Tympanogram Types and Graph Generator with Interpretation: Have you ever wondered why your patient’s ear pressure readings look so different from one another? Imagine you’re running a clinic, and you see a flat line for one patient and a sharp peak for another. That moment of confusion—well, you’re not alone. According to the American Speech-Language-Hearing Association (ASHA), proper tympanometry interpretation can increase diagnostic accuracy by up to 30% (ASHA, 2020). But here’s the good news: once you get a handle on Tympanogram Types and learn how to use a Tympanogram Graph Generator, you’ll breeze through middle ear assessments like a pro. In this post, we’re gonna walk you through everything—definitions, tool walkthrough, data ranges, clinical pearls, and even some FAQs for those burning questions. Let’s dive in.
What is a Tympanogram?
A tympanogram is a plot of middle ear compliance (or static acoustic admittance) on the vertical axis against middle ear pressure on the horizontal axis. In lay terms, it’s a graph that shows how well your eardrum and ossicles move as you change ambient pressure. It’s sometimes called impedance audiometry because it measures the impedance (resistance) of the middle ear system.
Purpose:
- Detect middle ear effusion (fluid)
- Screen for eustachian tube dysfunction
- Identify ossicular chain abnormalities
- Monitor otosclerosis progression
It’s quick (under a minute per ear), noninvasive, and yields objective data—even kids tolerate it fairly well with distraction toys.
Tympanogram Types and Graph Generator
Our Tympanogram Types Generator and Tympanogram Graph Generator tool lets you plug in measured values—Static Acoustic Admittance (Compliance), Equivalent Ear Canal Volume, Peak Pressure, and Gradient—and instantly plot a smooth, labelled graph. You’ll see which ear you’re testing, overlay right vs. left if needed, and get visual cues for interpreting Type A, B, C, etc. It saves time, reduces manual plotting errors, and standardizes reporting.
How to Generate Tympanogram Graph and Types
Step-by-Step Guide to use Tympanogram Types and Graph
We’ve designed the interface to be, well, a breeze. Please refer to the attachment screenshot as you follow these steps.
Step 1: Input Measurement Values
- Static Acoustic Admittance (Compliance) in ml
- Equivalent Ear Canal Volume in ml
- Peak Pressure in daPa
- Gradient
Tip: Always calibrate your tympanometer first, and ensure the probe tip seals the ear canal completely. A leak throws off the Equivalent Ear Canal Volume reading.
Step 2: Select Ear
Click “Right Ear” or “Left Ear” tab. The active tab highlights in blue, so you won’t mix up sides.
Step 3: Generate Graph
Hit the “Generate Tympanogram” button. In less than a second, the tool plots your compliance curve (red for right, blue for left). The area under the curve can be shaded for easy visualization.
Step 4: Save or Export Results
Click the download icon or right‑click the graph to save as PNG. You can embed it directly into your patient report. No more fiddling with Excel or photo editors.
Tympanogram Interpretation
Normal Range Values
- Static Acoustic Admittance: 0.35 – 1.75 ml
- Ear Canal Volume: 0.2 to 2.5 ml
- Peak Pressure: -100 daPa to +100 daPa
- Gradient: 0.2 or more
Type A
Distinctive peak near atmospheric pressure, typical of normal patients and otosclerosis.
- Compliance: Normal
- Ear Canal Volume: Normal
- Peak Pressure: Normal
- Gradient: Normal
Type As
Type A with shallow peak, associated with otosclerosis or otitis media.
- • Compliance: Less than 0.3 ml
- • Ear Canal Volume: Normal
- • Peak Pressure: Normal
- • Gradient: Normal or less than 0.2
Type D
Not shown in the figure are tympanograms with notched peaks, which were classified as type D if the notch was narrow. These are rare occurrences when using 226 Hz (220 Hz) probe tones.
Type D was associated with hypermobile or scarred (but otherwise normal) eardrums.
Type B
Flat across pressure range, characteristic of middle ear fluid, cholesteatoma, perforations, or obstructions.
- Compliance: Normal to low (OM) or Flat (Perforation)
- Ear Canal Volume: High (Perforation) or Normal (OM)
- Peak Pressure: No peak
- Gradient: Wide (OM) or Absent (Perforation)
Type Ad
Type A with high peak, found in scarred/flaccid eardrums or ossicular interruptions.
- • Compliance: Higher than 1.75 ml
- • Ear Canal Volume: Normal
- • Peak Pressure: Normal
- • Gradient: Narrow (less than 0.2)
Type C
Negative pressure peaks beyond –100 daPa, associated with Eustachian tube disorders or middle ear fluid.
- Compliance: Normal
- Ear Canal Volume: Normal
- Peak Pressure: Below -100 daPa
- Gradient: Normal
Type Add
Type A with off-scale peak, found in ears with ossicular discontinuities.
- • Compliance: Off-scale
- • Ear Canal Volume: Normal
- • Peak Pressure: Normal
- • Gradient: Absent
Type E
Not shown in the figure are tympanograms with notched peaks, which were classified as type E if it was wide. These are rare occurrences when using 226 Hz (220 Hz) probe tones.
Type D was found in cases of ossicular disruption.
Frequently Asked Questions
How does the Tympanogram Types Generator work for beginners?
You simply enter four values, pick the ear, and click “Generate.” The tool plots the pressure‑compliance curve and shades the area for visual ease. No Excel needed!
Can I use the Tympanogram Graph Generator for children under 5?
Sure! Just ensure you use an appropriately sized probe tip and engage the child with toys. The graph generator handles any valid measurements.
Why is my peak pressure off the chart?
That could be a Type Add tympanogram or a calibration issue. Check the probe seal, recalibrate, and retest.
What if my Equivalent Ear Canal Volume is abnormally high?
In adults, that suggests a perforation. In children, cerumen or a poorly sealed probe tip can artifactually raise the volume reading. Reposition the tip and repeat.
How do I interpret notched tympanograms (Types D and E)?
Notches require a high-frequency probe tone (678 Hz or 1000 Hz) to confirm. They suggest hypermobility or ossicular discontinuities—consult an ENT.
Can I export data for electronic health records (EHR)?
Yes, you can download the graph as PNG and manually upload to your EHR system or embed it in PDF reports.
What our Users are Saying
I use this calculator for precise tympanometry analysis. Its intuitive interface and graphs boost my diagnostic confidence, improving patient satisfaction.
This Tympanogram Generator saves me hours plotting graphs manually. Its accuracy and visual clarity impress clinicians and patients alike.
I appreciate the normative ranges and pressure markers. They guide my interpretation and reduce calculations, ensuring accuracy in every patient evaluation.
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