Abstract:
:Background Hyperoxia during cardiopulmonary resuscitation (CPR) may lead to oxidative injury from mitochondrial-derived reactive oxygen species, despite guidelines recommending 1.0 inspired oxygen during CPR. We hypothesized exposure to 1.0 inspired oxygen during CPR would result in cerebral hyperoxia, higher mitochondrial-derived reactive oxygen species, increased oxidative injury, and similar survival compared with those exposed to 21% oxygen. Methods and Results Four-week-old piglets (n=25) underwent asphyxial cardiac arrest followed by randomization and blinding to CPR with 0.21 (n=10) or 1.0 inspired oxygen (n=10) through 10 minutes post return of spontaneous circulation. Sham was n=5. Survivors received 4 hours of protocolized postarrest care, whereupon brain was obtained for mitochondrial analysis and neuropathology. Groups were compared using Kruskal-Wallis test, Wilcoxon rank-sum test, and generalized estimating equations regression models. Both 1.0 and 0.21 groups were similar in systemic hemodynamics and cerebral blood flow, as well as survival (8/10). The 1.0 animals had relative cerebral hyperoxia during CPR and immediately following return of spontaneous circulation (brain tissue oxygen tension, 85% [interquartile range, 72%-120%] baseline in 0.21 animals versus 697% [interquartile range, 515%-721%] baseline in 1.0 animals; P=0.001 at 10 minutes postarrest). Cerebral mitochondrial reactive oxygen species production was higher in animals treated with 1.0 compared with 0.21 (P<0.03). Exposure to 1.0 oxygen led to increased cerebral oxidative injury to proteins and lipids, as evidenced by significantly higher protein carbonyls and 4-hydroxynoneals compared with 0.21 (P<0.05) and sham (P<0.001). Conclusions Exposure to 1.0 inspired oxygen during CPR caused cerebral hyperoxia during resuscitation, and resultant increased mitochondrial-derived reactive oxygen species and oxidative injury following cardiac arrest.
journal_name
J Am Heart Assocjournal_title
Journal of the American Heart Associationauthors
Marquez AM,Morgan RW,Ko T,Landis WP,Hefti MM,Mavroudis CD,McManus MJ,Karlsson M,Starr J,Roberts AL,Lin Y,Nadkarni V,Licht DJ,Berg RA,Sutton RM,Kilbaugh TJdoi
10.1161/JAHA.119.015032subject
Has Abstractpub_date
2020-05-05 00:00:00pages
e015032issue
9issn
2047-9980journal_volume
9pub_type
杂志文章abstract::Background Normal-flow, low-gradient severe aortic stenosis (NF-LG-SAS), defined by aortic valve area <1 cm2, mean gradient <40 mm Hg, and indexed stroke volume >35 mL/m2, is the most prevalent form of low-gradient aortic stenosis (AS). However, the true severity of AS and the management of NF-LG-SAS are controversial...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章,多中心研究
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abstract:BACKGROUND:Atrial fibrillation (AF) is a common, growing, and costly medical condition. We aimed to evaluate the impact of a management algorithm for symptomatic AF that used an emergency department observation unit on hospital admission rates and patient outcomes. METHODS AND RESULTS:This retrospective cohort study c...
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doi:10.1161/JAHA.115.002984
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abstract::Background Cardiovascular disease is the leading cause of morbidity and mortality in patients with end-stage renal disease. Heart rhythm complexity analysis has been shown to be useful in predicting outcomes in various diseases; however, data on patients with end-stage renal disease are limited. In this study, we anal...
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doi:10.1161/JAHA.119.013036
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abstract:BACKGROUND:The time-sensitive hazard of perioperative cardiac troponin T (cTnT) elevation and whether long-term mortality differs by mechanism of myocardial injury are poorly understood. METHODS AND RESULTS:In this observational study of 12 882 patients who underwent noncardiac vascular surgery, patients were assessed...
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pub_type: 杂志文章
doi:10.1161/JAHA.117.005672
更新日期:2017-06-06 00:00:00
abstract:BACKGROUND:Medication adherence improves outcomes for patients with heart failure, but adherence rates remain low. We examined the association between earlier postdischarge follow-up and medication adherence. METHODS AND RESULTS:We performed a retrospective cohort study of patients ≥65 years who were hospitalized for ...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章
doi:10.1161/JAHA.117.007998
更新日期:2018-04-01 00:00:00
abstract:BACKGROUND:Quercetin, the most abundant dietary flavonol, has antioxidant effects in cardiovascular disease, but the evidence regarding its effects on blood pressure (BP) has not been conclusive. We assessed the impact of quercetin on BP through a systematic review and meta-analysis of available randomized controlled t...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章,meta分析,评审
doi:10.1161/JAHA.115.002713
更新日期:2016-07-12 00:00:00
abstract:BACKGROUND:Decreased arterial elasticity is a risk factor for several cardiovascular outcomes. Longitudinal data on the effect of physical activity in youth on adult arterial elasticity are limited. The aim of this study was to determine the long-term effects of physical activity in children and young adults on carotid...
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pub_type: 杂志文章
doi:10.1161/JAHA.113.000594
更新日期:2014-04-22 00:00:00
abstract::Background Chronic kidney disease is a recognized independent risk factor for cardiovascular disease, but whether the risks of ST-segment-elevation myocardial infarction ( STEMI ) and non-ST-segment-elevation myocardial infarction ( NSTEMI ) differ in the chronic kidney disease population is unknown. Methods and Resul...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章
doi:10.1161/JAHA.118.009995
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abstract:BACKGROUND:Recent literature suggests that blood pressure variability (BPV) predicts outcome beyond blood pressure level (BPL) and that antihypertensive drug classes differentially influence BPV. We compared calcium channel blockers, angiotensin-converting enzyme inhibitors, and angiotensin receptor blockade for effect...
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pub_type: 杂志文章,多中心研究,随机对照试验
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更新日期:2016-03-23 00:00:00
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pub_type: 杂志文章,多中心研究
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更新日期:2019-02-05 00:00:00
abstract:BACKGROUND:Galectin-3 (Gal-3) participates in different mechanisms involved in atherothrombosis, such as inflammation, proliferation, or macrophage chemotaxis. Thus, there have been committed intensive efforts to elucidate the function of Gal-3 in cardiovascular (CV) diseases. The role of Gal-3 as a circulating biomark...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章
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abstract:BACKGROUND:Hospital procedures have been associated with cognitive change in older patients. This study aimed to document the prevalence of mild cognitive impairment in individuals undergoing left heart catheterization (LHC) before the procedure and the incidence of cognitive decline to 3 months afterwards. METHODS AN...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章
doi:10.1161/JAHA.117.008004
更新日期:2018-03-10 00:00:00
abstract:BACKGROUND:Reactive oxygen species (ROS) are associated with development of coronary artery disease (CAD). However, there's no useful biomarker of ROS in CAD. METHODS AND RESULTS:We recruited 395 consecutive CAD patients who were performed coronary angiography (262 male and 133 female, age 70.2±10), and we measured se...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章
doi:10.1161/JAHA.114.001451
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journal_title:Journal of the American Heart Association
pub_type: 杂志文章,多中心研究
doi:10.1161/JAHA.116.005054
更新日期:2017-02-08 00:00:00
abstract::Background Sex-specific differences may influence prognosis after deferred revascularization following fractional flow reserve (FFR) measurement. This study sought to investigate the sex differences in long-term prognosis of patients with deferred revascularization following FFR assessment. Methods and Results A total...
journal_title:Journal of the American Heart Association
pub_type: 杂志文章
doi:10.1161/JAHA.119.014458
更新日期:2020-02-18 00:00:00
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journal_title:Journal of the American Heart Association
pub_type: 杂志文章
doi:10.1161/JAHA.116.003907
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journal_title:Journal of the American Heart Association
pub_type: 杂志文章,多中心研究
doi:10.1161/JAHA.118.009873
更新日期:2018-09-18 00:00:00
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journal_title:Journal of the American Heart Association
pub_type: 杂志文章,随机对照试验
doi:10.1161/JAHA.117.008455
更新日期:2018-08-21 00:00:00
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journal_title:Journal of the American Heart Association
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doi:10.1161/JAHA.117.006050
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journal_title:Journal of the American Heart Association
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journal_title:Journal of the American Heart Association
pub_type: 杂志文章,多中心研究,随机对照试验
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doi:10.1161/JAHA.117.007126
更新日期:2018-07-09 00:00:00
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journal_title:Journal of the American Heart Association
pub_type: 杂志文章
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更新日期:2020-02-04 00:00:00
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journal_title:Journal of the American Heart Association
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journal_title:Journal of the American Heart Association
pub_type: 杂志文章
doi:10.1161/JAHA.117.007444
更新日期:2018-02-01 00:00:00
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pub_type: 杂志文章
doi:10.1161/JAHA.117.006245
更新日期:2017-10-03 00:00:00
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journal_title:Journal of the American Heart Association
pub_type: 杂志文章
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pub_type: 杂志文章
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更新日期:2018-09-04 00:00:00
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journal_title:Journal of the American Heart Association
pub_type: 杂志文章,随机对照试验
doi:10.1161/JAHA.113.000095
更新日期:2013-05-10 00:00:00
abstract:BACKGROUND:Besides hypertension, obesity and the metabolic syndrome have recently emerged as risk factors for atrial fibrillation. This study sought to delineate the development of an arrhythmogenic substrate for atrial fibrillation in hypertension with and without concomitant obesity and metabolic syndrome. METHODS A...
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pub_type: 杂志文章
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更新日期:2017-09-17 00:00:00