Table 1.
Details of the OBUS training course.
| Didactic curriculum for OBUS educational module | Time |
|---|---|
| Mechanics of transabdominal and transvaginal OBUS | 5 minutes |
| Normal US findings in 1st trimester pregnancy | 10 minutes |
| US findings in ectopic pregnancy | 10 minutes |
| Other abnormal US findings in early pregnancy (fetal demise, molar pregnancy) | 10 minutes |
| Determining EGA by CRL | 5 minutes |
| Measuring FHR using M-mode | 5 minutes |
| Fetal biometry in later pregnancy (biparietal diameter, head circumference, abdominal circumference, femur length) | 10 minutes |
| Determination of fetal lie | 5 minutes |
| Hands-on US practice with live models | 120 minutes |
| 1 station TV, non-pregnant | |
| 1 station TA, non-pregnant | |
| 1 station TA, pregnant | |
| 1 testing station TA, pregnant |
OBUS, obstetrical ultrasound; US, ultrasound; EGA, estimated gestational age; CRL, crown-rump length; FHR, fetal heart rate; TV, transvaginal; TA, transabdominal