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Biomedical subjects

N Goebel

Publications and source records attributed to N Goebel.

At least 73 records · Page 4Linked to original sources
PubMed1983

Assessment of stenoses in coronary angioplasty. Inter- and intraobserver variability.

Three observers twice assessed coronary artery lesions of 10 patients in three oblique views using the films obtained before, immediately after, and six months after percutaneous transluminal coronary angioplasty. In order to improve accuracy of the interpretation, the stenoses were traced from the cine projector and the diameters measured with a calibrated magnifying glass. Interobserver and intraobserver variability of the commonly used method assessing only the projection showing the most severe stenosis was compared to that of a method assessing the mean of three projections. The interobserver coefficients of variation were 7.0% for using the one projection showing the most severe stenosis and 6.4% for using the mean of three projections (not significant). The intraobserver coefficient of variation was significantly reduced from 16.0 to 10.5% (P less than 0.0001) by using the mean of three projections. The assessment of three projections instead of one justifies the additional time needed by significantly increasing assessment reliability which is of great importance in evaluating and comparing anatomical results of percutaneous transluminal coronary angioplasty.

Angioplasty, Balloon↗
PubMed1983

[Unusual radiological findings after surgically treated constrictive pericarditis].

The radiological findings in three patients who had had surgery for constrictive pericarditis are reported: 1. acute myocardial dilatation after pericardectomy for constrictive pericarditis, with good restitution of ventricular function; 2. abnormal ventricular appearances after pericardial resection during childhood; 3. diastolic prolapse of the cardiac apex after fenestration of the pericardium.

Adult↗
PubMed1983

[Angio-follicular lymph node hyperplasia (Castleman's lymphoma)].

Two patients with angio-follicular lymph node hyperplasia are described, and the literature is reviewed. In one symptom-free man, the chest x-ray showed a tumour of the upper mediastinum the size of a fist (which is known to have been present for 20 years), in another man there was a 4 cm. node in the right hilum, which was shown by computer tomography not to be due to vessels. In each case the tumour was removed. Histologically they proved to be a hyaline-vascular type of angio-follicular lymph node hyperplasia. This is probably an inflammatory-reactive process.

Adolescent↗
PubMed1983

[Vascular dilatations in the coronary angiogram].

Amongst 166 patients with aneurysms, ectasia or megaloarteries shown on coronary angiograms, 86.1% had dilated vessels as part of generalised coronary sclerosis (usually in patients with three-vessel disease). In 9%, dilatation was of iatrogenic origin and in 4.8% it was idiopathic. One patient had Marfan's syndrome. Amongst 9 000 patients, there were eight with megalo-arteries without stenosis; six of these had atypical angina and three suffered an infarct. Patients with definite dilatation of the coronary artery and stagnation of contrast flow required treatment.

Adult↗
PubMed1983

[Changes in the unmodified vessels after aortocoronary bypass surgery].

In a prospective study (238 men, mean age 53 years) the changes of the native vessels were studied 3 months after a-c-bypass operation and 5 months after preop. angiography. Progression was defined as increase of stenoses of at least 20% or new total occlusion. Progression was significantly more frequent in vessels with than without bypass and was located proximally to the anastomoses in most cases, less frequently at the anastomoses and very rarely distally to the anastomoses. Proximal progression was significantly more frequent with patent than with occluded bypasses. Stenoses at the anastomoses were significantly more frequent with occluded than with patent bypasses. Stenoses of higher degrees had a stronger tendency for progression than slighter stenoses. Regression was rare and nearly always caused by surgery.

Angina Pectoris↗
PubMed1983

[The lobus venae anonymae].

A paramediastinal shadow in the right upper lobe resembled a cavitary lesion in conventional tomography. Computed tomography displayed an anomalous course of the right brachiocephalic vein in the upper lobe.

Aged↗
PubMed1982

[Spurious aneurysm after myocardial infarct].

False aneurysms of the left ventricle after myocardial infarction arae the result of perforation, which usually require early surgical treatment. The clinical features are not characteristic. The chest x-ray may provide important evidence for the diagnosis. Non-invasive diagnosis is possible by means of echocardiography and computer tomography; it is confirmed by angiocardiography. The authors experience with nine cases is described.

Adult↗