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Biomedical subjects

B Soto

Publications and source records attributed to B Soto.

At least 37 records · Page 2Linked to original sources
PubMed1993

Selective injection of a left coronary artery arising anomalously from the posterior aortic sinus.

Six cases of anomalous origin of the left main coronary artery arising from the posterior or noncoronary aortic sinus have been previously found at autopsy by nonselective aortic sinus injection and only once by selective injection. The seventh known case of this anomaly is demonstrated by selective injection that also reveals distal severe coronary artery disease.

Cardiac Catheterization↗
PubMed1991

[Anhidrotic ectodermal dysplasia].

The case of an hyperthermia-induced sudden death in an infant with anhidrotic dysplasia is reported. This disease, easily diagnosed, should now be better known and its early assessment, with thermal monitoring might improve the initial severe prognosis. A genetic counselling might be possible.

Ectodermal Dysplasia↗
PubMed1990

Double outlet right ventricle with discordant atrioventricular connexion: an angiographic analysis of 19 cases.

Nineteen patients with double outlet right ventricle and discordant atrioventricular connexion were studied in order to analyze their angiographic anatomy. The discordant atrioventricular connexion was parallel in 18 patients and criss-cross in one. A ventricular septal defect, present in all cases, was perimembranous in ten (50%), muscular in seven (37%), and was part of an atrioventricular septal defect in two. The defect was related spatially to the subaortic outflow in six (29%), to the subpulmonary outflow in 11 (52%), was doubly committed in one and non-committed in two. Long axial and four-chamber views of the ventriculograms were most useful for the angiographic delineation of the basic anatomy of this entity. In patients with abnormally located hearts, variations of the axial views were necessary for proper delineation of the anatomy. It is concluded that modified axial views of ventriculograms are useful for diagnosis of double outlet right ventricle and discordant atrioventricular connexions.

Adolescent↗
PubMed1990

Two-dimensional echocardiography and Doppler color flow mapping in the diagnosis and prognosis of ventricular septal rupture.

Doppler color flow mapping in conjunction with two-dimensional echocardiography was used to evaluate ventricular septal rupture after myocardial infarction (seven anterior and eight inferior) in 15 patients and to correlate these findings with cardiac catheterization and surgical or autopsy data. Ventricular septal rupture was diagnosed by turbulent flow traversing the ventricular septum. The direction and velocity of shunt flow was determined by color M-mode and conventional Doppler methods. In all patients, Doppler color flow mapping correctly defined the site of septal rupture, which occurred at areas of discordant septal wall motion or "hinge points" (six posterior inlet, three anterior inlet, and six apical trabecular septum). Each of three patients with moderate tricuspid regurgitation and three of four patients with right-to-left shunting during diastole died, and all had an elevated right ventricular end-diastolic pressure. Right ventricular wall motion index was significantly higher in the patients who died compared with those who survived (mean +/- SEM; 2.8 +/- 0.2 vs. 2.0 +/- 0.2, p = 0.012), but there was no difference in left ventricular wall motion index. The rupture size measured by Doppler color flow imaging (1.7 +/- 0.1 cm) correlated with the size determined during surgery or autopsy (1.8 +/- 0.2 cm, r = 0.68, p = 0.022) and the pulmonic-to-systemic shunt flow ratio by cardiac catheterization (2.4:1 +/- 0.3, r = 0.74, p = 0.004). Color-guided continuous-wave Doppler estimates of right ventricular systolic pressure (47 +/- 2 mm Hg) correlated with cardiac catheterization measurements (48 +/- 3 mm Hg, r = 0.90, p = 0.0002).(ABSTRACT TRUNCATED AT 250 WORDS)

Adult↗
PubMed1989

Ventricular septal defects: a surgical viewpoint.

Seventy-six cardiac autopsy specimens with ventricular septal defects were studied from a surgical viewpoint. The defects were classified as being conoventricular (n = 25), in the right ventricular outlet (n = 21), in the inlet septum (n = 11) or in the trabecular septum (n = 19) with each category having several subcategories. The left ventricular outflow tract relations of the defects are emphasized. The borders of the ventricular septal defects are described in detail, with use of the prefix "juxta" to indicate the immediate adjacency of the defect to a structure such as the tricuspid valve.

Autopsy↗
PubMed1989

Two-dimensional and color Doppler assessment of ventricular septal defect of congenital origin.

Two-dimensional echocardiography and color Doppler examinations were performed in 53 patients with 58 ventricular septal defects (VSD) proven surgically or anatomically. All patients also had angiocardiograms. Two-dimensional echocardiography/color Doppler examination detected all VSDs and correctly categorized the site and extension of VSDs in 50 of 58 (86%). All 40 perimembranous VSDs were diagnosed in the left ventricular outflow tract short-axis plane as an area of discontinuity adjacent to septal tricuspid valve leaflet attachment. Fourteen of 16 VSDs with inlet extension showed initial color flow signals along the septal tricuspid leaflet and along the ventricular septum. Of 23 perimembranous VSDs with outlet extension, 19 had flow signals moving directly toward the right ventricular outflow tract. One perimembranous VSD with trabecular extension showed flow signals directed anterolaterally toward the right ventricular free wall. Eleven of 13 muscular VSDs were similarly categorized correctly by color Doppler as inlet, outlet and trabecular. All 5 doubly committed VSDs were correctly diagnosed as an area of discontinuity adjacent to the pulmonary valve in the short-axis view with flow signals directly moving through VSD into right ventricular outflow and pulmonary artery. Angiography correctly detected all VSDs and correctly classified their site and extension in 45 of 58 (77.5%). It misclassified 8 of 40 perimembranous, 3 of 13 muscular and 2 of 5 doubly committed VSDs. Color Doppler compares favorably with angiocardiography in the detection and localization of VSDs.

Adult↗
PubMed1989

Dual connection of the left anterior descending coronary artery to the left and right coronary arteries.

Origin of the left anterior descending coronary artery from the right coronary artery is a well-described but rare congenital coronary anomaly. In this report, we describe two cases in which the mid left anterior descending coronary artery is connected to the right coronary artery through an intraseptal connecting vessel, while the proximal left anterior descending coronary artery originates normally from the left main coronary artery. This previously unreported pattern suggests partial persistence of the peritruncal ring, which occurs during normal embryologic development of the coronary circulation. Even though it is classically described as an epicardial structure, the vascular pattern in our cases suggests that the peritruncal ring may have an intramural segment in some individuals.

Adult↗
PubMed1988

Cinefluoroscopic evaluation of periprosthetic cardiac valve regurgitation.

The results of cinefluoroscopic evaluation in 509 patients in whom there was no evidence of prosthetic mitral or aortic valve regurgitation were compared with those in 41 patients who had perivalvular aortic or mitral regurgitation. Rotational motion of the base ring of each prosthesis (base-ring tilt) was measured in at least two views. A base-ring tilt of 7 degrees or more for aortic prostheses or 11 degrees or more for mitral prostheses was associated with an increased incidence of significant perivalvular regurgitation. Likewise, in patients who had multiple studies, a change between studies in base-ring tilt of 4 degrees or more for aortic prostheses or 5 degrees or more for mitral prostheses was associated with significant perivalvular regurgitation. These data suggest that the presence of either an abnormal base-ring tilt or an abnormal increase in base-ring tilt is strong, supportive evidence of partial prosthetic valve dehiscence.

Aortic Valve Insufficiency↗