Influence of the combination of patient age and deep venous drainage on brain arteriovenous malformation recurrence after surgery

2012 ◽  
Vol 117 (5) ◽  
pp. 934-941 ◽  
Author(s):  
Michael Kerin Morgan ◽  
Nirav J. Patel ◽  
Mary Simons ◽  
Elizabeth Anne Ritson ◽  
Gillian Z. Heller
Keyword(s):  
Cox Regression ◽  
Case Reports ◽  
Young Patients ◽  
Case Series ◽  
Venous Drainage ◽  
Age Group ◽  
Risk Of Recurrence ◽  
Kaplan Meier ◽  
Initial Surgery ◽  
Increased Risk

Object Case reports suggest that young age is a critical factor in determining recurrence of brain arteriovenous malformations (AVMs) after surgery. However, other factors that may contribute to the increased risk of recurrence have not been considered. In this study, the authors' goal was to ascertain the risk and risk factors of recurrence after resection of AVMs of the brain. Methods A consecutive case series (prospectively collected data) of 600 cases of resection of brain AVMs was retrospectively analyzed. Radiological evidence of recurrence or nonrecurrence, as well as clinical evidence of recurrence, could be established in 427 of these cases that underwent follow-up for more than 350 days after initial surgery. These cases were analyzed using Kaplan-Meier curves and Cox regression with respect to age and the presence of deep venous drainage. Results Nine recurrent AVMs were found in 8 patients. By analysis of the Kaplan-Meier curves, the 10-year recurrence rate was 14% for those with deep venous drainage, compared with 4% for those without deep venous drainage. Stratifying by age, in the 0- to 20-year age group, the 10-year recurrence rates were 63% and 13% for those with and without deep venous drainage, respectively. In the 20- to 39-year age group, the rates were 5% and 0% respectively, and in the 40-year and older age group they were 0% and 3%, respectively. The hazard ratio for deep venous drainage, adjusted for age, was 5.97 (95% CI 1.20–29.69, p = 0.029). Conclusions The risk of recurrence after AVM resection is significant for young patients with deep venous drainage.

scholarly journals Fast-Track Programs in Total Hip and Knee Replacement at Swedish Hospitals—Influence on 2-Year Risk of Revision and Mortality

2021 ◽  
Vol 10 (8) ◽  
pp. 1680
Author(s):  
Urban Berg ◽  
Annette W-Dahl ◽  
Anna Nilsdotter ◽  
Emma Nauclér ◽  
Martin Sundberg ◽  
...  
Keyword(s):  
Fast Track ◽  
Cox Regression ◽  
Cox Regression Analysis ◽  
Total Hip ◽  
Total Knee Replacements ◽  
Risk Of Death ◽  
Kaplan Meier ◽  
Increased Risk ◽  
Hip And Knee Arthroplasty ◽  
Total Knee

Purpose: We aimed to study the influence of fast-track care programs in total hip and total knee replacements (THR and TKR) at Swedish hospitals on the risk of revision and mortality within 2 years after the operation. Methods: Data were collected from the Swedish Hip and Knee Arthroplasty Registers (SHAR and SKAR), including 67,913 THR and 59,268 TKR operations from 2011 to 2015 on patients with osteoarthritis. Operations from 2011 to 2015 Revision and mortality in the fast-track group were compared with non-fast-track using Kaplan–Meier survival analysis and Cox regression analysis with adjustments. Results: The hazard ratio (HR) for revision within 2 years after THR with fast-track was 1.19 (CI: 1.03–1.39), indicating increased risk, whereas no increased risk was found in TKR (HR 0.91; CI: 0.79–1.06). The risk of death within 2 years was estimated with a HR of 0.85 (CI: 0.74–0.97) for TKR and 0.96 (CI: 0.85–1.09) for THR in fast-track hospitals compared to non-fast-track. Conclusions: Fast-track programs at Swedish hospitals were associated with an increased risk of revision in THR but not in TKR, while we found the mortality to be lower (TKR) or similar (THR) as compared to non-fast track.

scholarly journals Varicella zoster virus infections increase the risk of disease flares in patients with SLE: a matched cohort study

2019 ◽  
Vol 6 (1) ◽  
pp. e000339 ◽  
Author(s):  
Fangfang Sun ◽  
Yi Chen ◽  
Wanlong Wu ◽  
Li Guo ◽  
Wenwen Xu ◽  
...  
Keyword(s):  
Propensity Score ◽  
Varicella Zoster Virus ◽  
Cox Regression ◽  
Control Period ◽  
Cox Regression Analysis ◽  
Varicella Zoster ◽  
Propensity Score Weighting ◽  
Kaplan Meier ◽  
Increased Risk ◽  
Risk Of Disease

ObjectiveTo explore whether varicella zoster virus (VZV) infection could increase the risk of disease flares in patients with SLE.MethodsPatients who had VZV reactivations between January 2013 and April 2018 were included from the SLE database (n=1901) of Shanghai Ren Ji Hospital, South Campus. Matched patients with SLE were selected as background controls with a 3:1 ratio. Patients with SLE with symptomatic bacterial infections of the lower urinary tract (UTI) were identified as infection controls. Baseline period and index period were defined as 3 months before and after infection event, respectively. Control period was the following 3 months after the index period. Flare was defined by SELENA SLEDAI Flare Index. Kaplan-Meier analysis, Cox regression model and propensity score weighting were applied.ResultsPatients with VZV infections (n=47), UTI controls (n=28) and matched SLE background controls (n=141) were included. 16 flares (34%) in the VZV group within the index period were observed, as opposed to only 7.1% in UTI controls and 9.9% in background controls. Kaplan-Meier curve revealed that patients with a VZV infection had a much lower flare-free survival within the index period compared with the controls (p=0.0003). Furthermore, after adjusting for relevant confounders including baseline disease activity and intensity of immunosuppressive therapy, Cox regression analysis and propensity score weighting confirmed that VZV infection within 3 months was an independent risk factor for SLE flares (HR 3.70 and HR 4.16, respectively).ConclusionsIn patients with SLE, recent VZV infection within 3 months was associated with increased risk of disease flares.

scholarly journals Advances in Antiplatelet Therapy for Dentofacial Surgery Patients: Focus on Past and Present Strategies

Materials ◽  
2019 ◽  
Vol 12 (9) ◽  
pp. 1524 ◽  
Author(s):  
Gabriele Cervino ◽  
Luca Fiorillo ◽  
Ines Paola Monte ◽  
Rosa De Stefano ◽  
Luigi Laino ◽  
...  
Keyword(s):  
Antiplatelet Therapy ◽  
Oral Surgery ◽  
Case Reports ◽  
Case Series ◽  
Antiplatelet Agents ◽  
Preventive Therapy ◽  
Antiplatelet Drugs ◽  
Risk Of Bleeding ◽  
The Past ◽  
Increased Risk

Background: Nowadays, patients involved in antiplatelet therapy required special attention during oral surgery procedures, due to the antiplatelet drugs assumption. The motivations of the assumption may be different and related to the patient’s different systemic condition. For this reason, accordingly to the current international guidelines, different protocols can be followed. The aim of this work is to analyze how the dentist’s approach to these patients has changed from the past to the present, evaluating the risk exposure for the patients. Methods: This review paper considered different published papers in literature through quoted scientific channels, going in search of “ancient” works in such a way as to highlight the differences in the protocols undertaken. The analyzed manuscripts are in the English language, taking into consideration reviews, case reports, and case series in such a way as to extrapolate a sufficient amount of data and for evaluating the past therapeutic approaches compared to those of today. Results: Colleagues in the past preferred to subject patients to substitution therapy with low molecular weight anticoagulants, by suspending antiplatelet agents to treatment patients, often for an arbitrary number of days. The new guidelines clarify everything, without highlighting an increased risk of bleeding during simple oral surgery in patients undergoing antiplatelet therapy. Conclusion: Either patients take these medications for different reasons, because of cardiovascular pathologies, recent cardiovascular events, or even for simple prevention, although the latest research shows that there is no decrease of cardiovascular accidents in patients who carry out preventive therapy. Surely, it will be at the expense of the doctor to assess the patient’s situation and risk according to the guidelines. For simple oral surgery, it is not necessary to stop therapy with antiplatelet agents because the risk of bleeding has not increased, and is localized to a post-extraction alveolus or to an implant preparation, compared to patients who do not carry out this therapy. From an analysis of the results it emerges that the substitutive therapy should no longer be performed and that it is possible to perform oral surgery safely in patients who take antiplatelet drugs, after a thorough medical history. Furthermore, by suspending therapy, we expose our patients to more serious risks, concerning their main pathology, where present.

scholarly journals Systematic review to investigate the safety of induction and augmentation of labour among pregnant women with iron-deficiency anaemia

BMJ Open ◽  
2018 ◽  
Vol 8 (12) ◽  
pp. e021793 ◽  
Author(s):  
Kathryn Bunch ◽  
Nia Roberts ◽  
Marian Knight ◽  
Manisha Nair
Keyword(s):  
Systematic Review ◽  
Iron Deficiency ◽  
Pregnant Women ◽  
Iron Deficiency Anaemia ◽  
Case Reports ◽  
Case Series ◽  
Severe Anaemia ◽  
Risk Of Bias ◽  
Deficiency Anaemia ◽  
Increased Risk

ObjectiveTo conduct a systematic review to investigate the safety of induction and/or augmentation of labour compared with spontaneous-onset normal labour among pregnant women with iron-deficiency anaemia.DesignSystematic review.SettingStudies from all countries, worldwide.PopulationPregnant women with iron-deficiency anaemia at labour and delivery.InterventionAny intervention related to induction and/or augmentation of labour.Outcome measuresPrimary: Postpartum haemorrhage (PPH), heart failure and maternal death. Secondary: Emergency caesarean section, hysterectomy, admission to intensive care unit.MethodWe searched 10 databases, including Medline and Embase, from database inception to 1 October 2018. We included all study designs except cross-sectional studies without a comparator group, case reports, case series, ecological studies, and expert opinion. The searches were conducted by a healthcare librarian and two authors independently screened and reviewed the studies. We used the Grading of Recommendations, Assessment, Development and Evaluations (GRADE) approachto ascertain risk of bias and conducted a narrative synthesis.ResultsWe identified 3217 journal articles, 223 conference papers, 45 dissertations and 218 registered trials. Ten articles were included for full-text review and only one was found to fulfil the eligibility criteria. This was a retrospective cohort study from India, which showed that pregnant women with moderate and severe anaemia could have an increased risk of PPH if they underwent induction and/or augmentation of labour, but the evidence was weak (graded as ‘high risk of bias’).ConclusionThe best approach is to prevent anaemia, but a large number of women in low-to-middle-income countries present with severe anaemia during labour. In such women, appropriate peripartum management could prevent complications and death. Our review showed that at present we do not know if induction and augmentation of labour is safe in pregnant women with iron-deficiency anaemia and further research is required.PROSPERO registration numberCRD42015032421.

856 NODAL METASTASES AFTER NEOADJUVANT CHEMORADIATION AND R0 RESECTION IN ESOPHAGEAL ADENOCARCINOMA: PATTERNS AND PROGNOSIS

2021 ◽  
Vol 34 (Supplement_1) ◽  
Author(s):  
Caitlin Harrington ◽  
Rebecca Carr ◽  
Smita Sihag ◽  
Prasad Adusumilli ◽  
Manjit Bains ◽  
...  
Keyword(s):  
Lymph Node ◽  
Esophageal Adenocarcinoma ◽  
Lymph Node Metastases ◽  
Cox Regression ◽  
Neoadjuvant Chemoradiation ◽  
Nodal Metastasis ◽  
Nodal Metastases ◽  
Risk Of Recurrence ◽  
Increased Risk ◽  
Node Metastases

Abstract   Although the pattern of nodal metastasis and the prognosis of number and location of positive nodes have been well described with esophageal cancer undergoing upfront surgery, little is known about nodal metastasis after neoadjuvant treatment. The aim of this study is to assess the pattern of nodal metastases in esophageal adenocarcinoma treated with neoadjuvant chemoradiation and surgery and evaluate its effect on prognosis. Methods All patients with esophageal adenocarcinoma who had undergone neoadjuvant chemoradiation and an R0 esophagectomy between 2010 and 2018 at our institution were included (n = 577). Pathology reports were reviewed for sites of lymph node metastases. Patients were excluded if nodal stations were not listed separately (n = 40). Age, sex, race, tumor location, TRG, pT stage, number of positive lymph nodes, number of positive nodal stations, and specific nodal stations were analyzed for risk of recurrence using univariable Cox regression, and significant covariates were included in multivariable Cox regression model. Results Of 537 patients, 193(36%) had pathologic nodal metastases. 153 patients(28%) had single-station disease: 135(88%) at the paraesophageal station, 16(10%) at the left gastric, 1 at the subcarinal and 1 at the paratracheal station(0.65% each). 32 patients(6.0%) had two-station and 8(1.5%) had three-station disease. The majority of patients with multiple positive nodal stations had positive nodes in the paraesophageal(90%) and/or left gastric artery stations(60%). On multivariable analysis, the number of positive nodal stations (HR 1.59, CI 1.35–1.84, p < 0.001), subcarinal (HR 2.78, CI 1.54–5.03, p < 0.001), and paraesophageal stations (HR 2.0, CI 1.58–2.54, p < 0.001) were associated with increased risk of recurrence. Conclusion Patients who have undergone neoadjuvant and R0 esophagectomy for adenocarcinoma often have lymph node metastases at time of surgery, most commonly at the paraesophageal station. The number of nodal stations, along with subcarinal and paraesophageal metastases, were associated with increased risk of recurrence.

Z-drugs and Falls: A Focused Review of the Literature

2020 ◽  
Vol 35 (12) ◽  
pp. 549-554
Author(s):  
Nicole Ryba ◽  
Rebecca Rainess
Keyword(s):  
Primary Outcome ◽  
Case Reports ◽  
Inappropriate Medication ◽  
Case Series ◽  
Cochrane Library ◽  
Inpatient Setting ◽  
Care Hospital ◽  
Review Of The Literature ◽  
Increased Risk ◽  
Risk Of Falls

OBJECTIVE: To provide a focused review of the literature related to the association between exposure to Z-drugs and the risk of falls, especially in the older population.<br/> DATA SOURCES: A literature search was conducted using Medline, PsychInfo, and the Cochrane Library database for all clinical trials, case series, and case reports published in English up to May 2020. The search terms used consisted of each Z-drug, including "zolpidem," "zopiclone," "eszopiclone," and "zaleplon," matched with "falls."<br/> STUDY SELECTION: The search yielded 295 studies. After review of abstracts, content and references were reviewed, and duplicates removed, a total of 9 articles met inclusion of exposure to at least 1 Z-drug and a primary outcome of falls.<br/> DATA EXTRACTION: The American Geriatrics Society 2019 Beers Criteria Update for Potentially Inappropriate Medication Use in Older Adults recommends to avoid using nonbenzodiazepine hypnotics in this patient population because of the risk of adverse events.<br/> DATA SYNTHESIS: A majority of the literature suggests an increased risk of falls with exposure to Z-drug use, especially zolpidem. Eight trials examined falls as a primary outcome in non-elderly (n=3) and elderly (n=5) patients in different settings, mostly in an inpatient setting (nursing facility or acute care hospital).<br/> CONCLUSION: Exposure to Z-drugs, especially zolpidem, should be evaluated and counseled on continuously as these medications put patients at an increased risk for falls and other complications.

Abstract TP209: Effect of Chemotherapy on Stroke Risk in Cancer Patients

Stroke ◽  
2020 ◽  
Vol 51 (Suppl_1) ◽  
Author(s):  
Takaya Kitano ◽  
Tsutomu Sasaki ◽  
Yasufumi Gon ◽  
Kenichi Todo ◽  
Shuhei Okazaki ◽  
...  
Keyword(s):  
Cancer Patients ◽  
Propensity Scores ◽  
Stroke Risk ◽  
Cox Regression ◽  
Treatment Plan ◽  
University Hospital ◽  
Chemotherapy Group ◽  
Kaplan Meier ◽  
Increased Risk ◽  
The Impact

Introduction: Chemotherapy may be a cause of cancer-associated stroke, but whether it increases stroke risk remains uncertain. We aimed to clarify the impact of chemotherapy on stroke risk in cancer patients. Methods: We investigated 27,932 patients enrolled in a hospital-based cancer registry at Osaka University Hospital between 2007 and 2015. The registry collects clinical data, including cancer status (site and stage), on all patients treated for cancer. Of them, 19,006 patients with complete data were included. A validated algorithm was used to identify stroke events within 2 years of cancer diagnosis. Patients were divided based on whether their initial treatment plan included chemotherapy. The association between chemotherapy and stroke was analyzed using the Kaplan-Meier method and stratified Cox regression. Results: Of the 19,006 patients, 5,887 (31%) patients were in the chemotherapy group. Non-targeted chemotherapy was used in 5,371 patients. Stroke occurred in 44 patients (0.75%) in the chemotherapy group and 51 patients (0.39%) in the no-chemotherapy group. Kaplan-Meier curve analysis showed that patients in the chemotherapy group had a higher stroke risk than patients in the no-chemotherapy group (HR 1.84; 95% CI 1.23-2.75; Figure [A]). However, this difference was insignificant after adjustment for cancer status using inverse probability of treatment weighting with propensity scores (HR 1.20; 95% CI 0.76-1.91; Figure [B]). Similarly, in the stratified Cox regression model, chemotherapy was not associated with stroke after adjustment for cancer status (HR 1.26; 95% CI 0.78-2.03). These findings were consistent with analysis wherein the effect of chemotherapy was treated as a time-dependent covariate (HR 1.02; 95% CI 0.55-1.88). Conclusions: In this population, the elevated stroke risk in cancer patients who received chemotherapy was presumably due to advanced cancer stage; chemotherapy was not associated with the increased risk of stroke.

Z-drugs and Falls: A Focused Review of the Literature

2020 ◽  
Vol 35 (12) ◽  
pp. 549-554
Author(s):  
Nicole Ryba ◽  
Rebecca Rainess
Keyword(s):  
Primary Outcome ◽  
Case Reports ◽  
Inappropriate Medication ◽  
Case Series ◽  
Cochrane Library ◽  
Inpatient Setting ◽  
Care Hospital ◽  
Review Of The Literature ◽  
Increased Risk ◽  
Risk Of Falls

OBJECTIVE: To provide a focused review of the literature related to the association between exposure to Z-drugs and the risk of falls, especially in the older population.<br/> DATA SOURCES: A literature search was conducted using Medline, PsychInfo, and the Cochrane Library database for all clinical trials, case series, and case reports published in English up to May 2020. The search terms used consisted of each Z-drug, including "zolpidem," "zopiclone," "eszopiclone," and "zaleplon," matched with "falls."<br/> STUDY SELECTION: The search yielded 295 studies. After review of abstracts, content and references were reviewed, and duplicates removed, a total of 9 articles met inclusion of exposure to at least 1 Z-drug and a primary outcome of falls.<br/> DATA EXTRACTION: The American Geriatrics Society 2019 Beers Criteria Update for Potentially Inappropriate Medication Use in Older Adults recommends to avoid using nonbenzodiazepine hypnotics in this patient population because of the risk of adverse events.<br/> DATA SYNTHESIS: A majority of the literature suggests an increased risk of falls with exposure to Z-drug use, especially zolpidem. Eight trials examined falls as a primary outcome in non-elderly (n=3) and elderly (n=5) patients in different settings, mostly in an inpatient setting (nursing facility or acute care hospital).<br/> CONCLUSION: Exposure to Z-drugs, especially zolpidem, should be evaluated and counseled on continuously as these medications put patients at an increased risk for falls and other complications.

scholarly journals Safety of Antimicrobials During Pregnancy: A Systematic Review of Antimicrobials Considered for Treatment and Postexposure Prophylaxis of Plague

2020 ◽  
Vol 70 (Supplement_1) ◽  
pp. S37-S50 ◽  
Author(s):  
Patricia A Yu ◽  
Emmy L Tran ◽  
Corinne M Parker ◽  
Hye-Joo Kim ◽  
Eileen L Yee ◽  
...  
Keyword(s):  
Spontaneous Abortion ◽  
Case Reports ◽  
Case Series ◽  
First Trimester ◽  
Neonatal Outcomes ◽  
Primary Sources ◽  
Limited Data ◽  
Postexposure Prophylaxis ◽  
Increased Risk ◽  
Adverse Pregnancy

Abstract Background The safety profile of antimicrobials used during pregnancy is one important consideration in the decision on how to treat and provide postexposure prophylaxis (PEP) for plague during pregnancy. Methods We searched 5 scientific literature databases for primary sources on the safety of 9 antimicrobials considered for plague during pregnancy (amikacin, gentamicin, plazomicin, streptomycin, tobramycin, chloramphenicol, doxycycline, sulfadiazine, and trimethoprim-sulfamethoxazole [TMP-SMX]) and abstracted data on maternal, pregnancy, and fetal/neonatal outcomes. Results Of 13 052 articles identified, 66 studies (case-control, case series, cohort, and randomized studies) and 96 case reports were included, totaling 27 751 prenatal exposures to amikacin (n = 9), gentamicin (n = 345), plazomicin (n = 0), streptomycin (n = 285), tobramycin (n = 43), chloramphenicol (n = 246), doxycycline (n = 2351), sulfadiazine (n = 870), and TMP-SMX (n = 23 602). Hearing or vestibular deficits were reported in 18/121 (15%) children and 17/109 (16%) pregnant women following prenatal streptomycin exposure. First trimester chloramphenicol exposure was associated with an elevated risk of an undescended testis (odds ratio [OR] 5.9, 95% confidence interval [CI] 1.2–28.7). Doxycycline was associated with cardiovascular malformations (OR 2.4, 95% CI 1.2–4.7) in 1 study and spontaneous abortion (OR 2.8, 95% CI 1.9–4.1) in a separate study. First trimester exposure to TMP-SMX was associated with increased risk of neural tube defects (pooled OR 2.5, 95% CI 1.4–4.3), spontaneous abortion (OR 3.5, 95% CI 2.3–5.6), preterm birth (OR 1.5, 95% CI 1.1–2.1), and small for gestational age (OR 1.6, 95% CI 1.2–2.2). No other statistically significant associations were reported. Conclusions For most antimicrobials reviewed, adverse maternal/fetal/neonatal outcomes were not observed consistently. Prenatal exposure to streptomycin and TMP-SMX was associated with select birth defects in some studies. Based on limited data, chloramphenicol and doxycycline may be associated with adverse pregnancy or neonatal outcomes; however, more data are needed to confirm these associations. Antimicrobials should be used for treatment and PEP of plague during pregnancy; the choice of antimicrobials may be influenced by these data as well as information about the risks of plague during pregnancy.

scholarly journals P0559AKI SEASONALITY IN ENGLAND

2020 ◽  
Vol 35 (Supplement_3) ◽  
Author(s):  
Esther Wong ◽  
Dorothea Nitsch
Keyword(s):  
Cox Regression ◽  
Winter Season ◽  
Kidney Injury ◽  
Seasonal Effect ◽  
Winter Mortality ◽  
Age Group ◽  
Hospitalised Patients ◽  
Increased Risk ◽  
The Uk ◽  
The Impact

Abstract Background and Aims Incidence of Acute Kidney Injury (AKI) is known to be seasonal, peaking in winter months among hospitalised patients. Previous studies have suggested that the seasonality of AKI is likely to be influenced by the seasonality of the underlying acute illnesses that are associated with AKI. Mortality of patients with AKI has also been reported as being higher in winter, reflecting well-described excess winter mortality associations. Here we describe the seasonal variations of AKI alerts in England and the associated mortality rate using linked national databases. Method Serum creatinine changes compatible with KDIGO AKI stage 1, 2 and 3 are sent by laboratories in England as AKI alerts to the treating clinicians and the UK Renal Registry (UKRR). We linked the electronic AKI alerts to the Hospital Episode Statistics (HES) data, to identify patients who were hospitalised. We carried out descriptive statistics, and investigate the seasonal effect to the 30-day patient mortality from date of getting AKI alert, using multivariable Cox regression and sequentially adjusting for age, sex, Index of multiple deprivation (IMD) and peak AKI stage Results Winter has the highest number of AKI episodes (N=81,276), which is 6% higher than that in summer (N=76,329) (Table 1). For patients who had an AKI episode and admitted to hospitals, the crude 30-day mortality is higher in the winter season when compared to the summer [HR 1.28 (1.25-1.31), p&lt;0.01] (Figure 1). After adjusting season by age, peak AKI stage, IMD and sex, winter season still has significantly higher 30-day mortality than summer [HR 1.24 (1.21-1.27), p&lt;0.01]. Winter mortality peak is confounded by age and AKI severity, which explained the drop of hazard ratio at winter peaks; whereas season is not confounded by deprivation and sex. The pattern of seasonality varies with age, in age group 18-39, there were 26.1% of AKI episodes in summer and 23.3% in winter, whereas in age group &gt;75, there were 23.7% in summer and 27.1% in winter. Conclusion Analysis of England data confirms seasonal peak in AKI during winter months. Additionally it shows increased risk of mortality for patients with AKI in winter months. Future work will investigate the impact of comorbidities and case-mix on outcomes. By understanding the seasonal variation of AKI, we can potentially plan preventive care and improve clinical practice.

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