomitantly to AKI and liver dysfunction, and the prognostic factors associated with the progression of AKI. Hypovolemia (due to diuretics, hemorrhage and diarrhea), acute tubular necrosis (ATN), sepsis, nephrotoxic agents (such as nonsteroidal anti-inflammatory drugs, aminoglycosides and/or radiological contrasts) and hepatorenal syndrome (HRS)-type 1 are the most common causes of AKI in cirrhotic patients. Objective To evaluate the sensitivity of fractional excretion of urea (FEUrea) vas a diagnostic biomarker for different causes of acute kidney injury in liver cirrhosis. Patients and Methods This study was conducted in co-operation between Tropical Medicine Department, Ain-Shams University and the Gastroenterology and Hepatology Department, Theodor Bilharz Research Institute between July 2019 to January 2020. It included 70 adult Egyptian patients admitted for treatment of complications of cirrhosis who fulfilled the eligibility criteria and compared to 10 cirrhotic patients without renal impairment. All patients were subjected to; full history taking, thorough clinical examination, laboratory investigations, Child-Pugh score was calculated for admission and urine samples were collected for urinary urea and creatinine levels to calculate FEUrea. Results Concerning the gender distribution in this study, male to female percent was 40 (57.10%) males and 30 (42.90%) females for gender, respectively. As regards to the causes of AKI, there were 24 (34.30%) PRA, 7 (10.00%) HRS and 39 (55.70%) ATN for final diagnosis. In the current study, there was significant difference (P = 0.0001; P < 0.05) in FE urea % among PRA, HRS and ATN groups (26.28±2.89, 11.76±3.44, and 47.37±10.53, respectively). Findings showed a higher FEUrea cut-off for ATN (>33%) compared to lower cut-off values for PRA (<33% and >21%) and HRS (<21%). Conclusion FEUrea was found to be an excellent simple tool for the differential diagnosis of AKI in patients with decompensated cirrhosis and ascites. FEUrea has also proven to be a useful “tubular injury” marker by differentiating ATN from non-ATN with high diagnostic accuracy (Sensitivity and Specificity exceeding >90%). FEUrea was found to be a good alternative and noninvasive tool for differentiating causes of AKI in cirrhotic patients instead of other non-available or expensive markers.

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