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Query: UMLS:C0014118 (endocarditis)
 15,629 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

In adults transesophageal echocardiography (TEE) has become a well-established method for the assessment of cardiac malformations. In children the transthoracic approach (TTE) gives excellent resolution and cardiac malformations can be well defined in most of the cases. Uncertainty may, nevertheless, exist in complex anomalies in spite of TTE and angiography or after surgical interventions. Recently pediatric 5-mHz TEE probes have been developed with acceptable diameters of 6, 9 and 11 mm. The feasibility and the potential risks of TEE were studied in 47 patients, aged from 5 months to 16 years (mean 5 9/12 years), weighing from 5 to 47 kg (mean 19.7 kg). 35 children had congenital malformations: 15 VSD + PS, 5 VSD + PHT, 3 ASD, 5 A-V canal malformations, 1 tricuspid atresia, 2 subvalvar aortic stenosis, 3 endocarditis, 1 normal. Twelve children had rheumatic heart disease. Eight patients had more than 1 TEE. The examination was performed either under general anaesthesia just before of after surgical intervention in 32 or under sedation and with local anaesthesia in the others. There was no complication, but in 3 intubated children under 3 years of age TEE was not possible; obstruction of the endotracheal tube occurred. Adequate imaging was obtained in most of the children with one or the other probe. Additional information was obtained in 28 patients (52%). In 5 of them these informations modified the surgical procedure. We conclude that TEE is feasible in children and has a low risk of complications when practised with care.(ABSTRACT TRUNCATED AT 250 WORDS)
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PMID:[Transesophageal echocardiography--is it indicated for children undergoing heart surgery?]. 158 55

Of multiple etiologies for pure tricuspid regurgitation, the causes may be divided into those associated with anatomically abnormal and anatomically normal tricuspid valves. Conditions associated with anatomically abnormal valves include rheumatic, floppy, Ebstein's anomaly, carcinoid, infective endocarditis, papillary muscle dysfunction, and other rarer causes such as radiation, hypereosinophilic syndrome, and endomyocardial fibrosis. Conditions associated with anatomically normal tricuspid valves include multiple causes of cor pulmonale (chronic obstructive pulmonary disease, primary pulmonary hypertension, and pulmonary hypertension due to mitral stenosis). Of 45 necropsy patients with clinically documented pure tricuspid regurgitation, conditions producing pulmonary hypertension (cor pulmonale, mitral stenosis) were the most frequent etiology (47 percent), followed by floppy (16 percent), rheumatic (11 percent), idiopathic dilated cardiomyopathy (9 percent), Ebstein's anomaly (7 percent), and miscellaneous conditions (10 percent). Of multiple causes of pure mitral regurgitation, tricuspid valve anular circumference and leaflet area are useful measurements in establishing etiology: dilated anuli (greater than 12 cm) are associated with Ebstein's anomaly, floppy valves, and multiple causes of pulmonary hypertension. Increased leaflet areas are associated with floppy valves and Ebstein's anomaly. Anular insertion site separates floppy tricuspid valves from Ebstein's anomaly. Of 21 purely regurgitant operatively-excised tricuspid valves, the etiologies were: rheumatic (43 percent), "functional" due to pulmonary hypertension from mitral stenosis (38 percent), Ebstein's anomaly (9 percent), infective endocarditis (5 percent), and floppy (5 percent). In contrast to etiology of pure mitral regurgitation, rheumatic disease is the leading cause for operative excision of purely regurgitant tricuspid valves. Comparison of systolic pulmonary arterial pressures and tricuspid valve morphology disclosed that pulmonary arterial pressures greater than or equal to 55 mm Hg and tricuspid valve anuli greater than 12 cm were associated with anatomically normal tricuspid valves and that pulmonary arterial pressures less than or equal to 40 mm Hg and tricuspid anuli less than 12 cm were associated with anatomically abnormal tricuspid valves.
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PMID:Etiology of pure tricuspid regurgitation. 353 6

Pregnancy carries substantial maternal and fetal risks in patients with uncorrected or palliatively corrected cyanotic congenital heart disease (CHD). In tricuspid valve Ebstein's anomaly, pregnancy is well tolerated. Maternal mortality in tetralogy of Fallot seems to be less than 10%, but it exceeds 50% in Eisenmenger's syndrome and primary pulmonary hypertension (PPH). Maternal hematocrit greater than 60%, arterial oxygen saturation lower than 80%, right ventricular hypertension, and syncopal episodes are poor prognostic signs. Maternal risk could be reduced by vaginal delivery. Continuous monitoring of arterial and central venous pressure, electrocardiography, and pulse oximetry are recommended for every anesthetic procedure. The use of a pulmonary artery catheter is controversial and probably should be avoided in parturients with cyanotic CHD or PPH. The choice of anesthetic technique and drugs per se is of secondary importance and should be governed by individual preferences. Titration of anesthetic drugs, general anesthesia with controlled ventilation, or, preferably, regional anesthesia with spontaneous breathing should be used cautiously to avoid worsening of the preexisting condition. Prevention of excessive erythrocytosis, volume and blood loss substitution, cardiocirculatory pharmacologic support, prophylaxis of infective endocarditis, and judicious use of anticoagulant drugs should be applied as indicated by the type and presentation of CHD. Poor outcome of pregnancy in PPH requires an early consideration of heart-lung or lung transplantation. Multidisciplinary team effort and prolonged monitoring in the intensive care unit are mandatory to ensure a favorable outcome for cyanotic CHD and PPH parturients.
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PMID:Cyanotic congenital heart disease and pregnancy: natural selection, pulmonary hypertension, and anesthesia. 837 15