---
title: "spirometry_result"
description: "Pulmonary function test results using a spirometer or peak flow meter."
---

Pulmonary function test results using a spirometer or peak flow meter.

**Purpose.** To record the results of a pulmonary function test performed using a spirometer or peak flow meter.

## Source

| Model | Leg | Role |
|---|---|---|
| `openEHR-EHR-OBSERVATION.spirometry_result.v2` | openEHR | defines this table |

## Columns

| Column | Type | Null | Description | Source |
|---|---|---|---|---|
| `id` | `uuid primary key` | no | Primary key. | — |
| `form_id` | `uuid` → [`form`](/docs/tables/form) | no | The form this entry was recorded on. | — |
| `form_block_id` | `uuid` | yes | The block within the form, when the entry is bound to one. | — |
| `forced_expiratory_time_fet` | `interval` | yes | Forced expiratory time (FET) | `/data[at0001]/events[at0002]/data[at0003]/items[at0013]` |
| `clinical_interpretation`<br />`clinical_interpretation_code`<br />`clinical_interpretation_system`<br />`clinical_interpretation_valueset_id` | coded text<br />`text`, `text`, `text`, `text` | yes | Clinical interpretation | `/data[at0001]/events[at0002]/data[at0003]/items[at0130]` |
| `comment` | `text` | yes | Comment | `/data[at0001]/events[at0002]/data[at0003]/items[at0101]` |
| `position`<br />`position_code`<br />`position_system`<br />`position_valueset_id` | coded text<br />`text`, `text`, `text`, `text` | yes | Position | `/data[at0001]/events[at0002]/state[at0031]/items[at0115]` |
| `confounding_factors` | `text` | yes | Confounding factors | `/data[at0001]/events[at0002]/state[at0031]/items[at0098]` |
| `type_of_measurement`<br />`type_of_measurement_code`<br />`type_of_measurement_system`<br />`type_of_measurement_valueset_id` | coded text<br />`text`, `text`, `text`, `text` | yes | Type of measurement | `/protocol[at0029]/items[at0196]` |
| `method`<br />`method_code`<br />`method_system`<br />`method_valueset_id` | coded text<br />`text`, `text`, `text`, `text` | yes | Method | `/protocol[at0029]/items[at0199]` |
| `challenge_reversibility`<br />`challenge_reversibility_code`<br />`challenge_reversibility_system`<br />`challenge_reversibility_valueset_id` | coded text<br />`text`, `text`, `text`, `text` | yes | Challenge/reversibility | `/protocol[at0029]/items[at0192]` |

## Constraints

```sql
check ((clinical_interpretation_code is null and clinical_interpretation_system is null and clinical_interpretation_valueset_id is null) or (clinical_interpretation is not null and clinical_interpretation_code is not null and clinical_interpretation_system is not null and clinical_interpretation_valueset_id is not null))
check ((position_code is null and position_system is null and position_valueset_id is null and position is null) or (position is not null and position_code is not null and position_system is not null and position_valueset_id is not null))
check ((type_of_measurement_code is null and type_of_measurement_system is null and type_of_measurement_valueset_id is null and type_of_measurement is null) or (type_of_measurement is not null and type_of_measurement_code is not null and type_of_measurement_system is not null and type_of_measurement_valueset_id is not null))
check ((method_code is null and method_system is null and method_valueset_id is null) or (method is not null and method_code is not null and method_system is not null and method_valueset_id is not null))
check ((challenge_reversibility_code is null and challenge_reversibility_system is null and challenge_reversibility_valueset_id is null and challenge_reversibility is null) or (challenge_reversibility is not null and challenge_reversibility_code is not null and challenge_reversibility_system is not null and challenge_reversibility_valueset_id is not null))
```

## Unique

- `form_block_id`

## References

| Columns | Target | On delete |
|---|---|---|
| `form_id` | [`form`](/docs/tables/form) | cascade |
| `form_id, form_block_id` | [`form_block`](/docs/tables/form_block) | cascade |
| `clinical_interpretation_valueset_id, clinical_interpretation_code, clinical_interpretation_system, clinical_interpretation` | [`valueset_code`](/docs/tables/valueset_code) | restrict |
| `position_valueset_id, position_code, position_system, position` | [`valueset_code`](/docs/tables/valueset_code) | restrict |
| `type_of_measurement_valueset_id, type_of_measurement_code, type_of_measurement_system, type_of_measurement` | [`valueset_code`](/docs/tables/valueset_code) | restrict |
| `method_valueset_id, method_code, method_system, method` | [`valueset_code`](/docs/tables/valueset_code) | restrict |
| `challenge_reversibility_valueset_id, challenge_reversibility_code, challenge_reversibility_system, challenge_reversibility` | [`valueset_code`](/docs/tables/valueset_code) | restrict |

## Referenced by

- [`spirometry_result_volume`](/docs/tables/spirometry_result_volume) via `spirometry_result_id`
- [`spirometry_result_flow_rate`](/docs/tables/spirometry_result_flow_rate) via `spirometry_result_id`
- [`spirometry_result_pressure`](/docs/tables/spirometry_result_pressure) via `spirometry_result_id`
- [`spirometry_result_ratio`](/docs/tables/spirometry_result_ratio) via `spirometry_result_id`
- [`spirometry_result_multimedia_representation`](/docs/tables/spirometry_result_multimedia_representation) via `spirometry_result_id`
- [`spirometry_result_device`](/docs/tables/spirometry_result_device) via `spirometry_result_id`
- [`spirometry_result_predicted_results_source`](/docs/tables/spirometry_result_predicted_results_source) via `spirometry_result_id`

## Indexes

- `spirometry_result_form_id_idx` on `form_id`

## Child tables

7 tables hang off `spirometry_result`, one row per repetition.

### `spirometry_result_volume`

Child table — one row per repetition, deleted with its parent.

| Column | Type | Null | Description | Source |
|---|---|---|---|---|
| `id` | `uuid primary key` | no | Primary key. | — |
| `spirometry_result_id` | `uuid` → [`spirometry_result`](/docs/tables/spirometry_result) | no | — | — |
| `position` | `integer` | no | Order of this row within its parent, from zero. | — |
| `result_magnitude`<br />`result_units` | quantity<br />`numeric`, `text` | yes | Result | `/data[at0001]/events[at0002]/data[at0003]/items[at0052]/items[at0053]` |
| `predicted_result_magnitude`<br />`predicted_result_units` | quantity<br />`numeric`, `text` | yes | Predicted result | `/data[at0001]/events[at0002]/data[at0003]/items[at0052]/items[at0054]` |
| `measured_predicted_ratio_numerator`<br />`measured_predicted_ratio_denominator` | numeric, numeric<br />`numeric`, `numeric` | yes | Measured/predicted ratio | `/data[at0001]/events[at0002]/data[at0003]/items[at0052]/items[at0044]` |

#### Constraints

```sql
check ((result_magnitude is null and result_units is null) or (result_magnitude is not null and result_units is not null))
check (result_magnitude is null or (result_units = 'L' and result_magnitude >= 0) or (result_units = 'mL' and result_magnitude >= 0))
check ((predicted_result_magnitude is null and predicted_result_units is null) or (predicted_result_magnitude is not null and predicted_result_units is not null))
check (predicted_result_magnitude is null or (predicted_result_units = 'L' and predicted_result_magnitude >= 0) or (predicted_result_units = 'mL' and predicted_result_magnitude >= 0))
check ((measured_predicted_ratio_numerator is null and measured_predicted_ratio_denominator is null) or (measured_predicted_ratio_numerator is not null and measured_predicted_ratio_denominator is not null))
check (measured_predicted_ratio_denominator is null or measured_predicted_ratio_denominator <> 0)
check (measured_predicted_ratio_denominator is null or measured_predicted_ratio_denominator = 100)
check (measured_predicted_ratio_numerator is null or measured_predicted_ratio_numerator >= 0)
```

#### Unique

- `spirometry_result_id, position`

#### References

| Columns | Target | On delete |
|---|---|---|
| `spirometry_result_id` | [`spirometry_result`](/docs/tables/spirometry_result) | cascade |

### `spirometry_result_flow_rate`

Child table — one row per repetition, deleted with its parent.

| Column | Type | Null | Description | Source |
|---|---|---|---|---|
| `id` | `uuid primary key` | no | Primary key. | — |
| `spirometry_result_id` | `uuid` → [`spirometry_result`](/docs/tables/spirometry_result) | no | — | — |
| `position` | `integer` | no | Order of this row within its parent, from zero. | — |
| `result_magnitude`<br />`result_units` | quantity<br />`numeric`, `text` | yes | Result | `/data[at0001]/events[at0002]/data[at0003]/items[at0057]/items[at0058]` |
| `predicted_result_magnitude`<br />`predicted_result_units` | quantity<br />`numeric`, `text` | yes | Predicted result | `/data[at0001]/events[at0002]/data[at0003]/items[at0057]/items[at0008]` |
| `measured_predicted_ratio_numerator`<br />`measured_predicted_ratio_denominator` | numeric, numeric<br />`numeric`, `numeric` | yes | Measured/predicted ratio | `/data[at0001]/events[at0002]/data[at0003]/items[at0057]/items[at0122]` |

#### Constraints

```sql
check ((result_magnitude is null and result_units is null) or (result_magnitude is not null and result_units is not null))
check (result_magnitude is null or (result_units = 'L/s' and result_magnitude >= 0) or (result_units = 'mL/s' and result_magnitude >= 0) or (result_units = 'L/min' and result_magnitude >= 0))
check ((predicted_result_magnitude is null and predicted_result_units is null) or (predicted_result_magnitude is not null and predicted_result_units is not null))
check (predicted_result_magnitude is null or (predicted_result_units = 'L/s' and predicted_result_magnitude >= 0) or (predicted_result_units = 'mL/s' and predicted_result_magnitude >= 0) or (predicted_result_units = 'L/min' and predicted_result_magnitude >= 0))
check ((measured_predicted_ratio_numerator is null and measured_predicted_ratio_denominator is null) or (measured_predicted_ratio_numerator is not null and measured_predicted_ratio_denominator is not null))
check (measured_predicted_ratio_denominator is null or measured_predicted_ratio_denominator <> 0)
check (measured_predicted_ratio_denominator is null or measured_predicted_ratio_denominator = 100)
check (measured_predicted_ratio_numerator is null or measured_predicted_ratio_numerator >= 0)
```

#### Unique

- `spirometry_result_id, position`

#### References

| Columns | Target | On delete |
|---|---|---|
| `spirometry_result_id` | [`spirometry_result`](/docs/tables/spirometry_result) | cascade |

### `spirometry_result_pressure`

Child table — one row per repetition, deleted with its parent.

| Column | Type | Null | Description | Source |
|---|---|---|---|---|
| `id` | `uuid primary key` | no | Primary key. | — |
| `spirometry_result_id` | `uuid` → [`spirometry_result`](/docs/tables/spirometry_result) | no | — | — |
| `position` | `integer` | no | Order of this row within its parent, from zero. | — |
| `result_magnitude`<br />`result_units` | quantity<br />`numeric`, `text` | yes | Result | `/data[at0001]/events[at0002]/data[at0003]/items[at0156]/items[at0165]` |
| `predicted_result_magnitude`<br />`predicted_result_units` | quantity<br />`numeric`, `text` | yes | Predicted result | `/data[at0001]/events[at0002]/data[at0003]/items[at0156]/items[at0166]` |
| `measured_predicted_ratio_numerator`<br />`measured_predicted_ratio_denominator` | numeric, numeric<br />`numeric`, `numeric` | yes | Measured/predicted ratio | `/data[at0001]/events[at0002]/data[at0003]/items[at0156]/items[at0167]` |

#### Constraints

```sql
check ((result_magnitude is null and result_units is null) or (result_magnitude is not null and result_units is not null))
check (result_magnitude is null or (result_units = 'cm[H2O]' and result_magnitude >= 0) or (result_units = 'mm[Hg]' and result_magnitude >= 0))
check ((predicted_result_magnitude is null and predicted_result_units is null) or (predicted_result_magnitude is not null and predicted_result_units is not null))
check (predicted_result_magnitude is null or (predicted_result_units = 'cm[H2O]' and predicted_result_magnitude >= 0) or (predicted_result_units = 'mm[Hg]' and predicted_result_magnitude >= 0))
check ((measured_predicted_ratio_numerator is null and measured_predicted_ratio_denominator is null) or (measured_predicted_ratio_numerator is not null and measured_predicted_ratio_denominator is not null))
check (measured_predicted_ratio_denominator is null or measured_predicted_ratio_denominator <> 0)
check (measured_predicted_ratio_denominator is null or measured_predicted_ratio_denominator = 100)
check (measured_predicted_ratio_numerator is null or measured_predicted_ratio_numerator >= 0)
```

#### Unique

- `spirometry_result_id, position`

#### References

| Columns | Target | On delete |
|---|---|---|
| `spirometry_result_id` | [`spirometry_result`](/docs/tables/spirometry_result) | cascade |

### `spirometry_result_ratio`

Child table — one row per repetition, deleted with its parent.

| Column | Type | Null | Description | Source |
|---|---|---|---|---|
| `id` | `uuid primary key` | no | Primary key. | — |
| `spirometry_result_id` | `uuid` → [`spirometry_result`](/docs/tables/spirometry_result) | no | — | — |
| `position` | `integer` | no | Order of this row within its parent, from zero. | — |
| `result_numerator`<br />`result_denominator` | numeric, numeric<br />`numeric`, `numeric` | yes | Result | `/data[at0001]/events[at0002]/data[at0003]/items[at0055]/items[at0056]` |
| `predicted_result_numerator`<br />`predicted_result_denominator` | numeric, numeric<br />`numeric`, `numeric` | yes | Predicted result | `/data[at0001]/events[at0002]/data[at0003]/items[at0055]/items[at0018]` |

#### Constraints

```sql
check ((result_numerator is null and result_denominator is null) or (result_numerator is not null and result_denominator is not null))
check (result_denominator is null or result_denominator <> 0)
check (result_denominator is null or result_denominator = 100)
check (result_numerator is null or result_numerator >= 0)
check ((predicted_result_numerator is null and predicted_result_denominator is null) or (predicted_result_numerator is not null and predicted_result_denominator is not null))
check (predicted_result_denominator is null or predicted_result_denominator <> 0)
check (predicted_result_denominator is null or predicted_result_denominator = 100)
check (predicted_result_numerator is null or predicted_result_numerator >= 0)
```

#### Unique

- `spirometry_result_id, position`

#### References

| Columns | Target | On delete |
|---|---|---|
| `spirometry_result_id` | [`spirometry_result`](/docs/tables/spirometry_result) | cascade |

### `spirometry_result_multimedia_representation`

Child table — one row per repetition, deleted with its parent.

| Column | Type | Null | Description | Source |
|---|---|---|---|---|
| `id` | `uuid primary key` | no | Primary key. | — |
| `spirometry_result_id` | `uuid` → [`spirometry_result`](/docs/tables/spirometry_result) | no | — | — |
| `position` | `integer` | no | Order of this row within its parent, from zero. | — |
| `attachment_id` | `uuid` | no | Multimedia representation | `/data[at0001]/events[at0002]/data[at0003]/items[at0131]` |

#### Unique

- `spirometry_result_id, position`
- `spirometry_result_id, attachment_id`

#### References

| Columns | Target | On delete |
|---|---|---|
| `spirometry_result_id` | [`spirometry_result`](/docs/tables/spirometry_result) | cascade |
| `attachment_id` | [`attachment`](/docs/tables/attachment) | restrict |

#### Indexes

- `spirometry_result_multimedia_representation_attachment_id_idx` on `attachment_id`

### `spirometry_result_device`

Child table — one row per repetition, deleted with its parent.

| Column | Type | Null | Description | Source |
|---|---|---|---|---|
| `id` | `uuid primary key` | no | Primary key. | — |
| `spirometry_result_id` | `uuid` → [`spirometry_result`](/docs/tables/spirometry_result) | no | — | — |
| `position` | `integer` | no | Order of this row within its parent, from zero. | — |
| `device_id` | `uuid` | no | Device | `/protocol[at0029]/items[at0030]` |

#### Unique

- `spirometry_result_id, position`
- `spirometry_result_id, device_id`

#### References

| Columns | Target | On delete |
|---|---|---|
| `spirometry_result_id` | [`spirometry_result`](/docs/tables/spirometry_result) | cascade |
| `device_id` | [`device`](/docs/tables/device) | no action |

#### Indexes

- `spirometry_result_device_device_id_idx` on `device_id`

### `spirometry_result_predicted_results_source`

Child table — one row per repetition, deleted with its parent.

| Column | Type | Null | Description | Source |
|---|---|---|---|---|
| `id` | `uuid primary key` | no | Primary key. | — |
| `spirometry_result_id` | `uuid` → [`spirometry_result`](/docs/tables/spirometry_result) | no | — | — |
| `position` | `integer` | no | Order of this row within its parent, from zero. | — |
| `knowledge_base_reference_id` | `uuid` | no | Predicted results source | `/protocol[at0029]/items[at0185]` |

#### Unique

- `spirometry_result_id, position`
- `spirometry_result_id, knowledge_base_reference_id`

#### References

| Columns | Target | On delete |
|---|---|---|
| `spirometry_result_id` | [`spirometry_result`](/docs/tables/spirometry_result) | cascade |
| `knowledge_base_reference_id` | [`knowledge_base_reference`](/docs/tables/knowledge_base_reference) | no action |

#### Indexes

- `spirometry_result_predicted_results_source_knowledge_bas_130a06` on `knowledge_base_reference_id`

## Value sets

| Value set | Codes |
|---|---|
| `org.openehr::openEHR-EHR-OBSERVATION.spirometry_result.v2/challenge_reversibility` | 3 |
| `org.openehr::openEHR-EHR-OBSERVATION.spirometry_result.v2/position` | 4 |
| `org.openehr::openEHR-EHR-OBSERVATION.spirometry_result.v2/type_of_measurement` | 2 |