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 147,016 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Recent developments in transcutaneous ultrasound, encompassing M-mode and two-dimensional echocardiography as well as continuous wave and pulsed Doppler techniques, have provided substantial contributions in facilitating noninvasive cardiac assessment. With Doppler systems diagnostic information is obtained through analysis of changes in the velocity and direction of blood flow, pulsatile character and flow pattern (laminar or turbulent) in the arteries, veins and cardiac chambers. Using Doppler, measurements of peripheral blood pressure correlate well with invasive recordings; coarctation of the aorta can be localized and the pressure gradient determined; stenotic valvular lesions can be diagnosed and pressure gradients estimated; and, based on blood flow patterns, the orifice area of stenotic mitral valves can be calculated. Regurgitant valvular lesions are detected readily and their severity can be graduated semiquantitatively. Septal defects can be identified and the pulmonary to systemic flow ratio estimated. The flow characteristics associated with patent ductus arteriosus are adequately specific to enable its detection even in the presence of other complex anomalies and, similarly, the diagnosis of total anomalous pulmonary venous drainage can be established. Doppler ultrasound is useful in evaluating conduit blood flow after surgery for cyanotic congenital heart disease and enables anatomical and functional assessment after the Mustard or Senning procedure for transposition of the great arteries. Transcutaneous aortovelography has been used to monitor cardiac output, phasic blood flow velocities, changes in stroke volume, aortic systolic ejection times and other parameters considered indicative of myocardial performance. Combined application of Doppler and two-dimensional ultrasound enables calculation of cardiac output and stroke volume. Thus, Doppler ultrasound techniques will play an increasingly-valuable role in noninvasive outpatient screening and post-surgical follow-up.
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PMID:Transcutaneous Doppler ultrasound in paediatric cardiology. 674 34

Outpatient transesophageal echocardiography (TEE) was performed in 10 children and adolescents (aged 3 to 19.5 years, mean 13.5 years; weight 12 to 91 kg, mean 49 kg), including two with Down's syndrome and one with autism, for diagnostic evaluation of issues unresolved by transthoracic echo examination (TTE). Issues for TEE: evaluation for atrial septal defect (two patients); anatomy of left ventricular outflow tract obstruction (one patient); aortic valve anatomy before valvuloplasty for insufficiency (one patient); evaluation for cause of cyanosis after Fontan operation (one patient); determination of source of high-velocity intracardiac turbulence after atrioventricular septal defect repair (one patient); rule out cardiac embolic source in patient with stroke (one patient); evaluate prosthetic valve function and rule out thrombus (one patient); determination of anatomic relationship of mitral valve to a ventricular septal defect before surgery for complex cyanotic heart disease (one patient); and evaluation for aortic dissection in Marfan's syndrome (one patient). Intravenous propofol anesthesia administered without endotracheal intubation by an anesthesiologist allowed successful outpatient TEE in nine patients; midazolam-conscious sedation was used in one. Outpatient TEE resolved diagnostic issues in all patients without complication, thereby avoiding cardiac catheterization in six patients and supplementing catheterization for preoperative planning in four patients. TEE can be performed safely and effectively with propofol anesthesia in the outpatient setting in carefully selected children and adolescents to provide vital diagnostic information. However, given the invasive nature of the procedure and the use of anesthesia, outpatient pediatric TEE should be used judiciously.
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PMID:Outpatient transesophageal echocardiography with intravenous propofol anesthesia in children and adolescents. 848 Dec 50

A patent foramen ovale (PFO) is a fairly common septal defect in the general population. Paradoxical embolization through a PFO is a known cause of stroke. Preprocedural recognition of a PFO in a patient undergoing particulate arterial embolization can help reduce the risk of cerebral infarction.
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PMID:Risks of tumor embolization in the presence of an unrecognized patent foramen ovale: case report. 1206 29

Pituitary apoplexy (PA) is a rare but potentially life-threatening event. Typically, it results from hemorrhage into a pituitary adenoma, although cases affecting the intact gland have been reported. PA may occur spontaneously or in a setting of certain diagnostic and therapeutic procedures. The association of PA and contrast administration in the setting of neuroimaging have been postulated. The authors report a case of PA following coronary angiography. To the best of the authors' knowledge, this scenario has not been previously reported. A 66-year-old woman with a congenital septal defect underwent coronary angiography that was technically uncomplicated. After the procedure, the patient experienced retro-orbital pain and developed ophthalmoplegia. Magnetic resonance imaging (MRI) showed a hemorrhagic sellar mass extending into the cavernous sinus. A 3-month follow-up MRI revealed cystic changes. The patient expired 4 months later because of cardiorespiratory failure. PA in the absence of adenoma was confirmed on autopsy. The authors hypothesize that apoplexy here was related to the administration of Omnipaque in combination with the anticoagulation effect of heparin.
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PMID:Pituitary apoplexy in the setting of coronary angiography. 1288 78

Turner syndrome is a condition usually associated with reduced final height, gonadal dysgenesis, and thus insufficient circulating levels of female sex steroids, and infertility. A number of other signs and symptoms are seen more frequently with the syndrome. With respect to cardiac function, congenital malformations of the heart and the great vessels, hypertension and ischemic heart disease, and increased risk of aortic dissection are all conditions that the pediatrician or the physician caring for females with Turner syndrome should keep in mind. Many girls and adolescents with Turner syndrome receive growth hormone (GH) treatment, which has so far been an effective and well-tolerated therapy. Nevertheless, because of the experience from acromegaly, the physician should monitor blood pressure and perform echocardiography, together with clinical examinations by a cardiologist at regular intervals. During adulthood most women with Turner syndrome are faced with premature menopause and the need for female hormone replacement therapy (HRT). During clinical evaluation of girls and women with Turner syndrome, these conditions and complications should be kept under surveillance. Here the cardiovascular complications of Turner syndrome are reviewed. The risk of congenital heart defects such as bicuspid aortic valves, aortic coarctation, other valve abnormalities, and septal defect is increased. Likewise, the risk of aortic dissection at a young age is increased, as is the risk of hypertension, ischemic heart disease, and stroke. GH therapy does not seem to adversely affect the heart, although longer-term follow-up studies are needed. In short-term studies, HRT lowers blood pressure, while any effect on the risk of ischemic heart disease has not been evaluated. Treatment with GH and HRT are discussed in relation to the heart and great vessels. Presently, the pathophysiology of the congenital cardiovascular malformation in Turner syndrome is unexplained, although different theories exist. Recommendations for clinical practice are given, including life-long surveillance of cardiac function, aortic diameter and blood pressure.
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PMID:Turner syndrome and the heart: cardiovascular complications and treatment strategies. 1472 55

Peer-reviewed data pertaining to anti-thrombotic and interventional therapy for transient ischaemic attack (TIA) or ischaemic stroke patients with non-valvular atrial fibrillation, atrial flutter, interatrial septal abnormalities, or left ventricular thrombus were reviewed. Long-term oral anticoagulant therapy with warfarin is the treatment of choice for secondary stroke prevention following TIA or minor ischaemic stroke in association with persistent or paroxysmal non-valvular atrial fibrillation or atrial flutter. If warfarin is contraindicated, long-term aspirin is a safe, but much less effective alternative treatment option in this subgroup of patients with cerebrovascular disease. Management of young patients with TIA or stroke in association with an interatrial septal defect is controversial. Various treatment options are outlined, but readers are encouraged to include these patients in one of the ongoing randomised clinical trials in this area. It is reasonable to consider empirical anticoagulation in patients with TIA or ischaemic stroke in association with left ventricular thrombus formation following myocardial infarction or in association with idiopathic dilated cardiomyopathy. If warfarin is prescribed, one should aim for a target international normalised ratio of 2.5 (range 2-3) to achieve the best balance between adequate secondary prevention of cardioembolic events and the risk of major haemorrhagic complications.
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PMID:Antithrombotic and interventional treatment options in cardioembolic transient ischaemic attack and ischaemic stroke. 1717 64

Uncorrected congenital interatrial septal defect can be found in nearly a third of all adults and are associated with significant morbidity, including pulmonary hypertension, right-heart failure, atrial arrhythmias, and paradoxical embolic stroke. With advancing technology, percutaneous closure of atrial septal defects has become a viable alternative to open surgical repair. In this review, the authors provide 3 examples in which 3-dimensional interventional transesophageal echocardiogram effectively provided more precise visualization of the dynamic surface and geometry of the atrial septum and related structures than 2-dimensional TEE, permitting accurate sizing and repair of the defects.
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PMID:Repairing interatrial septal defects from the operating room to the cardiac catheterization laboratory: 2D or not 2D? 2154 63

A two-year-old boy with a background history of Down syndrome and partial atrioventricular septal defect presented with acute respiratory distress requiring intubation and mechanical ventilation. He continued to deteriorate, despite ventilation; direct laryngoscopy, bronchoscopy, and computed tomography demonstrated severe long segment tracheal stenosis. He was placed on extracorporeal membrane oxygenation to stabilise his condition. A slide tracheoplasty and complete repair of the partial atrioventricular septal defect was successfully undertaken. His post-operative recovery was complicated by myocardial infarction and stroke but he made a full recovery. This represents the first report of slide tracheoplasty and partial atrioventricular septal defect repair in a child following extracorporeal membrane oxygenation support.
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PMID:Successful slide tracheoplasty and partial atrioventricular septal defect repair following extracorporeal membrane oxygenation support. 2469 90

Infective endocarditis (IE) is defined as infection of endocardial surface of the heart. It may include one or more heart valves, the mural endocardium or a septal defect. Its intracardiac effect includes severe valvular insufficiency which may lead to intractable congestive heart failure and myocardial abscess. Infective endocarditis especially complicated by an abscess is associated with high mortality, despite the medical and surgical therapeutic options available. Surgical intervention is indicated in cases of heart failure or uncontrolled infection and sometimes for the prevention of embolic phenomena. We report a case of 42 yrs/M with RVHD admitted in Dr D.Y.Patil hospital, Kolhapur. He had high grade, continuous fever, vomiting, cough with expectoration since 15 days prior to admission. He had prior embolic stroke 2 months back from which he recovered completely. The diagnosis of Infective endocarditis was confirmed clinically & echocardiographically by Duke's criteria. His ECHO showed severe MR, Moderate MS and large vegetations on AML oscillating through mitral orifice along with subvalval (mitral) abscess. Due to severe haematemesis following Mallory weiss tear surgical intervention was not possible. Patient succumbed as a result of refractory pulmonary oedema.
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PMID:Infective Endocarditis Complicated with Anterior Mitral Leaflet Abscess: A Case Report. 2846 14

Atrial septal defect (ASD) is one of the common congenital anomalies of the heart in humans. Its complications depend on the size of the defect and can manifest at any age. The common symptoms of ASD include dyspnea and fatigue. Most of the ASDs are associated with morbidity and mortality, Earlier the treatment, it is better to the patient. I saw a large ostium secundum defect in the heart of an adult female cadaver during dissection classes for undergraduate medical students. The interatrial septum had large defect at the region where fossa ovalis should have been located. It was about 1.25 inches in diameter and oval in shape. This type of large septal defect might result in cyanosis, stroke or death of the patient at any age.
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PMID:Functional and clinical importance of a large sized ostium secundum defect in a middle aged female cadaver: a case report. 2871 19


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