Biomedical subjects

R L Wesenberg

Publications and source records attributed to R L Wesenberg.

At least 37 records · Page 2Linked to original sources

PubMed1978

A variable aperture fluoroscopic unit for reduced patient exposure.

A real time fluoroscopic imaging system which provides capability for reduced patient exposure by as much as a factor of five has been developed. Modifications to the system include the incorporation of a variable aperture iris between the image intensifier output phosphor and television camera and the use of the video signal as the feedback element in the fluoroscopic automatic exposure rate control system. Quantitative and qualitative performance of the system is described.

Fluoroscopy↗

PubMed1977

Neurological complications of infantile osteopetrosis.

Seven cases of infantile osteopetrosis are presented. Five of these were available for detailed clinical examination and 2 for retrospective review, including autopsy slides. Neurological deficits in these patients are reviewed. Involvement of the central nervous system parenchyma was suggested by observations of delayed development, ocular abnormalities, and reflex changes as well as radiographic and autopsy findings. Cerebral atrophy was present in several of our patients as well as some reported in the literature and may account for the ventricular enlargement found in many of these patients. Though hydrocephalus may be present, it is unclear that this is frequent or that it can occur without antecedent intracranial hemorrhage. The large head size is not accounted for by calvarial thickening or by hydrocephalus. Despite our patients' small stature, pituitary function appeared to be normal. Surgical decompression may stabilize cranial nerve function, particularly when the optic nerves are involved.

Atrophy↗

PubMed1977

Selective bronchial intubation for the treatment of severe localized pulmonary interstitial emphysema in newborn infants.

As an alternative to lobectomy and in order to preserve lung tissue which may be potentially functional we have selectively intubated the right main bronchus in four infants 12 to 25 days old with severe, pulmonary interstitial emphysema of the left lung. In each case the localized hyperinflation disappeared within 5 to 48 hours of contralateral selective bronchial intubation. The duration of SBI was 1.5 to 5 days. Three patients benefited from the procedure; there were no serious complications. We propose that SBI should be tried in infants with severe, localized PIE which has caused mediastinal shift, compressive atelectasis, and respiratory acidosis requiring mechanical ventilation despite vigorous pulmonary therapy and usual supportive measures.

Bronchi↗

PubMed1977

Familial osteosclerosis with abnormalities of the nervous system and meninges.

A mother and daughter with osteosclerotic dysplasia are described. The daughter had generalized osteosclerosis, flattening of the angles of the mandibles, high-arched palate, mandibular and facial bone hypoplasia, a large sella turcica, and spacious foramen magnum, platybasia, basilar impression, widened spinal cord with enlarged intervertebral foramina, and scalloping of the posterior surfaces of the vertebral bodies. Radiographic contrast studies and operative intervention revealed multiple thoracic and lumbar meningoceles and an "empty" sella, as well as evidence of maldevelopment of the spinal cord, cerebellum, and cerebral cortex. Many of these skeletal features were noted to a lesser degree in the asymptomatic mother.

Abnormalities, Multiple↗

PubMed1977

Radiation exposure in radiographic examinations of the newborn.

Radiation exposure of the newborn during routine chest and abdominal radiographic examinations has been determined. The exposure has been measured at sites representing the entrance and exit chest, entrance, midline, and exit abdomen, the gonads, and the thyroid. Results of these measurements are reported as a function of kVp and in terms of mR received at the anatomical site per mR output of the generator at 24 in. (61 cm). This reporting procedure facilitates application of the results to exposure estimates under similar conditions at other institutions.

Humans↗

PubMed1977

Thick blood syndrome.

Twenty cases of hyperviscosity were studied prospectively to determine the presence and incidence of radiological findings and whether or not exchange transfusion had an appreciable effect on these findings. Serial chest radiographs revealed increased pulmonary vascularity, hyperaeration, and mild, bilateral alveolar infiltrates (perihilar and/or lower lobe). Ten patients were treated with partial plasma exchange transfusions which resulted in improvement of radiological findings. Hyperviscosity is more common than previously recognized. This entity may have profound significance as a potentially treatable cause of central nervous system damage in the neonate.

Blood Viscosity↗

PubMed1977

Low dose radiography in pediatric radiology.

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Child↗

PubMed1976

Segmental lung resection in the first year of life.

Segmental lung resection was performed in 5 infants with congenital lung disease. The lesions were cystic adenomatoid malformation in 2, congenital cystic disease in 2, and congenital lobar emphysema in 1. A higher than expected incidence of major segmental bronchovascular anomalies was encountered (3 of 5 patients). Other than prolonged air leak in 1 patient, complications were negligible. All patients were well from one to six and one-half years after operation. Segmentectomy is a sensible operation for congenital pulmonary disease and ultimately may have as its greatest virtue the preservation of normal lung tissue.

Bronchi↗

PubMed1976

Enterovirus infections in neonates.

Twenty-seven ill neonates with enterovirus infections were studied to learn if enterovirus infection can be distinguished from neonatal sepsis. Enterovirus infection was associated with the summer-fall season (93%), recent maternal illness (59%), absence of other perinatal problems (81%), and findings of fever (93%), viral meningitis (62%), diarrhea (81%), and rash (41%). Four children developed thrombocytopenia and three necrotizing enterocolitis. Three children died, all with Coxsackie B virus infections that likely were acquired in utero. Although no single feature is pathognomonic, this constellation of epidemiologic and clinical findings, coupled with negative bacterial cultures, should suggest the possibility of neonatal enterovirus infection.

Bacterial Infections↗

PubMed1976

The decline and early fall of neonatal pulmonary hemorrhage.

Seven years' experience (1965-1972) with neonatal pulmonary hemorrhage at the University of Colorado was reviewed. Pulmonary hemorrhage still occurs frequently as a preterminal event in hyaline membrane disease. As an isolated "pure" entity, however, pulmonary hemorrhage has shown a marked decline. This phenomenon is probably related to advances in neonatal intensive care. The radiographic pattern of "pure" pulmonary hemorrhage in the newborn is most commonly a diffuse alveolar infiltrate. Since pure hemorrhage is now an uncommon entity, the radiologist can reasonably suggest this diagnosis on rare occasions only, in the clinical setting of profound hypoxia.

Hemorrhage↗

PubMed1974