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Biomedical subjects

A Formanek

Publications and source records attributed to A Formanek.

51 records · Page 3Linked to original sources
PubMed1977

Three year experience with percutaneous introduction of inferior vena cava filter.

Fifteen patients with recurrent pulmonary embolism were treated with a Mobin-Uddin umbrella filter (UF) introduced percutaneously via femoral vein. There were not technical difficulties, bleeding, or migration of the UF. The incidence of lower extremity edema or phlebitis was not higher than in patients with transjugular application of the UF or in patients with surgical inferior vena cava clipping. Two patients had fatal recurrent pulmonary embolism: in one of them the UF was positioned correctly in the vicinityof the renal veins; in the second the UF was placed too low and a large clot may have formed proximal to the UF. The transfemoral approach of the UF insetion represents a significant simplication of the inferior vena caval interruption, but it can only be used if thrombi are excluded by venography in the iliac vein and inferior vena cava. The UF should be placed as close as possible to the orifices of the renal veins to prevent a thrombus formation proximal to the filter.

Adolescent↗
PubMed1976

Peripheral angiograph enhancement by long leg pneumatic boots.

In patients with arterial occlusive disease it is virtually impossible to predict the speed of blood flow due to the presence of stenoses, occlusions, and collaterals. Repeated exposures and injections can be avoided by the use of pneumatic boots which increase peripheral blood flow by reactive hyperemia, are well tolerated by patients, and decreases the pain associated with injection of contrast material.

Angiography↗
PubMed1976

Comparison of ejection fraction calculated by nine different volume calculation methods.

Single plane right anterior oblinque ventriculography was performed on 25 patients with normal left ventricular contraction and on 25 with left ventricular akinesia or dyskinesia. The value of the left ventricular ejection fraction (EF) was calculated by 9 different methods, including a new one utilizing the mathematical model of a cone. All methods tested were appropriate for inter-group comparisons of EF. For inter-individual comparisons, however, only those methods described by Davila, Chapman, Dodge, Beranek, and our new method, are appropriate.

Angiocardiography↗
PubMed1976

Hemodynamic assessment of obstructive aortoiliac disease.

Angiographic demonstration of obstructive aortoiliac disease is of paramount importance prior to surgery. Obstructive disease in the femoral popliteal system can only be surgically relieved if inflow is adequate. Severely stenotic lesions may be missed by angiography due to the oblique course of the iliac arteries and inability to obtain right angle views. Translumbar downstream catheterization of the abdominal aorta and puncture of both femoral arteries allows simultaneous pressure recordings. The injection of 30 mg of papaverine into the femoral artery assures maximal vasodilatation mimicking conditions under exercise. A minimal gradient at rest may become obvious following the injection of papaverine, indicating hemodynamically significant disease and warranting surgical correction. The technique has proved to be simple and valuable, and there have been no complications.

Aorta, Abdominal↗
PubMed1975

Single ventricle: a new angiographic classification.

The authors recommend that the "single ventricle" be differentiated into two types. There are single ventricles of the left ventricular type, and others of the primitive type; in other words, the chamber is typically left ventricular or cannot be differentiated into left or right. In the latter case we are dealing with a primitive chamber. In addition there may be variations of the large vessels. Of 40 patients with a single ventricle of the left ventricular type, ten showed normal topography of the major vessels, 13 had a d-transposition and 17 an 1-transposition. In the d-transposition, the outflow track of the ventricle was anterior and to the right and the aorta arises in front of the pulmonary artery; in the 1-transposition and sub-aortic portion is anterior and to the left, the aorta is ventral and to the left of the pulmonary artery. In the discussion it is pointed out that the "single ventricle" must be included in the differential diagnosis of cyanotic, congenital heart disease. Angiographic confirmation of the "single ventricle" depends on the demonstration of an absent ventricular septum and of two separate atrio-ventricular valves.

Angiocardiography↗
PubMed1975

Regional myocardial blood flow measurements before and after coronary bypass surgery. A preliminary report.

Myocardial blood flow in 16 patients before and after coronary bypass surgery in conjunction with coronary angiography, left ventricular function measurement, and graded exercise test. Radioactive 133-Xe was injected into the coronary artery or bypass graft and the washout was recorded by an Anger camera. Myocardial blood flow increased in 11 out of 14 patients and decreased in three patients. The average flow was 55 (plus or minus 6) preoperatively and 96 (plus or minus 10) ml 100 g/min postoperatively. Increase of blood flow occurred in both the bypassed left anterior descending coronary artery (LAD) region and the nonbypassed left circumflex coronary artery (LCIR) region. The postoperative flow increase and the absolute postoperative flow values are higher with saphenous vein than with mammary artery grafts. Statistically significant correlation is not found between myocardial blood flow changes and exerice tolerance. The volume measurements (end diastolic volume, stroke volume, ejection fraction) remained unchanged.

Adult↗
PubMedDate not supplied

Radiologic diagnosis of different types of pulmonary stenoses.

Right ventricular outflow obstructive lesions are among the most prevalent congenital cardiac anomalies with a frequency ranging from 6--10% when considered as isolated anomalies. As part of a more complicated developmental complex, their frequency is undoubtedly higher. The diagnosis can be suspected by the traditional clinical and hemodynamic findings, but a firm diagnosis can only be made by angiography. An exact diagnosis is most important since most of these lesions can be surgically corrected.

Cardiomegaly↗
PubMedDate not supplied

[Proteus syndrome].

Two new cases of Proteus syndrome are reported. This congenital syndrome, first described in 1983, comprises gigantism of extremities, body hemihypertrophy, pigmented nevi and multiple tumors (subcutaneous, lipomas, hamartomas). This syndrome belongs to the same group as Recklinghausen disease, Maffucci or Klippel-Trenaunay syndromes. The prognosis is not well known but mostly depends on functional and psychologic consequences of important deformations.

Abnormalities, Multiple↗