[Report on experiences with a one-year action at the Gondar College of Medical Sciences in Ethiopia. 3. Influence of diabetes mellitus on the teeth supporting apparatus].

Systemic diseases--like diabetes mellitus--are able to injure the local and common resistance of an organism. Therefore we must expect a more intensive and severer progress of gingivitis and periodontitis in diabetic patients in comparison with a non-diabetic control-group. On the Gondar College of Medical Sciences in Northwest-Ethiopia are investigated 77 Insulin-obliged diabetics and 312 persons for control by means of the plaque-Index, the Oral-Hygiene-Index simplified.

[ECG mapping studies for optimal electrode placement for the detection of stress-induced changes in R-amplitude in the diagnosis of chronic ischemic heart disease].

The evidence on the clinical relevance of the behaviour of the R-amplitude under load for the non-invasive diagnosis of the chronic ischaemic heart disease is contradictory in literature. One of the causes for the variable estimation is possibly to be found in the different localization of the lead electrodes. With the help of the ECG mapping using 30 electrodes at the anterior thoracic wall 15 males were examined with typical syndrome of angina pectoris and a clearly pathological reaction of the ST-distance in a preceding usual bicycle ergometry.

[The value of the rapid pentagastrin test].

The evidence of the pentagastrin rapid test inaugurated by Johnston and Jepson in contrast to the usual analysis of the gastric secretion (DAB 7 GDR) was controlled on altogether 256 patients. Of them 121 patients were examined according to the well-known method and 135 patients with the shortened pentagastrin test. The same efficiency could be verified for the pentagastrin rapid test.

[Use of RR-interval distribution within the scope of ambulatory functional diagnosis in the angina pectoris syndrome].

The distribution of the interval of the heart beat of 93 test persons of the 4 groups normal group, group with labile essential hypertension, group with apparantly vegetatively conditioned heart pain and group with angina pectoris syndrome in coronary sclerosis may be described with the help of log normal distributions. In the vegetative group a dependence of the distribution parameters was proved. The results of a linear discriminance analysis for the vegetative group and the group with coronary sclerosis as well as the unequivocal age dependence of sigma at first do not allow a differentiation significant for practice according to the results got up to now.