PubMed Health⌕ Search

Biomedical subjects

L Kahn

Publications and source records attributed to L Kahn.

At least 73 records · Page 4Linked to original sources
PubMed1975

Lack of effect of an experimental prepaid group practice on utilization of surgical care.

The utilization of surgical care in an experimental period group practice for a 3 year period is reported. In contrast to what was expected, prepaid enrollees used the same or more surgical care than did control enrollees. The same proportion of emergency, urgent, and nonurgent admissions, occurred in both groups. Likewise there was no difference in the proportion of various procedures often thought to be overutilized in the traditional medical care system. High quality of surgical care in the area where the study was conducted was considered the most likely explanation for failure to show differences in the prepaid growth practice. Few, if any, unnecessary operations were performed in either group studied. Thus, under the conditions of this study, no significant measurable effect on surgical utilization by a change in the method of medical care organization and payment could be demonstrated.

Adult↗
PubMed1975

The modification of pediatrician activity following the addition of the pediatric nurse practitioner to the ambulatory care setting: a time-and motion study.

Time and motion studies were performed before and after PNPs began working in the offices of three pediatricians and the emergency room of a municipal general hospital. Pediatricians' activities changed in different ways, but all benefited by the generation of available time. The three pediatricians in office settings gained the equivalents of 21.6%, 21.7%, and 36% of the working day by the addition of the PNP. Physicians working in the emergency room gained 14.7% during that time of day the PNP was present. PNP visits with patients were longer than those of the pediatricians, the average length of time being related directly to that of the associate physician. Patients interviewed perceived no difference in personal characteristics between pediatricians and PNPs in three of the four settings. In the fourth setting, both were at high levels, but the pediatrician ranked higher than the PNP.

Clinical Competence↗
PubMed1975

Cost of medical care in an experimental study of prepaid group and fee for service practice.

Enrollees in an experimental prepaid group practice did use fewer hospital days and more ambulatory services than did control enrollees. In spite of this, however, savings generated from this reduction in hospital utilization were not enough to pay for the increased ambulatory services provided. Mechanisms for cost control must be sought in areas in addition to hospital savings. Two such areas are preventive services of unproved value, and physicians' services costs.

Ambulatory Care↗
PubMedDate not supplied

Prefrontal sonic treatment: MR findings.

The authors describe the use of MR in a patient who underwent prefrontal sonic treatment for relief of intractable headaches. MR demonstrated well-demarcated regions of encephalomalacia within the white matter of the frontal lobe (with relative sparing of cortex) in a characteristic conical volume that corresponded to the insonified regions.

Aged↗
PubMedDate not supplied

Pathogenesis of acute pulmonary inflammation in strain 2 and strain 13 guinea pigs.

An acute inflammatory response was elicited in the lungs of strain 2 and 13 guinea pigs following immunization and aerosol challenge with ovalbumin. The pulmonary inflammatory response, characterized by hemorrhage and influx of inflammatory cells, progressed from initiation at 12-hours postchallenge through resolution at 96-hours postchallenge. Inflammatory and immunoregulatory cells, recovered by bronchoalveolar lavage, showed quantitative changes in their relative contribution to the bronchoalveolar cell infiltrate over the course of inflammation. Changes in concentrations of macrophages and T cells, in particular, are discussed in terms of their possible contributions to initiation and resolution of acute pulmonary inflammation.

Administration, Inhalation↗