Incidence of contrast-induced acute kidney injury in patients with acute mesenteric ischemia and identification of potential predictive factors

Vascular ◽  
2021 ◽  
pp. 170853812110507
Author(s):  
Emmanuel Augène ◽  
Fabien Lareyre ◽  
Julien Chikande ◽  
Lucas Guidi ◽  
Grégoire Mutambayi ◽  
...  
Keyword(s):  
Acute Kidney Injury ◽  
Contrast Medium ◽  
Predictive Factors ◽  
Mesenteric Ischemia ◽  
Kidney Injury ◽  
Acute Mesenteric Ischemia ◽  
Creatinine Concentration ◽  
Increased Risk ◽  
Significant Difference

Objective Contrast-enhanced computed tomography angiography (CTA) is commonly used to investigate acute abdominal conditions, but the risk of contrast-induced acute kidney injury (CI-AKI) has been poorly investigated in patients with acute mesenteric ischemia. The aim of the present study was to evaluate the incidence of CI-AKI in these patients and identify potential predictive factors. Methods Patients admitted for acute mesenteric ischemia who had a diagnostic CTA with contrast medium and a follow-up of creatinine concentration were retrospectively included. Results Among 53 patients included, 9 (16.9%) developed CI-AKI. The prevalence of chronic kidney disease did not differ significantly between those who developed CI-AKI and those who did not (33.3 vs 18.2%, p=.372). Plasma total bilirubin and conjugated bilirubin levels were significantly higher in patients who developed CI-AKI (17.5 vs 8.0 μmol/L, p=.013 and 8.0 vs 3.0 μmol/L, p=.031, respectively). The proportion of patients who had revascularization was similar between patients who developed CI-AKI and those who did not (11.1 vs 20.5%, p>.999). No significant difference was observed for 30-day mortality and all-cause mortality for a median follow-up of 168 days (22.2 vs 13.6%, p=.611; and 33.3 vs 61.4%, p=.153, respectively). Conclusion This study reports the incidence of CI-AKI in patients with acute mesenteric ischemia after diagnostic CTA with contrast medium. Plasma bilirubin levels were a predictive factor of CI-AKI in these patients. The administration of contrast media during revascularization was not associated with an increased risk of CI-AKI.

scholarly journals Rhabdomyolysis in a Patient with Severe Hypothyroidism: A Case Report

2020 ◽  
Author(s):  
Mikayla Welch ◽  
Naser Gharaibeh
Keyword(s):  
Acute Kidney Injury ◽  
Weight Gain ◽  
Statin Therapy ◽  
Thyroid Disease ◽  
Patient Adherence ◽  
Positive Family History ◽  
Kidney Injury ◽  
Initial Visit ◽  
Increased Risk

Abstract BackgroundHashimoto’s thyroiditis is typically diagnosed incidentally from elevated TSH or after evaluation of suggestive symptoms, including weight gain and fatigue. Rarely, patients present with an initial hyperthyroid state, Hashitoxicosis, that lasts weeks to months. Through a review of the current literature, it became apparent that this case is unique in several ways: the patient’s age, lack of comorbid conditions, the unique presentation of her thyroid disease, as well as the development of acute kidney injury while hospitalized.Case PresentationHere we present the case of a 26-year-old female who was referred to the Endocrinology office in July 2019 with symptoms of hyperthyroidism. She has a positive family history of Graves’ disease (GD) in her mother and thyroid malignancy in her maternal aunt. On her initial visit, TSH was suppressed, free thyroid hormones were increased, and both TPO and TSI antibodies were elevated. It was determined that this was likely a presentation of GD, and the patient was started on methimazole. She was instructed to follow-up every four weeks for monitoring of symptoms and labs. Three months following the initial visit, the patient failed to follow-up in office. During this time, she was seen by her primary care physician, diagnosed with hyperlipidemia, and started on statin therapy. One month later, on a subsequent follow-up with endocrinology, the patient complained of new onset back pain, muscle cramps, weight gain, and cold intolerance. She was sent to the emergency department for work-up. Evaluation revealed rhabdomyolysis in the setting of severe hypothyroidism, complicated by acute kidney injury. Her final diagnosis was found to be Hashitoxicosis with subsequent hypothyroidism.ConclusionsHyper- and hypothyroidism are two extremes on the spectrum of autoimmune thyroid disease, and the presentation can vary from patient-to-patient. Rarely, severe hypothyroidism can present with rhabdomyolysis with increased risk in patients on statin therapy. Thus, it is important to ensure patients are clinically and biochemically euthyroid prior to initiation of statin therapy. This case emphasizes the need for communication among physicians and the importance of patient adherence to treatment plans.

scholarly journals MO377HOW THE ITALIAN COVID-19 LOCKDOWN AFFECTED NEFROLOGICAL ACTIVITY IN A LOMBARD CENTER

2021 ◽  
Vol 36 (Supplement_1) ◽  
Author(s):  
Paolo Albrizio ◽  
Silvano Costa ◽  
Annalisa Foschi ◽  
Ivo Angelo Antonio Milani ◽  
Stefano Rindi ◽  
...  
Keyword(s):  
Acute Kidney Injury ◽  
Kidney Injury ◽  
First Aid ◽  
The Other ◽  
Renal Diseases ◽  
Significant Difference

Abstract Background and Aims Italy and Lombard hospitals particularly, were hard affected by Covid-19 pandemic, mostly during spring and autumn, seasons characterized by two lockdown periods which were however, partly different as rules. During first lockdown in fact, by hospital decision, all ambulatorial activity was closed, including nephrological one. This did not happen during second lockdown period. How the different choices about hospital activity affected nephrological patients is the aim of this study. Method we evaluated all nephrological advices requested by first aid units of our 3 hospitals, all located in Lombardy, to our Nephrology Unit, splitting out data in 3 periods (I lockdown, summer and II lockdown) and comparing with 2019. Data collected were: number of advices requested by day, age, sex, previous regular nephrological follow-up, Covid-19 diagnosis, nephrological diagnosis after nephrological advice and outcome. Results as shown in table 1, during I lockdown period, with hospital decision of suspending our nephrological ambulatorial activity, we suffered an incremented rate of patients approaching local first aid units compared to 2019 same period with an increased rate of acute kidney injury, mostly for dehydration, and with a higher rate of patients requiring hospitalization. All these differences resulted statistically significant vs 2019 same period (figure 1). On the other side, no statically significant difference was found during the other two examined periods, including the II lockdown, while all our ambulatories were fully operating. Conclusion Covid-19 pandemic affected also the nephrological population with an increased rate of first aid units’ accesses, acute kidney injury events and hospitalization comparing to 2019. However, these differences were detectable only during the I lockdown period characterized by the suspension of all ambulatorial activity, including our Unit. The absence of statistically significant differences during summer and primarily during II lockdown period demonstrates the importance of nephrological ambulatorial activity in management of renal diseases and in prevention of acute events.

scholarly journals Long-term consequences of acute kidney injury: a narrative review

2020 ◽  
Author(s):  
Joana Gameiro ◽  
Filipe Marques ◽  
José António Lopes
Keyword(s):  
Acute Kidney Injury ◽  
Patient Outcomes ◽  
Kidney Injury ◽  
Current Evidence ◽  
Long Term Outcomes ◽  
Increased Risk ◽  
Follow Up Care ◽  
Risk Of Progression

Abstract The incidence of acute kidney injury (AKI) has increased in the past decades. AKI complicates up to 15% of hospitalizations and can reach up to 50–60% in critically ill patients. Besides the short-term impact of AKI in patient outcomes, several studies report the association between AKI and adverse long-term outcomes, such as recurrent AKI episodes in 25–30% of cases, hospital re-admissions in up to 40% of patients, an increased risk of cardiovascular events, an increased risk of progression of chronic kidney disease (CKD) after AKI and a significantly increased long-term mortality. Despite the long-term impact of AKI, there are neither established guidelines on the follow-up care of AKI patients, nor treatment strategies to reduce the incidence of sequelae after AKI. Only a minority of patients have been referred to nephrology post-discharge care, despite the evidence of improved outcomes associated with nephrology referral by addressing cardiovascular risk and risk of progression to CKD. Indeed, AKI survivors should have specialized nephrology follow-up to assess kidney function after AKI, perform medication reconciliation, educate patients on nephrotoxic avoidance and implement strategies to prevent CKD progression. The authors provide a comprehensive review of the transition from AKI to CKD, analyse the current evidence on the long-term outcomes of AKI and describe predisposing risk factors, highlight the importance of follow-up care in these patients and describe the current therapeutic strategies which are being investigated on their impact in improving patient outcomes.

scholarly journals Significance of serum FGF-23 for risk assessment of contrast-associated acute kidney injury and clinical outcomes in patients undergoing coronary angiography

PLoS ONE ◽  
2021 ◽  
Vol 16 (7) ◽  
pp. e0254835
Author(s):  
Shao-Sung Huang ◽  
Po-Hsun Huang ◽  
Hsin-Bang Leu ◽  
Tao-Cheng Wu ◽  
Jaw-Wen Chen ◽  
...  
Keyword(s):  
Acute Kidney Injury ◽  
Coronary Angiography ◽  
Clinical Outcomes ◽  
Kidney Injury ◽  
Multivariate Regression Analysis ◽  
Major Adverse Cardiovascular Events ◽  
Free Survival ◽  
Increased Risk ◽  
Fgf 23

Background Fibroblast growth factor (FGF)-23 levels rise as kidney function declines. Whether elevated FGF-23 levels are associated with an increased risk for contrast-associated acute kidney injury (CA-AKI) and major adverse cardiovascular events (MACE) in patients undergoing coronary angiography remain uncertain. Methods In total, 492 patients receiving coronary angiography were enrolled. Their serum FGF-23 levels were measured before administration of contrast media. The occurrence of CA-AKI was defined as a rise in serum creatinine of 0.5 mg/dL or a 25% increase from the baseline value within 48 h after the procedure. All patients were followed up for at least 1 year or until the occurrence of MACE including death, nonfatal myocardial infarction (MI), and ischemic stroke. Results Overall, CA-AKI occurred in 41 (8.3%) patients. During a median follow-up of 2.6 years, there were 24 deaths, 3 nonfatal MIs, and 7 ischemic strokes. Compared with those in the lowest FGF-23 tertile, individuals in the highest FGF-23 tertile had a significantly higher incidence of CA-AKI (P < 0.001) and lower incidence of MACE-free survival (P = 0.001). In multivariate regression analysis, higher FGF-23 level was found to be independently associated with a graded risk for CA-AKI (OR per doubling, 1.90; 95% CI 1.48–2.44) and MACE (HR per doubling, 1.25; 95% CI 1.02–1.52). Conclusions Elevated FGF-23 levels were associated with an increased risk for CA-AKI and future MACE among patients undergoing coronary angiography. FGF-23 may play a role in early diagnosis of CA-AKI and predicting clinical outcomes after coronary angiography.

scholarly journals Associations of serum sodium levels with mortality in very elderly acute kidney injury patients

2020 ◽  
Author(s):  
Qinglin Li ◽  
Liang Pan ◽  
Zhi Mao ◽  
Hongjun Kang ◽  
Feihu Zhou
Keyword(s):  
Acute Kidney Injury ◽  
Elderly Patients ◽  
Serum Sodium ◽  
Kidney Injury ◽  
Mortality Rates ◽  
Very Elderly ◽  
Adjusted Analysis ◽  
Increased Risk ◽  
All Cause Mortality

Abstract Background: Patients suffering from acute kidney injury (AKI) have been associated with impaired sodium. However, studies on the association of dysnatremia with all-cause mortality risk in AKI patients are particularly lacking. We examined the relationship between different levels of serum sodium and mortality among very elderly patients with AKI. Methods: We retrospectively enrolled very elderly patients (≥ 75 years) from Chinese PLA General Hospital from 2007, to 2018. All-cause mortality was examined according to eight predefined sodium levels: <130.0 mmol/L, 130.0–134.9 mmol/L, 135.0–137.9 mmol/L, 138.0–141.9 mmol/L, 142.0–144.9 mmol/L, 145.0–147.9 mmol/L, 148.0–151.9 mmol/L, and ≥152.0 mmol/L. We estimated the risk of all-cause mortality using a multivariable adjusted Cox proportional hazard model, with a normal serum potassium level of 135.0–137.9 mmol/L as a reference. Results: In total, 744 geriatric patients were suitable for the final evaluation. Among them, 260 (34.9%) died within 90 days; during the 1-year follow-up, 5 patients were lost to follow-up, and 383 (51.8%) died. After 90 days, the mortality rates in the eight strata were 36.1, 27.8, 19.6, 24.4, 30.7, 48.6, 52.8, and 57.7%, respectively. In the multivariable adjusted analysis, patients with sodium levels <130.0 mmol/L [hazard ratio (HR): 2.247; 95% confidence interval (CI): 1.117–4.521], from 142.0 to 144.9 mmol/L (HR: 1.964; 95% CI: 1.100–3.508), from 145.0 to 147.9 mmol/L (HR: 2.942; 95% CI: 1.693–5.114), from 148.0 to 151.9 mmol/L (HR: 3.455; 95% CI: 2.009–5.944), and ≥152.0 mmol/L (HR: 3.587; 95% CI: 2.151–5.983) had an increased risk of all-cause mortality. After 1 year, the mortality rates in the eight strata were 58.3, 47.8, 33.7, 38.9, 45.5, 64.3, 69.4, and 78.4%, respectively. In the multivariable adjusted analysis, patients with sodium levels <130.0 mmol/L (HR: 1.944; 95% CI: 1.125–3.360), from 142.0 to 144.9 mmol/L (HR: 1.681; 95% CI: 1.062–2.660), from 145.0 to 147.9 mmol/L (HR: 2.631; 95% CI: 1.683–4.112), from 148.0 to 151.9 mmol/L (HR: 2.411; 95% CI: 1.552–3.744), and ≥152.0 mmol/L (HR: 3.037; 95% CI: 2.021–4.563) had an increased risk of all-cause mortality. Conclusion: Sodium levels outside the interval of 130.0–141.9 mmol/L were associated with increased risks of 90-day mortality and 1-year mortality in very elderly AKI patients.

scholarly journals Quinine exposure and the risk of acute kidney injury: a population-based observational study of older people

2020 ◽  
Vol 49 (6) ◽  
pp. 1042-1047 ◽  
Author(s):  
Andrew D S Duncan ◽  
Simona Hapca ◽  
Nicosha De Souza ◽  
Daniel Morales ◽  
Samira Bell
Keyword(s):  
Older Adults ◽  
Acute Kidney Injury ◽  
Adult Population ◽  
Case Series ◽  
Kidney Injury ◽  
Population Based ◽  
Health Board ◽  
Increased Risk ◽  
Rate Ratios

Abstract Objectives to establish and quantify any observable association between the exposure to community prescriptions for quinine and acute kidney injury (AKI) events in a population of older adults. Design two observational studies using the same dataset, a retrospective longitudinal cohort study and a self-controlled case series (SCCS). Setting NHS health board in Scotland. Participants older adults (60+ years) who received quinine prescriptions in Tayside, Scotland, between January 2004 and December 2015. The first study included 12,744 individuals. The SCCS cohort included 5,907 people with quinine exposure and more than or equal to one AKI event. Main outcome measured in the first study, multivariable logistic regression was used to calculate odds ratios (ORs) for AKI comparing between episodes with and without recent quinine exposure after adjustment for demographics, comorbidities and concomitant medications. The SCCS study divided follow-up for each individual into periods ‘on’ and ‘off’ quinine, calculating incidence rate ratios (IRRs) for AKI adjusting for age. Results during the study period, 273,596 prescriptions for quinine were dispensed in Tayside. A total of 13,616 AKI events occurred during follow-up (crude incidence 12.5 per 100 person-years). In the first study, exposure to quinine before an episode of care was significantly associated with an increased probability of AKI (adjusted OR = 1.27, 95% confidence interval (CI) 1.21–1.33). In the SCCS study, exposure to quinine was associated with an increased relative incidence of AKI compared to unexposed periods (IRR = 1.20, 95% CI 1.15–1.26), with the greatest risk observed within 30 days following quinine initiation (IRR = 1.48, 95% CI 1.35–1.61). Conclusion community prescriptions for quinine in an older adult population are associated with an increased risk of AKI.

P4523Impact of comorbiditity on the predictive value of acute kidney injury in patients admitted for acute decompensated heart failure: a prospective study

2019 ◽  
Vol 40 (Supplement_1) ◽  
Author(s):  
K Kayama ◽  
T Yamada ◽  
T Morita ◽  
Y Furukawa ◽  
S Tamaki ◽  
...  
Keyword(s):  
Heart Failure ◽  
Acute Kidney Injury ◽  
Acute Decompensated Heart Failure ◽  
Kidney Injury ◽  
Decompensated Heart Failure ◽  
Absolute Increase ◽  
Increased Risk ◽  
Significant Difference ◽  
Comorbidity Burden ◽  
The Impact

Abstract Background Comorbidities are associated with poor clinical outcome in patients with chronic heart failure, and acute kidney injury (AKI) also provides prognostic information in patients with heart failure. However, there is no information available on the impact of comorbidities on the prognostic value of AKI in patients admitted for acute decompensated heart failure (ADHF). Methods We prospectively studied 357 consecutive ADHF patients with survival discharge. Patients with hemodialysis were excluded. Comorbidity was measured with the Age-adjusted Charlson comorbidity index (ACCI) which is commonly used for the evaluation of the comorbid condition which is weighted and scored, with additional points added for age. AKI was defined as an absolute increase in serum creatinine of 0.3mg/dl or more during hospitalization. The endpoint was all-cause death (ACD). Results During a follow-up period of 2.2±1.4 years, 97 patients had ACD. At multivariate Cox analysis, ACCI (p<0.0001) and AKI (p=0.0061) were significantly and independently associated with ACD. Patients with high ACCI (≥5: determined by ROC analysis) had a significantly greater risk of ACD (39% vs 16%). In the subgroup of high ACCI, patients with AKI had a significantly higher risk of ACD (60% vs 35%), whereas there was no significant difference in the risk of ACD between with and without AKI (15% vs 16%) in the subgroup of low ACCI. Conclusions The presence of AKI was associated with the increased risk of mortality in ADHF patients with higher comorbidity burden but not in those without them.

scholarly journals Acute kidney injury in children with chronic kidney disease is associated with faster decline in kidney function

2020 ◽  
Author(s):  
Nabil Melhem ◽  
Pernille Rasmussen ◽  
Triona Joyce ◽  
Joanna Clothier ◽  
Christopher J. D. Reid ◽  
...  
Keyword(s):  
Chronic Kidney Disease ◽  
Acute Kidney Injury ◽  
Regression Analysis ◽  
Kidney Disease ◽  
Multiple Regression Analysis ◽  
Multiple Regression ◽  
Kidney Injury ◽  
End Point ◽  
Significant Difference

Abstract Background This study aimed to investigate the association of acute kidney injury (AKI) with change in estimated glomerular filtration rate (eGFR) in children with advanced chronic kidney disease (CKD). Methods Single centre, retrospective longitudinal study including all prevalent children aged 1–18 years with nondialysis CKD stages 3–5. Variables associated with CKD were analysed for their potential effect on annualised eGFR change (ΔGFR/year) following multiple regression analysis. Composite end-point including 25% reduction in eGFR or progression to kidney replacement therapy was evaluated. Results Of 147 children, 116 had at least 1-year follow-up in a dedicated CKD clinic with mean age 7.3 ± 4.9 years with 91 (78.4%) and 77 (66.4%) with 2- and 3-year follow-up respectively. Mean eGFR at baseline was 29.8 ± 11.9 ml/min/1.73 m2 with 79 (68%) boys and 82 (71%) with congenital abnormalities of kidneys and urinary tract (CAKUT). Thirty-nine (33.6%) had at least one episode of AKI. Mean ΔGFR/year for all patients was − 1.08 ± 5.64 ml/min/1.73 m2 but reduced significantly from 2.03 ± 5.82 to − 3.99 ± 5.78 ml/min/1.73 m2 from youngest to oldest age tertiles (P < 0.001). There was a significant difference in primary kidney disease (PKD) (77% versus 59%, with CAKUT, P = 0.048) but no difference in AKI incidence (37% versus 31%, P = 0.85) between age tertiles. Multiple regression analysis identified age (β = − 0.53, P < 0.001) and AKI (β = − 3.2, P = 0.001) as independent predictors of ΔGFR/year. 48.7% versus 22.1% with and without AKI reached composite end-point (P = 0.01). Conclusions We report AKI in established CKD as a predictor of accelerated kidney disease progression and highlight this as an additional modifiable risk factor to reduce progression of kidney dysfunction. Graphical abstract

scholarly journals Contrast‐Induced Acute Kidney Injury in Patients Undergoing TAVI Compared With Coronary Interventions

2020 ◽  
Vol 9 (16) ◽  
Author(s):  
Gabriele Venturi ◽  
Michele Pighi ◽  
Gabriele Pesarini ◽  
Valeria Ferrero ◽  
Mattia Lunardi ◽  
...  
Keyword(s):  
Acute Kidney Injury ◽  
Aortic Valve ◽  
Serum Creatinine ◽  
Contrast Medium ◽  
Kidney Function ◽  
Kidney Injury ◽  
Serum Creatinine Concentration ◽  
Creatinine Concentration ◽  
Emergency Procedures ◽  
The Impact

Background Differences in the impact of contrast medium on the development of contrast‐induced acute kidney injury (CI‐AKI) in patients undergoing transcatheter aortic valve implantation (TAVI) or a coronary angiography/percutaneous coronary intervention (CA/PCI) have not been previously investigated. Methods and Results Patients treated with TAVI or elective CA/PCI were retrospectively analyzed in terms of baseline and procedural characteristics, including preprocedural and postprocedural kidney function. CI‐AKI was defined as a relative increase in serum creatinine concentration of at least 0.3 mg/dL within 72 hours of contrast‐medium administration compared with baseline. The incidence of CI‐AKI in the TAVI versus CA/PCI group was compared. After the exclusion of patients in dialysis and emergency procedures, 977 patients were analyzed; there were 489 patients who had undergone TAVI (50.1%) and 488 patients who had undergone CA/PCI (49.9%). Patients treated by TAVI were older, presenting a higher rate of anemia and chronic kidney disease ( P <0.001 for all comparisons). Consistently, they also had a significantly lower glomerular filtration rate and higher serum creatinine concentration ( P <0.001 for all). However, the occurrence of CI‐AKI was significantly lower in these patients compared with patients treated by a CA/PCI (6.7% versus 14.5%, P <0.001). At multivariate analysis, the TAVI procedure had an independent protective effect on CI‐AKI incidence among total population (odds ratio, 0.334; 95% CI, 0.193–0.579; P <0.001). This observation was confirmed after propensity score matching among 360 patients (180 by TAVI and 180 by CA/PCI; P =0.002). Conclusions CI‐AKI occurred less frequently in patients undergoing TAVI than in patients undergoing a CA/PCI, despite a worse‐risk profile. The impact of contrast administration on kidney function in patients who had undergone TAVI may be better tolerated because of the hemodynamic changes following aortic valve replacement.

scholarly journals P0578QUININE EXPOSURE AND THE RISK OF ACUTE KIDNEY INJURY: A POPULATION BASED OBSERVATIONAL STUDY OF OLDER PEOPLE

2020 ◽  
Vol 35 (Supplement_3) ◽  
Author(s):  
Andrew Duncan ◽  
Simona Hapca ◽  
Nicosha De Souza ◽  
Daniel Morales ◽  
Samira Bell
Keyword(s):  
Older Adults ◽  
Acute Kidney Injury ◽  
Case Series ◽  
Kidney Injury ◽  
Population Level ◽  
Population Based ◽  
Immune Mediated ◽  
Increased Risk ◽  
Episodes Of Care

Abstract Background and Aims Quinine can precipitate Acute Kidney Injury (AKI) by immune-mediated reactions. Cramps, for which quinine is traditionally prescribed, may be a symptom of conditions that are risk factors for AKI. The relationship between quinine and AKI at a population level is unclear. The aim of this study was to establish and quantify any observable association between the exposure to community prescriptions for quinine and AKI events in a population of older adults. Method We performed two observational studies of older adults (60+ years) who received quinine prescriptions in Tayside, Scotland, between January 2004 and December 2015. The first study was a retrospective longitudinal cohort study with the primary outcome AKI. Creatinine measurements less than seven days apart were grouped as episodes of care. Multivariable logistic regression was used to calculate odds ratios (OR) for AKI comparing between episodes with and without recent quinine exposure after adjustment for demographics, comorbidities and concomitant medications. A self-controlled case series (SCCS) was then conducted with follow-up divided into periods “on” and “off” quinine for the same individual, calculating incidence rate ratios (IRR) for AKI adjusting for age. Results The first study included 12,744 individuals who experienced 13,616 AKI events during cohort follow-up (crude incidence 12.5 per 100 person-years). Exposure to quinine before an episode of care was significantly associated with an increased probability of AKI (adjusted OR=1.27, 95% CI 1.21-1.33). The SCCS cohort included 5,907 people with quinine exposure with ≥1 AKI event. Exposure to quinine was associated with an increased relative incidence of AKI compared to unexposed periods (IRR=1.20, 95% CI 1.15-1.26), with the greatest risk observed within 30 days of quinine initiation (IRR=1.48, 95% CI 1.35-1.61). Conclusion Exposure to quinine in patients aged 60 years and over was associated with an increased risk of AKI, the incidence of which is unlikely to simply be explained be immune-mediated reactions only. Further research is required to determine exact reasons for the increased risk of AKI.

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