Helping You Find Full Text Journal Articles

Search Results:

'Cardiac Catheterization Left Heart' (14980)


Feb
2018

In 1954-1955, the author served as a research fellow in the cardiopulmonary laboratory led by André Cournand at Bellevue Hospital in New York. Cournand was a pulmonary physiologist and a professor of medicine at Columbia University. In his quest to obtain mixed venous blood to calculate pulmonary blood flow, he catheterized the right atrium, right ventricle, and pulmonary artery in patients and also measured the pressures in these chambers.

View Full Text PDF Listings View primary source full text article PDFs.

Feb
2018

There are multiple proposed mechanisms for the pathophysiology of heart failure (HF) with preserved ejection fraction (HFpEF). We hypothesize that coronary microvascular dysfunction is common in these patients.
In a prospective, observational study, patients undergoing cardiac catheterization with HFpEF (left ventricular (LV) ejection fraction {greater than or equal to} 50% and with clinical HF), were compared to similar patients without HFpEF.

View Full Text PDF Listings View primary source full text article PDFs.

Feb
2018

Aim of study was to examine experimentally the adult female hypertensive heart in order to determine the role of ovary function in the response of the heart to salt-dependent hypertension. Dahl salt-sensitive rats, age 12 weeks, with/without ovariectomy were fed a standard (0.3% NaCl) or high-salt diet (8%) for 16 weeks.

View Full Text PDF Listings View primary source full text article PDFs.

Dec
2017

Iatrogenic atrial septal defects caused by cardiac surgery are rare complications that are traditionally repaired through reoperations; unfortunately, reoperations are accompanied by high risk and trauma.
Herein, we report a rare case of a huge atrial septal defect after mitral and aortic mechanical valve replacement.
Transesophageal echocardiography revealed a 20 × 33 mm atrial septal defect with a mainly left-to-right shunt and bidirectional shunt.

View Full Text PDF Listings View primary source full text article PDFs.

Jan
2018

We assess the mid-term outcomes of ultrathin biodegradable polymer double stenting using a very minimal crushing (Nano-Crush) technique in large complex coronary bifurcation.
Complex bifurcations have been suggested to be better approached by a planned double stent technique.
Two hundred and five consecutive patients (107 males and 98 females) referred for large complex coronary bifurcation percutaneous coronary interventions were enrolled.

View Full Text PDF Listings View primary source full text article PDFs.

Mar
2018

Postmyocardial infarction ventricular septal defect (VSD) is a rare complication that can lead to rapid hemodynamic patient decompensation. The type of VSD repair relies on several factors including: size, location, timing and surgical expertise.
A 63-year-old man with a ST-elevation myocardial infarction underwent percutaneous coronary intervention of the right coronary artery.

View Full Text PDF Listings View primary source full text article PDFs.

Jan
2018

Determination of cardiac output (CO) is essential in diagnosis and management of heart failure (HF). The gold standard to obtain CO is invasive assessment via thermodilution (TD). Noninvasive pulse contour analysis (NPCA) is supposed as a new method of CO determination.

View Full Text PDF Listings View primary source full text article PDFs.

Dec
1969

The clinical relevance of non-invasively derived pulmonary arterial pressure (PAP) by Doppler echocardiography (DE) has been questioned in the past. However, transthoracic echocardiography is used as a cornerstone examination for patients with dyspnea and suspected pulmonary hypertension (PH). This study aimed to evaluate the prognostic value of non-invasive assessed PAP in a large population of patients with known or suspected cardiopulmonary disease.

View Full Text PDF Listings View primary source full text article PDFs.

Dec
1969

We aimed to evaluate the effect of intramyocardial injections of autologous VEGF-A-stimulated adipose-derived stromal cells (ASCs) in patients with refractory angina. MyStromalCell trial is a randomized double-blind placebo-controlled study including sixty patients with CCS/NYHA class II-III, left ventricular ejection fraction > 40%, and at least one significant coronary artery stenosis. Patients were treated with ASC or placebo in a 2 : 1 ratio.

View Full Text PDF Listings View primary source full text article PDFs.

Jan
2018

According to recent studies, lung uptake of iodine-123-metaiodobenzylguanidine (I-MIBG) is impaired in many lung diseases and low lung uptake ofI-MIBG suggests endothelial dysfunction of the pulmonary artery.I-MIBG scintigraphy in patients with pulmonary hypertension (PH) has not yet been clinically evaluated. We hypothesized that the lung uptake ofI-MIBG is reduced in patients with PH and differs among PH subtypes.

View Full Text PDF Listings View primary source full text article PDFs.

Jan
2018

The use of unilateral pulmonary artery occlusion (UPAO) test for the preoperative evaluation of pneumonectomy was reported in adult patients. On the contrary, in infants, no strategies have yet been recommended to predict hemodynamics after pneumonectomy, nor has use of the UPAO test been reported. We describe the first case of infant with abnormal pulmonary circulation in whom successful pneumonectomy was performed after preoperative evaluation using UPAO test.

View Full Text PDF Listings View primary source full text article PDFs.

Jan
2018

Cerebral oximetry using near-infrared spectroscopy is a noninvasive optical technology to detect cerebral hypoxia-ischemia and develop interventions to prevent and ameliorate hypoxic brain injury. Cerebral oximeters are calibrated and validated by comparison of the near-infrared spectroscopy-measured cerebral O2 saturation (SctO2) to a "field" or reference O2 saturation (REF CX) calculated as a weighted average from arterial and jugular bulb oxygen saturations. In this study, we calibrated and validated the second-generation, 5 wavelength, FORE-SIGHT Elite with the medium sensor (source-detector separation 12 and 40 mm) for measurement of SctO2 in children with congenital heart disease.

View Full Text PDF Listings View primary source full text article PDFs.

Jan
2018

- Poor fitness in middle age is a risk factor for heart failure, particularly heart failure with a preserved ejection fraction. The development of heart failure with a preserved ejection fraction is likely mediated through increased left ventricular (LV) stiffness, a consequence of sedentary aging. In a prospective, parallel group, randomized controlled trial, we examined the effect of 2 years of supervised highintensity exercise training on LV stiffness.

View Full Text PDF Listings View primary source full text article PDFs.

Jan
2018

At our institution, we perform bilateral pulmonary artery banding (BPAB) as the first-stage palliation for interrupted aortic arch (IAA) with low birth weight or severe subaortic stenosis (SAS). The present study aimed to identify factors that may influence the decision regarding the type of second-stage operation, that is, univentricular palliation or biventricular repair, in these patients.
Cardiac catheterization and angiographic data of nine patients with IAA who underwent initial BPAB and subsequent univentricular or biventricular repair were retrospectively analyzed.

View Full Text PDF Listings View primary source full text article PDFs.

Mar
2018

Diabetes mellitus is associated with left-sided myocardial remodeling in heart failure with preserved ejection fraction (HFpEF). Little is known about the impact of diabetes mellitus on right ventricular (RV) function in HFpEF. We therefore studied the relation between diabetes mellitus and RV dysfunction in HFpEF.

View Full Text PDF Listings View primary source full text article PDFs.

Jan
2018

It is widely recognized that overt hyper- as well as hypothyroidism are potential causes of heart failure (HF). Additionally it has been recently reported that subclinical hypothyroidism (sub-hypo) is associated with atherosclerosis, development of HF, and cardiovascular death. We aimed to clarify the effect of sub-hypo on prognosis of HF, and underlying hemodynamics and exercise capacity.

View Full Text PDF Listings View primary source full text article PDFs.

Mar
2018

Heart transplant recipients are at increased risk for atherosclerosis and cardiac allograft vasculopathy, both initially presenting as intimal thickening. We aimed to determine the presence, extent, and anatomical characteristics of intimal thickness at coronary bifurcations in children using OCT. We measured the intimal thickness of coronary arteries in pediatric transplant recipients using OCT during routine cardiac catheterization.

View Full Text PDF Listings View primary source full text article PDFs.

Dec
2017

Left ventricular end-diastolic pressure (LVEDP) is an easily obtained, physiologically integrative measure of total LV function. LVEDP may be a useful prognostic measure in patients with acute myocardial infarction and utilised to guide medical therapy and assess risk for post myocardial infarction heart failure. To assess the utility of LVEDP as a prognostic measure in patients presenting with acute myocardial infarction.

View Full Text PDF Listings View primary source full text article PDFs.

Dec
2017

Safe and successful radiofrequency catheter ablation depends on creation of transmural lesions without collateral injury to contiguous structures. Near-field ultrasound (NFUS) imaging through transducers in the tip of an ablation catheter may provide important information about catheter contact, wall thickness, and ablation lesion formation.
NFUS imaging was performed using a specially designed open-irrigated radiofrequency ablation catheter incorporating 4 ultrasound transducers.

View Full Text PDF Listings View primary source full text article PDFs.

Mar
2018

Although echocardiographic-Doppler cardiac index (CI) assessment is widely used to guide heart failure management in patients with biventricular circulation, this application has not been studied in the Fontan population. The objective of this study was to: (1) determine the correlation between Doppler and cardiac catheterization CI calculation; (2) determine the association between Doppler CI and the occurrence of Fontan failure.
Retrospective review of adult Fontan patients followed at Mayo Clinic Adult Congenital Heart Disease program, 1994-2015.

View Full Text PDF Listings View primary source full text article PDFs.

Dec
2017

The detection of increased left ventricular (LV) chamber stiffness may play an important role in assessing cardiac patients with potential but not overt heart failure. A non-invasive method to estimate it is not established. We investigated whether the echocardiographic backward/forward flow volume ratio from the left atrium (LA) during atrial contraction reflects the LV chamber stiffness.

View Full Text PDF Listings View primary source full text article PDFs.

Dec
2017

Speckle tracking echocardiography (STE) for two-dimensional (2D) strain analysis is a new tool to assess myocardial function. The aim of this study was to assess right atrial (RA) function using STE in patients with an atrial septal defect (ASD) before and one month after percutaneous closure.
We prospectively examined 32 consecutive patients (nine male, 23 female) who underwent percutaneous transcatheter closure of a secundum ASD between June 2013 and December 2015.

View Full Text PDF Listings View primary source full text article PDFs.

Dec
2017

Migraine is a prevalent and disabling disorder. Patent foramen ovale (PFO) has been associated with migraine, but its role in the disorder remains poorly understood.
This study examined the efficacy of percutaneous PFO closure as a therapy for migraine with or without aura.

View Full Text PDF Listings View primary source full text article PDFs.

Nov
2017

Anomalous origin of the left coronary artery from the pulmonary artery (ALCAPA) is a rare congenital cardiac malformation. We report three cases of ALCAPA who survived to adulthood. The first case was a 51-year-old woman who complained of typical chest pain that was diagnosed with ALCAPA using cardiac catheterization and coronary computed tomographic angiography (CTA).

View Full Text PDF Listings View primary source full text article PDFs.

Dec
2017

Caveolin-1 (Cav1)mice display impaired development of left ventricular pressure and increased left ventricular wall thickness but no dilated ventricle; these are typical findings in patients with heart failure with preserved ejection fraction (HfpEF). Aiming to clarify if dysfunctional endothelial nitric oxide synthase (eNOS) influences cardiomyocyte contractility, cardiac conduction system, or afterload/vascular resistance, we studied Cav1/eNOSmice.
Cardiac function was assessed in vivo by pressure-volume-catheterization of the left ventricle, echocardiography and electrocardiography.

View Full Text PDF Listings View primary source full text article PDFs.

Nov
2017

The combination of autologous mesenchymal stem cells (MSCs) and cardiac stem cells (CSCs) synergistically reduces scar size and improves cardiac function in ischemic cardiomyopathy. Whereas allogeneic (allo-)MSCs are immunoevasive, the capacity of CSCs to similarly elude the immune system remains controversial, potentially limiting the success of allogeneic cell combination therapy (ACCT).
This study sought to test the hypothesis that ACCT synergistically promotes cardiac regeneration without provoking immunologic reactions.

View Full Text PDF Listings View primary source full text article PDFs.

Nov
2017

Little is known regarding a correlation of hemodynamics at rest or exercise capacity with echocardiographic parameters in patients with pulmonary hypertension (PH). To clarify these potential correlations, we performed transthoracic echocardiography, right heart catheterization, and cardiopulmonary exercise testing in 53 patients with pulmonary arterial hypertension (PAH) and chronic thromboembolic pulmonary hypertension (CTEPH). Left ventricular end-diastolic dimension (LVDd), early diastolic velocity of the septal mitral annulus (septal e'), tricuspid regurgitation peak gradient (TRPG), and tricuspid annular plane systolic excursion (TAPSE) were significantly correlated with cardiac index (LVDd; r = 0.

View Full Text PDF Listings View primary source full text article PDFs.

Nov
2017

We present the case of a 69-year-old patient who was referred to the Department of Echocardiography for surgical treatment of severe tricuspid valve regurgitation (TVR) with advanced congestive heart failure. In 2013 the patient underwent unsuccessful percutaneous ablation for permanent atrial fibrillation. In 2015, following numerous episodes of atrial fibrillation and congestive heart failure with left pleural effusion, the patient was admitted to another center.

View Full Text PDF Listings View primary source full text article PDFs.

Nov
2017

The goal of this study was to measure arterial amino acid levels in patients with chronic heart failure (CHF), and relate them to left ventricular function and disease severity. Amino acids (AAs) play a crucial role for heart protein-energy metabolism. In heart failure, arterial AAs, which are the major determinant of AA uptake by the myocardium, are rarely measured.

View Full Text PDF Listings View primary source full text article PDFs.

Jan
2018

The cerebral white matter hyperintensity (WMH) is frequently noted in patients with chronic heart disease. Long-term alteration of cardiac hemodynamics might have an influence on the mechanism of cerebral WMH.
To investigate the association between chronically altered cardiac hemodynamics and severity of cerebral WMH in patients with chronic valvular heart disease.

View Full Text PDF Listings View primary source full text article PDFs.

Dec
2017

The cardiac catheterization laboratory is advancing medicine by performing procedures on patients who would usually require sternotomy and cardiopulmonary bypass. These procedures are done percutaneously, allowing them to be performed on patients considered inoperable. Patients have compromised cardiovascular function or advanced age.

View Full Text PDF Listings View primary source full text article PDFs.

Dec
2017

Riociguat has been approved for use in adults with pulmonary arterial hypertension (PAH) or chronic thromboembolic pulmonary hypertension. No clinical data on its therapeutic use in children with PAH are currently available. We report the case of a now four-year-old boy who initially presented at the age of 10 months with suprasystemic pulmonary hypertension (PH) and right ventricular (RV) failure, vomiting, peripheral cyanosis, and failure to thrive.

View Full Text PDF Listings View primary source full text article PDFs.

Feb
2018

The purpose of this study was to investigate the associations between clinical factors and cardiac function as measured by pressure-volume loops (PVLs) in a pediatric heart transplant cohort.
Patients (age < 20 years) who underwent heart transplantation presenting for a clinically indicated catheterization were enrolled. PVLs were recorded using microconductance catheters (CD Leycom, Zoetermeer, Netherlands).

View Full Text PDF Listings View primary source full text article PDFs.

Oct
2017

Congenital cardiac malformations with high pulmonary blood flow and pressure due to left-to-right shunts are usually repaired in early infancy for both the benefits of early relief of heart failure and the fear that the concomitant pulmonary hypertension may become irreversible unless these defects are corrected at an early age. Age, however, has been a poor predictor of irreversibility of pulmonary hypertension in our experience, which is presented here.
A retrospective observational study.

View Full Text PDF Listings View primary source full text article PDFs.

Oct
2017

The phase 4 COMPASS-3 study evaluated whether a singular endpoint produces clinically meaningful outcomes in patients with pulmonary arterial hypertension (PAH). The relationship between cardiac magnetic resonance imaging (cMRI)-derived parameters and right heart catheterization (RHC) measurements was also examined. In COMPASS-3 (ClinicalTrials.

View Full Text PDF Listings View primary source full text article PDFs.

Nov
2017

The double-switch operation for congenitally corrected transposition of the great arteries, in which the morphologic left ventricle is restored to the systemic circulation, is an effective surgical option. This case report describes an atrial switch technique without using supplemental material during the double-switch operation for congenitally corrected transposition of the great arteries associated with persistent left superior vena cava, with the systemic venous blood flow rerouted through the enlarged coronary sinus.

View Full Text PDF Listings View primary source full text article PDFs.

Nov
2017

Cor triatriatum sinister is a rare congenital lesion encountered in children. It consists of a fibromuscular membrane that separates the left atrium into two chambers resulting in a triatrial heart and often occurs with other structural cardiac anomalies. The acquired form is uncommon and has only been reported after orthotopic heart transplantation or as a complication of infective endocarditis in adults.

View Full Text PDF Listings View primary source full text article PDFs.

Nov
2017

Off-pump bilateral bidirectional Glenn (b-BDG) poses a surgical challenge and may add complexity to the postoperative outcome especially regarding uniformity of the anastomosis and central pulmonary artery growth. Herein, we report early- and mid-term outcomes after off-pump b-BDG without using superior vena cava decompression techniques.
Ninety-seven consecutive patients, between 2009 and 2014, were included in this prospective study.

View Full Text PDF Listings View primary source full text article PDFs.

Oct
2017

Although improvement in cardiac output and hemodynamic parameters is routinely demonstrated in patients implanted with continuous-flow left ventricular assist devices (CF-LVADs), improvement in exercise capacity is inconsistently seen. Our purpose was to determine whether native cardiac factors, LVAD factors, or comorbid factors were associated with lack of improvement. Review of all patients undergoing preimplant cardiopulmonary exercise testing (CPET) and CPET on LVAD therapy at one institution was performed between 2007 and 2014 (n = 49).

View Full Text PDF Listings View primary source full text article PDFs.

Oct
2017

To study the characteristics and misdiagnosis of infective endocarditis (IE).Clinical and pathological data of 15 IE patients diagnosed by autopsy were collected, compared with the cohort of 29 regular IE cases.In the autopsy patients, IE in the left heart was predominat (14/15, 93.

View Full Text PDF Listings View primary source full text article PDFs.

Sep
2017

To develop a document by Brazilian Cardiovascular Imaging Department (DIC) and the European Association of Cardiovascular Imaging (EACVI) to review and summarize the most recent evidences about the non-invasive assessment of patients with Chagas disease, with the intent to set up a framework for standardized cardiovascular imaging to assess cardiovascular morphologic and functional disturbances, as well as to guide the subsequent process of clinical decision-making.
Chagas disease remains one of the most prevalent infectious diseases in Latin America, and has become a health problem in non-endemic countries. Dilated cardiomyopathy is the most severe manifestation of Chagas disease, which causes substantial disability and early mortality in the socially most productive population leading to a significant economical burden.

View Full Text PDF Listings View primary source full text article PDFs.

Oct
2017

This study sought to determine the prevalence, correlates, and impact on cardiac mortality of right ventricular (RV) dysfunction in nonischemic cardiomyopathy.
Current heart failure guidelines place little emphasis on RV assessment due to limited available data on determinants of RV function, mechanisms leading to its failure, and relation to outcomes.
We prospectively studied 423 patients with cardiac magnetic resonance (CMR).

View Full Text PDF Listings View primary source full text article PDFs.

Oct
2017

Cardiac troponin T (cTnT) has been reported to be associated with cardiac mortality. In the present study, we evaluated the role of routine assessment of cTnT as a predictor of future cardiac death in patients with left ventricular (LV) dysfunction.
Patients who were eligible for prophylactic implantable cardioverter defibrillator (ICD) were included from cardiac catheterization database.

View Full Text PDF Listings View primary source full text article PDFs.

Oct
2017

Advanced heart failure treated with a left ventricular assist device is associated with a higher risk of right heart failure. Many advanced heart failures patients are treated with an ICD, a relative contraindication to MRI, prior to assist device placement. Given this limitation, left and right ventricular function for patients with an ICD is calculated using radionuclide angiography utilizing planar multigated acquisition (MUGA) and first pass radionuclide angiography (FPRNA), respectively.

View Full Text PDF Listings View primary source full text article PDFs.

Dec
2017

The purpose of this study was to discern imaging findings that separate chronic thromboembolic pulmonary hypertension (CTEPH) from other causes of pulmonary hypertension (PH).
A total of 143 patients with proven PH (group 1, pulmonary arterial hypertension; group 2, PH due to left heart disease; group 3, PH due to lung disease; group 4, CTEPH; and group 5, PH due to unclear or multifactorial mechanisms) underwent MDCT angiography. The CT images were assessed for the presence of chronic pulmonary embolism (PE), disparity in segmental vessel size, mosaic perfusion, parenchymal densities, bronchial dilatation, and collateral arteries.

View Full Text PDF Listings View primary source full text article PDFs.

Sep
2017

Patients with congenital heart diseases (CHDs) are at increased risk of developing complications during anaesthesia. Improvements in medical and surgical management in recent decades have resulted in significantly more children with CHD surviving to adulthood. The aim of this article is to focus on broad classification of CHD and to provide an updated review on the current perioperative anaesthetic management of CHD patients in different settings such as (a) interventional cardiac procedures that have dominated the field, (b) uncorrected patients for non-cardiac surgery and (c) corrected patients for non-cardiac surgery.

View Full Text PDF Listings View primary source full text article PDFs.

Sep
2017

Transthoracic echocardiography is used for assessment of right ventricular (RV) function. Speckle tracking echocardiography (STE) is a new tool to assess myocardial function. The aim of this study was to evaluate RV function using STE in patients with atrial septal defect (ASD) before and the first month after percutaneous closure.

View Full Text PDF Listings View primary source full text article PDFs.

Dec
1969

A 28-year-old woman with a history of critical pulmonic stenosis, status postsurgical valvotomy and subsequent pulmonary valve replacement, presented to the cardiology clinic with 1 year of progressive exertional dyspnoea. She has a heart rate of 75 bpm and blood pressure of 110/55 mm Hg. Cardiac auscultation reveals a 1/6 systolic ejection murmur along the left sternum and an early 3/6 diastolic decrescendo murmur.

View Full Text PDF Listings View primary source full text article PDFs.

Dec
1969

Pulmonary Arterial Hypertension (PAH) is a deadly and disabling disease for which there is no marketed drug that addresses the underlying disease mechanism and targets to cure patients. The lack of understanding of the disease mechanism represents the main challenges in developing curative therapies. We here report, for the first time, that mice lacking natriuretic peptides clearance receptor develop PAH.

View Full Text PDF Listings View primary source full text article PDFs.

Dec
1969

Regarding a patient with dyspnea, the history and physical examination often lead to the correct diagnosis. In some circumstances, when more than one underlying disease is present, the diagnostic process can be more challenging. We describe an unusual case of dyspnea and persistent hypoxemia related to a hepatopulmonary syndrome in a 53-year-old patient with known heart failure and chronic liver disease.

View Full Text PDF Listings View primary source full text article PDFs.

Back to top