Search PubMed⌕ Search

Biomedical subjects

A Rangel Abundis

Publications and source records attributed to A Rangel Abundis.

13 recordsLinked to original sources
PubMedDate not supplied

[Transcatheter pulmonary valvuloplasty].

We describe the first case of balloon pulmonary valvuloplasty performed in this country. This 12 year old girl had a transvalvular gradient of 94 mmHg and after the procedure it improved to 20 mmHg. Four months later, cardiac catheterization did not show any significative change in pulmonary valvular gradient (26 mmHg). We describe the technique, hemodynamic findings, complications, and advantages of this procedure. We also review the literature. We consider that balloon valvuloplasty should be the first choice procedure in the treatment of patients with congenital pulmonary valve stenosis.

Blood Pressure↗
PubMedDate not supplied

[Blade auricular septostomy].

We describe the first case of BAS in our country in a three months old child with transposition of the great arteries, restrictive atrial septal defect (RASD) and intact interventricular septum. When he was 15 days old, we performed a balloon atrial septostomy. He had temporal improvement and six weeks later his cyanosis increased, and a new catheterization showed systemic arterial oxygen saturation of 30%, RASD and an interatrial pressure gradient of 2.1 mmHg (left atrium LA: 3.9 and right atrium RA: 1.8). We decided to perform a new septostomy with Park's blade atrial septostomy catheter. After the procedure the interatrial pressure gradient decreased to 0.2 mmHg (RA: 4.3 and LA: 4.5), the angiography shunt and atrial pressures increased. Five months later the child is alive and the systemic arterial oxygen saturation is 51.3%. The technique, advantages and complications are described.

Blood Pressure↗
PubMedDate not supplied

[Coronary arteriovenous fistula. Considerations on differential diagnosis].

Review is made of the literature of coronary arteriovenous fistula, since its first description up to 1975; we mention the most important points treated by each author. Two cases are studied clinically, by entheterization and coronariography. We take into consideration the differential diagnosis with patent ductus arteriosus, ventricular septal defect with aortic insufficiency, and rupture of congenital aneurysm sinus of valsalva to right cavities. The result of these studies is that, if an atypical continous murmur for an arterial duct is present, we may suspect a coronary fistula as a first possibility, since an aneurysm of valsalva's sinus is a rare entity.

Arteriovenous Fistula↗
PubMedDate not supplied

[Conduction disorders at multiple levels during the acute phase of a myocardial infarct: an electrophysiological study].

Forty patients with a diagnosis of acute myocardial infarction (anterior 24, and inferior 16) were studied. Of these patients, 37.5% manifested second and third degree atrioventricular (AV) block as a complication; another 30% showed complete right bundle branch and left anterior hemiblock. Right bundle branch and left posterior hemiblock were evidenced in 12.5% of the subjects. There was 20% with complete left bundle branch block. Electrophysiologic studies were performed in all patients to assess the site of block. A direct relation was found between the surface ECG and the His bundle electrogram studies in patients with an inferior myocardial infarction and AV block, both procedures located the conduction disturbances at the AV node (suprahisian block), in contrast to patients with anteroseptal myocardial infarction whose surface ECG only showed bundle branch block or fascicular block. The His bundle electrogram registered multiple levels of AV block, 70% with troncular and infrahisian block that gave way to sudden AV block. The mechanism responsible for this block was considered to be a functional longitudinal dissociation of conduction system due to an acute ischemic injury of the His bundle, more than a sudden and simultaneous failure of all the bundle branch of His. We conclude that electrophysiologic studies are a useful procedure for identification of a group of patients with multiple AV conduction disturbances that have a less favorable prognosis than those with only suprahisian level of block.

Adult↗
PubMedDate not supplied

[The writer physician].

Explore the source record for details and available documents.

Information Services↗
PubMedDate not supplied

[Percutaneous mitral commissurotomy using Inoue's balloon during pregnancy].

The authors present three cases of pregnant women with symptomatic severe mitral stenosis with a mean age of 28.6 +/- 2.3 years, and during 27.6 +/- 1.52 weeks of pregnancy. Two patients were in class III and one in class IV of the New York Heart Association (NYHA). All patients had a mitral valvular area equal or less than 1 cm2, with a Wilkins score of 7 to 9 and mitral insufficiency grade I in two cases; two, had severe pulmonary arterial hypertension (mean > 50 mm Hg). After Percutaneous Mitral Valvuloplasty (PMV) the mitral valve measured by 2D echocardiography increased form 0.83 +/- 0.2 cm2 to 1.8 +/- 0.15 cm2; the mean transmitral gradient diminished from 13 +/- 3.4 mm Hg to 3.6 +/- 1.15 mm Hg; the degree of mitral insufficiency was no modified in neither case. Hemodynamic results revealed increasing of the mitral valve from 0.83 +/- 0.18 cm2 to 2.23 +/- 0.3 cm2; the mean mitral gradient decreased from 21.6 +/- 9 to 4.3 +/- 0.5 mm Hg; the mean left atrial pressure from 30 +/- 12 to 12.3 +/- 4 mm Hg; the mean pressure of the pulmonary artery diminished suddenly from 44.3 +/- 16 to 25.6 +/- 11 mm Hg. The average fluoroscopic time was 15.3 +/- 3 minutes. There were no complications. The patients were discharged 48 hours after the procedure and continued their pregnancies in class I NYHA, which resolved in a non complicated vaginal delivery with normal products. We conclude that PMV is a safe and useful therapy in pregnant patient with severe mitral stenosis refractory to medical treatment.

Adult↗