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Biomedical subjects

S Dubin

Publications and source records attributed to S Dubin.

32 records · Page 2Linked to original sources
PubMed1978

Effect of anticoagulants and glucose on refractometric estimation of protein in canine and rabbit plasma.

The effect of ethylenediaminetetraacetate (EDTA) compounds on the refractometric estimation of plasma protein concentration was attributed largely to osmotic fluid shifts, as reflected in changes in hematocrit, and to addition of total solids to the plasma. With H4EDTA, these two mechanisms were additive and caused increased plasma protein readings of significant magnitude even at recommended (1--2 mg/ml) anticoagulant concentrations. For the potassium and sodium salts, the two mechanisms were partly compensatory, which ameliorated the effect at 1--2 mg/ml concentration. At higher concentrations, such as might occur if a blood collecting tube were incompletely filled, all of the EDTA compounds caused technically significant over-estimation of plasma protein. When dextrose (d-glucose) was added in-vitro to canine blood, in amounts analogous to clinical hyperglycemia, the effect upon plasma protein estimation was minimal.

Animals↗
PubMed1977

Variation of canine and feline frontal-plane QRS axes with lead choice and augmentation ratio.

The intraindividual variability in mean electric axis referable to choice of ECG leads and augmentation ratio was investigated by means of a digital computer program. Although, in theory, the choice of leads for determining the QRS axis should make no difference, the maximum intraindividual variation in axis angle was about 50 degrees for canine and feline subjects. The angle conputed for the lead combinations I and III and I and aVF will usually fall within 5 to 10 degrees of the mean of all lead combinations, but larger variations are seen at time. The application of an "augmentation ratio" for the augmented unipolar leads was most helpful when it was individually computed. Further methods of lead-vector improvement are discussed.

Animals↗
PubMedDate not supplied

The physiologic changes of aging.

It is estimated that by the year 2030, 21.2% of the United States population will be 65 years of age or older. The elderly are the fastest growing segment of the population and use health care services extensively. Today 30% of all hospitalized individuals are elderly. The professional nurse must therefore be able to assess and assist elderly persons during the course of hospitalization. An important component of assessment is the ability to differentiate the normal physiologic changes of aging from the pathologic changes. To effectively intervene in a therapeutic plan of care the nursing professional must be aware of the limitations brought on by aging.

Aged↗
PubMedDate not supplied

On the early recognition of neuroleptic malignant syndrome.

Neuroleptic Malignant Syndrome, a serious and sometimes fatal complication, has been reported to occur in some patients with the administration of neuroleptic medications. Clinically it is manifested by four groups of symptoms which include muscular hypertonicity, autonomic instability, altered consciousness, and hyperthermia. Laboratory findings such as elevated creatinine phosphokinase and leukocytosis are also seen. While it is true that the incidence of the full blown clinical picture of this syndrome is rare, the authors report that only muscular hypertonicity and autonomic instability have occurred frequently in their setting leading to discontinuation of neuroleptics. Such abortive cases may go undetected. If properly diagnosed, the occurrence of this syndrome is not as rare as the published reports indicate. Second, it is reported that rechallenge with neuroleptics may not induce Neuroleptic Malignant Syndrome again. The authors noted recurrence of fever after rechallenge with a different neuroleptic drug. This article describes the method of early recognition and prevention of morbidity as well as mortality.

Adult↗