Abstract：
:To determine whether diastolic ventricular interdependence mechanisms would act in the presence of an open pericardial sac, as during cardiac surgery, moderate acute right ventricle afterload increases were applied to eight dogs with the chest and pericardium open while left ventricular filling dynamics were being assessed by Doppler echocardiography. Dogs were studied under basal conditions and after acute banding of the main pulmonary artery tightened to produce a 100% increase in right ventricular systolic pressure. With banding, the left ventricular filling velocity ratio (E/A), as assessed by Doppler echocardiography of mitral inflow, changed from a baseline value of 1.32 +/- 0.05 to 1.16 +/- 0.03 (p < 0.02), suggesting a restrictive pattern to early left ventricular filling, which is differed to that during the second half of diastole. Isovolumic relaxation time, measured as the time interval between aortic valve closure and mitral valve opening, assessed by M-mode echocardiography of both valves, was prolonged, though not significantly, from 63.3 +/- 2.5 ms to 69.4 +/- 2.9 ms, by banding of the pulmonary artery. E wave deceleration time, a filling variable influenced by chamber pressure/volume relations, was shortened by pulmonary artery banding, changing from 75.1 +/- 1.7 ms to 68.0 +/- 1.8 ms (p < 0.01). It was concluded that pressure loads applied to the right ventricle restricted early left ventricular filling. Prolonged relaxation and altered pressure-volume chamber relations were the diastolic interdependence mechanisms involved that proved to be acting even under open pericardium conditions.
journal_name
Pediatr Cardioljournal_title
Pediatric cardiologyauthors
Fragata JI,Areias JCdoi
10.1007/BF02505087subject
Has Abstractpub_date
1996-03-01 00:00:00pages
77-81issue
2eissn
0172-0643issn
1432-1971journal_volume
17pub_type
杂志文章abstract：OBJECTIVES:The aim of this article is to examine the frequency, timing of formation of aneurysm of the ventricular membranous septum (AVMS), and prognosis in patients with a perimembranous ventricular septal defect (VSD). PATIENTS:One hundred forty-eight patients were diagnosed with a perimembranous VSD within 90 days...
journal_title：Pediatric cardiology
pub_type： 杂志文章
doi：10.1007/s00246-003-0572-6
更新日期：2004-07-01 00:00:00
abstract：:Adult studies suggest a better functional outcome after aortic valve replacement with a pulmonary autograft compared with mechanical or homograft valves. Little is known about functional results after Ross surgery in growing children. This study reports formal exercise stress echocardiographic data from 26 pediatric R...
journal_title：Pediatric cardiology
pub_type： 杂志文章
doi：10.1007/s00246-012-0218-7
更新日期：2012-06-01 00:00:00
abstract：:Twelve years after an apparently successful surgical correction of infradiaphragmatic (obstructed) total anomalous pulmonary venous drainage, a 12-year-old boy developed evidence of pulmonary artery hypertension secondary to pulmonary venous obstruction due to an apparent lack of growth at the anastomotic site. ...
journal_title：Pediatric cardiology
pub_type： 杂志文章
doi：10.1007/BF02080561
更新日期：1988-01-01 00:00:00
abstract：:Ejection fraction (EF) and fractional shortening (FS) are standard methods of quantifying left ventricular (LV) systolic function. 2D global longitudinal strain (2D GLS) is a well-established, but underutilized method for LV function quantification. The aim of this study was to assess precision of GLS compared to EF &...
journal_title：Pediatric cardiology
pub_type： 杂志文章
doi：10.1007/s00246-019-02243-8
更新日期：2020-01-01 00:00:00
abstract：:Noninvasive measurement of cardiac output (CO) and particularly stroke volume (SV) remain difficult but potentially valuable. These variables can be particularly challenging to measure in children with congenital heart disease (CHD). Impedance cardiography (IC) is a technique shown to be accurate in measuring SV in ad...
journal_title：Pediatric cardiology
pub_type： 杂志文章
doi：10.1007/s00246-016-1456-x
更新日期：2016-12-01 00:00:00
abstract：:To determine the influence of heart rate (HR) on systolic time intervals (STI) in neonates, serial measurements of right ventricular (RVSTI) and left ventricular systolic time intervals (LVSTI) were made on 30 healthy term newborn infants at age 4-8 h, 24-30 h, eight days, and four weeks. STI was related to HR and age...
journal_title：Pediatric cardiology
pub_type： 杂志文章
doi：10.1007/BF02336549
更新日期：1985-01-01 00:00:00
abstract：BACKGROUND:The optimal surgical strategy for pulmonary atresia with ventricular septal defect (PA/VSD) in neonates and young infants is controversial. Staged repair may be associated with a higher risk of inter-stage mortality, while primary repair may lead to frequent post-repair re-interventions. METHODS:From 2004 t...
journal_title：Pediatric cardiology
pub_type： 杂志文章
doi：10.1007/s00246-020-02352-9
更新日期：2020-06-01 00:00:00
abstract：:Positron emission tomography (PET) myocardial perfusion imaging has higher spatial resolution than conventional single photon emission computed tomography (SPECT) imaging and allows accurate and reproducible quantification of myocardial blood flow (MBF). In this article, we describe the role of PET myocardial perfusio...
journal_title：Pediatric cardiology
pub_type： 杂志文章
doi：10.1007/s00246-002-0282-5
更新日期：2003-03-01 00:00:00
abstract：:Transcatheter closure of atrial septal defects (ASDs) has become a routine procedure in many countries of the world. It spares many patients cardiac surgery and has proven efficacy in long-term studies. Device improvements have resulted in a continuous reduction of complications and of residual shunt frequency. ASD cl...
journal_title：Pediatric cardiology
pub_type： 杂志文章
doi：10.1007/s00246-005-1011-7
更新日期：2005-05-01 00:00:00
abstract：:A neonate with pulmonary interstitial glycogenosis, pulmonary hypertension, and hypertrophic cardiomyopathy is described. The fatal outcome for this patient contrasts with the reported favorable prognosis associated with isolated pulmonary interstitial glycogenosis. To the authors' knowledge, the association of pulmon...
journal_title：Pediatric cardiology
pub_type： 杂志文章
doi：10.1007/s00246-012-0311-y
更新日期：2013-02-01 00:00:00
abstract：:Prior to initiation of a formal screening program, 30 % of patients referred for device closure of an atrial septal defect (ASD) at our institution had atrial septal anatomy which precluded ASD device closure. This resulted in inefficiencies in workflow, staff utilization, and inconvenience for families. Our objective...
journal_title：Pediatric cardiology
pub_type： 杂志文章
doi：10.1007/s00246-015-1135-3
更新日期：2015-08-01 00:00:00
abstract：:This report describes an unusual case with tortuosity of the great vessels in a neonate who presented at birth with cyanosis. The diagnosis was made with magnetic resonance imaging (MRI), then confirmed by genetic analysis. ...
journal_title：Pediatric cardiology
pub_type： 杂志文章
doi：10.1007/s00246-009-9486-2
更新日期：2009-11-01 00:00:00
abstract：:It is shown that phosphodiesterase type 5 (PDE5) inhibitors such as sildenafil can modulate pulmonary arterial hypertension (PAH) via increasing the level of guanosine-3,5-cyclic monophosphate (cGMP) and decreases pulmonary artery pressure (PAP). In this study we determined the effectiveness of sildenafil and compared...
journal_title：Pediatric cardiology
pub_type： 临床试验,杂志文章
doi：10.1007/s00246-007-9139-2
更新日期：2008-05-01 00:00:00
abstract：:Cardiac surgery for congenital heart disease often necessitates a period of myocardial ischemia during cardiopulmonary bypass and cardioplegic arrest, followed by reperfusion after aortic cross-clamp removal. In experimental models, myocardial ischemia-reperfusion is associated with significant oxidative stress and ve...
journal_title：Pediatric cardiology
pub_type： 杂志文章
doi：10.1007/s00246-016-1345-3
更新日期：2016-04-01 00:00:00
abstract：:Computed tomographic angiography (CTA) and cardiac catheterization are useful adjuncts to echocardiography for delineating cardiovascular anatomy in pediatric patients. These studies require ionizing radiation, and it is paramount to understand the amount of radiation pediatric patients receive when these tests are pe...
journal_title：Pediatric cardiology
pub_type： 杂志文章
doi：10.1007/s00246-012-0486-2
更新日期：2013-03-01 00:00:00
abstract：BACKGROUND:In 2017, the AHA published revised guidelines for the diagnosis of Kawasaki disease (KD). In the absence of compelling data supporting or refuting the utility of lack of tapering (LT) and perivascular brightness (PB), expert panel consensus removed LT and PB from consideration. We hypothesize that LT and PB ...
journal_title：Pediatric cardiology
pub_type： 杂志文章
doi：10.1007/s00246-018-1971-z
更新日期：2019-01-01 00:00:00
abstract：:In 19 consecutive children with aortic valve stenosis, the left ventricle was entered retrogradely with a Gensini catheter guided by a tip-deflector guidewire which could produce any desirable degree of curvature at its tip. In all patients, the aortic valve was retrogradely traversed for measurement of the pressure g...
journal_title：Pediatric cardiology
pub_type： 杂志文章
doi：10.1007/BF02328955
更新日期：1986-01-01 00:00:00
abstract：:For neonates with right atrial isomerism (RAI), functional single ventricle (f-SV), and obstructive total anomalous pulmonary venous connection (TAPVC), primary TAPVC repair (TAPVCR) has a poor outcome. At our hospital, the survival rate at 1 year of such neonates undergoing primary TAPVCR between 1999 and 2010 (TAPVC...
journal_title：Pediatric cardiology
pub_type： 杂志文章,收录出版
doi：10.1007/s00246-018-1902-z
更新日期：2018-10-01 00:00:00
abstract：:A 6-year-old girl was found to have a combination of accessory mitral valve tissue and subaortic membrane. The association caused left ventricular outflow tract obstruction leading to severe left ventricular dysfunction. Surgical relief of the obstruction resulted in immediate improvement of ventricular function. ...
journal_title：Pediatric cardiology
pub_type： 杂志文章
doi：10.1007/s00246-001-5023-7
更新日期：2002-01-01 00:00:00
abstract：:Anomalous origin of the left coronary artery from the pulmonary artery (ALCAPA) is a rare condition. The majority of cases present with impaired left ventricular function. We report on a premature infant who was diagnosed at a gestational age near term with ALCAPA during routine cardiac examination. The patient showed...
journal_title：Pediatric cardiology
pub_type： 杂志文章
doi：10.1007/s00246-004-0878-z
更新日期：2006-03-01 00:00:00
abstract：:The most common modes of medical education for congenital heart disease (CHD) rely heavily on 2-dimensional imaging. Three-dimensional (3D) printing technology allows for the creation of physical cardiac models that can be used for teaching trainees. 3D printed cardiac models were created for the following lesions: pu...
journal_title：Pediatric cardiology
pub_type： 杂志文章
doi：10.1007/s00246-019-02146-8
更新日期：2019-08-01 00:00:00
abstract：:Aortic aneurysm may develop after surgery for coarctation of aorta especially patch aortoplasty. The size of patch and of adjacent native aortic wall was analyzed to determine whether aortic dilatation represents a true aneurysm. Electron beam tomography (EBT) was done on 19 patients, three months to 17.5 years after ...
journal_title：Pediatric cardiology
pub_type： 杂志文章
doi：10.1007/s00246-002-0186-4
更新日期：2003-01-01 00:00:00
abstract：:The objective of this study was to compare histopathological changes in hypoplastic left heart syndrome right ventricles (RV) of patients undergoing Sano and modified Blalock-Taussig (MBT) shunt and correlate them with echocardiographic findings. Myocardial tissue samples were obtained from hearts with Sano or MBT shu...
journal_title：Pediatric cardiology
pub_type： 杂志文章
doi：10.1007/s00246-012-0462-x
更新日期：2013-02-01 00:00:00
abstract：:We report the case of a fetus diagnosed at 24 weeks' gestation with complete heart block associated with maternal collagen vascular disease and Sjögren's antibody. Serial fetal echocardiograms noted increased echogenicity along the tricuspid and mitral valves without insufficiency. Postnatally, severe tricuspid insuff...
journal_title：Pediatric cardiology
pub_type： 杂志文章
doi：10.1007/BF00800677
更新日期：1994-07-01 00:00:00
abstract：:We report a case of a 12-year-old boy with severe congenital aortic stenosis in whom magnetic resonance imaging (MRI) with delayed contrast enhancement demonstrated extensive subendocardial hyperenhancement within the left ventricle. The hyperenhancement was confirmed to be subendocardial infarct and fibrosis by histo...
journal_title：Pediatric cardiology
pub_type： 杂志文章
doi：10.1007/s00246-005-5891-3
更新日期：2006-05-01 00:00:00
abstract：:We present a case of congenital pulmonary systemic collateral vein associated with truncus arteriosus. Pulmonary systemic collateral vein with nonobstructed left atrial egress is different from those with obstructed left atrial egress in that it is functionally redundant. Including this case, 8 patients among 33 repor...
journal_title：Pediatric cardiology
pub_type： 杂志文章,评审
doi：10.1007/s00246-002-0439-2
更新日期：2004-01-01 00:00:00
abstract：:Antenatal diagnosis of right heart enlargement has a wide spectrum of differential diagnosis from maternal, placental and fetal causes, and outcomes of all are not known. Coarctation of the aorta is in the differential diagnosis of right heart enlargement. In our study, we focused to measure multiple cardiac dimension...
journal_title：Pediatric cardiology
pub_type： 杂志文章
doi：10.1007/s00246-015-1168-7
更新日期：2015-10-01 00:00:00
abstract：:We report a patient with tricuspid atresia after total cavopulmonary connection who developed significant mitral valve regurgitation. Doppler myocardial echocardiography tracings showed "pseudonormalization" of diastolic velocities. After successful surgical reconstruction of the mitral valve, the diastolic myocardial...
journal_title：Pediatric cardiology
pub_type： 杂志文章
doi：10.1007/s00246-006-1283-6
更新日期：2006-07-01 00:00:00
abstract：:Ultrasound Doppler was used to establish time of ductal closure, normal values for blood flow velocity in the pulmonary artery (PA), and time interval between pulmonary valve closure (Pc) and tricuspid valve opening (To) in 37 healthy neonates. Ductal closure had occurred in 23% of the children within 12 h after deliv...
journal_title：Pediatric cardiology
pub_type： 杂志文章
doi：
更新日期：1986-01-01 00:00:00
abstract：:The commonly used Darling classification for total anomalous pulmonary venous connection (TAPVC) consists of supracardiac, cardiac, infracardiac, and mixed types (Craig et al., Lab Invest 6:44-64, 1967). In supracardiac TAPVC, the common pulmonary vein drains superiorly into the left innominate vein, the superior vena...
journal_title：Pediatric cardiology
pub_type： 杂志文章
doi：10.1007/s00246-009-9509-z
更新日期：2009-10-01 00:00:00
