Intermediate
Technical
IVT
fetal station
Pronunciation: STAY-shun
Measurement of the presenting part's descent through the maternal pelvis relative to the ischial spines.
Full Definition
Fetal station describes the relationship between the presenting part of the fetus and the maternal ischial spines, which serve as the reference point (station 0). Stations are measured in centimeters above (-5 to -1) or below (+1 to +5) the ischial spines. Negative numbers indicate the presenting part is above the spines (not yet engaged), while positive numbers show descent below the spines toward delivery. Station assessment is crucial for monitoring labor progress and determining delivery method.
Usage
Usage note: Recorded as negative or positive numbers; station 0 equals engagement at ischial spines.
In Context
- "Vaginal examination revealed the fetal head at -1 station with continued descent expected." — Labor progress documentation
- "The presenting part advanced from -3 to +2 station over four hours of active labor." — Labor curve analysis
Also known as
station
descent
presenting part level
Don't confuse with
cervical dilation
engagement level