Abstract:
OBJECTIVE:Intraoperative Doppler-determined renal resistive index (RRI) is a promising early acute kidney injury (AKI) biomarker. As RRI continues to be studied, its clinical usefulness and robustness in research settings will be linked to the ease, efficiency, and precision with which it can be interpreted. Therefore, the authors assessed the usefulness of computer vision technology as an approach to developing an automated RRI-estimating algorithm with equivalent reliability and reproducibility to human experts. DESIGN:Retrospective. SETTING:Single-center, university hospital. PARTICIPANTS:Adult cardiac surgery patients from 7/1/2013 to 7/10/2014 with intraoperative transesophageal echocardiography-determined renal blood flow measurements. INTERVENTIONS:None. MEASUREMENTS AND MAIN RESULTS:Renal Doppler waveforms were obtained retrospectively and assessed by blinded human expert raters. Images (430) were divided evenly into development and validation cohorts. An algorithm for automated RRI analysis was built using computer vision techniques and tuned for alignment with experts using bootstrap resampling in the development cohort. This algorithm then was applied to the validation cohort for an unbiased assessment of agreement with human experts. Waveform analysis time per image averaged 0.144 seconds. Agreement was excellent by intraclass correlation coefficient (0.939; 95% confidence interval [CI] 0.921 to 0.953) and in Bland-Altman analysis (mean difference [human-algorithm] -0.0015; 95% CI -0.0054 to 0.0024), without evidence of systematic bias. CONCLUSION:The authors confirmed the value of computer vision technology to develop an algorithm for RRI estimation from automatically processed intraoperative renal Doppler waveforms. This simple-to-use and efficient tool further adds to the clinical and research value of RRI, already the "earliest" among several early AKI biomarkers being assessed.
journal_name
J Cardiothorac Vasc Anesthjournal_title
Journal of cardiothoracic and vascular anesthesiaauthors
Andrew BY,Andrew EY,Cherry AD,Hauck JN,Nicoara A,Pieper CF,Stafford-Smith Mdoi
10.1053/j.jvca.2018.04.014subject
Has Abstractpub_date
2018-10-01 00:00:00pages
2203-2209issue
5eissn
1053-0770issn
1532-8422pii
S1053-0770(18)30241-6journal_volume
32pub_type
杂志文章abstract:OBJECTIVES:Postoperative cognitive decline (POCD) has a perceivable influence on daily living and is noticed more often by close relatives than by patients themselves 3 months after aortic valve replacement. This study aimed to elucidate the longitudinal course of the subjective awareness of POCD. DESIGN:Follow-up of ...
journal_title:Journal of cardiothoracic and vascular anesthesia
pub_type: 杂志文章
doi:10.1053/j.jvca.2015.12.008
更新日期:2016-04-01 00:00:00
abstract:OBJECTIVE:To compare the hemodynamic effects, efficacy, and safety of intravenous milrinone (M), 50 microg/kg during 10 minutes followed by 0.5 microg/kg/min, with intravenous dobutamine (D), 10 to 20 microg/kg/min, in patients with low cardiac output after cardiac surgery. DESIGN:Randomized, open-label, multicenter s...
journal_title:Journal of cardiothoracic and vascular anesthesia
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1053/jcan.2001.23274
更新日期:2001-06-01 00:00:00
abstract:OBJECTIVE:To develop a simple and reliable method for quantitating plasma glutamate concentration and apply this method to monitor systemic glutamate levels during coronary artery bypass graft (CABG) surgery, a procedure associated with neurologic deficits. DESIGN:Prospective serial investigation of cardiac surgery pa...
journal_title:Journal of cardiothoracic and vascular anesthesia
pub_type: 杂志文章
doi:10.1053/jcan.2002.125148
更新日期:2002-08-01 00:00:00
abstract:OBJECTIVE:To investigate the relationship between applied external positive end-expiratory pressure (PEEP) and auto-PEEP and the resultant total PEEP experienced by the patient during one-lung ventilation (OLV). DESIGN:A prospective clinical study. SETTING:A university hospital. PARTICIPANTS:Ten adult patients under...
journal_title:Journal of cardiothoracic and vascular anesthesia
pub_type: 杂志文章
doi:10.1016/s1053-0770(98)90318-4
更新日期:1998-04-01 00:00:00
abstract::A pulmonary artery catheter (PAC) capable of continuous cardiac output (CCO) determination by thermodilution has recently been introduced. The purpose of this study was to compare CCO with two other methods of cardiac output (Ot) determination: electromagnetometry (EM) and standard bolus thermodilution cardiac output ...
journal_title:Journal of cardiothoracic and vascular anesthesia
pub_type: 杂志文章
doi:10.1016/1053-0770(94)90193-7
更新日期:1994-12-01 00:00:00
abstract:BACKGROUND:It has been demonstrated that new regional wall motion abnormalities (RWMAs) are infrequently associated with electrocardiographic (ECG) ischemic changes during coronary artery bypass graft (CABG) surgery. The evaluation of apical or basal areas by biplane transesophageal echocardiography (TEE) may clarify t...
journal_title:Journal of cardiothoracic and vascular anesthesia
pub_type: 杂志文章
doi:10.1016/S1053-0770(96)80196-0
更新日期:1996-10-01 00:00:00
abstract:OBJECTIVE:To evaluate whether exogenous surfactant therapy may be useful in adult patients with acute lung injury or acute respiratory distress syndrome, using a meta-analysis of published clinical trials. DESIGN:A comprehensive literature search was performed to identify all randomized clinical trials examining the e...
journal_title:Journal of cardiothoracic and vascular anesthesia
pub_type: 杂志文章,meta分析
doi:10.1053/j.jvca.2011.11.006
更新日期:2012-10-01 00:00:00
abstract:OBJECTIVES:To implement a statistical model for protamine titration. DESIGN:Prospective randomized trial. SETTING:University hospital. PARTICIPANTS:Sixty (n = 30+30) patients scheduled for elective coronary artery bypass surgery were randomly assigned to 2 groups. INTERVENTIONS:Protamine dose calculated according t...
journal_title:Journal of cardiothoracic and vascular anesthesia
pub_type: 杂志文章,随机对照试验
doi:10.1053/j.jvca.2016.07.018
更新日期:2017-04-01 00:00:00
abstract::Twenty-three informed and consenting patients scheduled for CABG were anesthetized using computer-controlled infusions of alfentanil, midazolam, and pancuronium. Thirteen middle-aged patients received a preprogrammed infusion scheme of alfentanil, simulated using the population pharmacokinetic set of Maitre et al (Gro...
journal_title:Journal of cardiothoracic and vascular anesthesia
pub_type: 杂志文章,评审
doi:10.1016/1053-0770(94)90238-0
更新日期:1994-06-01 00:00:00
abstract:OBJECTIVES:To investigate whether the Edmonton Frail Scale (EFS), a multidimensional frailty assessment tool, improves the prediction of 30-day or in-hospital mortality over the use of the European System for Cardiac Outcome Risk Evaluation (EuroSCORE) II alone. DESIGN:Single-center prospective observational study. S...
journal_title:Journal of cardiothoracic and vascular anesthesia
pub_type: 杂志文章
doi:10.1053/j.jvca.2018.05.038
更新日期:2019-04-01 00:00:00
abstract:OBJECTIVE:Right-sided heart failure develops in lung transplantation candidates on prolonged peripheral extracorporeal membrane oxygenation support and is a major determinant of mortality. The use of central venoarterial extracorporeal membrane oxygenation for bridging of right-sided heart failure to lung transplantati...
journal_title:Journal of cardiothoracic and vascular anesthesia
pub_type: 杂志文章,评审
doi:10.1053/j.jvca.2019.01.059
更新日期:2019-07-01 00:00:00
abstract:OBJECTIVE:The present study examined the feasibility and efficacy of continuous bilateral erector spinae blocks for post-sternotomy pain in pediatric cardiac surgery. DESIGN:Prospective cohort study; patients were retrospectively matched 1:2 to control patients. Conditional logistic regression was used to compare dich...
journal_title:Journal of cardiothoracic and vascular anesthesia
pub_type: 杂志文章
doi:10.1053/j.jvca.2020.10.009
更新日期:2020-10-12 00:00:00
abstract:OBJECTIVE:Continuous thermodilution cardiac output (CCO) measurement was clinically evaluated in patients who underwent coronary revascularization using hypothermic low-flow, low-pressure cardiopulmonary bypass (CPB). DESIGN:Prospective study. SETTING:University hospital setting. PARTICIPANTS:30 cardiac surgical pat...
journal_title:Journal of cardiothoracic and vascular anesthesia
pub_type: 杂志文章
doi:10.1016/s1053-0770(05)80095-3
更新日期:1995-08-01 00:00:00
abstract::This study examined the effects of global normothermic hypoperfusion on the compressed spectral array (CSA) processed electroencephalogram (EEG) during high-dose narcotic anesthesia. Fifteen patients undergoing cardiac electrophysiologic surgery were studied. The patients were anesthetized with a standard high-dose na...
journal_title:Journal of cardiothoracic and vascular anesthesia
pub_type: 杂志文章
doi:10.1016/1053-0770(91)90276-y
更新日期:1991-06-01 00:00:00
abstract:OBJECTIVE:To evaluate the pharmacokinetics of amrinone and its metabolites in neonates and infants after reconstructive surgery for congenital heart disease. DESIGN:Prospective study. SETTING:Pediatric intensive care unit in a university hospital. PARTICIPANTS:Fifteen neonates aged less than 1 month with transpositi...
journal_title:Journal of cardiothoracic and vascular anesthesia
pub_type: 杂志文章
doi:10.1053/jcan.2000.7922
更新日期:2000-08-01 00:00:00
abstract:OBJECTIVE:The purpose of this study was to evaluate the left ventricular lusitropic effects of epinephrine versus milrinone after cardiopulmonary bypass. DESIGN:Prospective randomized study. SETTING:Single institution, university teaching hospital. PARTICIPANTS:Adult patients undergoing coronary artery bypass grafti...
journal_title:Journal of cardiothoracic and vascular anesthesia
pub_type: 杂志文章,随机对照试验
doi:10.1053/j.jvca.2005.03.011
更新日期:2005-06-01 00:00:00
abstract:OBJECTIVE:The authors tested the hypothesis that patients with metabolic syndrome are more likely to develop short-term cognitive dysfunction after cardiac surgery with cardiopulmonary bypass. DESIGN:A prospective study. SETTING:Veterans Affairs medical center. PARTICIPANTS:Fifty-six age- and education-balanced pati...
journal_title:Journal of cardiothoracic and vascular anesthesia
pub_type: 杂志文章
doi:10.1053/j.jvca.2010.06.008
更新日期:2011-04-01 00:00:00
abstract:OBJECTIVE:To determine whether postoperative forced-air warming of cardiac bypass patients in the intensive care unit (ICU) results in faster rate of warming and improved outcomes compared with more conventional ICU warming methods. DESIGN:Prospective randomized effectiveness study. SETTING:Three hundred fifty-bed un...
journal_title:Journal of cardiothoracic and vascular anesthesia
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1016/s1053-0770(97)90162-2
更新日期:1997-10-01 00:00:00
abstract::Cardiopulmonary bypass (CPB) has been one of the most important additions to the field of heart surgery in the past century. However, significant morbidity associated with CPB has led to the increasing implementation of off-pump coronary artery bypass (OPCAB). The use of OPCAB has broadened surgical revascularization ...
journal_title:Journal of cardiothoracic and vascular anesthesia
pub_type: 杂志文章,评审
doi:10.1053/j.jvca.2019.05.005
更新日期:2020-01-01 00:00:00
abstract:OBJECTIVE:Auditory information presented during anesthesia can activate memory. Surgical stimulation may enhance memory formation. The authors' hypothesis is that implicit memory processing is not preserved during unconsciousness, even in the presence of a surgical stimulus. DESIGN:A double-blind randomized controlled...
journal_title:Journal of cardiothoracic and vascular anesthesia
pub_type: 杂志文章,随机对照试验
doi:10.1053/j.jvca.2008.09.016
更新日期:2009-04-01 00:00:00
abstract:OBJECTIVES:To compare changes in blood flow in a grafted internal mammary artery (IMA) after cardiopulmonary bypass (CPB) in response to the administration of milrinone or nitroglycerin and to establish the effects of alpha-adrenergic stimulation. DESIGN:Randomized study. SETTING:A university medical center hospital ...
journal_title:Journal of cardiothoracic and vascular anesthesia
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1053/jcan.2001.28316
更新日期:2001-12-01 00:00:00
abstract:OBJECTIVE:The central sympatholytic effects of alpha2-adrenergic agonists are believed to be beneficial during myocardial ischemia, but the peripheral vasoconstrictive effects are controversial. The aim of this study was to investigate the coronary vascular effects of dexmedetomidine (DM) during reactive hyperemia. DE...
journal_title:Journal of cardiothoracic and vascular anesthesia
pub_type: 杂志文章
doi:10.1016/s1053-0770(96)80140-6
更新日期:1996-08-01 00:00:00
abstract::Study objectives were (1) to compare the hemodynamic effects of increasing doses of vecuronium, given as a bolus during induction of anesthesia using high-dose fentanyl, in patients undergoing myocardial revascularization; and (2) to determine whether increasing the dose of vecuronium would decrease the onset time to ...
journal_title:Journal of cardiothoracic and vascular anesthesia
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1016/1053-0770(91)90008-h
更新日期:1991-12-01 00:00:00
abstract:OBJECTIVE:The purpose of this study was to test the hypothesis that meperidine induces a dilator response in the feline pulmonary vascular bed, and to identify receptors involved in the mediation or modulation of these effects. DESIGN:Prospective vehicle controlled study. SETTING:University research laboratory. SUBJ...
journal_title:Journal of cardiothoracic and vascular anesthesia
pub_type: 杂志文章
doi:10.1053/j.jvca.2005.10.003
更新日期:2006-10-01 00:00:00
abstract:OBJECTIVE:Because of its invasive nature, debated effect on patient outcome, and the development of alternative hemodynamic monitoring technologies, the intraoperative use of the pulmonary artery catheter (PAC) has significantly decreased. The authors conducted a survey of the members of the Society of Cardiovascular A...
journal_title:Journal of cardiothoracic and vascular anesthesia
pub_type: 杂志文章
doi:10.1053/j.jvca.2014.07.016
更新日期:2015-02-01 00:00:00
abstract:OBJECTIVE:To assess the association between postoperative central venous oxygen saturation (ScvO(2)) and arterial lactate with outcome after cardiac surgery. DESIGN:Prospective observational study. SETTING:University-affiliated tertiary care hospital. PARTICIPANTS:Patients after coronary artery bypass and/or valve s...
journal_title:Journal of cardiothoracic and vascular anesthesia
pub_type: 杂志文章
doi:10.1053/j.jvca.2011.07.021
更新日期:2012-02-01 00:00:00
abstract:OBJECTIVE:Two types of material are used to manufacture double-lumen endobronchial tubes (DLTs): Polyvinylchloride (PVC) and silicon. PVC DLTs (Broncho-Cath) and silicon DLTs (Silbroncho) not only differ in material, but also subtly differ in structure. The goal of this study was to determine whether the incidences of ...
journal_title:Journal of cardiothoracic and vascular anesthesia
pub_type: 杂志文章,随机对照试验
doi:10.1053/j.jvca.2014.05.028
更新日期:2015-02-01 00:00:00
abstract:OBJECTIVE:The purpose of the present study was to examine resource utilization in octogenarians undergoing coronary artery bypass grafting (CABG) and compare it with usage in their younger cohorts at a tertiary care heart center. The resources examined were time to extubation, packed red blood cell transfusions, intens...
journal_title:Journal of cardiothoracic and vascular anesthesia
pub_type: 杂志文章
doi:10.1053/j.jvca.2005.03.030
更新日期:2005-10-01 00:00:00
abstract::The clinical competency committee offers a fellowship program a structured approach to assess the clinical performance of each trainee in a comprehensive fashion This special article examines the structure and function of this important committee in detail. Furthermore, the strategies for the optimal functioning of th...
journal_title:Journal of cardiothoracic and vascular anesthesia
pub_type: 杂志文章
doi:10.1053/j.jvca.2019.01.001
更新日期:2019-07-01 00:00:00
abstract::Tissue edema, in particular pulmonary edema, increasingly is recognized as a perioperative complication affecting outcome. Management strategies directed at avoiding excessive fluid administration, reducing inflammatory response, and decreasing capillary permeability commonly are advocated in perioperative care protoc...
journal_title:Journal of cardiothoracic and vascular anesthesia
pub_type: 杂志文章,评审
doi:10.1053/j.jvca.2017.02.018
更新日期:2017-08-01 00:00:00