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OP15.02: The patient's knowledge about ultrasound examination at the time of mid‐trimester scan

Objectives: To study patients’ knowledge about ultrasound capabilities and limitations at mid-trimester examination. To compare the results obtained before and after ultrasound examination. Methods: This was a prospective observational study in the main regional screening center. During the 5-month study period, all women attending routine mid-trimester US were offered to fillin a questionnaire regarding their general knowledge of the subsequent examination. The same questionnaire was to be filledin again and handed over immediately after the examination was performed, in order to assess the quality of the information provided during US examination. Answers given before and after ultrasound examination were compared. Results: 410 questionnaires were allocated and 400 women eventually participated (97.5%). 93% of the women thought that US examination was mandatory in prenatal follow up. Before US examination, 23.75% of women felt that they had not received enough information about the examination, and most of the information was heard from the doctor in charge of prenatal care (43%) or from the previous US examination (37%). As an example, 35% of women knew prior to the examination that US examination could be normal even in the presence of a serious problem and 42% thought that it could help in screening for chromosomal abnormalities. After US examination, 16% of patients felt that they did not receive enough information (as compared to prior, P = 0.007), 12.6% were aware that US examination could be normal even in the presence of a serious problem (P = 0.0002) and 67% thought it could help screening for chromosomal abnormalities (P = 0.0002). Conclusions: Prior to examination, women do not have enough information regarding US capabilities and limitations at midtrimester. Our results could help in optimizing the information delivered prior to and during the US examination.