Final Presentation - Senior Design Course Project
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Transcript of Final Presentation - Senior Design Course Project
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Dynamic Adult Airway Management Trainer (DAAMT)Team 10Ara Bablouzian, Aakash Gupta, Tushar Kesavadas
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Endotracheal Intubation
http://airwayeducation.homestead.com/intubation.html
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Previous Team - Overall Realism
skin tongue forces for jaw-opening
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Inflamed Tongues (Angioedema)
Bramante, R. M., and M. Rand. "Angioedema." New England Journal of Medicine 365.2 (2011). Print.Cohn, J.R., McDaniel, C., Richards, N., Au, C., Baram, M., Airway Obstruction Secondary to Angiotensin Converting Enzyme Inhibitor (ACEI) Induced Angioedema. Thomas Jefferson University and Hospitals, 2012.
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Tongue Simulator Needs
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Metrics and Specifications# Metric Units Marginal
Value Ideal Value
1 User Testing - Behavior of Tongues Likert Scale Realistic (4) Very Realistic (5)
2 User Testing - Shape and Size Likert Scale Realistic (4) Very Realistic (5)
3 User Testing - Repeated Intubation Before Failure
Number of Intubations 100 200
4 User Testing - Preparation Time Seconds 300 60
5 Max Change in Length mm 5 10
6 Max Change in Width mm 5 10
7 Max Change in Height mm 5 11
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Final Design: Overall
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1.Model normal and inflamed tongues
a.size, shape, feel
2.Deform realistically
3.Withstand intubation forces
Final Design Criteria - Tongues
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Final Design - Tongues
Length Width
Height
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Normal vs. Inflamed
Tongue Composition
Shore 00
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1.Correctly position tonguea.Touch epiglottis
2.Attach to Silicone3.Withstand forces
Final Design Criteria - Attachment
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Attachment Design: Tongue Plate
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Attachment Design: Jaw Plate
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Attachment Design: Overall
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User Testing 1 - Tongue Composition
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User Testing 1 - Tongue Composition
height ratio =
X--h
Constant compositionVariable composition
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User Testing 1 - Tongue Composition
height ratio
=
X--h
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User Testing 1 - Tongue Composition
Constant compositionVariable composition
height ratio =X--h
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User Testing 1 - Tongue Composition
Constant compositionVariable composition
X
XXX = Selected Composition
height ratio =X--h
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User Testing 2 - Laerdal ComparisonER Doctors (n = 6)
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User Testing 2 - Laerdal ComparisonMovement of the Tongue
Paired Difference = (Score for our model) - (Score for Laerdal)
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User Testing 2 - Laerdal ComparisonCompressibility of the Tongue
Paired Difference = (Score for our model) - (Score for Laerdal)
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User Testing 2 - Laerdal ComparisonOverall Feel of Intubation
Paired Difference = (Score for our model) - (Score for Laerdal)
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User Testing 3 - Intubation DifficultyResidents, ER Doctors, Nurses (n = 18)
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User Testing 3 - Intubation Difficulty
● Residents = 11○ Emergency Medicine○ Anesthesia
● CRNAs = 3
● Practitioners = 4○ Emergency Medicine○ General Surgery
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User Testing 3 - Intubation Difficulty
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User Testing 3 - Intubation Difficulty
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User Testing 3 - Intubation Difficulty
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User Testing 3 - Intubation Difficulty
● Repeated Measures ANOVA (p < 0.001)○ 4 groups○ Paired analysis
● Post-Hoc Bonferroni Multiple Comparisons○ alpha = 0.05/6 = 0.0083
***
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User Testing 4 - Time to InterchangeStudents and shop guys (n = 5)
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User Testing 4 - Time to Interchange
● Normal Tongue○ Mean = 55.0 seconds○ SD = 7.38 seconds
● Severely Inflamed Tongue○ Mean = 79.8 seconds○ SD = 22.6 seconds
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Metrics and Specifications# Metric Units Marginal
Value Ideal Value Final Value
1 User Testing - Behavior of Tongues Likert Scale Realistic (4) Very Realistic (5)
3.5, 3, 4, 4
2 User Testing - Shape and Size Likert Scale Realistic (4) Very Realistic (5)
3.5, 4, 4, 4
3 User Testing - Repeated Intubation Before Failure
Number of Intubations 100 200 80
4 User Testing - Preparation Time Seconds 300 60 55, 80
5 Max Change in Length mm 5 10 10
6 Max Change in Width mm 5 10 10
7 Max Change in Height mm 5 11 11
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Future WorksCover entire face with continuous skin
Create obstructions in the airway itself
Standardize frenulum and tongue positioning
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ANY QUESTIONS?Special thanks to:
Professor Gatchell, Dr. Jared Novack, Joe Luciani,Steven Houg, and NorthShore Sim Labs
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Technical Drawings - Tongue Plate
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Technical Drawings - Jaw Plate
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Tongue Sizes - ?????????
Inflamed
Healthy
Top ViewSide View
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Final Tongue Dimensions
Tongue Sizes Length (mm) Width (mm) Height (mm)
Normal 83.1 44 23
Minimally Inflamed
83.1 44 28
Moderately Inflamed
88.1 49.5 30.5
Severely Inflamed
93.1 55 33
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1.Maintain realistic forces
2.Accurate resting gape
3.Acommodate for interchangeable tongues
Final Design Criterion - Jaw