Cardiovascular effects of iohexol in the rat and the isolated rabbit heart.

The haemodynamic and cardiac side effects of the new non-ionic contrast medium, iohexol, were investigated anaesthetized rats and isolated perfused rabbit hearts. Iohexol, caused a positive inotropic response in both models, elevated coronary flow and in high doses had an inhibitory influence on the cardiac conducting system. From a comparison with Amipaque and Urografin 76 it was concluded that with respect to cardiac side effects iohexol can be ranked between these media.

Survey of rodent populations associated with an urban landfill.

Trap lines placed in fields along the margin of a Houston, Texas landfill failed to capture a Rattus in 2,358 trap-nights. However, another trap line adjacent to a nearby residential area yielded four Norway rats in 510 trap-nights. These results suggest that rats living in or near homes were not crossing the fields to reach the landfill.

[Therapeutic endoscopy of an Abrikosov-tumor of the esophagus].

The rare and almost benign granular cell tumour has been described at first by Abrikossoff in 1925. The occurrence of this tumour in the esophagus is a rarity.--On occasion of gastroesophagoscopy of a 33-years old man we found an almost pea-sized polypous esophageal granular cell tumour, wich was completely removed with the diathermic electrosurgical snare.

[Carcinoembryonic antigens (CEA) in patients with metastatic breast cancer under endocrine and therapeutic treatment (author's transl)].

Carcinoembryonic antigen (CEA) was determined in 72 patients with metastatic breast cancer under various kinds of treatment. In 53 cases, CEA levels were elevated. They correlated with free interval, metastatic spreading, alkaline phosphatase (AP) and gamma-glutamyltranspeptidase (gamma-GT).

[Photographic documentation of peritoneoscopic findings with the polaroid camera (author's transl)].

Photographic documentation of peritoneoscopic findings is technically well developped, relatively easy to perform, and should be used, as a routine procedure. There are different methods available. The polaroid method is the method of choice, when a paper copy with adequate technical quality is needed at once; this is especially useful for the pathologist, who may evaluate polaroid copies along with bioptic material.

Long-term blood pressure control with pindolol given once daily.

The antihypertensive effect of beta-adrenoceptor blocking drugs has been documented in a number of papers [10--13] and over the last 10 yr beta-receptor blockade has become a more and more frequent primary therapy for hypertension. During this time, a number of different beta-blockers with various degrees of selectivity, potency and intrinsic sympathomimetic effect have come into use. There have also been attempts to reduce the number of daily doses in beta-adrenoceptor blocking therapy while maintaining the antihypertensive effect [5].

[Late complications after dacron-grafts (author's transl)].

In a series of 850 reconstructive operations for chronic occlusive arterial disease we found 17 anastomotic aneurysms and 6 infections over a period of 8 to 10 years after the operation. In case of vascular infection the excision of the graft is urgent, "extraanatomic" reconstruction can prevent loss of limb and live.

[Results of lamellar keratoplasty for recurring pterygium (author's transl)].

Although difficult, recurrent forms of pterygium are seldom seen in central Europe, they cause considerable therapeutic problems because they cannot be cured by simple dissection and conjunctivoplasty. A useful method of treatment in these cases is the marginal, lamellar keratoplasty, which, according to the type of involvement, can take the shape of a sector, ring, horseshoe, or semicircle. If the pterygium is extensive and affects the center of the cornea, a subtotal, lamellar keratoplasty can be performed.

[Methods of approach used by physicials untrained in behaviour therapy to reduce anxiety in children undergoing routine examination (author's transl)].

Samples of pediatricians (N = 50), general practitioners (N = 50) and doctors of a children's hospital (N = 30) were asked to rate the intensity of children's anxiety for 15 items of routine medical performances. In addition the first two groups were asked about the technique used to reduce children's anxiety or to hold it on a low level. The questionnaires were analysed under the following aspects: 1) Are there systematic differences between the three groups concerning the estimation of infantile fear-intensity?--2) Is it possible to express the described behaviour doctors regard as effective for anxiety-reduction in terms of learning theory or behaviour-therapy respectively?--3) Is there a statistical interaction between the estimation of fear-intensity and ways of approaching?--Concerning the estimation of children's fear-intensity the three groups turned out to be highly concordant.

[Clinical contribution to Jaffe's syndrome (author's transl)].

The vitreo-retinal traction syndrome, described by Jaffe in 1967 represents a rare complication of idiopathic posterior vitreal detachment. In this vitreo-retinal disease process, which is ophthalmoscopically so characteristic and in the early phase so surprisingly symptom-free, and which only occurs in this form and to this extent following spontaneous intravitreal fibroplasia, we can discern 3 distinct stages, although transitional phases also occur. Vitreal and retinal changes occur which are developed to a varying extent in the 3 stages.

[Vitamin A absorption test. II. Diseases of the liver, the extrahepatic biliary system and the stomach (author's transl)].

It is reported on the estimation of the vitamin A absorption test in 17 patients with chronic liver diseases, 26 patients with diseases of the extrahepatic biliary system, and in 12 patients with diseases of the stomach. In the latter there are no changes in the vitamin A test. On the contrary patients with diseases of the liver and biliary system show differences in the serum vitamin A levels.

[Vitamin A absorption test. I. Pancreatic insufficiency and sprue (author's transl)].

The vitamin A absorption test and its interaction with the secretin-pancreozymin test, the d-xylose absorption test, fecal fat content and the small intestine biopsy are estimated on their significance in the diagnosis and course of sprue and pancreatic insufficiency. The investigation includes 39 patients with different stages of pancreatic insufficiency and 10 patients with sprue. First it results relatively wide spread normal values in a control collective with sometimes unexplained low values, the significance of the vitamin A absorption test as screening test therefore is limited.

Perturbation analysis of competition and overlap in habitat utilization between Dipodomys ordii and Dipodomys merriami.

The populations of two coexisting species of Dipodomys (Heteromyidae, Rodentia) were manipulated on 10, large, unenclosed, trapping grids. These manipulations revealed that, although many kangaroo rats are established residents in an area, a large number are transient individuals who quickly occupy vacated habitats. On plots from which residents had been removed, transients settled at rates of up to 5% of carrying capacity per day.