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Biomedical subjects

D Weitzel

Publications and source records attributed to D Weitzel.

14 recordsLinked to original sources
PubMed1979

Use-effectiveness and client satisfaction in six centers teaching the Billings Ovulation Method.

Use-effectiveness of the Billings Ovulation Method (OM) is reported for 1139 clients from six centers who were followed for at least 24 months. Method failure rates were 1% when calculated by either Pearl formula or life table analysis. Combined method and user failure rates were 20% when calculated with the Pearl formula, and 16% at 12 months and 23% at 24 months by life table analysis. Pregnancy rates were higher for couples using OM alone, than for couples using OM in combination with additional fertility awareness methods or together with barrier methods. The difference was significant when estimated by the Pearl formula but not when analyzed by the life table. The emotional implications underlying the apparent contradiction between a desire to avoid pregnancy and the deliberate coital use of fertile days are reflected in the differences between method and user failure rates, the high client satisfaction levels reported with "user failure," and 56% continuation rate at 24 months. The will require in-depth exploration.

Abortion, Legal↗
PubMed1979

[Diagnosis and differential diagnosis of acute hematogenous osteomyelitis in infants (author's transl)].

Clinical and laboratory data are frequently unspecific in acute hematogenous osteomyelitis of infants. As prognosis is dependent on early treatment, a timely radiologic diagnosis is mandatory. Because of specialties in the vascular supply, the roentgenmorphologic alterations of acute hematogenous osteomyelitis in infants differ from the appearance of the disease in other age groups. The acute osteomyelitis in infants frequently leads to destruction of the epiphysis and purulent joint effusion. A subtle analysis of soft tissue lesions will already rise suspicion for acute hematogenous osteomyelitis before destructive or reactive osseous alterations prove the diagnosis by roentgenology. Nuclear medicine examinations of the bone have contributed significantly to radiologic diagnosis of acute hematogenous osteomyelitis in infants despite of few negative results. Osseous trauma and other diseases should be included in differential diagnosis. Especially in neonatals and premature infants, variations in the typical course and appearance of the disease may occur.

Acute Disease↗
PubMed1978

[Acute anuria due to renal candidiasis in infants (author's transl)].

There are reports here on three cases of renal candidiasis in infancy which after predisposing factors suddenly led to a deterioration in the general state, to a considerable enlargement of the kidneys and to the occurrence of an anuria. The pecularities of the course as well as a conservative treatment success using 5 fluorcytosin are reported on. The pathogenesis of the illness is discussed.

Acute Disease↗
PubMed1977

The anatomy of the heart in the sonogram. A comparison between anatomic and ultrasonic cross-section.

Cardiac sonography has only recently been introduced as a diagnostic procedure. In order to facilitate the interpretation and evaluation of the ultrasonic cardiac cross-section displayed by this two-dimensional technique, we performed anatomic cross-sections corresponding to ultrasonic cross-sections. The ultrasonic cross-sectional images were taken from children with a real-time-motion scanner. The anatomic cross-sections were taken from adult hearts. Two ultrasonic transverse cross-sections are compared with the two corresponding anatomic cross-sections and three ultrasonic longitudinal cross-sections with one corresponding anatomic cross-section. The direct comparison between anatomic and ultrasonic cross-sections best promotes the understanding of the latter: such a comparison shows certain gaps of information in the ultrasonic display, mostly due to the physical prerequisites of the technique. Morphological details, therefore, should be interpreted with great care. In spite of these disadvantages, sonography is the only non-invasive method that provides an exact analysis of the heart's structure. In addition to this, the real-time-motion technique allows observation of the movements of cardiac structures.

Child↗
PubMed1977

Renal sonography in pediatric patients. A comparative study between sonography and urography.

Renal sonograms of 260 children were compared with the corresponding excretory urograms. Since each kidney was evaluated separately 520 sonographic and urographic findings could be compared. The study is based on single investigations only, serial investigations were not included. 326 kidneys could be classified as being normal, primarily on the basis of the urogram. By sonography only 10 out of these 326 were misinterpretated as being pathological, 2 by urography. 194 kidneys could be classified as being pathological either by urography or- if necess -by other methods. In 16 out of these 194 no evidence for a pathological process could be found in the sonogram (7 cases of destructive pyelonephritis, 3 cases of double kidneys, 2 cases of slight obstruction of urine flow, 2 cases of small kidneys, 2 cases of ureteral buds), in 10 cases no evidence was seen in the urogram (6 cases of glomerulonephritis, 2 cases of polycystic kidneys, 1 case of preversial ureteral buds), in 10 cases no evidence was seen in the urogram (6 cases of glomerulonephritis, 2 cases of polycystic kidneys, 1 case of prevesical ureterolith, 1 case of ureteral bud). In 2 cases pathological alterations of the kidney was found by both methods, however, the diagnosis differed. Nonfunctioning kidneys were found in 15 cases. In all of these the sonogram provided important complementary information. Our results show 1) that by a systematic application of sonography the early diagnosis of urinary tract malformations can be improved 2) that renal sonography provides the basis for a stricter application of excretory urography and 3) that by the combination of both methods the diagnosis of renal diseases can be improved.

Adolescent↗
PubMed1975

[Moving-picture corss-sectional echocardiography in normal children].

Using a parallel-scan B-mode ultrasonic system (Vidoson, Siemens) 200 children with clinically normal hearts were examined. Using a cross-section parallel to the left sternal border, rapid and easily reporducible multi-frame echocardiograms were obtained with simultaneous presentation of the aortic, pulmonary and mitral valves. Interpretation of this cross-section, with echos from the three valves, the aortic route, pulmonary artery, right and left ventricles and left atrium, was checked against post-mortem studies and in-vivo contrast studies with ultrasonic contrast medium (indocyanine-green). As the described method is not ECG-triggered, only important morphological changes are demonstrable.

Adolescent↗
PubMed1975

[On the importance of B-scan-ultrasound for the diagnosis of nephrological and urological diseases in childhood (author's transl)].

Kidneys of 118 children of all age groups, and of 2 adults were investigated by means of senography. Normal kidneys could be identified on account of a typical echo-pattern. Deviations from this pattern were interpreted as evidence for pathological changes in the kidneys; they were correlated to the radiological and in some cases to the pathologic-anatomical findings. Typical deviations of the echo-pattern were found in cases of hydronephrosis, duplex kidneys, duplex kidneys in combination with hydronephrosis, polycystic renal diseases and other renal diseases. It was even possible to demonstrate decrease and increase of hydronephrosis by means of sonography. Indications for the application of this method are pointed out. In addition its accuracy and importance in relation to other diagnostics methods are discussed.

Adolescent↗