scholarly journals Defining Baseline Creatinine for Identification of Acute Kidney Injury in Population-based Laboratory Databases - A Danish Nationwide Cohort Study

Kidney360 ◽  
2021 ◽  
pp. 10.34067/KID.0006082021
Author(s):  
Henriette V. Graversen ◽  
Simon K. Jensen ◽  
Søren V. Vestergaard ◽  
Uffe Heide-Jorgensen ◽  
Christian F. Christiansen
Keyword(s):  
Acute Kidney Injury ◽  
Cohort Study ◽  
Creatinine Level ◽  
Kidney Injury ◽  
Population Based ◽  
Kaplan Meier ◽  
All Cause Mortality ◽  
Baseline Creatinine ◽  
Creatinine Measurement

Background: The baseline creatinine level is central in the KDIGO criteria of acute kidney injury (AKI), but baseline creatinine is often inconsistently defined or unavailable in AKI research. We examined the rate, characteristics, and 30-day mortality of AKI in five AKI cohorts created using different definitions of baseline creatinine. Methods: This nationwide cohort study included all individuals aged ≥18 in Denmark with a creatinine measurement in year 2017. Applying the KDIGO criteria, we created four AKI cohorts using four different baseline definitions (most recent, mean, or median value of outpatient creatinine 365-8 days before, or median value 90-8 days before if available otherwise median value 365-91 days before) and one AKI cohort not using a baseline value. AKI rate and the distribution of age, sex, baseline creatinine, and comorbidity was described for each AKI cohort, and the 30-day all-cause mortality was estimated using the Kaplan-Meier method. Results: The study included 2,095,850 adults with at least one creatinine measurement in 2017. The four different baseline definitions identified between 61,189 and 62,597 AKI episodes. The AKI rate in these four cohorts was 13-14 per 1,000 person-years, and 30-day all-cause mortality was 17-18%. The cohort created without using a baseline creatinine included 37,659 AKI episodes, corresponding to an AKI rate of 8.2 per 1,000 person-years, and a 30-day mortality of 23%. All five cohorts were similar regarding age, sex, and comorbidity. Conclusions: In a population-based setting with available outpatient baseline creatinine, different baseline creatinine definitions revealed comparable AKI cohorts, while the lack of a baseline creatinine when defining AKI led to a smaller AKI cohort with a higher mortality. These findings underscore the importance of availability and consistent use of an outpatient baseline creatinine, in particular in studies of community-acquired AKI.

scholarly journals Postoperative acute kidney injury requiring continuous renal replacement therapy and outcomes after coronary artery bypass grafting: a nationwide cohort study

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Tak Kyu Oh ◽  
In-Ae Song
Keyword(s):  
Cohort Study ◽  
Renal Replacement Therapy ◽  
Replacement Therapy ◽  
Cox Regression ◽  
Artery Bypass ◽  
Kidney Injury ◽  
Population Based ◽  
Bypass Grafting ◽  
All Cause Mortality ◽  
Postoperative Aki

Abstract Background Previous studies reported that patients with acute kidney injury (AKI) requiring continuous renal replacement therapy (CRRT) after cardiac surgery were at a higher risk of postoperative mortality. However, the impact of AKI and CRRT on long-term mortality has not yet been identified. Therefore, we investigated whether postoperative AKI requiring CRRT was associated with one-year all-cause mortality after coronary artery bypass grafting (CABG). Methods For this population-based cohort study, we analyzed data from the National Health Insurance Service database in South Korea. The cohort included all adult patients diagnosed with ischemic heart disease who underwent isolated CABG between January 2012 and December 2017. Results A total of 15,115 patients were included in the analysis, and 214 patients (1.4%) required CRRT for AKI after CABG during hospitalization. They received CRRT at 3.1 ± 8.5 days after CABG, for 3.1 ± 7.8 days. On multivariable Cox regression, the risk of 1-year all-cause mortality in patients who underwent CRRT was 7.69-fold higher. Additionally, on multivariable Cox regression, the 30-day and 90-day mortality after CABG in patients who underwent CRRT were 18.20-fold and 20.21-fold higher than the normal value, respectively. Newly diagnosed chronic kidney disease (CKD) requiring renal replacement therapy (RRT) 1 year after CABG in patients who underwent CRRT was 2.50-fold higher. In the generalized log-linear Poisson model, the length of hospital stay (LOS) in patients who underwent CRRT was 5% longer. Conclusions This population-based cohort study showed that postoperative AKI requiring CRRT was associated with a higher 1-year all-cause mortality after CABG. Furthermore, it was associated with a higher rate of 30-day and 90-day mortality, longer LOS, and higher rate of CKD requiring RRT 1 year after CABG. Our results suggest that CRRT-associated AKI after CABG may be associated with an increased risk of mortality; hence, there should be interventions in these patients after hospital discharge.

scholarly journals Renin–angiotensin system blocker use and the risk of acute kidney injury after colorectal cancer surgery: a population-based cohort study

BMJ Open ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. e032964
Author(s):  
Charlotte Slagelse ◽  
H Gammelager ◽  
Lene Hjerrild Iversen ◽  
Kathleen D Liu ◽  
Henrik T Toft Sørensen ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Acute Kidney Injury ◽  
Cohort Study ◽  
Angiotensin Receptor Blockers ◽  
Kidney Injury ◽  
Population Based ◽  
Adjusted Risk ◽  
Increased Risk ◽  
The Impact ◽  
Postoperative Aki

ObjectivesIt is unknown whether preoperative use of ACE inhibitors (ACE-I) or angiotensin receptor blockers (ARBs) affects the risk of acute kidney injury (AKI) after colorectal cancer (CRC) surgery. We assessed the impact of preoperative ACE-I/ARB use on risk of AKI after CRC surgery.DesignObservational cohort study. Patients were divided into three exposure groups—current, former and non-users—through reimbursed prescriptions within 365 days before the surgery. AKI within 7 days after surgery was defined according to the current Kidney Disease Improving Global Outcome consensus criteria.SettingPopulation-based Danish medical databases.ParticipantsA total of 9932 patients undergoing incident CRC surgery during 2005–2014 in northern Denmark were included through the Danish Colorectal Cancer Group Database.Outcome measureWe computed cumulative incidence proportions (risk) of AKI with 95% CIs for current, former and non-users of ACE-I/ARB, including death as a competing risk. We compared current and former users with non-users by computing adjusted risk ratios (aRRs) using log-binomial regression adjusted for demographics, comorbidities and CRC-related characteristics. We stratified the analyses of ACE-I/ARB users to address any difference in impact within relevant subgroups.ResultsTwenty-one per cent were ACE-I/ARB current users, 6.4% former users and 72.3% non-users. The 7-day postoperative AKI risk for current, former and non-users was 26.4% (95% CI 24.6% to 28.3%), 25.2% (21.9% to 28.6%) and 17.8% (17.0% to 18.7%), respectively. The aRRs of AKI were 1.20 (1.09 to 1.32) and 1.16 (1.01 to 1.34) for current and former users, compared with non-users. The relative risk of AKI in current compared with non-users was consistent in all subgroups, except for higher aRR in patients with a history of hypertension.ConclusionsBeing a current or former user of ACE-I/ARBs is associated with an increased risk of postoperative AKI compared with non-users. Although it may not be a drug effect, users of ACE-I/ARBs should be considered a risk group for postoperative AKI.

scholarly journals Proton pump inhibitors and the risk of acute kidney injury in older patients: a population-based cohort study

CMAJ Open ◽  
2015 ◽  
Vol 3 (2) ◽  
pp. E166-E171 ◽  
Author(s):  
T. Antoniou ◽  
E. M. Macdonald ◽  
S. Hollands ◽  
T. Gomes ◽  
M. M. Mamdani ◽  
...  
Keyword(s):  
Acute Kidney Injury ◽  
Cohort Study ◽  
Proton Pump Inhibitors ◽  
Proton Pump ◽  
Older Patients ◽  
Kidney Injury ◽  
Population Based

scholarly journals Risk of developing severe sepsis after acute kidney injury: a population-based cohort study

Critical Care ◽  
2013 ◽  
Vol 17 (5) ◽  
pp. R231 ◽  
Author(s):  
Tai-Shuan Lai ◽  
Cheng-Yi Wang ◽  
Sung-Ching Pan ◽  
Tao-Min Huang ◽  
Meng-Chun Lin ◽  
...  
Keyword(s):  
Acute Kidney Injury ◽  
Severe Sepsis ◽  
Cohort Study ◽  
Kidney Injury ◽  
Population Based

Incidence of acute kidney injury in cancer patients: A Danish population-based cohort study

2011 ◽  
Vol 22 (4) ◽  
pp. 399-406 ◽  
Author(s):  
Christian Fynbo Christiansen ◽  
Martin Berg Johansen ◽  
Wendy J. Langeberg ◽  
Jon P. Fryzek ◽  
Henrik Toft Sørensen
Keyword(s):  
Acute Kidney Injury ◽  
Cohort Study ◽  
Cancer Patients ◽  
Kidney Injury ◽  
Population Based ◽  
Danish Population

scholarly journals Nonapnea Sleep Disorders and the Risk of Acute Kidney Injury: A Population-based Retrospective Cohort Study

2015 ◽  
Vol 17 (2) ◽  
pp. S22
Author(s):  
Hugo You-Hsien Lin ◽  
Kai-Ting Chang ◽  
Yu-Han Chang ◽  
Chi-Chih Hung ◽  
Hung-Chun Chen ◽  
...  
Keyword(s):  
Acute Kidney Injury ◽  
Cohort Study ◽  
Sleep Disorders ◽  
Retrospective Cohort Study ◽  
Retrospective Cohort ◽  
Kidney Injury ◽  
Population Based

scholarly journals Use of sodium–glucose cotransporter-2 inhibitors and risk of acute kidney injury in older adults with diabetes: a population-based cohort study

2020 ◽  
Vol 192 (14) ◽  
pp. E351-E360 ◽  
Author(s):  
Carina Iskander ◽  
David Z. Cherney ◽  
Kristin K. Clemens ◽  
Stephanie N. Dixon ◽  
Ziv Harel ◽  
...  
Keyword(s):  
Older Adults ◽  
Acute Kidney Injury ◽  
Cohort Study ◽  
Kidney Injury ◽  
Population Based ◽  
Sodium Glucose Cotransporter

Incidence of acute kidney injury in cancer patients: A population-based cohort study in Denmark

2009 ◽  
Vol 27 (15_suppl) ◽  
pp. 9570-9570
Author(s):  
C. F. Christiansen ◽  
M. B. Johansen ◽  
S. Christensen ◽  
W. Langeberg ◽  
J. P. Fryzek ◽  
...  
Keyword(s):  
At Risk ◽  
Multiple Myeloma ◽  
Acute Kidney Injury ◽  
Cohort Study ◽  
Cancer Patients ◽  
Cancer Diagnosis ◽  
Kidney Injury ◽  
Population Based ◽  
First Year ◽  
Increased Risk

9570 Background: Although cancer patients may be at increased risk for acute kidney injury (AKI), which could then reduce their likelihood of receiving optimal therapeutic management and supportive care, the occurrence of AKI among newly diagnosed cancer patients has not been well-described. Therefore, we examined the incidence of AKI within the first year after cancer diagnosis to estimate the magnitude of this risk and better understand which patients are at greatest risk. Methods: Using the population-based Danish Cancer Registry, we conducted a retrospective cohort study of 4,427 men and women from North Jutland, Denmark (population 500,000) diagnosed with cancer from 2002 to 2003 (non-melanoma skin cancer excluded). AKI was defined according to the Risk/ Injury/ Failure/ Loss/ End-stage-renal-disease (RIFLE) criteria. We included Risk or worse: at least a 1.5 times increase in serum creatinine (sCr) from baseline. SCr levels were obtained from the Regional Laboratory Database, which collects all biochemical analyses for hospital laboratories. Baseline sCr was defined as the lowest sCr in the year before cancer diagnosis. We compared this value to the highest sCr on record during the first year following cancer diagnosis to identify those who experienced an AKI. Results: Median age for the cohort was 68.6 years, 50.9% were men, and the most common cancer sites were lung (14.2%), breast (13.7%), prostate (9.8%), colon (9.6%), rectum (5.1%), and bladder (6.3%). During the first year, 973 (22.0%) members of the cohort experienced an AKI, corresponding to an overall incidence rate of 326 per 1,000 person-years (95% confidence interval (CI) 306–347). Incidence was highest among patients aged 80 years or older (531 per 1,000 person-years, 95% CI 464–606) and in those with cancer of the liver (1,221, 95%CI 676–2,205), pancreas (1,472, 95%CI 1,130–1,917), or kidney (1,254, 95%CI 974–1,616), or with multiple myeloma (855, 95%CI 538–1,356). Conclusions: To protect against AKI, we must first identify those at risk. Our study showed that over 20% of cancer patients may experience acute kidney injury in the first year after diagnosis. Older patients and those with cancer of the liver, pancreas, or kidney, or with multiple myeloma are especially at risk for AKI. [Table: see text]

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