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Biomedical subjects

A Chantepie

Publications and source records attributed to A Chantepie.

At least 55 records · Page 3Linked to original sources
PubMed1988

[Pre- and postoperative study of arrhythmia in atrial septal defects (ostium secundum and sinus venosus)].

An electrophysiological study was carried out pre- and postoperatively in 25 patients (children and adults) presenting with an atrial septal defect of the ostium secundum type (OSASD). The purposes of the study were to find out whether early electrophysiological abnormalities were present in children, to compare the results obtained in children and in adults and to evaluate the impact of surgery by comparing preoperative and late postoperative electrophysiological data. Patients were divided into two groups. Group I was composed of 11 children (mean age 8.18 +/- 1.03 years) with a mean pulmonary/systemic blood flow ratio of 2.33 +/- 0.24. Group II comprised 14 adults (mean age 36.79 +/- 4.89 years) with a mean pulmonary/systemic blood flow ratio of 3.42 +/- 0.24. Preoperatively, in group I 55 p. 100 of the patients (6/11) had sinus node dysfunction, 18 p. 100 (2/11) had disturbances of atrioventricular conduction, and none had atrial dysrhythmia. Preoperatively, in group II 43 p. 100 of the patients (6/14) had sinus node dysfunction, 36 p. 100 (5/14) had disturbances of atrioventricular conduction, and 36 p. 100 (5/14) had sustained atrial dysrhythmia (flutter or paroxysmal atrial fibrillation). The frequency of sustained atrial dysrhythmia correlated positively with the patient's age and with the presence of sinus node dysfunction. Following surgical closure of the atrial septal defect, the electrophysiological parameters were not significantly modified in both groups. This study confirmed the presence of early electrophysiological abnormalities of sinus node function and atrioventricular conduction in children with OSASD. The most significant finding in adults was the occurrence of atrial dysrhythmias in the oldest patients.(ABSTRACT TRUNCATED AT 250 WORDS)

Adolescent↗
PubMed1988

[Large patent ductus arteriosus and interventricular communication associated with congenital absence of the pulmonary valve].

A case of pulmonary valve agenesis with ventricular septal defect and large patent ductus arteriosus is reported in a neonate. Heart failure occurred at 10 days of life; clinical examination showed continuous murmur. Echocardiography and angiocardiography visualized a major dilatation of the pulmonary artery. At cardiac catheterization there was an important left to right shunt through a large ductus, and pulmonary hypertension. There was also marked pulmonic regurgitation. Because of respiratory distress, ligation of ductus arteriosus was performed at 5 weeks of life. Five years later the patient is still in good condition. Patent ductus arterious is rarely associated with pulmonary valvular agenesis and ventricular septal defect. Our case is not explained by the fetal circulation theory described in this heart malformation.

Abnormalities, Multiple↗
PubMed1988

[Limitations of two-dimensional echocardiography in infants under one month of age].

One hundred and thirty-three children less than one month of age and presenting with congenital heart disease were investigated using two-dimensional echocardiography (TD echo). In these children, 234 cardiovascular abnormalities had been proven by hemodynamic and angiographic investigations (n = 103), post-mortem examinations (n = 15) or operative findings (n = 12). TD echo identified 201 cardiovascular abnormalities with 33 false negatives (sensitivity 86%) and 12 false positives (specificity 94%). Diagnosis after TD echo was correct in 100 children (75%), incomplete in 18 (13.5%), imprecise in 11 (8.3%) and false in 4 (3%). The most frequently unrecognized lesions were: anomalous systemic venous drainage (5/8), persistent ductus arteriosus (5/12), pulmonary stenosis (3/8), ventricular septal defect (5/27), coarctation (2/18). The lesions difficult to characterize concerned mostly the pulmonary valve and the aspect of the aortic arch. On the other hand, TD echo allowed to correctly identify major intracardiac abnormalities, malpositions of the great vessels and to well appreciate the dimensions of the trunk and branches of the pulmonary artery. These results allow to refrain from diagnostic endocavitary investigations in most of the heart defects revealed in the neonatal period and to perform curative or palliative closed heart surgery without preoperative catheterization. However, clinical, angiographic and hemodynamic investigations keep an important place in the preoperative evaluation of defects that may benefit from open heart surgery.

Cardiac Catheterization↗
PubMed1987

[Cardiac and cerebral involvement in aneurysms of the ampulla of Galen. Contribution of echography and cerebral Doppler flowmeter in the neonatal period].

An arteriovenous malformation of the vein of Galen was diagnosed using two-dimensional ultrasound and pulsed Doppler method, in a neonate with congestive heart failure. Contrast echocardiography showed right to left atrial and ductal shunting. Sector scans of the brain revealed an echo free intracranial mass with venous flow at the Doppler. Doppler assessment of the main cerebral arteries was also performed. In neonates presenting with severe congestive heart failure of unknown etiology, two-dimensional ultrasonography provides an accurate and rapid diagnosis of a cerebral arteriovenous malformation with aneurysm of the vein of Galen. Ultrasound method may also contribute to improve the comprehension of the physiopathology underlying the clinical findings.

Cerebral Veins↗
PubMed1987

[Endocarditis of the ventricular septum. Echocardiographic diagnosis].

A 5 year-old child presented with prolonged fever, severe impairment of general condition and a pleuro-pericardium effusion. Echocardiography revealed a "bell-clapper-like tumor" in each ventricle, developed from the ventricular septum. Presence of a staphylococcal sepsis and early disappearance of the echocardiographic signs after antibiotic treatment allowed for diagnosis of bacterial endocarditis with abscess of the ventricular septum. Sinusitis and IgA deficiency were later found to be also present.

Child, Preschool↗
PubMed1986

[Inferior vena caval return to the left atrium with intact interauricular septum. Apropos of 2 cases surgically treated with success].

Two cases of abnormal inferior vena caval return to the left atrium are reported in a 9 year old boy and 13 year old girl. The diagnosis was suspected on the finding of severe cyanosis alone, and the anomalous systemic venous return was correctly identified by angiography of the inferior vena cava. There were three angiographic points of interest in these two cases: the normal position of the inferior vena cava, the absence of a left-to-right interatrial shunt and the presence of a vertical intra-left atrial "membrane" inserted behind the orifice of the inferior vena cava. Surgical correction consisted in resecting the inferior part of the interatrial septum and reconstructing a new septum behind the orifice of the inferior vena cava with a dacron patch in one case and by direct suture in the other. The good surgical result was controlled by angiography in both cases. In the second case, an intrapulmonary shunt due to multiple arteriovenous fistulae demonstrated by contrast echocardiography was responsible for persistent mild cyanosis for a few months after surgery. The long-term clinical results were excellent in both cases. The authors review the literature of this rare malformation due to persistence of part of the right valve of the sinus venosus.

Arteriovenous Malformations↗
PubMed1986

[Polymorphic atrial tachycardia and Wolff-Parkinson-White syndrome in a newborn infant].

The authors report a case of polymorphic supraventricular tachycardia in a premature neonate born at 33 weeks by caesarean section because of foeto-placental insufficiency and hydramnios due to foetal tachycardia diagnosed in utero. This arrhythmia was of interest because of the association of chaotic atrial tachycardia and the Wolff-Parkinson-White syndrome (WPW), which has rarely been described in the neonate. The mechanism of atrial tachycardia in the WPW syndrome is variable. In our case, there was retrograde atrial activation by the accessory pathway with atrial desynchronisation aided by left atrial dilatation. Digoxin, an effective anti arrhythmic agent in neonatal tachycardia, should not be used in cases of atrial tachycardia associated with ventricular preexcitation because of the risk of dangerous ventricular tachycardia.

Electrocardiography↗
PubMed1985

[Use of anti-digoxin antibodies in digitalis poisoning in an infant].

Digitalis poisoning is rare, always iatrogenic and potentially lethal in infants. We report one case of severe poisoning in which treatment with digoxin Fab antibody fragments was successful. Evolution of plasma digitoxin levels showed an initial rapid decrease (T 1/2:1 hour), then a slower decline (T 1/2:5.5 days). No undesirable side-effects were observed.

Antibodies↗
PubMed1982

[Subdural empyema: a rare complication of ENT infections in childhood. Two case-reports (author's transl)].

Two cases of subdural empyema are reported. One occurred after sinusitis, the other after otitis media. In both cases, the diagnosis was suggested by a combination of symptoms indicating infection and neurological disease, which occurred soon after treatment of an ENT infection. Diagnosis was established, either by CAT scan, or by arteriography. Treatment consisted of surgical drainage and optimal antibiotherapy. The clinical course was favorable: complete recovery took place in both cases and clinical status remains unremarkable after two years. The current literature is reviewed and the main clinical features and diagnostic tools (especially CAT scan) are recalled.

Adolescent↗
PubMed1982

[Gastro-intestinal disorders in premature neonates receiving early enteral feeding (author's transl)].

Gastro-intestinal (G-I) disorders were studied in 95 premature neonates. Each child presented with at least one of the features usually associated with mesenteric ischemia. Nearly all the children had been fed early with tyndallized maternal milk. No certain necrotizing enterocolitis (NEC) was observed; however, it was suspected in 4 children (4.2%) and in 7 (7.3%), minor changed occurred. Among the 13 factors examined which might be responsible for inducing NEC, only 2 were correlated with G-I disorders: low birth weight (less than 1,500 gm) and occurrence of secondary apnea or asphyxia incidents during mechanical ventilation. This study led to the following practical conclusion: maintenance of early enteral feeding in prematures theoretically at risk for G-I disorders, taking into account the low incidence of severe G-I impairments and of the advantages of such a feeding method, while carefully supervising intestinal symptoms; preventative and temporary interruption of feeding in low weight prematures, in case of acute asphyxia or hypoxia episodes.

Asphyxia Neonatorum↗
PubMed1982

[Right coronary artery arising from the pulmonary artery. Surgical treatment].

The authors report the case of an anomalous right coronary artery arising from the pulmonary artery. The patient was an active 18 years old boy who had a continuous murmur with diastolic accentuation, the cause of which was determined at angiography. There were electrical and echocardiographic signs of moderate left ventricular dilatation and thallium scintigraphy showed a myocardial perfusion defect. These were the only detectable consequences of this rare malformation. Normal coronary circulation was reestablished surgically, the indication being the risk of sudden death which has been previously reported rather than acute myocardial ischemia.

Adolescent↗