Echocardiography, Doppler

超声心动图,多普勒
  • 文章类型: Journal Article
    超声心动图三尖瓣环平面收缩期偏移/肺动脉收缩压(TAPSE/PASP)比率是右心室-肺动脉(RV-PA)耦合的非侵入性替代指标,与各自的侵入性指标非常吻合。最近,大量的观测数据已经出现,概述其在心力衰竭(HF)患者中的预后价值。无论病因或左心室射血分数如何,系统评估和定量综合TAPSE/PASP比值在左侧HF中的预后价值的证据。在电子数据库中进行了系统的文献综述,以确定报告TAPSE/PASP比值与HF患者预后相关的研究,在适当的时候,我们进行了一项随机效应荟萃分析,以量化全因死亡和全因死亡或HF住院的复合结局的未校正和校正风险比[(a)HR].18项研究被认为是合格的,包括8,699名HF患者。RV-PA解耦的应用截止值在0.27至0.58mm/mmHg之间变化很大,在大多数研究中,低于应用的临界值的值传达了令人沮丧的预后。11项研究报告了适当的荟萃分析数据。TAPSE/PASP降低1mm/mmHg与全因死亡(合并aHR=1.32[1.06-1.65];p=0.01;I2=56%)和复合结局(合并aHR=3.48[1.67-7.25];p<0.001;I2=0%)独立相关。当应用0.36mm/mmHg的TAPSE/PASP截断值时,其与全因死亡产生独立关联(合并aHR=2.84[2.22-3.64];p<0.001;I2=82%)。通过超声心动图TAPSE/PASP比值评估的RV-PA偶联似乎是HF患者的独立预后预测因子。
    The echocardiographic tricuspid annular plane systolic excursion/pulmonary artery systolic pressure (TAPSE/PASP) ratio is a non-invasive surrogate of right ventricular-pulmonary arterial (RV-PA) coupling which corresponds well with the respective invasively derived index. Recently, a wealth of observational data has arisen, outlining its prognostic value in heart failure (HF) patients. To systematically appraise and quantitatively synthesize the evidence of the prognostic value of TAPSE/PASP ratio in left-sided HF regardless of etiology or left ventricular ejection fraction. A systematic literature review was conducted in electronic databases to identify studies reporting the association of TAPSE/PASP ratio with outcomes in patients with HF and, when appropriate, a random-effects meta-analysis was conducted to quantify the unadjusted and adjusted hazard ratios [(a)HRs] for all-cause death and the composite outcome of all-cause death or HF hospitalization. Eighteen studies were deemed eligible encompassing 8,699 HF patients. The applied cut-off value for RV-PA uncoupling varied substantially from 0.27 to 0.58 mm/mmHg, and in most studies values lower than the applied cutoff conveyed dismal prognosis. Eleven studies reported appropriate data for meta-analysis. TAPSE/PASP reduction by 1 mm/mmHg was independently associated with all-cause death (pooled aHR=1.32 [1.06-1.65]; p=0.01; I2=56%) and the composite outcome (pooled aHR=3.48 [1.67-7.25]; p<0.001; I2=0%). When a TAPSE/PASP cutoff value of 0.36 mm/mmHg was applied it yielded independent association with all-cause death (pooled aHR=2.84 [2.22-3.64]; p<0.001; I2=82%). RV-PA coupling assessed by echocardiographic TAPSE/PASP ratio appears to be an independent outcome predictor for HF patients.
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  • 文章类型: Journal Article
    肺动脉高压被定义为在有或没有肝硬化的门静脉高压的情况下肺动脉高压的发展。门脉高压相关血流动力学变化,包括超动态状态,门体分流和内脏血管舒张,引起肺血管床的显着改变,并在疾病的发病机理中起关键作用。如果不及时治疗,门性肺动脉高压导致进行性右心衰竭,预后不良。尽管多普勒超声心动图是有症状患者和肝移植候选人的最佳初始筛查工具,右心导管仍然是诊断该疾病的金标准.严重的门性肺动脉高压通过增加围手术期死亡风险而对肝移植产生了极大的风险。在患者进行肝移植之前,重要的是血流动力学参数与非严重的门性肺动脉高压相对应。小型非对照研究和最近的一项随机对照试验报道了血管舒张治疗对患者临床和血流动力学改善的有希望的结果。允许一部分患者接受肝移植。在这次审查中,流行病学,发病机制,讨论了门性肺动脉高压的诊断方法和管理。我们还重点介绍了与风险分层和最佳患者选择相关的正在进行的调查领域,以最大程度地提高当前可用治疗的长期利益。
    Portopulmonary hypertension is defined as the development of pulmonary arterial hypertension in the setting of portal hypertension with or without liver cirrhosis. Portal hypertension-associated haemodynamic changes, including hyperdynamic state, portosystemic shunts and splanchnic vasodilation, induce significant alterations in pulmonary vascular bed and play a pivotal role in the pathogenesis of the disease. If left untreated, portopulmonary hypertension results in progressive right heart failure, with a poor prognosis. Although Doppler echocardiography is the best initial screening tool for symptomatic patients and liver transplantation candidates, right heart catheterisation remains the gold standard for the diagnosis of the disease. Severe portopulmonary hypertension exerts a prohibitive risk to liver transplantation by conferring an elevated perioperative mortality risk. It is important for haemodynamic parameters to correspond with non-severe portopulmonary hypertension before patients can proceed with the liver transplantation. Small uncontrolled studies and a recent randomised controlled trial have reported promising results with vasodilatory therapies in clinical and haemodynamic improvement of patients, allowing a proportion of patients to undergo liver transplantation. In this review, the epidemiology, pathogenesis, diagnostic approach and management of portopulmonary hypertension are discussed. We also highlight fields of ongoing investigation pertinent to risk stratification and optimal patient selection to maximise long-term benefit from currently available treatments.
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  • 文章类型: Journal Article
    肝硬化心肌病(CCM)的拟议诊断标准,将其定义为记录的收缩或舒张功能障碍的超声心动图发现(使用常规2D超声心动图),肝硬化患者有或没有电生理异常或生物标志物升高。与二维超声心动图相比,组织多普勒成像(TDI)具有较好的敏感性和特异性,在评估心功能不全时。这项对12项选定队列研究的荟萃分析试图使用常规超声心动图或TDI估计CCM的合并患病率。根据2005年的标准,CCM的合并患病率为61%(P=0.106).当使用TDI时,CCM的患病率为45%(P=0.088)。分析615例肝硬化患者的数据,这项研究估计了肝硬化患者的平均人群特异性超声心动图值,包括左心室射血分数(63.52%),减速时间(229.04ms),等体积弛豫时间(87.71ms)和E/A比(1.04)。与TDI相比,使用标准的2D超声心动图可导致CCM的过度诊断。
    The proposed diagnostic criteria for cirrhotic cardiomyopathy (CCM), defines it as documented echocardiographic findings of systolic or diastolic dysfunction (using conventional 2D echocardiogram), with or without electrophysiological abnormalities or elevated biomarkers in cirrhotic patients. In comparison to 2D echocardiogram, tissue Doppler imaging (TDI) has better sensitivity and specificity, when evaluating for cardiac dysfunction. This meta-analysis of 12 selected cohort studies attempted to estimate the pooled prevalence of CCM using either conventional echocardiography or TDI. Using the 2005 criteria, the pooled prevalence of CCM is 61% (P = 0.106). When TDI is used, the prevalence of CCM is at 45% (P = 0.088). Analyzing data of 615 cirrhotic patients, this study estimates the mean population-specific echocardiographic values of cirrhotic patients, including left ventricle ejection fraction (63.52%), deceleration time (229.04 ms), isovolumetric relaxation time (87.71 ms) and E/A ratio (1.04). In comparison to TDI, using standard 2D echocardiography leads to overdiagnosis of CCM.
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  • 文章类型: Journal Article
    通过荟萃分析确定左心室舒张功能(LVDF)指标对单胎正常血压妊娠的适应性。
    文献检索自PubMed和Embase。我们纳入了报道非妊娠参考测量和LVDF指数(二尖瓣流入信号,左心房容积和组织多普勒测量)。使用随机效应模型计算孕妇和参考测量值之间的平均差以及绝对值的加权平均值。
    我们纳入了34项符合条件的研究。正常血压妊娠的特征是被动左心室充盈的最初较大增加(E波峰值速度,13%)与舒张期主动左心室充盈相比(A波峰值速度,6%),导致孕早期的E/A比增加16%。E/A比率在妊娠期间逐渐下降至-18%,由于稳定E波峰值速度和增加的A波峰值速度。在正常血压妊娠中,E/e比值在22至35周之间增加(最大增加13%)。左心房容积(LAV)从15周开始逐渐增加,在36至41周之间最大增加30%。
    正常血压妊娠的LVDF在孕早期得到改善,之后LVDF逐渐恶化。需要对正常血压和高血压并发妊娠进行大规模研究,以更准确地了解怀孕期间的LVDF变化。
    To meta-analytically determine the adaptation of left ventricular diastolic function (LVDF)-indices to singleton normotensive pregnancies.
    Literature was retrieved from PubMed and Embase. We included studies that reported a nonpregnant reference measurement and LVDF indices (mitral inflow signals, left atrial volume and tissue Doppler measurements). Mean differences between pregnant and reference measurements and weighted means of absolute values were calculated using a random-effects model.
    We included 34 eligible studies. Normotensive pregnancies were characterized by an initially larger increase in the passive left ventricular filling (E-wave peak velocity, 13%) compared to active left ventricular filling during diastole (A-wave peak velocity, 6%) resulting in a 16% increase of the E/A ratio in the first trimester. The E/A ratio progressively decreased during advancing gestation to -18% at term, resulting from stabilizing E-wave peak velocity and increased A-wave peak velocity. The E/e\' ratio was increased between 22 and 35 weeks (a maximal increase of 13%) in normotensive pregnancy. Left atrial volume (LAV) progressively increased from 15 weeks onwards with a maximal increase of 30% between 36 and 41 weeks.
    LVDF in normotensive pregnancy was improved in the first trimester after which LVDF progressively worsened. Large-scale studies in normotensive and hypertensive complicated pregnancies are needed for a more precise insight into LVDF changes during pregnancy.
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  • 文章类型: Journal Article
    Data obtained from echocardiographic studies are used on a daily basis to guide clinical decision-making regarding patient management and the need for additional diagnostic investigations. Interrogation of blood flow in the pulmonary veins by spectral, most often pulsed-wave, Doppler is an important component of any comprehensive echocardiographic study. Whereas it is most often used to help assess left-sided filling pressure and quantify the severity of mitral regurgitation, the pulmonary vein Doppler profile provides added diagnostic insights into several disorders that affect heart function and allows assessment of their hemodynamic consequences on the heart. The aim of this review is to summarize current knowledge in the field of PV Doppler interrogation, highlight the physiological and pathological parameters that influence it, and delineate the manifestations of various cardiovascular disorders on the flow profile.
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  • 文章类型: Journal Article
    Mitral regurgitation (MR) is a common valvular heart disease, which can be classified into primary and secondary, according to the cause. Primary mitral regurgitation (PMR) is caused by rheumatic fever, degenerative changes, valve prolapse, etc. The appearance of clinical symptoms has always been the best indicator of surgical intervention in patients with severe PMR, but for asymptomatic patients, the best treatment has been controversial. The choice of follow-up observation or early surgery has different results in different randomized studies. Two-dimensional echocardiography is the most commonly used detection method for evaluating MR, but its evaluation of the degree of reflux may be inaccurate, and there are differences in the outcomes of patients with asymptomatic PMR. Recent studies have shown that three-dimensional echocardiography, cardiac magnetic resonance, speckle-tracking echocardiography, brain natriuretic peptide, and exercise stress test can optimize the timing of surgery for asymptomatic patients and judge the asymptomatic of PMR.
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  • 文章类型: Journal Article
    败血症性心肌病具有广泛的表现,与收缩和/或舒张功能障碍有关。目前尚无证据表明败血症患者的左心室(LV)收缩功能障碍与死亡率之间存在关联。
    我们进行了系统评价和荟萃分析,以研究组织多普勒成像(TDI)获得的收缩期波(s\')与脓毒症患者死亡率之间的关系。次要结果是LV射血分数与死亡率的关联。
    在主要分析中,我们共纳入了13项研究(1197例患者,死亡率39.9%);幸存者和非幸存者之间的总体s波没有显着差异(标准化平均差0.20,95%置信区间-0.18,0.59)。根据TDI抽样的区域标准,在亚组分析中也证实了这一结果。仅包括脓毒性休克患者的事后分析证实,s波与死亡率无关。一些敏感性分析证实了这些结果。我们没有发现发表偏倚的证据。次要分析(11项研究,1081名患者,死亡率36.7%)显示左心室射血分数与死亡率无关(平均差0.98,95%置信区间-1.79,3.75)。
    在脓毒症患者中,通过TDIs波评估,死亡率和左心室收缩功能之间没有关联。
    Septic induced cardiomyopathy has a wide spectrum of presentation, being associated with systolic and/or diastolic dysfunction. There is currently no evidence of association between left ventricular (LV) systolic dysfunction and mortality in septic patients.
    We conducted a systematic review and meta-analysis to investigate the association between systolic wave (s\') obtained with Tissue Doppler Imaging (TDI) and mortality in septic patients. Secondary outcome was the association of LV ejection fraction with mortality.
    In the primary analysis we included a total of 13 studies (1197 patients, mortality 39.9%); overall s\' wave was not significantly different between survivors and non-survivors (Standardized Mean Difference 0.20, 95%Confidence-Interval - 0.18, 0.59). This result was confirmed also in sub-groups analyses according to regional criteria of TDI sampling. A post-hoc analysis including only septic shock patients confirmed that s\' wave was not associated with mortality. Several sensitivity analyses confirmed these results. We found no evidence of publication bias. The secondary analysis (11 studies, 1081 patients, mortality 36.7%) showed that LV ejection fraction was not associated with mortality (Mean Difference 0.98, 95% Confidence-Interval - 1.79,3.75).
    There is no association between mortality and LV systolic function as evaluated by TDI s\' wave in septic patients.
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  • 文章类型: Journal Article
    Echocardiography, as a noninvasive hemodynamic evaluation technique, is frequently used in critically ill patients. Different opinions exist regarding whether it can be interchanged with traditional invasive means, such as the pulmonary artery catheter thermodilution (TD) technique. This systematic review aimed to analyze the consistency and interchangeability of cardiac output measurements by ultrasound (US) and TD. Five electronic databases were searched for studies including clinical trials conducted up to June 2019 in which patients\' cardiac output was measured by ultrasound techniques (echocardiography) and TD. The methodological quality of the included studies was evaluated by two independent reviewers who used the Quality Assessment of Diagnostic Accuracy Studies-2 (QUADAS-2), which was tailored according to our systematic review in Review Manager 5.3. A total of 68 studies with 1996 patients were identified as eligible. Meta-analysis and subgroup analysis were used to compare the cardiac output (CO) measured using the different types of echocardiography and different sites of Doppler use with TD. No significant differences were found between US and TD (random effects model: mean difference [MD], -0.14; 95% confidence interval, -0.30 to 0.02; P = 0.08). No significant differences were observed in the subgroup analyses using different types of echocardiography and different sites except for ascending aorta (AA) (random effects model: mean difference [MD], -0.37; 95% confidence interval, -0.74 to -0.01; P = 0.05) of Doppler use. The median of bias and limits of agreement were -0.12 and ±0.94 L/min, respectively; the median of correlation coefficient was 0.827 (range, 0.140-0.998). Although the difference in CO between echocardiography by different types or sites and TD was not entirely consistent, the overall effect of meta-analysis showed that no significant differences were observed between US and TD. The techniques may be interchangeable under certain conditions.
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  • 文章类型: Case Reports
    Uterine intravenous leiomyomatosis is an uncommon tumor, usually arising from the uterus, with nodular masses which extend intravascularly over variable distances and may reach the inferior vena cava, right atrium, and pulmonary arteries. Early diagnosis and surgical intervention are crucial as intracardiac leiomyomatosis not only causes cardiac symptoms but may result in pulmonary embolism and sudden death. Complete tumor resection is key in disease management, thus rendering cardiac-extending uterine intravenous leiomyomatosis one of the most challenging conditions for surgical treatment. The use of interventional radiology procedures can facilitate the surgical approach. We report the case of a massive pelvic recurrence of uterine leiomyomatosis with intracardiac extension and pulmonary embolism, analyzing management and surgical outcomes, highlighting the role of interventional radiology during the therapeutic pathway. Nonetheless, there are currently very few data available concerning the use of interventional radiology procedures in the therapeutic strategy of uterine intravenous leiomyomatosis with intracardiac extension.
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  • 文章类型: Journal Article
    The aim of this study was to assess the association between left ventricular mechanical dispersion (LVMD) and the incidence of ventricular arrhythmias (VAs).
    Recent, mainly single-center, studies have demonstrated that LVMD assessed using speckle tracking might be a powerful marker in risk stratification for VA. A systematic review and meta-analysis provides a means of understanding the prognostic value of this parameter, relative to other parameters, the most appropriate cutoff for designating risk.
    A systemic review of studies reporting the predictive value of LVMD for VA was undertaken from a search of MEDLINE and Embase. VA events were defined as sudden cardiac death, cardiac arrest, documented ventricular tachyarrhythmia, and appropriate implantable cardioverter-defibrillator (ICD) therapy. Hazard ratios were extracted from univariate and multivariate models reporting on the association of LVMD and VA and described as pooled estimates with 95% confidence intervals. In a meta-analysis, the predictive value of LVMD was compared with that of left ventricular ejection fraction and global longitudinal strain.
    Among 3,198 patients in 12 published studies, 387 (12%) had VA events over follow-up ranging from 17 to 70 months. Patients with VAs had greater LVMD than those without (weighted mean difference -20.3 ms; 95% confidence interval: -27.3 to -13.2; p < 0.01). Each 10 ms increment of LVMD was significantly and independently associated with VA events (hazard ratio: 1.19; 95% confidence interval: 1.09 to 1.29; p < 0.01). The predictive value of LVMD was superior to that of left ventricular ejection fraction or global longitudinal strain.
    LVMD assessed using speckle tracking provides important predictive value for VA in patients with a number of cardiac diseases and appears to have superior predictive value over left ventricular ejection fraction and global longitudinal strain for risk stratification.
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