---
title: "exam_oocyte"
description: "Morphological findings obtained by microscopy of a human oocyte."
---

Morphological findings obtained by microscopy of a human oocyte.

**Purpose.** To record structured observations of a human oocyte.

## Source

| Model | Leg | Role |
|---|---|---|
| `openEHR-EHR-CLUSTER.exam_oocyte.v1` | openEHR | defines this table |

## Columns

| Column | Type | Null | Description | Source |
|---|---|---|---|---|
| `id` | `uuid primary key` | no | Primary key. | — |
| `maturity_of_cumulus_oocyte_complex`<br />`maturity_of_cumulus_oocyte_complex_code`<br />`maturity_of_cumulus_oocyte_complex_system`<br />`maturity_of_cumulus_oocyte_complex_valueset_id` | coded text<br />`text`, `text`, `text`, `text` | yes | Maturity of cumulus-oocyte complex | `/items[at0028]` |
| `oocyte_maturation_stage`<br />`oocyte_maturation_stage_code`<br />`oocyte_maturation_stage_system`<br />`oocyte_maturation_stage_valueset_id` | coded text<br />`text`, `text`, `text`, `text` | yes | Oocyte maturation stage | `/items[at0035]` |
| `oocyte_size_coded_text`<br />`oocyte_size_coded_text_code`<br />`oocyte_size_coded_text_system`<br />`oocyte_size_coded_text_valueset_id`<br />`oocyte_size_quantity_magnitude`<br />`oocyte_size_quantity_units` | coded text<br />`text`, `text`, `text`, `text`, `numeric`, `text` | yes | Oocyte size | `/items[at0039]` |
| `oocyte_shape`<br />`oocyte_shape_code`<br />`oocyte_shape_system`<br />`oocyte_shape_valueset_id` | coded text<br />`text`, `text`, `text`, `text` | yes | Oocyte shape | `/items[at0040]` |
| `cytoplasmic_morphology`<br />`cytoplasmic_morphology_code`<br />`cytoplasmic_morphology_system`<br />`cytoplasmic_morphology_valueset_id` | coded text<br />`text`, `text`, `text`, `text` | yes | Cytoplasmic morphology | `/items[at0041]` |
| `zona_pellucida_thickness`<br />`zona_pellucida_thickness_code`<br />`zona_pellucida_thickness_system`<br />`zona_pellucida_thickness_valueset_id` | coded text<br />`text`, `text`, `text`, `text` | yes | Zona pellucida thickness | `/items[at0042]` |
| `perivitelline_space_size_coded_text`<br />`perivitelline_space_size_coded_text_code`<br />`perivitelline_space_size_coded_text_system`<br />`perivitelline_space_size_coded_text_valueset_id`<br />`perivitelline_space_size_quantity_magnitude`<br />`perivitelline_space_size_quantity_units` | coded text<br />`text`, `text`, `text`, `text`, `numeric`, `text` | yes | Perivitelline space size | `/items[at0043]` |
| `perivitelline_space_morphology`<br />`perivitelline_space_morphology_code`<br />`perivitelline_space_morphology_system`<br />`perivitelline_space_morphology_valueset_id` | coded text<br />`text`, `text`, `text`, `text` | yes | Perivitelline space morphology | `/items[at0078]` |
| `first_polar_body_morphology`<br />`first_polar_body_morphology_code`<br />`first_polar_body_morphology_system`<br />`first_polar_body_morphology_valueset_id` | coded text<br />`text`, `text`, `text`, `text` | yes | First polar body morphology | `/items[at0044]` |
| `metaphase_spindle_size`<br />`metaphase_spindle_size_code`<br />`metaphase_spindle_size_system`<br />`metaphase_spindle_size_valueset_id` | coded text<br />`text`, `text`, `text`, `text` | yes | Metaphase spindle size | `/items[at0045]` |
| `metaphase_spindle_location`<br />`metaphase_spindle_location_code`<br />`metaphase_spindle_location_system`<br />`metaphase_spindle_location_valueset_id` | coded text<br />`text`, `text`, `text`, `text` | yes | Metaphase spindle location | `/items[at0083]` |
| `other_morphological_features` | `text` | yes | Other morphological features | `/items[at0046]` |
| `morphology_grade`<br />`morphology_grade_code`<br />`morphology_grade_system`<br />`morphology_grade_valueset_id` | coded text<br />`text`, `text`, `text`, `text` | yes | Morphology grade | `/items[at0077]` |

## Constraints

```sql
check ((maturity_of_cumulus_oocyte_complex_code is null and maturity_of_cumulus_oocyte_complex_system is null and maturity_of_cumulus_oocyte_complex_valueset_id is null) or (maturity_of_cumulus_oocyte_complex is not null and maturity_of_cumulus_oocyte_complex_code is not null and maturity_of_cumulus_oocyte_complex_system is not null and maturity_of_cumulus_oocyte_complex_valueset_id is not null))
check ((oocyte_maturation_stage_code is null and oocyte_maturation_stage_system is null and oocyte_maturation_stage_valueset_id is null) or (oocyte_maturation_stage is not null and oocyte_maturation_stage_code is not null and oocyte_maturation_stage_system is not null and oocyte_maturation_stage_valueset_id is not null))
check ((oocyte_size_coded_text_code is null and oocyte_size_coded_text_system is null and oocyte_size_coded_text_valueset_id is null) or (oocyte_size_coded_text is not null and oocyte_size_coded_text_code is not null and oocyte_size_coded_text_system is not null and oocyte_size_coded_text_valueset_id is not null))
check ((oocyte_size_quantity_magnitude is null and oocyte_size_quantity_units is null) or (oocyte_size_quantity_magnitude is not null and oocyte_size_quantity_units is not null))
check (oocyte_size_quantity_magnitude is null or (oocyte_size_quantity_units = 'um' and oocyte_size_quantity_magnitude >= 0))
check (num_nonnulls(oocyte_size_coded_text, oocyte_size_quantity_magnitude) <= 1)
check ((oocyte_shape_code is null and oocyte_shape_system is null and oocyte_shape_valueset_id is null) or (oocyte_shape is not null and oocyte_shape_code is not null and oocyte_shape_system is not null and oocyte_shape_valueset_id is not null))
check ((cytoplasmic_morphology_code is null and cytoplasmic_morphology_system is null and cytoplasmic_morphology_valueset_id is null) or (cytoplasmic_morphology is not null and cytoplasmic_morphology_code is not null and cytoplasmic_morphology_system is not null and cytoplasmic_morphology_valueset_id is not null))
check ((zona_pellucida_thickness_code is null and zona_pellucida_thickness_system is null and zona_pellucida_thickness_valueset_id is null) or (zona_pellucida_thickness is not null and zona_pellucida_thickness_code is not null and zona_pellucida_thickness_system is not null and zona_pellucida_thickness_valueset_id is not null))
check ((perivitelline_space_size_coded_text_code is null and perivitelline_space_size_coded_text_system is null and perivitelline_space_size_coded_text_valueset_id is null) or (perivitelline_space_size_coded_text is not null and perivitelline_space_size_coded_text_code is not null and perivitelline_space_size_coded_text_system is not null and perivitelline_space_size_coded_text_valueset_id is not null))
check ((perivitelline_space_size_quantity_magnitude is null and perivitelline_space_size_quantity_units is null) or (perivitelline_space_size_quantity_magnitude is not null and perivitelline_space_size_quantity_units is not null))
check (num_nonnulls(perivitelline_space_size_coded_text, perivitelline_space_size_quantity_magnitude) <= 1)
check ((perivitelline_space_morphology_code is null and perivitelline_space_morphology_system is null and perivitelline_space_morphology_valueset_id is null) or (perivitelline_space_morphology is not null and perivitelline_space_morphology_code is not null and perivitelline_space_morphology_system is not null and perivitelline_space_morphology_valueset_id is not null))
check ((first_polar_body_morphology_code is null and first_polar_body_morphology_system is null and first_polar_body_morphology_valueset_id is null) or (first_polar_body_morphology is not null and first_polar_body_morphology_code is not null and first_polar_body_morphology_system is not null and first_polar_body_morphology_valueset_id is not null))
check ((metaphase_spindle_size_code is null and metaphase_spindle_size_system is null and metaphase_spindle_size_valueset_id is null) or (metaphase_spindle_size is not null and metaphase_spindle_size_code is not null and metaphase_spindle_size_system is not null and metaphase_spindle_size_valueset_id is not null))
check ((metaphase_spindle_location_code is null and metaphase_spindle_location_system is null and metaphase_spindle_location_valueset_id is null) or (metaphase_spindle_location is not null and metaphase_spindle_location_code is not null and metaphase_spindle_location_system is not null and metaphase_spindle_location_valueset_id is not null))
check ((morphology_grade_code is null and morphology_grade_system is null and morphology_grade_valueset_id is null) or (morphology_grade is not null and morphology_grade_code is not null and morphology_grade_system is not null and morphology_grade_valueset_id is not null))
```

## References

| Columns | Target | On delete |
|---|---|---|
| `maturity_of_cumulus_oocyte_complex_valueset_id, maturity_of_cumulus_oocyte_complex_code, maturity_of_cumulus_oocyte_complex_system, maturity_of_cumulus_oocyte_complex` | [`valueset_code`](/docs/tables/valueset_code) | restrict |
| `oocyte_maturation_stage_valueset_id, oocyte_maturation_stage_code, oocyte_maturation_stage_system, oocyte_maturation_stage` | [`valueset_code`](/docs/tables/valueset_code) | restrict |
| `oocyte_size_coded_text_valueset_id, oocyte_size_coded_text_code, oocyte_size_coded_text_system, oocyte_size_coded_text` | [`valueset_code`](/docs/tables/valueset_code) | restrict |
| `oocyte_shape_valueset_id, oocyte_shape_code, oocyte_shape_system, oocyte_shape` | [`valueset_code`](/docs/tables/valueset_code) | restrict |
| `cytoplasmic_morphology_valueset_id, cytoplasmic_morphology_code, cytoplasmic_morphology_system, cytoplasmic_morphology` | [`valueset_code`](/docs/tables/valueset_code) | restrict |
| `zona_pellucida_thickness_valueset_id, zona_pellucida_thickness_code, zona_pellucida_thickness_system, zona_pellucida_thickness` | [`valueset_code`](/docs/tables/valueset_code) | restrict |
| `perivitelline_space_size_coded_text_valueset_id, perivitelline_space_size_coded_text_code, perivitelline_space_size_coded_text_system, perivitelline_space_size_coded_text` | [`valueset_code`](/docs/tables/valueset_code) | restrict |
| `perivitelline_space_morphology_valueset_id, perivitelline_space_morphology_code, perivitelline_space_morphology_system, perivitelline_space_morphology` | [`valueset_code`](/docs/tables/valueset_code) | restrict |
| `first_polar_body_morphology_valueset_id, first_polar_body_morphology_code, first_polar_body_morphology_system, first_polar_body_morphology` | [`valueset_code`](/docs/tables/valueset_code) | restrict |
| `metaphase_spindle_size_valueset_id, metaphase_spindle_size_code, metaphase_spindle_size_system, metaphase_spindle_size` | [`valueset_code`](/docs/tables/valueset_code) | restrict |
| `metaphase_spindle_location_valueset_id, metaphase_spindle_location_code, metaphase_spindle_location_system, metaphase_spindle_location` | [`valueset_code`](/docs/tables/valueset_code) | restrict |
| `morphology_grade_valueset_id, morphology_grade_code, morphology_grade_system, morphology_grade` | [`valueset_code`](/docs/tables/valueset_code) | restrict |

## Referenced by

- [`embryo_assessment_morphological_findings`](/docs/tables/embryo_assessment_morphological_findings) via `exam_oocyte_id`

## Value sets

| Value set | Codes |
|---|---|
| `org.openehr::openEHR-EHR-CLUSTER.exam_oocyte.v1/cytoplasmic_morphology` | 7 |
| `org.openehr::openEHR-EHR-CLUSTER.exam_oocyte.v1/first_polar_body_morphology` | 5 |
| `org.openehr::openEHR-EHR-CLUSTER.exam_oocyte.v1/maturity_of_cumulus_oocyte_complex` | 4 |
| `org.openehr::openEHR-EHR-CLUSTER.exam_oocyte.v1/metaphase_spindle_location` | 2 |
| `org.openehr::openEHR-EHR-CLUSTER.exam_oocyte.v1/metaphase_spindle_size` | 3 |
| `org.openehr::openEHR-EHR-CLUSTER.exam_oocyte.v1/oocyte_maturation_stage` | 3 |
| `org.openehr::openEHR-EHR-CLUSTER.exam_oocyte.v1/oocyte_shape` | 2 |
| `org.openehr::openEHR-EHR-CLUSTER.exam_oocyte.v1/oocyte_size` | 3 |
| `org.openehr::openEHR-EHR-CLUSTER.exam_oocyte.v1/perivitelline_space_morphology` | 2 |
| `org.openehr::openEHR-EHR-CLUSTER.exam_oocyte.v1/perivitelline_space_size` | 3 |
| `org.openehr::openEHR-EHR-CLUSTER.exam_oocyte.v1/zona_pellucida_thickness` | 3 |