Fetal Lie Lookup
Bounded offline reference: Fetal lie describes the relationship between fetal and maternal longitudinal axes. Source: Obstetric anatomical terminology. No automatic examination, delivery recommendation or safe-management conclusion. Explicit topic keys: longitudinal, transverse, oblique. Not a full/current corpus, diagnosis, treatment recommendation or safety certification.
Description
Fetal lie describes the relationship between the fetal and maternal long axes.
Fetal lie describes the relationship between the fetal and maternal long axes.1
Lie is distinct from which part presents and how that part is oriented.
When to use Fetal Lie Lookup
Use this tool to read a bounded explanation for an exact reference topic. Establish the observation date, units, measurement context and independently applicable clinical reference or calibrated model.
How to use Fetal Lie Lookup and understand its results
- Establish the observation date, units, measurement context and independently applicable clinical reference or calibrated model.
- Enter topic, using the field meanings and rules below, then run the tool.
- Read result.text. Use the units and sign conventions below.
- Correct any reported input issue and run again. Before using a successful result, check the stated units, signs, reference scope and observation coverage.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| topic | Topic | string | Required |
Choose one exact topic token from the table. The implementation looks up the stored value and returns it in the documented output field. Matching is case-sensitive; unrecognized tokens fail. This is an offline bounded reference, not a live catalogue or independent attribution.
| Topic token | Stored value |
|---|---|
| longitudinal | Axes broadly aligned. |
| transverse | Axes broadly crosswise. |
| oblique | Intermediate oblique relationship; actual presentation/context separate. |
value=referenceTable[exactToken] Use the matching field units and the exact boundary, ordering and reference rules above.
| Output field | Meaning | Value type |
|---|---|---|
| result | Structured result; its nested fields below contain the actual calculation or selected reference | object |
| result.text | Text | string |
{
"input": {
"topic": "longitudinal"
},
"output": {
"result": {
"text": "Axes broadly aligned."
}
}
}Limitations and assumptions
Dating evidence, acquisition conditions and applicable clinical references remain independently established. The output describes supplied observations or a conditional model without diagnosing an outcome, choosing a dose or verifying clinical applicability.
Missing required fields, unknown fields, wrong types and violated rules return input issues. Numeric values and outputs must be finite. Extremely large composite outputs are rejected.
Alternative or Complementary methods
For a related step, use Fetal Head Station Calculator: Fetal-head station describes the assessed level relative to the ischial-spine reference plane. For a complementary comparison, use Fetal Presentation Lookup: Fetal presentation names the part presented toward the birth canal.
References
-
Fetal Lie Lookup — tool.io
Similar or alternative tools
- Fetal Head Station Calculator
Fetal-head station describes the assessed level relative to the ischial-spine reference plane.
- Fetal Presentation Lookup
Fetal presentation names the part presented toward the birth canal.