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Biomedical subjects

W Wenz

Publications and source records attributed to W Wenz.

At least 19 recordsLinked to original sources
PubMed1979

[House-dust allergy in bronchial asthma].

1. House dust allergy and house dust mite allergy are with 18.4 and 14.1% the most frequent causes of the atopic asthma also under our conditions. 2. In about 60% the house dust allergy is conditioned by a sensitization by constituents of mites (excretions). 3. The responsible antibodies may be established by means of the radio-allergo-sorbent-test. In about 50% results were found corresponding with the intracutaneous test. 4. In the restricted possibilities of the allergen carency the hyposensitization plays an important role. In critical choice of the patients in 50-60% a clinical improvement is to be achieved.

Animals↗
PubMed1979

Indications and use of abdominal angiography in trauma.

A series of 148 angiographic examinations in patients with blunt abdominal trauma have been reviewed. The major indications for arteriography were: (1) manifestations of shock in conjunction with clinical signs of abdominal injury; (2) the necessity for differentiation of multiple abdominal injuries; and (3) clinical signs of delayed rupture. Few false positive or false negative results were noted. The typical angiographic findings are discussed.

Abdominal Injuries↗
PubMed1979

[Hypernephroma in a pelvic kidney. Diagnostic problems during angiography (author's transl)].

A hypernephroma in a pelvic kidney of a 54-year-old patient is described, which could not be demonstrated angiographically. This is explained by marked compression of the kidney because of the limited available space and the pressure of the surrounding organs. There was also histological proof of advanced intimal fibrosis in the artery and extensive obstruction of the vein by tumour, leading to diminished circulation of blood. The extreme rarity of hypernephromas in pelvic kidneys is stressed; this is barely mentioned in the literature.

Adenocarcinoma↗
PubMed1979

[Indications and value of treatment by catheter occlusion (author's transl)].

The value of the catheter occlusion therapy is analyzed in 92 cases retrospectively, and the indication, and complication risk of these procedures are considered. In the following vessel areas occlusion with different methods have been performed with decreasing frequency; kidneys, pelvis, legs, gastrointestinal tract, external carotid and internal carotid artery. Serious complications have been observed in therapeutic investigations at the head, especially in occlusions of the external carotid artery. In this group embolisation therapy should be performed with strict indication only.

Adrenal Gland Neoplasms↗
PubMed1979

[X-ray examination for the detection of complications after abdominal surgery (author's transl)].

The incidence of complications in a consecutive series of 515 abdominal surgical operations was studied. Abdominal complications of varying degree of severity were observed in 62 cases (16%). They were of four types: haemorrhage, ileus, peritonitis and complications on the part of the biliary tract and pancreas. The use of radiological methods for detecting these complications is reviewed. Direct roentgenography is the method of choice in cases of suspected ileus, perforation or foreign body. Administration of contrast media should be reserved almost entirely to cases of stress ulcer and to distinguish between incomplete and complete ileus. If perforation of penetration is suspected only water-soluble contrast media should be used. Detection of a leaking anastomosis or an abscess is by injection of the fistula. The value of angiography for revealing a haemorrhage or embolism and for assessing the response to vasoactive agents is discussed.

Abdomen↗
PubMed1979

[Radiologic findings on crohn's disease of the adult (author's transl)].

Roentgen signs of 42 patients with Crohn's disease are reported. Characteristic features are stenosis [30], fistulas (30), cobble-stone formation (14), asymetry of lesions (12), and thickening of the mucosal wall (10). Main locations are the ileum, predominantly its terminal part (32). The frequency of colon involvement has increased compared with earlier publications. 1 fistula between colon and urinary bladder is described as a rare type of tract formation. In comparison with a study of Hanke et al. (1978) in children there is no significant change in frequency distribution reported.

Adult↗
PubMed1979

[Diagnostic problems in chest injuries (angiography) (author's transl)].

Roentgenography is the simplest and most reliable means to arrive at the diagnosis of chest injury. General roentgenograms are difficult to interpret as they tend to be technically imperfect. Fractures, emphysema, pneumothorax, accumulation of fluid can usually be ascertained directly; but the traumatic origin of changes in the pulmonary parenchyma or of an enlarged heart shadow cannot be reliably deduced from the X-ray appearance. It may provide some differential-diagnostic information but the correct interpretation of the findings depends on further observation. In 6-7% of severe chest trauma with vascular injuries and rupture of the diaphragm angiography is indicated. The evidence to be obtained from chest radiography should not be overestimated: fractures of ribs are sometimes overlocked, even by the expert; parenchymatous lesions may manifest themselves as shadows but their nature remains obscure until they have been related to the clinical and subsequent radiological findings. The same applies to rupture of the diaphragm, bronchi or vessels, if only the immediate posttraumatic roentgenographs are examined. A tent-shaped heart shadow is considered characteristic of the presence of fluid in the pericardium; this is valid only for chronic hydropericardium, but not for the potentially fatal cardiac tamponade; if the pericardium has lost its elasticity a haemorrhage of not more than 150 ml may prove fatal. Nor does the roentgenogram provide information about pulmonary function. Especially in cases of pulmonary shock minor changes in the chest roentgenogram may give a false sense of security when, in fact, blood gas analyses show that a life-endangering situation has developed. The radiologist who is aware of the limititations of the method will derive maximum diagnostic benefit from a chest angiography. No other method is capable of supplying information of such great importance in such a short time.

Angiography↗
PubMed1979

[Radiology in chest trauma (author's transl)].

In chest trauma, a routine chest film, preferably in the lateral as well as the frontal projection, is the basic part of the work-up. Occasionally valuable additional methods are fluoroscopy, tomography, bronchography, contrast studies of the GI Tract and angiography and angiocardiography. In 679 chest trauma patients, traffic accidents and falls were the main reason for the trauma. There were 248 fractures; then - in order of frequency - hemopneumothorax (76), lung contusion (58), subcutaneous emphysema (33) cardiac (16) and vascular trauma (12) and damage to other organs. While 20--30% mistakes are made in diagnosing rib fractures in acute trauma, there is high accuracy in the diagnosis of the other injuries. Many cases are shown to demonstrate the value of diagnostic radiology.

Adolescent↗
PubMed1979

[Direct cholangiography: endoscopic-retrograde or percutaneous transhepatic? (author's transl)].

Indications, success-rate and disadvantages of endoscopic retrograde (n = 928) and percutaneous transhepatic cholangiography (n approximately 360) at the Surgical and Medical University Clinics of Freiburg/German are discussed. Direct cholegraphy is the method of choice in cases of cholestasis of unknown origin. Endoscopic retrograde procedures usually preceed the percutaneous transhepatic approach. PTC either complementary or decisive when ERCP has failed. Therapeutic possibilities of both methods are not yet totally utilized.

Adult↗