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Biomedical subjects

G Satomi

Publications and source records attributed to G Satomi.

88 records · Page 5Linked to original sources
PubMed1982

[Transposition of the great arteries associated with the straddling tricuspid valve diagnosed preoperatively by two-dimensional echocardiography: report of a case].

A case of transposition of the great arteries associated with the straddling tricuspid valve and the hypoplastic right ventricle was presented, who was diagnosed by two-dimensional echocardiography and finally confirmed by operation. The patient, a 2-year-old girl, had cyanosis, clubbed fingers, effort dyspnea and poor growth. The electrocardiogram revealed both atrial and left ventricular hypertrophy. In the M-mode echocardiogram, the interventricular septal echo was recorded at the level of the midportion of the tricuspid valve and posterior tricuspid leaflet opened behind the interventricular septum during diastole. Two-dimensional echocardiography demonstrated a small right ventricle with the tricuspid valve and its orifice which were straddling over the interventricular septum. Contrast echocardiography disclosed that in early diastole the bolus of contrast echoes passed through the tricuspid orifice into the right and left ventricles simultaneously. Left ventricular angiocardiography in the left anterior oblique projection revealed the negative diastolic silhouette of the tricuspid valve straddling the interventricular septum. Operative findings were as follows; the tricuspid orifice was normal in size, but the crest of the interventricular septum traversed the medial 1/3 of the orifice, the posterior 2/3 of the septal leaflet was supported by an anomalous papillary muscle originated from the left ventricular cavity adjacent to the posterior papillary muscle of the mitral valve and the posterior leaflet of the tricuspid valve was supported with the short chordae from the crest of the septum. The diagnosis of the straddling tricuspid valve was accurately made with the use of two-dimensional echocardiography.

Child, Preschool↗
PubMed1981

Detection of ruptured aneurysm of sinus of Valsalva by contrast two-dimensional echocardiography.

The M-mode and two dimensional echocardiographic features are described of a patient with rupture of a sinus of Valsalva aneurysm into the right atrium. A clear echo-free zone arising from the tip of the aneurysm is visualised in the right atrium in diastole by peripheral injection of echocardiographic contrast material. At surgery a fistula was seen between the non-coronary cusp and the right atrium.

Adult↗
PubMed1981

[Two-dimensional echocardiographic and RI angiographic features of aneurysm of the ascending aorta in patients with annuloaortic ectasia (author's transl)].

The purpose of this study was to compare the diagnostic value of two-dimensional echocardiography with that of other methods in the detection and localization of aneurysm involving the ascending aorta in patients with annuloaortic ectasia. Two-dimensional echocardiography, RI angiography, CT scan and aortography were performed in 19 patients (12 patients with Marfan's syndrome, 4 with aortitis syndrome and 3 with postoperative perivalvular aneurysm). Eight of 12 patients with Marfan's syndrome had dissection in the ascending aorta which was confirmed at surgery or autopsy. The following observations were obtained. 1) Dissection of the ascending aorta was clearly demonstrated on the two-dimensional echocardiogram in 7 patients by recording the intimal tear and flap, and in these cases the short axis two-dimensional echocardiogram of the ascending aorta was more useful in identifying the site and extent of dissection. 2) In patients with postoperative perivalvular aneurysms, RI angiography proved to be a more useful and sensitive technique in differentiating a leakage into the aneurysm from clots in the aneurysm. 3) CT scanning proved to be an insensitive technique to detect dissection of the ascending aneurysm and to differentiate a leakage from clots in the perivalvular aneurysm. From these observations, we concluded that two-dimensional echocardiography and RI angiography proved to be sensitive techniques in detecting dissection of the ascending aneurysm and evaluating a postoperative aneurysm in patients with annuloaortic ectasia.

Aortic Dissection↗
PubMed1981

[Two-dimensional echocardiographic findings of a right ventricular diverticulum: a case report (author's transl)].

A 11-month-old boy with a right ventricular diverticulum was reported. To our knowledge, this is the 18th case in the literature and the first case observed by two-dimensional echocardiography. Using our systematic two-dimensional echocardiographic approach, the three dimensional structure of this anomaly was reconstructed correctly. On the short-axis view of the ventricle, an abnormal septal echo was revealed in the right anterior region of the interventricular septum, forming an another cavity from the right ventricle, and was observed to have proper own motion by real-time two-dimensional echocardiography. From apical four chamber view, the abnormal cavity was detected on the right side of the small right ventricle. By contrast echocardiography, a contrast echo appears in the right ventricle and then in the abnormal cavity. The diagnosis was confirmed by cardiac catheterization, angiography and operation.

Echocardiography↗
PubMed1980

Two-dimensional echocardiographic diagnosis of aorticopulmonary window.

Two-dimensional echocardiography was performed in two cases of distal type aorticopulmonary window. The defect of the aorticopulmonary septum could be visualised in both cases in transverse section of the great arteries using our method. We make it a rule to study three different levels of section: plane 1, where the echo of the semilunar valve of the posterior great artery is well seen; plane 2, where the echo of the semilunar valve of the anterior great artery is clearly observed; and plane 3, where neither semilunar valve is seen. The aorticopulmonary septal defects were recognised at the level of plane 2 to plane 3 in our two cases. Two-dimensional contrast echocardiography was performed in one of the cases. The contrast entered the ascending aorta from the main pulmonary artery through the aorticopulmonary septal defect in early systole. Postoperatively, no defects were detected in the aorticopulmonary septum in either case using the same approach, and no passage of contrast into the ascending aorta from the pulmonary artery was noted in the case where contrast was injected. Accurate diagnosis of this anomaly can be made by visualisation of the defect utilising two-dimensional echocardiography. Typing of this anomaly, proximal, distal, or combined may be possible with our new approach.

Angiocardiography↗
PubMedDate not supplied

Maximal hemodynamic response after the Fontan procedure: Doppler evaluation during the treadmill test.

After undergoing the Fontan procedure for congenital heart disease, 16 young patients performed a maximal treadmill test according to the Bruce protocol. The peak velocity of the blood flow in the ascending aorta, stroke index, and cardiac index were measured by continuous-wave Doppler echocardiography at rest and at each stage of the test. The results were compared with those from 18 normal children. The body surface area was similar in the two groups. The endurance time was 37% shorter in the Fontan group than in the control group. From the beginning of exercise until the sixth minute, the increase in stroke index was lower in the Fontan group (NS). After that point, the stroke index was maintained at a high level in the control group but decreased toward its original level in the Fontan group. The response of cardiac index to exercise in the two groups was comparable until the sixth minute, after which the Fontan group failed to maintain an ascending curve. All the hemodynamic values were significantly higher in the control group at maximal exercise; at this point the cardiac index had increased 79% in the Fontan group and 170% in the control group. The subnormal response of the stroke volume at submaximal exercise and the subsequent decrease at maximal exercise following the Fontan procedure are important hemodynamic findings.

Adolescent↗
PubMedDate not supplied

A case of right coronary artery to left ventricle fistula: two-dimensional echocardiographic study.

A 12-year-old boy with a decrescendo diastolic murmur maximal at the lower right sternal border was suspected of having a coronary arteriovenous fistula. Cardiac catheterization and angiography revealed a right coronary artery to left ventricle fistula with marked dilatation of the right coronary artery. This is the thirteenth case of this anomaly reported in the literature. Characteristic two-dimensional echocardiographic features of this case are presented. A markedly dilated right coronary artery was revealed by two-dimensional echocardiography to take a normal right coronary artery course and empty into the posteromedial portion of the left ventricle. This case indicates the possibility of visualizing a dilated peripheral portion of the right coronary artery using two-dimensional echocardiography.

Child↗
PubMedDate not supplied

Attachment of a balloon to a transesophageal echocardiographic transducer for improvement of contact with the esophageal wall.

We attached a water-inflated balloon to a transesophageal probe to improve contact of the transducer with the esophageal wall and used it in 26 patients with congenital heart disease. Balloons for this study were made for use in hemostatic therapy for esophageal varix. The contact of the transducer with the esophageal wall was successfully improved in all the patients, which resulted in improvement of the signal-to-noise ratio in both two-dimensional and Doppler echocardiography. The appropriate filling volume of water was within 5 ml to avoid compression of the left pulmonary vein and to avoid the artifact of multiple reflection.

Adolescent↗
PubMedDate not supplied

Prenatal diagnosis of total anomalous pulmonary venous connection with asplenia.

The prenatal diagnosis of 2 fetuses with total anomalous pulmonary venous connection was made by color Doppler echocardiography at 31 and 38 weeks of gestation, respectively. Both had asplenic hearts and their diagnoses were confirmed by postnatal echocardiography, magnetic resonance imaging, and angiography. The antenatal diagnosis of total anomalous pulmonary venous connection in right isomerism could provide an optimal postnatal medical and surgical management. Moreover, monitoring of the velocity profile of the pulmonary venous flow is beneficial for decreasing the risk of sudden collapse by pulmonary venous obstruction throughout the perinatal period.

Adult↗