Question Bank – OB 2nd/3rd Trimester

When it comes to using color Doppler in the evaluation of amniotic fluid, which of the following are correct?

All of the following steps can help you diagnose the type of transverse lie except:

What are ways that can help you to differentiate between identical twins with one placenta and two sacs (monochorionic/diamniotic) and fraternal twins that have two placentas/two sacs (dichorionic/diamniotic) on bedside sono?

The basic 2^nd and 3^rd trimester POCUS exam includes all the following except:

Acceptable methods of amniotic fluid measurement include all of the following except:

You are seeing a patient on L&D with concerns for decreased fetal movement. The fetal heart strip looks reactive, and you are assessing her amniotic fluid volume. You have found a 4 cm x 0.5 cm pocket, a 2.3 cm x 1.5 cm pocket, and a 1.5 x 1.1 cm pocket. At this point:

What is the best tool to quickly determine presence of a placenta previa?

An example of longitudinal lie is:

A coworker on L&D calls you over because she cannot find the fetal heart beat with the external monitor. You place the ultrasound probe on the patient and find the fetal heart beating approximately one time per second. At this point you should:

You are having trouble finding the fetal heart. What are some techniques you can use?

You are evaluating a patient with a BMI of 50 and are having difficulty confirming the number of fetuses. Techniques that may help with this are:

As evidenced by the article by Dr. Sachita Shah, a typical 2^nd & 3^rd trimester POCUS exam can be accurately completed in:

What “hand’s on” maneuver can be helpful to get an overview before starting your bedside OB sono?

You are evaluating a term patient without prenatal care who presents with vaginal bleeding and mild contractions. You are trying to rule out placenta previa. Techniques that can help you include all of the following except:

With the probe in transverse orientation low near the maternal symphysis pubis, seeing two eyes at the top of the echogenic skull looking up toward the probe helps to diagnose which position?

A clip (or series of clips) with how many seconds of fetal breathing activity should be recorded for a biophysical profile?

The modified biophysical profile excludes which of the following elements of a full biophysical profile examination?

The following clip is saved as part of a biophysical profile. It meets criteria for the “fetal tone” portion of a BPP. 

The following clip would meet the criteria for which component of a full biophysical profile?

The addition of color doppler to this area of the third trimester ultrasound examination helps confirm the presence of?

Which of the following anatomical landmarks in this clip helps document the presence of cephalic presentation?

After what gestational age can femur length measurement, rather than crown rump length, be used in the estimation of fetal weight and gestation?

Important components of the accurate measurement of femur length include which of the following? (Check all that apply). 

The landmark noted in accurately measured abdominal circumference is the:

The landmark noted in accurately measured abdominal circumference is the:

The single deepest pocket measurement here as part of a modified biophysical profile is:

Which of the following fetal presentations is demonstrated in this image?

The following image shows which placental location?

Sliding the probe in a sagittal plane with appropriate probe orientation demonstrates which of the following fetal presentations?

The following image shows which placental location?

The following image shows which placental location?

A correctly measured biparietal diameter (BPD) measures from the ____ edge of the ossified calvarium to the _____ edge of the calvarium. 

Internal cranial anatomy can also be used during labor to help assess which position the baby is facing. In this case, which direction is the face pointing toward?

This single deepest pocket measurement is accurately performed. (True/False)

Which of the following are considered components of the limited third trimester OB ultrasound examination for labor and delivery? (Check all that apply)

The amniotic fluid index in this case is measured to be? 

What is the placental location in this series of images?

Sliding the probe in a sagittal plane with appropriate probe orientation in this third trimester pregnancy demonstrates which of the following placental locations?

Sliding the probe in a sagittal plane with appropriate probe orientation in this third trimester pregnancy demonstrates which of the following fetal presentations?