Heart Ventricles

心脏心室
  • 文章类型: Journal Article
    目的:急性右心室后负荷增加(急性肺心病)继发的急性右心室衰竭是一种危及生命的疾病,可能在不同的临床环境中出现。有发展或明显患有急性肺心病的患者通常患有急性肺部疾病(例如,肺栓塞,肺炎,ARDS),最初在急诊科进行管理,后来在重症监护病房进行管理。根据临床情况,涉及其他专业(心脏病学,肺炎,内科)。因此,协调提供护理特别具有挑战性,但是,如COVID-19大流行期间所示,对预后有重大影响。迫切需要一个共同的框架来管理急性肺心病,并纳入所有相关学科的观点。本临床共识文件的范围是提供右心室解剖和生理特性的最新实用概述,特别关注急性肺心病的病理生理学。急性右心室衰竭的现代诊断方法,包括危险分层,和急性肺心病的当代管理,包括特殊治疗和机械循环和通气支持。该文件包括心脏病专家的观点,肺病学家,急诊医生,和重症医师参与这些患者的护理,并专注于急诊部门和重症心血管护理单位发生的急性管理。
    Acute right ventricular failure secondary to acutely increased right ventricular afterload (acute cor pulmonale) is a life-threatening condition that may arise in different clinical settings. Patients at risk of developing or with manifest acute cor pulmonale usually present with an acute pulmonary disease (e.g. pulmonary embolism, pneumonia, and acute respiratory distress syndrome) and are managed initially in emergency departments and later in intensive care units. According to the clinical setting, other specialties are involved (cardiology, pneumology, internal medicine). As such, coordinated delivery of care is particularly challenging but, as shown during the COVID-19 pandemic, has a major impact on prognosis. A common framework for the management of acute cor pulmonale with inclusion of the perspectives of all involved disciplines is urgently needed.
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    文章类型: Review
    在美国,约有620万成年人患有心力衰竭(HF)。对于药物治疗难以治疗的晚期HF患者,原位心脏移植或心室辅助装置(VAD)是唯一的长期生存选择.这些设备最常用的形式是左VAD(LVAD),植入以支持左心室。在2006年至2015年期间,每年植入多达2754个LVAD,使接受者能够保持相对正常的生活方式。包括门诊环境中的选择性和紧急牙科护理。随着越来越多的LVAD被植入,口腔医疗服务提供者(OHCPs)更有可能在门诊临床环境中遇到这些患者.这项研究旨在教育OHCPs了解这些患者的特定需求,并开始为其牙科管理制定临床指南。使用电子资源进行文献综述以识别与临床主题相关的所有文献。根据既定的纳入和排除标准选择适当的文献,并确定了2015年至2020年发表的3篇文章。没有人提供有关植入LVAD的患者护理的临床实践指南。然而,众所周知,由LVAD支持的患者发生血栓并发症的风险较高,这可能导致泵系统故障和栓塞中风。为了降低并发症的风险,这些患者接受抗凝治疗.不建议在牙科治疗之前中断这些药物。由于抗凝治疗的副作用和获得性凝血病,LVAD患者发生出血事件的风险也增加.因此,必须考虑常规口腔外科手术的围手术期出血风险.虽然大多数牙科护理可以在门诊进行,OHCPs应了解这些患者的特殊需求,并通过与LVAD/移植团队的密切协调提供适当的护理。
    About 6.2 million adults in the United States suffer from heart failure (HF). For patients with advanced HF refractory to medical therapy, an orthotopic heart transplant or a ventricular assist device (VAD) is the only long-term survival option. The most commonly used form of these devices is the left VAD (LVAD), implanted to support the left ventricle. As many as 2754 LVADs were implanted annually between 2006 and 2015, allowing recipients to maintain a relatively normal lifestyle, including both elective and emergency dental care in the ambulatory setting. As more LVADs are implanted, oral healthcare providers (OHCPs) are more likely to encounter these patients in an outpatient clinical setting. This study aims to educate OHCPs on the specific needs of these patients and to begin development of clinical guidelines for their dental management. A literature review using electronic resources was conducted to identify all literature relevant to the clinical topic. Appropriate literature was selected based on established inclusion and exclusion criteria, and 3 articles published between 2015 and 2020 were identified. None offered clinical practice guidelines for the care of patients with implanted LVADs. However, it is known that patients supported by an LVAD are at higher risk of thrombotic complications, which can lead to pump system failure and embolic stroke. To reduce the risk of complications, these patients are treated with anticoagulation therapy. Interruption of these drugs prior to dental treatment is not recommended. Due to the side effects of anticoagulation therapy and acquired coagulopathy, patients with an LVAD are also at increased risk of bleeding events. Thus, perioperative hemorrhagic risk during routine oral surgical procedures must be considered. While most dental care can be done in an outpatient setting, OHCPs should be aware of the special needs of these patients and provide appropriate care through close coordination with the LVAD/transplant team.
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  • 文章类型: Journal Article
    心脏再同步化治疗(CRT)是有症状的收缩性心力衰竭(HF)和左束支传导阻滞(LBBB)患者的首选治疗方法,尽管最佳药物治疗(OMT)。最近发布的2021年欧洲心脏病学会(ESC)心脏起搏和心脏再同步治疗指南强调了在左心室射血分数(LVEF)≤35%的HF患者中,在OMT之上使用CRT的重要性。窦性心律和典型的LBBB,QRS持续时间≥150ms。在导管消融术后出现难以治疗或复发的心房颤动(AF)时,房室结消融作为辅助治疗在有资格植入双心室系统的患者中变得更加重要。此外,在不需要增加右心室起搏的情况下,可以考虑CRT。然而,替代起搏部位和策略目前可用,如果CRT对患者不可行和有效。然而,针对“多边”或使用“多引线”的策略显示出比经典CRT的优越性。另一方面,传导系统起搏似乎是一种有前途的技术。尽管早期结果是积极的,长期的一致性有待解决。额外除颤治疗(ICD)的指征有时可能是不必要的,并且必须单独考虑。由于心力衰竭药物治疗的巨大发展和成功,它对LV功能的积极影响可以带来巨大的改善。医生必须等待这些影响和发现,这有望导致相关的LV改善,从而得出针对ICD的最终决定。
    Cardiac resynchronization therapy (CRT) is the therapy of choice for patients with symptomatic systolic heart failure (HF) and left bundle branch block (LBBB), despite optimal medical therapy (OMT). The recently published 2021 European Society of Cardiology (ESC) Guidelines on cardiac pacing and cardiac resynchronization therapy highlight the importance of CRT on top of OMT in HF patients with left ventricular ejection fraction (LVEF) ≤ 35%, sinus rhythm and typical LBBB with QRS duration ≥ 150 ms. In the presence of medically intractable or recurrent after catheter ablation atrial fibrillation (AF), AV nodal ablation as an adjuvant therapy becomes more relevant in patients qualifying for the implantation of a biventricular system. Furthermore, CRT may be considered in cases when increased pacing of the right ventricle is not desirable. However, alternative pacing sites and strategies are currently available, if the CRT is not feasible and effective in patients. However, strategies targeting \"multi-sides\" or using \"multi-leads\" have shown superiority over classic CRT. On the other hand, conduction system pacing seems to be a promising technique. Although early results are positive, consistency during the long term is pending. The indication for additional defibrillation therapy (ICD) may occasionally be unnecessary and has to be considered individually. Due to the great development and success of heart failure drug therapy, its positive effect on LV function can lead to enormous improvement. Physicians must await these effects and findings, which hopefully could lead to a relevant LV improvement resulting in a definitive decision against an ICD.
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  • 文章类型: Journal Article
    背景:持续的技术发展和更新的图像采集建议需要更新当前的超声心动图正常参考范围。索引心脏体积的最佳方法未知。
    目的:作者使用了大量健康人群的二维和三维超声心动图数据,为心腔的尺寸和体积以及中央多普勒测量提供更新的正常参考数据。
    方法:在挪威的HUNT(TrøndelagHealth)研究的第四波中,有2,462名个体接受了全面的超声心动图检查。其中,1,412(55.8%的女性)被归类为正常,并构成了更新的正常参考范围的基础。体积测量以1至3的幂索引到身体表面积和高度。
    结果:超声心动图尺寸的正常参考数据,卷,根据性别和年龄进行多普勒测量。女性左心室射血分数的正常下限为50.8%,男性为49.6%。根据特定性别年龄组,左心房收缩末期容积相对于体表面积的正常上限为44mL/m2~53mL/m2,右心室基底尺寸的相应正常上限为43mm~53mm.身高指数提高到3的幂,比体表面积指数占两性之间的差异更大。
    结论:作者提供了大量年龄跨度较大的健康人群的左、右心室和心房大小和功能超声心动图测量值的更新的正常参考值。左心房容积和右心室尺寸的较高正常上限突出了在超声心动图方法改进后相应更新参考范围的重要性。
    Continuous technologic development and updated recommendations for image acquisitions creates a need to update the current normal reference ranges for echocardiography. The best method of indexing cardiac volumes is unknown.
    The authors used 2- and 3-dimensional echocardiographic data from a large cohort of healthy individuals to provide updated normal reference data for dimensions and volumes of the cardiac chambers as well as central Doppler measurements.
    In the fourth wave of the HUNT (Trøndelag Health) study in Norway 2,462 individuals underwent comprehensive echocardiography. Of these, 1,412 (55.8% women) were classified as normal and formed the basis for updated normal reference ranges. Volumetric measures were indexed to body surface area and height in powers of 1 to 3.
    Normal reference data for echocardiographic dimensions, volumes, and Doppler measurements were presented according to sex and age. Left ventricular ejection fraction had lower normal limits of 50.8% for women and 49.6% for men. According to sex-specific age groups, the upper normal limits for left atrial end-systolic volume indexed to body surface area ranged from 44 mL/m2 to 53 mL/m2, and the corresponding upper normal limit for right ventricular basal dimension ranged from 43 mm to 53 mm. Indexing to height raised to the power of 3 accounted for more of the variation between sexes than indexing to body surface area.
    The authors present updated normal reference values for a wide range of echocardiographic measures of both left- and right-side ventricular and atrial size and function from a large healthy population with a wide age-span. The higher upper normal limits for left atrial volume and right ventricular dimension highlight the importance of updating reference ranges accordingly following refinement of echocardiographic methods.
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  • 文章类型: Editorial
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  • 文章类型: Journal Article
    这项研究旨在评估实施亚洲心血管成像学会实用教程2020(ASCI-PT2020)的共识声明对心脏MR晚期g增强(CMR-LGE)心肌活力评分的可靠性的影响在缺血性心肌病的背景下。
    共有来自五个不同国家的17名心血管成像专家评估了26名患者(男性:女性,23:3;中位年龄[四分位数范围],55.5年[50-61.8])伴有缺血性心肌病。对于LGE评分,根据17段,根据共识声明,使用暴露前后0~4分5分评分系统对各段的LGE程度进行评分.所有评分均通过基于网络的审查进行。切片的分数,维管区,总分作为相关节段得分的总和。使用Fleiss\'kappa评估段分数的观察者间可靠性,虽然组内相关系数(ICC)用于切片评分,血管区域评分,和总分。使用来自平均值(LoA)的协议限制来评估观察员之间的协议。
    在共识之前,每个部分的观察者间可靠性(Fleiss\'kappa)范围为0.242-0.662,在共识之后增加到0.301-0.774。每个切片的观察者间可靠性(ICC),每个血管区域,共识后总分增加(切片,0.728-0.805和0.849-0.884;血管区域,0.756-0.902和0.852-0.941;总分,0.847和0.913,在执行共识声明之前和之后,分别。随着所有切片的共识的实施,观察员之间在评分方面的共识也得到了改善,维管区,和总分。总分的LoA从±10.36分缩小到±7.12分。
    遵循ASCI-PT2020共识声明的指导,缺血性心肌病CMR-LGE评分的观察者间可靠性和一致性得到改善。
    This study aimed to evaluate the effect of implementing the consensus statement from the Asian Society of Cardiovascular Imaging-Practical Tutorial 2020 (ASCI-PT 2020) on the reliability of cardiac MR with late gadolinium enhancement (CMR-LGE) myocardial viability scoring between observers in the context of ischemic cardiomyopathy.
    A total of 17 cardiovascular imaging experts from five different countries evaluated CMR obtained in 26 patients (male:female, 23:3; median age [interquartile range], 55.5 years [50-61.8]) with ischemic cardiomyopathy. For LGE scoring, based on the 17 segments, the extent of LGE in each segment was graded using a five-point scoring system ranging from 0 to 4 before and after exposure according to the consensus statement. All scoring was performed via web-based review. Scores for slices, vascular territories, and total scores were obtained as the sum of the relevant segmental scores. Interobserver reliability for segment scores was assessed using Fleiss\' kappa, while the intraclass correlation coefficient (ICC) was used for slice score, vascular territory score, and total score. Inter-observer agreement was assessed using the limits of agreement from the mean (LoA).
    Interobserver reliability (Fleiss\' kappa) in each segment ranged 0.242-0.662 before the consensus and increased to 0.301-0.774 after the consensus. The interobserver reliability (ICC) for each slice, each vascular territory, and total score increased after the consensus (slice, 0.728-0.805 and 0.849-0.884; vascular territory, 0.756-0.902 and 0.852-0.941; total score, 0.847 and 0.913, before and after implementing the consensus statement, respectively. Interobserver agreement in scoring also improved with the implementation of the consensus for all slices, vascular territories, and total score. The LoA for the total score narrowed from ± 10.36 points to ± 7.12 points.
    The interobserver reliability and agreement for CMR-LGE scoring for ischemic cardiomyopathy improved when following guidance from the ASCI-PT 2020 consensus statement.
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  • 文章类型: Journal Article
    Heart failure is an inevitable end-stage consequence of significant valvular heart disease (VHD) that is left untreated and increasingly encountered in an ageing society. Recent advances in transcatheter procedures and improved outcomes after valve surgery mean that intervention can (and should) be considered in all patients - even the elderly and those with multiple comorbidities - at earlier stages of the natural history of primary VHD, before the onset of irreversible left ventricular dysfunction (and frequently before the onset of symptoms). All patients with known VHD should be monitored carefully in the setting of a heart valve clinic and those who meet guideline criteria for surgical or transcatheter intervention referred for intervention without delay. High quality evidence for the use of medical therapy in VHD is limited and achieving target doses in an elderly and comorbid population frequently challenging. Furthermore, determining whether the valve or ventricle is the principal disease driver is crucial (although the distinction is not always binary, and often unclear). Guideline-directed medical therapy remains the mainstay of treatment for secondary mitral regurgitation - although up to 50% of patients may fail to respond and should be considered for cardiac resynchronization, transcatheter or surgical valve intervention. Early and definitive management strategies are essential and should be overseen by a specialist Heart Team that includes a Heart Failure specialist. In this article, we provide an evidence-based summary of approaches to the medical treatment of VHD and clinical guidance for the best management of patients in situations where high quality evidence is lacking.
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  • 文章类型: Journal Article
    Pulmonary arterial hypertension (PAH) is a progressive disease with high mortality. A greater understanding of the physiology and function of the cardiovascular system in PAH will help improve survival. This review covers the latest advances within cardiovascular magnetic resonance imaging (CMR) regarding diagnosis, evaluation of treatment, and prognostication of patients with PAH.
    New CMR measures that have been proven relevant in PAH include measures of ventricular and atrial volumes and function, tissue characterization, pulmonary artery velocities, and arterio-ventricular coupling. CMR markers carry prognostic information relevant for clinical care such as treatment response and thereby can affect survival. Future research should investigate if CMR, as a non-invasive method, can improve existing measures or even provide new and better measures in the diagnosis, evaluation of treatment, and determination of prognosis of PAH.
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  • 文章类型: Journal Article
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  • 文章类型: Journal Article
    Longitudinal clinical surveillance by transthoracic echocardiography (TTE) is an established practice in children with repaired tetralogy of Fallot (TOF). Non-Invasive Imaging Guidelines recommends a list of reporting elements that should be addressed during routine TTE in this population. In this study, we assessed the adherence to these recommendations.
    This was a multi-center (n = 8) retrospective review of TTE reports in children ≤11 years of age who have had complete TOF repair. We included 10 patients from each participating center (n = 80) and scored 2 outpatient follow-up TTE reports on each patient. The adherence rate was based on completeness of TTE reporting elements derived from the guidelines.
    We reviewed 160 TTE reports on 80 patients. Median age was 4.4 months (IQR 1.5-6.6) and 3.6 years (IQR 1.3-6.4) at the time of complete surgical repair and first TTE report, respectively. The median adherence rate to recommended reporting elements was 61% (IQR 53-70). Of the 160 reports, 9 (7%) were ≥80% adherent and 40 (25%) were ≥70% adherent. Quantitative measurements of right ventricular outflow tract (RVOT), right ventricular (RV) size and function, and branch pulmonary arteries were least likely to be reported.
    Overall adherence to the most recent published imaging guidelines for surveillance of children with repaired TOF patients was suboptimal, especially for reporting of RVOT, RV size and function, and branch pulmonary arteries. Further studies are needed to explore the barriers to adherence to guidelines and most importantly, whether adherence is associated with clinical outcomes.
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