Biomedical subjects

C J Herman

Publications and source records attributed to C J Herman.

93 records · Page 6Linked to original sources

PubMedDate not supplied

Electronic cell volume (coulter volume) distribution of vaginal-cervical cytology samples.

Peripheral blood and buccal cells were used as "model" cell populations to indicate where in the electronic cell volume (ECV) spectrum the individual cell populations of vaginal and cervical irrigations would appear. Four clinical samples each representing a different stage of abnormality were evaluated and compared with the "model" cell populations. The pattern was the same for all of the clinical samples and correlated with the blood and buccal cell populations. Only two distinct ECV populations were observed, the inflammatory cells and the epithelial cells. There was no difference in pattern of any of the volume distributions to indicate abnormality to any degree.

Amplifiers, Electronic↗

PubMedDate not supplied

A pattern classification system for automated cervical cytologic screening based on flow microfluorometric analysis.

A data analytic technique is described for use in automated cervical cytology. The method entails the application of a two-dimensional Fourier transform to histogram data obtained by flow microfluorometry and the subsequent use of the Fourier coefficients as parameters for pattern classification. Analyses were performed on 186 samples including material from 62 positive and 124 negative cases. Cell suspensions were stained with propidium iodide and fluorescein isothiocyanate, and red and green cytofluoresence were measured simultaneously. The two-dimensional histogram data were normalized, the Fourier transform was applied, and a multivariate classifier based on 30 coefficients was assembled using a training set of half the original series. Performance was then assessed on the remaining cases. Overall accuracy was 79.6%, with a false-positive rate of 14.8% and a false-negative rate of 31.2%. The potential applicability of this approach as the basis of a practical screening system is discussed.

Adolescent↗

PubMedDate not supplied

Predictors of the performance of breast and cervical cancer early detection by public health nurses.

INTRODUCTION: Public health nurses (PHNs) often serve as primary care providers, yet few studies have examined their practice patterns in the early detection of breast and cervical cancer. METHODS: We conducted a cross-sectional survey of all PHNs (N = 1,894) employed by the county health departments of North Carolina in July 1993 to describe the predictors of their performance of breast and cervical cancer early detection. The main outcome measures were self-report of cancer prevention and screening services provided for their adult clients, nursing self-confidence for counseling clients about cancer prevention, and training experience. Self-confidence for counseling clients about cancer prevention was measured by asking whether a nurse had sufficient knowledge to educate clients about cancer prevention as well as by obtaining nursing perception of the quality of their clinical skills. RESULTS: The response rate was 78%. Final sample consisted of 1,369 PHNs, after exclusion of 101 nurse practitioners. Nurses reported high performance rates of cancer screening, although self-rating of the quality of their clinical skills was often low. However, nurses who reported having higher quality clinical skills or who reported having sufficient knowledge to educate clients were significantly more likely to report a greater frequency of performing cancer screening and counseling. This self-confidence and performance association was independent of nursing certification to perform screening, job classification, education, knowledge, or continuing education coursework. CONCLUSIONS: Self-confidence is a significant predictor of PHNs' reported performance of cancer screening and counseling. Further studies to verify whether self-report predicts actual performance of cancer early detection are needed.

Adult↗