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Biomedical subjects

H Schreyer

Publications and source records attributed to H Schreyer.

At least 55 records · Page 3Linked to original sources
PubMed1977

[Arterio-venous malformations of the dura (author's transl)].

Two supra tentorial arteriovenous malformations of the dura are described. In one there was a direct localised shunt between the anterior and middle meningeal arteries, and the superior sagittal sinus. The shunt had resulted in varicosities of the cortical veins in both hemispheres. The second malformation was situated in the tentorium and the left occipital lobe and resulted in thrombosis of the left transverse sinus.

Carotid Arteries↗
PubMed1977

[Cerebral AV fistula with cardiac insufficiency in newborns (author's transl)].

A case of arteriovenous aneurysm of the great vein of Galen with congestive heart failure in a newborn infant is presented. Efficiancy of medical management and stop of growth of the head circumference point towards a good prognosis. Patients with this malformation have been divided into four clinical groups presenting with different symptoms in different ages. Anatomy, hemodynamics, clinical picture and diagnosis are considered.

Heart Failure↗
PubMed1977

[Radiological diagnosis of the urinary tract in children (author's transl)].

Urinary infection in children is the most frequent disease of the urinary tract in that age group. The radiologic investigation of the urinary tract is important because infection is caused in almost 50% of cases by obstructive malformations and functional disturbances. Intermittent obstruction of the renal pelvis, functional obstructive megaureter, vesico-ureteric reflux, combined impairments of urinary flow as well as inflammatory renal mass lesions are being discussed.

Age Factors↗
PubMed1976

[Angiographic disappearance of fibromuscular dysplasia of the carotid artery in childhood (author's transl)].

Fibromuscular dysplasia (FMD) of the left carotid artery was diagnosed on the basis of the typical angiographic changes in a seven-year-old girl suffering from acute hemiplegia. A repeat angiography of both carotid and renal arteries 8 months later revealed no pathological changes. The diagnosis of FMD of the carotid arteries is extemely difficult and requires a biopsy or repeat angiography for verification.

Age Factors↗
PubMed1976

[Pharmaco-angiography with Priscolin in progressive scleroderma (author's transl)].

The morphological and haemodynamic findings in the vessels of the forearm and hand in 21 patients with progressive scleroderma are described. In these patients, brachial arteriograms have been carried out before instituting fibrinolytic therapy. Injections were carried out before and after intra-arterial Priscolin and the results were compared. Obliterative changes in the digital arteries are already present during the oedematous stage. Between the oedematous and advanced stages, there are vascular changes of progressive severity. In the sclerotic stage, the changes may be less marked, but more often consist of advanced obliterative vascular disease; this cannot be distinguished from the atrophic stage. The haemodynamics of the digital arteries can be influenced by Priscolin and this provides some information regarding the arterial side of the dermal micro-circulation. Even during the oedematous stage one can observe contrast stasis which is irreversible and not influenced by Priscolin.

Adolescent↗
PubMed1976

Radiology for detecting brain tumor recurrences.

Angiography, 99Tcm-pertechnetate scintigraphy and encephalography are compared in their efficacy in the detection of tumor recurrences in 45 patients following brain tumor resection. No single method is always preferable and the best way of detecting a particular tumor recurrence is based on the location and nature of the primary tumor. Scintigraphy is the method of choice for performing routine postoperative follow-up. In cerebral hemisphere tumors angiography may be replaced by brain scanning which is a lesser procedure for the patient and does not necessitate hospitalisation. Encephalography is the examination favoured for detecting recurrences near the base of the skull. Angiography is the best method for demonstrating recurrences near the surface in the region of craniotomy and is essential before reoperation.

Adult↗
PubMed1976

[Dynamics and metabolism in coronary heart disease before and after revascularization intervention].

In summary, rapid atrial pacing prior to surgery may be able to assess LVF and the degree of coronary insufficiency by measuring lactate production. Functional contraction abnormalities of the left ventricle are described by the anginal depression of the LVF, whereas a preanginal depression should be a sign of organic, fibrotic impairment of myocardial function. In cases of the former, after successful bypass surgery, a normal LVF may be observed. Moreover, myocardial metabolism is normalised. In the latter group, despite clinical improvement, functional abnormalities can persist.

Blood Pressure↗
PubMed1975

[The roentgen diagnosis of chronic inflammatory disease of the middle ear with tomography (author's transl)].

Tomography of the middle ear is a reliable method for the diagnosis of a cholesteatoma. Radiological diagnosis is possible in nearly all cases showing changes in the bony margins of the tympanic cavity and of the retro-tympanic spaces. Bone changes of the medial wall of the tympanic cavity, unless they extend into the labyrinth, can only be shown by tomography. In contrast to cholesteatomas, osteolytic changes are rare and only superficial as a result of ordinary, chronic otitis media. They can be demonstrated by tomography, particularly in the region of the lateral wall of the attic. Diffuse enlargement of the epitympanic recess is rare in chronic otitis media. Destruction of the ossicles may be found with cholesteatomas and, more rarely, with chronic otitis media; evidence of destruction of the ossicles is therefore not adequate for a radiological diagnosis of a cholesteatoma. In addition, the demonstration of bone changes is necessary for this diagnosis. In general, the tomographic investigation of the ossicles is subject to certain limitations. In most cases, destruction of ossicles can be inferred only if their size is reduced, their shape is altered, or if they appear to be absent. Unsharpness of normal-sized or only slightly reduced ossicles is an unreliable sign and has causes other than superficial destruction. An impression of unsharp and "washed out" contours may be due to inflammtory osteoporosis of the ossicles, or to a reduced absorption differential between porotic bone and abnormal contents of the tympanic cavity. This process may even produce the appearance of absence of the ossicles. In the presence of cholesteatomas, the unsharpness is more probably due to superficial destruction than is the case with chronic otitis without a complicating cholesteatoma.

Cholesteatoma↗
PubMed1975

The role of angiography in diagnosis and management of blunt renal trauma.

In a series of 223 patients with blunt renal injury, 40 patients underwent angiography. From this experience the following conclusions have been drawn: If a renal injury is suspected the IVP must be done as soon as possible. In most cases the diagnosis can be confirmed. Mild injuries should be managed conservatively and therefore need no angiography. In life endangering injury there is no time for angiography. The operation should be done preferably by a transperitoneal approach to allow good control of the renal pedicle. Patients with severe injuries should undergo angiography. If there is no function on the IVP, angiography should be done immediately to diagnose possible arterial thrombosis. In most cases angiography can be carried out some days after the trauma. This investigation provides an exact diagnosis and helps in deciding about further treatment. If a major part of the kidney has no blood supply, or there is a rupture with a large perirenal extravasation of urine, we recommend conservative surgery to avoid early and late complications. All operations should be done some days after the trauma. All patients with renal injuries, either operated or conservatively managed, should be carefully followed up. Angiography should be done in all cases of post-traumatic hypertension.

Angiography↗
PubMed1975

[Urographic and cineradiographic follow-up studies in ureteral stenoses following radical pelvic operations (author's transl)].

The results of 19 urographic follow-up studies 6-15 months following vaginal or abdominal radical pelvic operation are reported. Compared to the first follow-up studies 1-7 weeks after the operation which always showed stenosis of the pelvic ureters with various degrees of urinary retention about one half of the cases showed improvement of the stenoses and normalization of the ureteral function later on even when marked urinary retention was found earlier on. Seven cases showed marked improvement. In these seven cases the dynamics of the ureteral function was studied by cineradiography. The results of this investigation are discussed. A deterioration of the urinary retention was observed in only 2 cases. An adverse effect of preoperative or post-operative radiotherapy on the prognosis of ureteral stenosis was not observed.

Cineradiography↗
PubMed1975

[Evaluation of the left ventricular function in patients with coronary disease by means of atrial pacing].

In 18 patients with coronary artery disease and in 12 control subjects, left ventricular function was studied by means of rapid artial pacing. The results were compared with the cardiac dynamics, as determined by left ventricular dysfunction although the angiograms portrayed normal contractility at rest. It has to be assumed, that abnormal myocardial function was only evident during the pacing stress. On the other hand, if the angiogram showed local hypokinesis, the hemodynamic effect of this slightly abnormal contraction could be determined by atrial pacing. Moreover, rapid atrial pacing often produced myocardial ischemia and anginal pain in patients with coronary heart disease. In these cases the transient "anginal" depression of left ventricular function could be separated from the chronic hypoxic "preanginal" dysfunction. This may be of vale in terms of surgical revascularisation.

Adult↗