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Biomedical subjects

E Drescher

Publications and source records attributed to E Drescher.

At least 19 recordsLinked to original sources
PubMed1989

[Angular measurements of the hindfoot in CT].

The absence of soft tissue superimposition on bone makes CT greatly superior to conventional radiographs, even using special views, for demonstrating the hind foot. Views derived from both methods are compared. Semicoronary and transverse planes have been defined in relation to specific points in the tarsus. In the semicoronary plane, the calcaneus-valgus angle varies from +10 degrees (valgus) to -10 degrees (varus) and the sustentaculum angle varies from 18 to 28 degrees. In the transverse plane, the plantar talocalcaneal angle is 60 degrees to 70 degrees and the calcaneal-cuboidal angle is 20 degrees to 35 degrees. These values are based on measurements of 62 normal feet. They are valuable for judging quantitatively posttraumatic deformities, displacement of fragments and operative results.

Adolescent↗
PubMed1989

[Pathologic changes in the hindfoot angle following fracture of the calcaneus].

Forty fractured calcanei (13 without and 27 with involvement of the joint) were examined by CT and the angle of the hind foot measured. Following a typical compression fracture there is a negative calcaneus-valgus angle, i.e. varus deformity of the tuberosity fragment. The sustentaculum angle is increased. There are changes in the talo-calcaneal and calcaneo-cuboidal angles. The length ratio of calcaneus to talus is reduced. Reproducible measurements make it possible to compare the results of operative correction and of changes in shape following conservative treatment, e.g. during weight-bearing.

Adult↗
PubMed1989

[Indications for computerized tomography of the wrist joint and carpal bones].

Twenty-nine patients with thirty-one fractures of the distal radius and persistent pain or disability had computed tomography of the radio-carpal and distal radioulnar joint. We found incongruity of the distal radio-ulnar joint in six patients. Ten patients had a rotational malalignment in supination. Seven patients suffered from rotational malalignment in pronation. The ability to quantify rotational malalignment and to have images of the degenerative arthritis following these disorders without superimposition aids in selecting surgical treatment.

Adolescent↗
PubMed1989

[CT diagnosis of malalignment following distal radius fracture].

Examination of 29 cases of fracture of the distal radius with restricted motion or persistent pain in 22 patients showed that most had been caused by incongruity of the distal radioulnar joint or by rotational malalignment in supination or pronation. Imaging of the distal radioulnar joint without superimposition enables us to detect whether disorders of the joint facets are impeding movement. Exact knowledge of the malalignment aids in the planning of osteoplastic surgery.

Adult↗
PubMed1988

[Radiologic diagnosis following compound fracture of the distal radius with special reference to computed tomography].

After complicated distal radius fractures with persistent symptoms, a variety of radiological methods may be indicated, including plain films, magnification views, examination under stress and arthrography. CT accurately differentiates abnormalities of the distal radio-ulnar joint and aids in deciding on surgical treatment. Demonstration of degenerative changes and of subluxations is much more satisfactory in the third plane, since there is no superimposition.

Elbow Joint↗
PubMed1985

[Comparative studies of contractile heart function using impedance, echo-, radio- and apex cardiography].

89 patients (31 healthy subjects, 31 hypertensives, and 27 patients with coronary heart disease) were examined simultaneously by means of impedance (ICG)-, ultrasonic (UCG)-, radio (RCG)-, and calib. and diff. apex cardiography (cACG). There were found significant correlations between the ICG-, UCG-, and RCG-parameters, all describing the heart function in the auxotonic ejection phase. Whereas there were no significant correlations between the methods mentioned and the cACG. Of all investigated parameters in hypertensives only the quotient A/S of cACG is significantly increased compared with persons with healthy heart and circulation. In patients with coronary heart disease all the parameters of the auxotonic ejection phase are significantly decreased, the isometric contraction time and the quotient A/S are increased.

Adult↗
PubMed1981

[The measurement of airway resistance during exercise by body plethysmography before and after application of asthma-protective drugs (author's transl)].

The behaviour of airway resistance under and after physical exercise up to 75 watt was investigated in 70 persons. In this test the airway resistance of subjects with healthy lungs and patient suffering from bronchial hyperreactivity does not show any significant changes. Patients with manifest obstructive ventilation disorders may be divided into two groups: in the major group (preponderant patients with a chronic bronchitis) the airway resistance decreases under exercise and reaches not the starting level up to the 8th minute after finishing exercise. In the minor group with the clinical picture of asthma the airway resistance increases during and after exercise and reaches it maximum in the 4th minute of recreation. In the same group the oxygen partial pressure decreases under exercise but on the average remains within the age-dependent reference-range. With the drugs disodium cromoglycate ("Intal"), Ketotifen ("Zaditen") and ipratropium bromide ("Atrovent") it's possibly to reduce the exercise induced increase of airway resistance; in comparison ipratropium bromide has the best effect.

Adult↗
PubMed1980

[The heart in hypertension].

After indications to the great epidemiologic importance of hypertensive heart disease and its relationship with the ischaemic heart disease several results are reported collected during the past 10 years by examinations of more than 500 patients for early diagnosis of cardiac insufficiency in hypertension. The methods of microcatheterization of the pulmonary artery and radiography have been used (even under ergometrical exercise) as well as the calibrated apex cardiography and the echocardiography. For the practising physician a classification of hypertensive heart disease with 4 phases or forms is proposed. The paper ends with a demonstration of the close relationship between prevention and treatment of hypertension as well as between hypertensive and ischaemic heart disease at the same time in a sense of the integrative role of heart insufficiency.

Cardiomegaly↗
PubMed1980

Echocardiographic and haemodynamic investigations of heart function in hypertension.

In 30 male hypertensive patients (mean age 46 +/- 7 years), WHO stage I-III, the end-diastolic pulmonary artery pressure (PAEDP) as indicator of the left ventricular filling pressure was compared with echocardiographic parametres using the time-motion technique. Group A (without increased PAEDP) revealed significantly different mean values of the mean velocity of circumferential fibre shortening (mVCF) and the mitral closure rate in comparison to Group B (with increased PAEDP), indicating a reduced left ventricular performance in Group B even at rest. This is in accordance with a (insignificantly) lower ejection fraction and with higher mitral septal separation (E IVS) values and with more exercise ECG results indicating ischaemia in Group B.

Blood Pressure↗
PubMed1980

Echocardiography in hypertension. Dimensions and mass of the left ventricle. Comparison with controls and sportsmen.

The investigation was carried out to determine dimensions and mass of the left ventricle (LV) in relation to the stages of essential arterial hypertension (HT). 93 male non-congestive hypertensives (WHO stages I to III) were examined by means of echocardiography (UCG) (2.25 MHz single element transducer), using the T - M - technique (Organon - Technika, The Netherlands). The results were compared with those of 75 controls and 21 endurance sportsmen. Differences in the wall thickness of the LV in the hypertensives compared with that in normotensive subjects can be shown quite easily. For this purpose the UCG is more sensitive than an ECG. There is, however, a poor correlation between the WHO stages and the actual wall thickness. On the other hand, a close correlation was found to exist between wall thickness and average systolic, diastolic and mean blood pressure (r = 0.72, 0.68, 0.70). The LV dimensions do not differ substantially from those obtained for normotensives. The ventricular mass/volume ratio shows a characteristic shift towards the mass in HT. This quotient helps to differentiate between various forms of hypertrophy and/or dilatation as demonstrated for instance in sportsmen.

Adult↗
PubMed1980

Echocardiography [UCG] in hypertension. Myocardial performance comparison with controls and sportsmen.

Thanks to a number of parameters available, mean velocity of fibre shortening (mVCF), fibre shortening (FS%), ejection fraction (AF), stroke volume (SV), enddiastolic volume (EDV), echocardiography (UCG) is a non-invasive and well reproducible technique for examining the functioning of the heart. The UCG results obtained for 93 pre-treated male non-congestive hypertensives were compared with those obtained for 75 normotensives and 21 endurance sportsmen. In spite of the increasing degree of HT (WHO standards), the cases studied did not show a statistically significant decrease in the myocardial function. This study reveals that in general the heart of a hypertensive does not yet show at rest an overall functional loss. Compared with the left ventricular mass, however, a trend towards reduced performance can be seen, particularly when compared with sportsmen having a hypertrophy of a similar degree.

Adult↗