Search PubMed⌕ Search

Biomedical subjects

S Arnon

Publications and source records attributed to S Arnon.

25 records · Page 2Linked to original sources
PubMed1992

Fractional processing of sequential bronchoalveolar lavage fluid from intubated babies.

Two groups of intubated newborn babies were studied to determine the clinical effects of interrupted bronchoalveolar lavage (BAL) by suction catheter (S-BAL) and the similarities to adult fibreoptic BAL of fractional processing of sequential lavage fluid (BALF). Both groups were lavaged by two aliquots of 1 ml.kg-1, instilled via a blindly placed suction catheter, wedged on two separate insertions through the right main bronchus. In 14 infants, (sequential lavage group), BALF aliquots were analysed separately. There were no differences in the volumes recovered or total cell counts between the first and second BALF aliquots. Where cell morphology was visible (n = 11), the percentage of macrophages, but not the absolute number, increased in the second BALF aliquot (p less than 0.01). BALF urea and epithelial lining fluid volume estimated by urea dilution were similar between the two aliquots (n = 8). In a separate group (blood gas group), vital signs were recorded in 10 infants undergoing S-BAL. At 1 min after lavage there was a rise in mean arterial blood pressure (39 vs 49.5 mmHg, p less than 0.05) and a fall in transcutaneous oxygenation (10.6 vs 7.5 kPa, p less than 0.05). Recovery was present at 3 min post-S-BAL, but mean blood pressure remained elevated (39 vs 45 mmHg, p less than 0.05) and transcutaneous oxygen continued to be lower when compared to baseline values (10.6 vs 9.2 kPa, p less than 0.05). S-BAL of intubated infants appears to sample both the proximal and distal airways and results in changes in vital signs similar to routine non-selective endotracheal suctioning.

Blood Gas Analysis↗
PubMed1984

The genetic factor in cervical spondylosis.

Lateral cervical spine radiographs of 23 pairs of twins were matched. There is a close similarity in the shape of the vertebrae of twins, particularly if monozygotic. It can also be shown that the degenerative changes in the cervical spines of twins follow a very similar pattern. The suggestion is made that the shape of individual vertebrae is of considerable significance in the development of the changes which are found with ageing, and that this similarity in shape explains the familial pattern of spondylosis.

Aging↗
PubMed1978

Raw hamburger: an interstate common source of human salmonellosis.

An interstate common-source outbreak of salmonellosis was first detected in the United States in September and October, 1975, when a tenfold increase in Salmonella newport isolates was noted through routine salmonella surveillance by the Colorado Department of Health. Eighteen primary cases with a distinctive antibiotic resistance pattern (tetracycline, streptomycin, and sulfonamides) were evaluated in a case-control study, and illness was found to be associated with eating raw hamburger (p less than .001) from any store of one grocery chain (p less than .001). A Dallas, Texas, processing plant that supplied the Colorado markets also supplied other states, and these other states were alerted. Maryland discovered nine S. newport isolates with the same antibiogram and, as in the Colorado outbreak, illness was associated with eating raw or very rare ground beef from the same grocery chain (p less than .03). A third outbreak of S. newport with the same antibiogram occurred on a Florida military base. S. newport with the same antibiogram and a phage lysis pattern identical to those of the human epidemic isolates was cultured from frozen hamburger recovered in Colorado and Florida. The associated hamburger originated at the same Dallas, Texas, processing plant. A source of the epidemic strain was not identified, but the organism probably originated before delivery to the plant.

Adolescent↗
PubMed1976

Gray scale cholecystosonography: an evaluation of accuracy.

The accuracy of gray scale cholecystosonography is evaluated by comparing oral cholecystography and ultrasonography findings on 141 patients. Confirmation of findings by oral cholecystography or surgery was available in 123, and there was agreement by cholecystosonography in 111, for an accuracy of 90%. Of 39 patients with gallstones, 30 were correctly diagnosed by ultrasound. These results represent an improvement in the accuracy of gray scale ultrasonography for evaluation of the gallbladder compared to previous reports and demonstrate the potential usefulness of the procedure for evaluation of the nonvisualized gallbladder.

Cholecystography↗
PubMedDate not supplied

Urinary free cortisol (UFC) values in newborns under stress.

UNLABELLED: Children with adrenocortical insufficiency are commonly instructed to increase three to five times baseline glucocorticoid replacement dose during periods of stress such as surgery or febrile illness. The present study was undertaken to determine whether these recommendations reflect the actual change in urinary free cortisol (UFC) output during stress in neonates and to test the effect of stress on the diurnal variation of cortisol in this age group. DESIGN AND PATIENTS: Twenty-four hour urinary free cortisol (UFC) excretion was determined in 75 neonates during the first 2 days of life. Thirty were healthy and 45 were neonates with respiratory distress. In 60 babies the 24-h UFC was collected in 6-h fractions for the determination of diurnal variation of urinary cortisol. RESULTS: The mean change in UFC was 4.5 times higher in the sick babies than in the controls. A distinct diurnal variation of UFC was noted in both healthy and sick babies. CONCLUSIONS: In contrast with previous publications a distinct diurnal pattern was noted in the majority of neonates.

Birth Weight↗