Video Summary - DIA 01 - AULÃO AO VIVO

Main ideas / lessons from the video

The video is an “audiology immersion” live class aimed at helping students and professionals understand audiology more simply—especially how to read audiograms and how to classify hearing loss.
Two core themes repeat throughout:
1. Start from fundamentals (audiogram, symbology/colors, air vs. bone conduction).
2. Learn in an associative/simplified way so numbers and calculations feel less frightening and more logical.

Topics covered (in order)

What an audiogram is and how it represents hearing loss over time.
How to read frequencies (Hz) and intensity (dB) on the graph.
How to interpret audiogram symbology (colors, symbols, ear side, mirroring).
The types of hearing loss (normal, conductive, sensorineural, mixed) using rules based on air conduction vs. bone conduction and the air-bone “gap”.
How to determine the degree/severity of hearing loss using tonal averages (tritone or quadritone) and referenced classification tables.

Detailed methodology / step-by-step instructions presented

1) How the audiogram works (conceptual reading)

X-axis (horizontal): frequencies in Hz, typically shown from 125 Hz to 8000 Hz.
Y-axis (vertical): sound intensity level in dB (device-dependent range, commonly discussed from -10 to 120 dB).

The audiogram helps with:

Identification of hearing loss: quantify degree and determine type
Monitoring evolution: shows progression over time

Relationship emphasized:

The lower the thresholds (in dB), the more intense sound is needed for the patient to perceive it at that frequency.

2) How to identify symbols correctly (symbology rules)

Do not memorize blindly—understand what each marking means.

Core ear-color rule (starting point):

Red = right ear
Blue = left ear

Important mirroring rule:

When facing the patient, the chart may be mirrored relative to how the viewer at home sees it.
Learners must be careful so they don’t mark the wrong ear.

Audiogram “figure” idea used for learning:

Drawing/diagram associates colors + symbols + ear-side.
Emphasis that correct mirroring prevents opposite-ear markings.

3) What changes when masking occurs (conceptual)

When masking is applied:
- Audiogram symbology can change (e.g., different symbols)
- You may see two “figures” representing masked vs. unmasked thresholds

Key learning checkpoint:

Identify unmasked thresholds first, then determine what is masked.

4) How to classify the type of hearing loss (rule-based)

The classification method repeatedly relies on:

Comparing air conduction thresholds and bone conduction thresholds
Checking whether there is an air-bone gap (“GAP”) and its size
Analyzing frequency-by-frequency (not assuming the pattern is consistent across all frequencies)

A) Normal hearing range

Rule stated:
- Normal hearing thresholds between 0 and 25 dB
Warning about author/reference variation:
- Some studies/authors may define hearing loss starting at 20 dB
Additional concept:
- Check each tested frequency; hearing loss can occur at isolated frequencies even if most frequencies look normal.

B) Conductive hearing loss (air conduction reduced; bone conduction preserved)

Simple comparison taught:

Preserved bone conduction: roughly 0–15 dB
Reduced air conduction: > 25 dB (hearing loss criterion used in the lesson)

GAP presence and size:

GAP between air and bone conduction from ~15 to 60 dB (as taught in the class)

Interpretive meaning:

Sound is transmitted less efficiently through air conduction than bone conduction.

C) Sensorineural (sensorineural/neurosensory) hearing loss

Rule focus:

No air-bone gap (or minimal/reduced gap compared to conductive loss)

GAP thresholds described:

A gap larger than the taught conductive range (e.g., 15–60 dB) is not expected
The class describes the air-bone gap as reduced or absent, implying limits (spoken around ≤10 dB as a boundary)

Severity (“degree”) emphasis:

The lesson frames sensorineural hearing loss as the one where determining degree/severity is particularly central.

Physiological context (brief):

Associated with inner ear / nerve issues (with details said to come later).

D) Mixed hearing loss (both conductive + sensorineural components)

Rule:

Contains both:
- Conductive component (air conduction impairment)
- Sensorineural component (inner ear impairment)

GAP rules:

Mixed hearing loss may show a gap at some frequencies
Must verify frequency-by-frequency

Suggested support condition:

A mixed pattern is supported when you have a combination of air and bone changes, including a gap of ≥15 dB (as summarized in the note-sheet guidance)

Bottom-line decision approach:

If the pattern changes across frequency, don’t force one label—use the taught threshold logic per frequency.

5) How to determine the degree/severity (method + calculations)

A) When degree is calculated

Degree is emphasized as being determined mainly for sensorineural hearing loss.

B) Choose the averaging method and classification table

Two averaging approaches:

Tritone average (3 frequencies)
Quadritone average (4 frequencies)

Important rules:

Use the matching table for the averaging method you chose.
Severity cutoffs depend on the reference/standard used (older vs. newer charts are mentioned).
The clinician must cite the reference used in the audiological report.

C) Tritone average calculation (3-frequency method)

Frequencies used: 500 Hz, 1000 Hz, 2000 Hz

Steps:

Take air conduction thresholds at 500 + 1000 + 2000 Hz
Add them
Divide by 3
Use the mean in the tritone classification table

D) Quadritone average calculation (4-frequency method)

Frequencies used (as taught): 1000 Hz, 2000 Hz, 4000 Hz
- The example/context indicates a fourth frequency based on the method’s regional/teacher-based convention.

Steps:

Take air conduction thresholds across the quadritone set
Add
Divide by 4
Use the result in the quadritone classification table

E) Severity category cutoffs (as stated in the lesson for one table set)

Example ranges provided:

Normal hearing: ≥ 25 dB considered normal
26–40 dB: mild
41–55 dB: moderate
56–70 dB: moderately severe
71–90 dB: severe
> 91 dB: profound

Worked examples described:

Example 1 (tritone):
- 500 Hz = 50 dB, 1000 Hz = 60 dB, 2000 Hz = 60 dB
- Mean ≈ (50 + 60 + 60) / 3 = 56.6
- Categorized as moderately severe
Example 2 (quadritone):
- Example values include 500 Hz = 50 plus others (transcript mentions values like 1060/2070/4060)
- Mean ≈ 60
- Categorized as moderately severe

Conclusion of their worked case:

Bilateral sensorineural hearing loss, moderately severe.

Key concepts emphasized about learning/assessment

Many learners fear audiology due to:
- numbers and basic math, but the class argues it becomes manageable through logical clinical meaning.
Practical advice:
- Even if software can auto-generate parts of the audiogram:
  - students must still learn manual symbology and filling
  - professionals may need to troubleshoot or complete masking/interpretation manually.
Reference/reporting:
- Because normal ranges and severity charts can vary by author/region:
  - the clinician must cite the reference used in the audiological report.

Speakers / sources featured (identified)

Larissa Suzarte (speech-language pathologist / audiology educator; representative of Fon Aiá)
Mateus Lima (speech-language pathologist; co-presenter)
Fon Aiá (institution mentioned as where Larissa has been helping students/professionals since 2017)
funodiario.com.br (website mentioned for training/ebook/course promotion)
UMS 2020 (referenced as a newer severity classification standard/chart)
Earlier reference from 1970 (referenced as an older severity classification standard/chart)
Mentions of authors/studies and regional practices as sources of differing cutoff values (no specific names provided)

DIA 01 - AULÃO AO VIVO - APRENDA A AUDIOLOGIA

Key takeaways