| ARCHETYPE ID | openEHR-EHR-OBSERVATION.tympanogram.v1 |
|---|---|
| Concept | Tympanogram Result |
| Description | Record of measurements of movement at the tympanic membrane in response to changes in air pressure in the ear canal and their clinical interpretation as an indication of middle ear function. |
| Use | Use to record movement of the tympanic membrane in response to various levels of air pressure, for a single ear at a time. Use to record the interpretation all measurements to infer middle ear function for each ear, plus an overall interpretation (or tympanometric diagnosis). All of the data elements are recorded using a single method or protocol. If, during the test, any of the protocol parameters need to be modified, then the subsequent part of the test will need to be recorded within a separate instance of the test data, using the updated protocol parameters. |
| Misuse | Not to be used to record other hearing tests. Use other archetypes as appropriate, for example OBSERVATION.audiogram. |
| Purpose | To record measurements of movement at the tympanic membrane in response to changes in air pressure in the ear canal and to infer middle ear function. |
| References | |
| Copyright | © openEHR Foundation |
| Authors | Author name: |
| Other Details Language | Author name: |
| Other Details (Language Independent) |
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| Keywords | tympanogram, tympanometer, admittance, pressure, compliance, immittance, static, tympanometry |
| Lifecycle | CommitteeDraft |
| Language used | en |
| Citeable Identifier | 1013.1.73 |
| events | |
| Baseline | Baseline: * |
| Post Valsalva | Post Valsalva: Measurments are recorded after the patient does a valsalva manoevre |
| Post Toynbee | Post Toynbee: Measurments are recorded after the patient does a toynbee manouvre |
| Any event | Any event: * |
| protocol | |
| Pre-test Calibration Cavity Size | Pre-test Calibration Cavity Size: A cavity with a known volume used to check the calibration of the tympanometer Property: Volume Units: 0.5..5.0 cc Limit decimal places: 1 Assumed value: 1.0cc Limit decimal places: 1 |
| Probe Tone Frequency | Probe Tone Frequency: The frequency of the tone emitted by the probe inserted into the test ear Property: Frequency Units: Hz Assumed value: 226.0Hz Limit decimal places: -1 |
| Direction of Pressure Change | Direction of Pressure Change: The change of pressure in the ear canal which can be either ascending or descending
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| Rate of Pressure Change | Rate of Pressure Change: The rate of change of pressure used in tympanometry Property: Flow rate, volume Units: ml/s |
| Admittance | Admittance: Acoustic admittance is the reciprocal of impedance
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| Pressure Range | Pressure Range: * |
| Start Pressure | Start Pressure: * |
| Stop Pressure | Stop Pressure: * Property: Pressure Units:
Assumed value: -200.0mm[H20] Limit decimal places: -1 |
| Tympanometer | Tympanometer: A device that performs tympanometry Include: openEHR-EHR-CLUSTER.device.v1 and specialisations |
| data | |
| Test | Test: The tympanogram test result which can be recorded per ear . |
| Test Ear | Test Ear: Identification of the ear being tested.
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| Measurements | Measurements: Values of middle ear function |
| Pressure vs Compliance Measurement | Pressure vs Compliance Measurement: The measured pressure/compliance pair. Multiple instances of this measurement will form the basis for the graphical display of the tympanogram. |
| Peak Pressure | Peak Pressure: Peak pressure (also called middle ear pressure or MEP) is the ear canal pressure at which the peak of the tympanogram occurs (Margolis & Hunter, 2000). Also known as Middle Ear Pressure (MEP). It is plotted on the horizontal axis on a tympanogram. Property: Pressure Units:
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| Static Compliance | Static Compliance: Static compliance (SC) “is the greatest amount of acoustic energy absorbed by the middle ear system (the vertical peak of the tympanic tracing)” (Onusko, 2004, p. 1716). Also known as 'Static Admittance'. It is plotted on the verical axis of a tympanogram. Property: Volume Units:
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| Ear Canal Volume | Ear Canal Volume: An estimate of the volume of air between the probe tip and the tympanic membrane if the tympanic membrane is intact, or the volume of the ear canal and the middle ear space if the tympanic membrane is perforated. (Fowler & Shanks, 2002, p. 180). Property: Volume Units:
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| Tympanometric Width | Tympanometric Width: The pressure interval corresponding to a 50% reduction in the peak static admittance. This value is typically derived from the Tympanogram curve. Property: Pressure Units: 0.0..400.0 daPa |
| Tympanometric Gradient | Tympanometric Gradient: Tympanometric gradient is an objective measure that describes the steepness of the slope of the tympanogram near the peak (Fowler & Shanks, 2002, p.182). This value is typically derived from the Tympanogram curve. Property: Electrical conductance Units: mmho |
| No Test Result | No Test Result: No test result is available for the test ear. Record as True if the clinician was unable to record a result for the test ear. Allowed values: {true} |
| Reason for No Test Result | Reason for No Test Result: Reason why no result is available for the test ear. For example, patient was not co-operative; patient was not capable; ran out of time; no seal; presence of tympanic membrane perforation, impacted wax or discharge. |
| Tympanogram Type | Tympanogram Type: Classification of tympanogram curve using Jerger categories.
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| Clinical Interpretation | Clinical Interpretation: Clinical interpretation of all measurements for the test ear. |
| Overall Interpretation | Overall Interpretation: Overall clinical interpretation of the measurements and related findings using an tympanometer. Coding with a terminology is preferred, where possible. This data element is effectively an audiological diagnosis. |
| Test Result Image | Test Result Image: Digital representation of the entire result. image/cgm, image/gif, image/png, image/tiff, image/jpeg |
| Comment | Comment: Additional narrative about the test results and intepretation not captured in other fields. |
| Other contributors | |
| Translators |