Background Early accurate detection of acute kidney injury (AKI) occurring after cardiac surgery may improve morbidity and mortality. Although several novel biomarkers have been developed for the ...early detection of AKI, their clinical utility in the critical intraoperative and immediate postoperative period remains unclear. Study Design Systematic review and meta-analysis. Setting & Population Adult patients having cardiac surgery. Selection Criteria for Studies EMBASE, CINAHL, Cochrane Library, Scopus, and PubMed from January 1990 until January 2015 were systematically searched for cohort studies reporting the utility of novel biomarkers for the early diagnosis of AKI after adult cardiac surgery. Reviewers extracted data for study design, population, timing of biomarker measurement and AKI occurrence, biomarker performance (area under the receiver operating characteristic curve AUROC), and risk of bias. Index Tests Novel urine, plasma, and serum AKI biomarkers, measured intraoperatively and in the early postoperative period (<24 hours). Reference Tests AKI was defined according to the RIFLE, AKIN, or 2012 KDIGO criteria. Results We found 28 studies reporting intraoperative and/or early postoperative measurement of urine (n = 23 studies) or plasma or serum (n = 12 studies) biomarkers. Only 4 of these studies measured biomarkers intraoperatively. Overall, intraoperative discrimination by the urine biomarkers neutrophil gelatinase-associated lipocalin (NGAL) and kidney injury marker 1 (KIM-1) demonstrated AUROCs < 0.70, whereas N -acetyl-β- d -glucosaminidase (NAG) and cystatin C had AUROCs < 0.75. In the immediate 24-hour postoperative period, the urine biomarkers NGAL (16 studies), KIM-1 (6 studies), and liver-type fatty acid binding protein (6 studies) exhibited composite AUROCs of 0.69 to 0.72. The composite AUROCs for postoperative urine cystatin C, NAG, and interleukin 18 were ≤0.70. Similarly, the composite AUROCs for postoperative plasma NGAL (6 studies) and cystatin-C (5 studies) were <0.70. Limitations Heterogeneous AKI definitions. Conclusions In adults, known urinary, plasma, and serum biomarkers of AKI possess modest discrimination at best when measured within 24 hours of cardiac surgery.
Abstract Objective To determine if adding frailty measures to the EuroSCORE II improves model performance in predicting postoperative delirium. Methods In a prospective observational study in ...elective cardiac surgery patients, frailty was defined using the Modified Fried Criteria (MFC), the Short Physical Performance Battery (SPPB) and a 35-item Frailty Index (FI). The primary outcome was postoperative delirium, assessed using the Confusion Assessment Method (CAM). Results Seventy-two (54.1%) of the 133 participants met the MFC definition for frailty and 69 (51.9%) met the SPPB definition. Eighty-eight (66.2%) participants had an FI score ≥0.2, and 47 (35.3%) had a score ≥0.3. After adjusting for the EuroSCORE II, frail patients as identified by the MFC were at increased risk of postoperative delirium (adjusted odds ratio OR, 5.05, 95% confidence interval CI, 1.58-16.13). Patients in the “high risk frailty” SPPB category had even greater risk (adjusted OR, 8.26, 95% CI, 2.23-30.64). FI scores ≥0.3 were also associated with higher risk of delirium (adjusted OR, 3.72, 95% CI, 1.39-9.92). The inclusion of any of these definitions of frailty improved the discrimination of the EuroSCORE II in predicting postoperative delirium. Conclusions Frailty results in a 3- to 8-fold increase in risk of postoperative delirium, independent of the EuroSCORE II. “Frail” and “fit” may be considered 2 ends of a continuum, and the risk of postoperative delirium grows as one becomes increasingly frail. The addition of frailty improves the ability of the EuroSCORE II to predict postoperative delirium, pointing to opportunities for improved prevention and management.
We performed a systematic review and meta-analysis to understand the role of flow-mediated dilatation (FMD) of the brachial artery (BA) and peripheral arterial tonometry (PAT) in predicting adverse ...events, including cardiovascular (CV) events and all-cause mortality.
FMD of the BA and PAT are non-invasive measures of endothelial function. Impairment of endothelial function is associated with increased CV events. While FMD is the more widely used and studied technique, PAT offers several advantages. The purpose of this systematic review and meta-analysis is to determine whether brachial FMD and PAT are independent risk factors for future CV events and mortality.
Multiple electronic databases were searched for articles relating FMD or PAT to CV events. Data were extracted on study characteristics, study quality, and study outcomes. Relative risks (RRs) from individual studies were combined and a pooled multivariate RR was calculated.
Thirty-six studies for FMD were included in the systematic review, of which 32 studies consisting of 15, 191 individuals were meta-analysed. The pooled RR of CV events and all-cause mortality per 1% increase in brachial FMD, adjusting for potential confounders, was 0.90 (0.88-0.92). In contrast, only three studies evaluated the prognostic value of PAT for CV events, and the pooled RR per 0.1 increase in reactive hyperaemia index was 0.85 (0.78-0.93).
Brachial FMD and PAT are independent predictors of CV events and all-cause mortality. Further research to evaluate the prognostic utility of PAT is necessary to compare it with FMD as a non-invasive endothelial function test in clinical practice.
This study determined whether frailty provides incremental value to the European System for Cardiac Operative Risk Evaluation II in identifying patients at risk of poor 1-year functional survival.
...This prospective study in patients undergoing cardiac surgery defined frailty using 3 common definitions: (1) the Modified Fried Criteria; (2) the Short Physical Performance Battery; and (3) the Clinical Frailty Scale. The primary outcome was functional survival, defined as being alive at 1 year postsurgery with a health-related quality of life score greater than 60 on the EuroQol-Visual Analogue Scale.
Of the 188 participants, 49.5%, 52.6%, and 31.9% were deemed frail according to the Modified Fried Criteria, Short Physical Performance Battery, and Clinical Frailty Scale, respectively. The median age of our cohort was 71.0 years (29.3% female). The probability of functional survival at 1 year for the entire cohort was 73.9%. After adjusting for the European System for Cardiac Operative Risk Evaluation II, patients deemed frail under the Modified Fried Criteria, Short Physical Performance Battery, and Clinical Frailty Scale had an increased odds ratio for poor functional survival of 3.44, 3.47, and 2.08, respectively. When compared with the European System for Cardiac Operative Risk Evaluation II alone, the Modified Fried Criteria, Short Physical Performance Battery, and Clinical Frailty Scale showed an absolute improvement in the discrimination slope of 6.7%, 6.5%, and 2.4% with a category-free classification improvement of 59.6%, 59.2%, and 35.1%, respectively.
Preoperative frailty was associated with a 2- to 3.5-fold higher risk of poor functional survival 1 year after cardiac surgery. The addition of frailty to the European System for Cardiac Operative Risk Evaluation II provides incremental value in identifying patients at risk of poor functional survival 1 year postsurgery, regardless of frailty definition.
Does a Heart Team Improve Clinical Outcomes? Scott-Herridge, Joel A.; McIntyre, William F.; Hiebert, Brett M. ...
The American journal of cardiology,
04/2022, Letnik:
169
Journal Article
Recenzirano
Consultation by a Heart Team (HT) is a class I recommendation by the American College of Cardiology, American Heart Association, and the European Society of Cardiology for the management of patients ...with complex cardiac disease. Despite the class I recommendation, there is a paucity of data to support the role of an HT with only level C quality of evidence. This study was performed to follow patients who were referred for HT consultation and long-term outcomes in relation to whether the recommendation of the HT was followed or not. We performed a prospective analysis of our cohort of patients who underwent consultation by the HT. A total of 342 cases have been followed. Patient characteristics, referring physicians’ favored treatment, and key outcomes were followed. A total of 336 patients were reviewed; 70.4% were male patients with a median age of 66.3 years and an average EuroSCORE II score of 7.2%. A total of 79.9% of the discussions resulted in a unanimous decision. The recommendations made by the HT differed from those documented by the referring physician in 54% of cases. In conclusion, recommendations made by the HT were followed in 269 cases (83.8%). There was a significant reduction in cardiac death (6.3% vs 15.3%, p = 0.042), composite cardiac outcome (23.4% vs 51.9%, p ≤0.001), and hospital admissions (10.4% vs 36.5%, p ≤0.001) when recommendations were followed. There was no statistical difference between the 2 groups when looking at noncardiac death, stroke, ST-segment elevation myocardial infarction, non–ST-segment elevation myocardial infarction, dialysis, or an emergency room visit.
Long-term data on patient survivors after extracorporeal membrane oxygenation (ECMO) support remains limited. This study sought to examine the 5-year survival and health-related quality of life ...(HRQoL) of patients treated with venoarterial (VA)- or venovenous (VV)-ECMO.
A single-center retrospective chart review and survival analysis was conducted on all patients who required ECMO from December 2007 to June 2019. Cross-sectional HRQoL assessments were performed using 8 standardized questionnaires among survivors.
Records for 370 ECMO patients (288 VA-ECMO, 82 VV-ECMO) were reviewed. Survival at 5 years was 33% (VA-ECMO) and 36% (VV-ECMO). Among patients that survived to 30 days, 5-year survival rates were 73% (VA-ECMO) and 71% (VV-ECMO). Sixty surviving patients (56%) had HRQoL assessments (48 VA-ECMO, 12 VV-ECMO). Median follow-up time was 4.2 (VA-ECMO) and 5.7 years (VV-ECMO). Fourteen (29%) VA-ECMO patients and 9 (75%) VV-ECMO patients reported difficulty with any activity of daily living whereas 13 (27%) VA-ECMO patients and 8 (67%) VV-ECMO patients reported difficulty with any instrumental activity of daily living. Eleven (23%) VA-ECMO patients and 7 (58%) VV-ECMO patients reported a high post-traumatic stress disorder score. Low decision regret scores in both cohorts indicated minimal regret that ECMO was initiated.
Five-year clinical and patient-centered outcomes of patients requiring ECMO support is acceptable in those who survived the initial 30 days. Among ECMO survivors, persistent HRQoL concerns were apparent, highlighting the importance of longer-term postdischarge follow-up.
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Objectives The etiology of postcardiac surgery delirium is complex. Our primary objective was to determine the effect of the postoperative environment on the prevalence of delirium by examining the ...in-hospital delirium rates in 2 postoperative intensive care units with differing physical infrastructure. We further sought to identify other risk factors associated with in-hospital delirium. Methods The rates of postoperative delirium were retrospectively examined in consecutive cardiac surgery patients during 2 separate 6-month periods. Environment 1 was characterized by a lack of physical barriers between bed spaces and was windowless, and environment 2 consisted of private rooms with physical barriers for each patient and with wall-to-wall exterior windows. Univariate and multivariate analyses to determine the risk factors associated with in-hospital delirium, including the effect of environment, were undertaken. Results Of the 1010 patients studied, 148 (14.7%) experienced in-hospital delirium after cardiac surgery. The prevalence of delirium was not significantly different between environments 1 and 2 (16.1% vs 13.5%; P = .25). However, in patients younger than 65 years, the proportion of intensive care unit days on which delirium occurred was greater in environment 1 than in environment 2 (5.4% vs 1.7%; P = .006). Postoperative stroke or transient ischemic attack, mechanical ventilation longer than 24 hours, age 65 years or older, concomitant coronary artery bypass grafting and valve surgery, prehospital admission benzodiazepine use, a requirement for any postoperative blood product transfusion, and postoperative renal insufficiency were identified as risk factors. Conclusions The intensive care unit environment did not have a significant effect on the overall prevalence of delirium. However, that does not preclude the possibility that the intensive care unit environment might interact with other factors, such as age, in a complex manner. Attempts to reduce delirium by adjusting the intensive care unit environment alone will likely not be sufficient, and instead will require a more comprehensive multimodal approach.
A Dynamic Predictive Model for Progression of CKD Tangri, Navdeep, MD, PhD, FRCPC; Inker, Lesley A., MD, MS; Hiebert, Brett, MSc ...
American journal of kidney diseases,
04/2017, Letnik:
69, Številka:
4
Journal Article
Recenzirano
Background Predicting the progression of chronic kidney disease (CKD) is vital for clinical decision making and patient-provider communication. We previously developed an accurate static prediction ...model that used single-timepoint measurements of demographic and laboratory variables. Study Design Development of a dynamic predictive model using demographic, clinical, and time-dependent laboratory data from a cohort of patients with CKD stages 3 to 5. Setting & Participants We studied 3,004 patients seen April 1, 2001, to December 31, 2009, in the outpatient CKD clinic of Sunnybrook Hospital in Toronto, Canada. Candidate Predictors Age, sex, and urinary albumin-creatinine ratio at baseline. Estimated glomerular filtration rate (eGFR), serum albumin, phosphorus, calcium, and bicarbonate values as time-dependent predictors. Outcomes Treated kidney failure, defined by initiation of dialysis therapy or kidney transplantation. Analytical Approach We describe a dynamic (latest-available-measurement) prediction model using time-dependent laboratory values as predictors of outcome. Our static model included all 8 candidate predictors. The latest-available-measurement model includes age and the latter 5 variables as time-dependent predictors. We used Cox proportional hazards models for time to kidney failure and compared discrimination, calibration, model fit, and net reclassification for the models. Results We studied 3,004 patients, who had 344 kidney failure events over a median follow-up of 3 years and an average of 5 clinic visits. eGFR was more strongly associated with kidney failure in the latest-available-measurement model versus the baseline visit static model (HR, 0.44 vs 0.65). The association of calcium level was unchanged, but male sex and phosphorus, albumin, and bicarbonate levels were no longer significant. Discrimination and goodness of fit showed incremental improvement with inclusion of time-dependent covariates (integrated discrimination improvement, 0.73%; 95% CI, 0.56%-0.90%). Limitations Our data were derived from a nephrology clinic at a single center. We were unable to include time-dependent changes in albuminuria. Conclusions A latest-available-measurement predictive model with eGFR as a time-dependent predictor can incrementally improve risk prediction for kidney failure over a static model with only a single eGFR.
Delirium is a common neurologic complication after cardiac surgery. Our primary objective was to determine the impact of delirium on self-reported problems with midterm cognitive functioning and mood ...postcardiac surgery.
A single-center, prospective cohort study was conducted, enrolling 197 patients undergoing coronary artery bypass grafting or valve replacement. Baseline cognition and mood were assessed preoperatively in elective patients as a part of routine care using the Montreal Cognitive Assessment and Patient Health Questionnaire 9, respectively. During hospitalization, delirium was diagnosed using the Confusion Assessment Method (Confusion Assessment Method/Confusion Assessment Method Intensive Care Unit). Follow-up assessments were carried out via telephone interview at 6 to 9 months after cardiac surgery using the EuroQoL-5D, Patient Health Questionnaire 9, Alcohol Use Disorders Identification Test Consumption, Memory Impairment Screen, and Category Fluency Test assessments. We examined resultant scores in the domains of cognition and mood among delirious and nondelirious cohorts, controlling for confounders deemed clinically relevant.
A total of 197 patients were enrolled in the study, of whom 44 (22%) developed postoperative delirium. After adjustment, no differences were observed in cognitive functioning between the delirious and nondelirious subjects after 6 to 9 months. However, delirious patients were more likely to experience self-reported problems in affective (depression and anxiety) functioning as measured by the EuroQoL-5D (odds ratio, 4.41; 95% confidence interval, 1.51-12.92; P < .01).
Postoperative delirium is associated with increased anxiety and depression at 6 to 9 months postcardiac surgery. Future investigation should seek to evaluate the utility of screening programs for affective disorders in those individuals who develop delirium in the postoperative period.
Aims
Aldosterone has been found to influence cancer cell growth, cell cycle regulation and cell migration, including in prostate cancer cells. Spironolactone is an aldosterone antagonist used for ...managing chronic heart failure (HF) with known antiandrogenic effects. We examined the effect of spironolactone exposure amongst men with HF on the incidence of prostate cancer.
Methods
This retrospective cohort study utilized provincial clinical and administrative databases from the Manitoba Centre for Health Policy. Incident cases of prostate cancer were identified from the provincial cancer registry, and spironolactone exposure was quantified from pharmacare databases. A multivariable proportional hazards model was used to assess the time‐dependent impact of spironolactone exposure on prostate cancer incidence.
Results
A total of 18 562 men with newly diagnosed HF from 2007 to 2015 with a median age of 72 years (interquartile range: 61–81) and a median follow‐up from HF diagnosis to prostate cancer incidence of 2.7 years (interquartile range: 1.1–4.9) were included. A time‐dependent multivariable analysis of spironolactone exposure following HF diagnosis found a reduced the risk of prostate cancer hazard ratio 0.55 (95% confidence interval 0.31–0.98, P = .043).
Conclusion
Spironolactone exposure significantly reduced the incidence of prostate cancer amongst men with HF. These findings support the plausibility of aldosterone as a promoter of prostate cancer growth and development. Prospective clinical trials are warranted to further assess the role of spironolactone or other mineralocorticoid receptor antagonists as a means to prevent prostate cancer development or as an adjunctive measure to prostate cancer treatments.
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