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A Comparison of Flexible and Nonflexible Plastic Cannulae for Performing First Trimester Abortion
Author(s) -
Andolsek Lidija,
Miller Eva,
Bernard Roger
Publication year - 1976
Publication title -
international journal of gynecology and obstetrics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.895
H-Index - 97
eISSN - 1879-3479
pISSN - 0020-7292
DOI - 10.1002/j.1879-3479.1976.tb00595.x
Subject(s) - medicine , cannula , vacuum aspiration , abortion , gestational age , gestation , marital status , obstetrics , surgery , pregnancy , gynecology , family planning , research methodology , population , environmental health , biology , genetics
The safety and effectiveness of flexible and nonflexible plastic cannulae used in vacuum aspiration abortion for patients at 6 to 12 weeks' gestation were evaluated in a study of 1 100 physically healthy women in Ljubljana, Yugoslavia. To minimize study biases, each type of cannulae was randomly assigned to 550 patients. To minimize evaluator bias, a second physician who was kept unaware of which cannula was used for a particular patient was responsible for evaluating patients after the procedures. Both groups of patients were similar with respect to age, parity, marital status, formal education and gestational age. Higher rates of retained tissue and cannula obstruction were obtained with the flexible cannula. The two types of cannulae were not significantly different with respect to the other criteria of evaluation.