PubMed · 6136699
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1983-09-03. Avoiding damage to the cervix.. https://pubmed.ncbi.nlm.nih.gov/6136699/
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OBJECTIVE: Our purpose was to assess the accuracy and intraobserver variability of clinical cervical diameter measurements among obstetric health care providers. STUDY DESIGN: Polyvinyl chloride pipes 1 to 10 cm in diameter were mounted in cardboard boxes and used to simulate cervical examinations. The boxes were designed so that the examiner had to rely solely on proprioception to determine the inner diameter. RESULTS: A total of 1574 simulated cervical diameter measurements were obtained from 102 different examiners in a two-part study. The overall accuracy for determining the exact diameter was 56.3%, which improved to 89.5% when an error of +/- 1 cm was allowed. Intraobserver variability for a given diameter measurement was 52.1%, which decreased to 10.5% when an error of +/- 1 cm was allowed. CONCLUSIONS: Cervical diameter measurements obtained by digital examination are precise when an error of +/- 1 cm is allowed for. Intraobserver variability is > 50% and is an important consideration when evaluating dysfunctional labor.
OBJECTIVE: Our purpose was to evaluate the sensitivity and accuracy of a new, nonradioactive human papillomavirus deoxyribonucleic acid detection method. STUDY DESIGN: Cervical samples from 520 women were assayed for human papillomavirus deoxyribonucleic acid with both the Hybrid Capture test and polymerase chain reaction. RESULTS: Human papillomavirus deoxyribonucleic acid was detected with Hybrid Capture in 106 (42%) of 254 samples from women with no evidence of cervical intraepithelial neoplasia and 211 (79%) of 266 with cervical intraepithelial lesions or cervical cancer. There was a good correlation between Hybrid Capture and polymerase chain reaction. Hybrid Capture correctly identified 92% of samples found to contain a human papillomavirus type with a high or intermediate oncogenic risk with polymerase chain reaction. Although Hybrid Capture can quantify the amount of human papillomavirus deoxyribonucleic acid present in a sample, no correlation was observed between the relative amount of human papillomavirus deoxyribonucleic acid detected with Hybrid Capture and the grade of cervical lesion. CONCLUSION: The Hybrid Capture test is a sensitive and accurate method for identifying human papillomavirus types of high and intermediate oncogenic risk in clinical specimens.