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Biomedical subjects

E Lerner

Publications and source records attributed to E Lerner.

At least 55 records · Page 3Linked to original sources
PubMed1977

Computer-assisted monocyte esterase assay by flow-cytophotometry.

A Wang model 2200 computer has been interfaced with the Bio/Physics Systems, Inc. model 6300 Cytograf and model 2100 Distribution Analyzer. Using a custom designed software program, in conjunction with an azo-dye technic for staining monocytes for nonspecific esterase activity, it has been possible to obtain rapid and reliable data concerning relative values for intracellular monocyte esterase activity. The method is based on measuring the axial light-loss voltage signal for each of one thousand stained monocytes. Individual stained monocytes were assigned to one of four groups (A, B, C, D), dependent upon the magnitude of the signal and were given different rating values (1, 2, 3, 4) according to their group designation. A "score" was derived for each blood sample by multiplying the percentage of cells (monocytes) in each group category by the appropriate factor and summing these values. The technic permits rapid objective assessment of intracellular nonspecific esterase activity in monocytes suspended in a mixed cell population. Both Gaussian and bi-modal patterns for monocyte esterase were observed. The latter suggests a dual monocyte population.

Computers↗
PubMed1976

Assessment of monocyte esterase activity by flow cytophotometry.

An azo dye supravital method has been devised for selectively staining human monocytes in suspension for nonspecific esterase activity. Stained cells can be identified and rapidly enumerated by presenting the suspension of stained cells to the Cytograf, a flow-through cell discriminating cytophotometer. The intensity of stain is proportional to the intracellular esterase activity. By analysis of the oscilloscope display, it has been possible to obtain relative data concerning the degree of activity of monocyte nonspecific esterase activity. These observations suggest a unique approach to the measurement of intracellular enzyme activity in selected cells in a mixed population.

Autoanalysis↗
PubMed1975

Associated diagnoses which complicate rehabilitation of the patient with bilateral lower extremity amputations.

Cardiopulmonary problems were the most common limiting factor in the rehabilitation of 42 bilateral lower limb amputees. Diabetes mellitus and local stump problems, most common in below knee amputees, delayed rehabilitation but, subsequently, obtained the highest goals. Thirty of the 42 amputees finally were self sufficient; the average time required was 30 weeks to maximum benefit.

Adult↗
PubMed1975

Rehabilitation after bilateral lower extremity amputation.

Fourty-four men (average age, 61.5 years) who had undergone amputation of both lower extremities were studied at a Veterans Administration hospital. Vascular insufficiency was the most frequent reason for amputation. In 26 of the patients bilateral below-knee amputations had been performed. Although diabetes mellitus was present in 26 of the patients, it severely hampered rehabilitation in only four. Twenty-nine (nearly 65%) of the 44 patients became totally independent in daily functions. However, the average time required for maximum rehabilitation was almost 30 weeks.

Aged↗
PubMed1975

What influence does age have on rehabilitation of amputees?

A study of 194 male lower extremity amputees, with an average age of 56.8 years, showed that vascular disease is the most common cause of limb loss at all ages. Increasing age was correlated with an increasing incidence of bilateral amputation and arteriosclerotic and pulmonary problems, lower goals and levels of achievement, increased mortality during therapy, fewer amputees who were able to return home, an increased number of aids (cane, crutches, wheelchair), and a longer rehabilitation period. Many patients over age 65 required nearly a year of rehabilitation to achieve maximum benefit.

Adult↗
PubMedDate not supplied

The diagnosis of bacterial peritonitis: comparison of pH, lactate concentration and leukocyte count.

It has been suggested that the hydrogen ion and lactate concentrations may be superior to the polymorphonuclear cell count (PMN) in ascitic fluid, in the diagnosis of bacterial peritonitis (BP). In order to compare the diagnostic accuracy of ascitic fluid measurements of pH, lactate, glucose and the PMN in BP, we analyzed the ascitic fluids of 70 consecutive patients in whom pH, lactate, glucose and the PMN count were measured in ascitic fluid and arterial blood. Fifty-one were cirrhotic patients with uninfected ascites, 14 had BP, one tuberculous peritonitis, two ascites secondary to peritoneal metastases and two with neoplastic liver involvement but without peritoneal metastases. Statistically, highly significant differences between patients with uninfected ascitic fluid and BP were observed for ascitic fluid PMN (122 vs. 2,686 per cu mm), ascitic fluid pH (7.45 vs. 7.24), arterial-ascitic fluid pH gradient (0.02 vs. 0.22), arterial lactate (12 vs. 25 mg per dl), ascitic fluid lactate (15 vs. 45 mg per dl) and arterial-ascitic fluid lactate gradient (-3 vs. -20 mg per dl). The most reliable diagnostic cutoff levels were determined for each of the parameters: PMN greater than 500 per cu mm; ascitic fluid pH less than 7.35; arterial-ascitic fluid pH gradient greater than 0.10; ascitic fluid lactate greater than 25 mg per dl; arterial-ascitic fluid lactate gradient less than -20 mg per dl; ascitic fluid glucose less than 60 mg per dl; arterial-ascitic fluid glucose gradient greater than 60 mg per dl.(ABSTRACT TRUNCATED AT 250 WORDS)

Ascitic Fluid↗