Larger Nasal Intubation Tube Diameters Significantly Increase Patient Discomfort
Increasing the diameter of nasal intubation tubes directly correlates with higher reported pain scores during awake procedures.
Anaesthesia · 2003
Key Findings
- 01Topical anaesthesia using an atomiser resulted in incomplete analgesia for insertion of nasopharyngeal airways.
- 02Larger diameter tubes resulted in higher pain scores.
- 03There was no significant difference in pain scores between the two tested anaesthetic drugs.
Application
Design takeaway
When designing or selecting medical devices for nasal intubation, prioritize the smallest effective diameter to minimize patient discomfort.
How to apply
When designing or specifying medical tubes for insertion into sensitive anatomical passages, conduct user testing to correlate physical dimensions with perceived discomfort and physiological stress.
Project actions
- 01Consider how the physical size of a product impacts the user's physical sensations.
- 02Investigate different material properties or surface treatments that could improve comfort during insertion or use.
Method & Evidence
Variables
Strengths & Limitations
Strengths
- +Randomized cross-over design allows for within-subject comparison, reducing variability.
- +Direct measurement of pain scores provides quantitative data.
Limitations
The study focused on a specific medical context; results may not directly translate to non-medical applications.
Reliability & validity
The randomized cross-over design enhances internal validity by controlling for individual differences. Reliability would depend on the consistency of pain reporting and the precision of the pain scale used.
Think critically
Given that topical anaesthesia was incomplete, what other design interventions could mitigate pain during nasal intubation, beyond just tube diameter?
Design Principles
"Minimize physical invasiveness through optimized form and dimension to enhance user (patient) comfort and reduce adverse physiological responses."
This finding is critical for medical device design and procedural protocols. Understanding the direct impact of physical dimensions on patient experience allows for informed decisions in material selection, device sizing, and the development of less invasive alternatives.
What This Means for Your Design
Using bigger tubes for nose procedures hurts more, and the numbing spray doesn't always work perfectly.
How to use in your project
- 1.Use this research to justify the selection of smaller components or to inform the design of new components that minimize physical strain or discomfort for the user.
Add to My Project
Quick Cite
(2003). Pain during awake nasal intubation after topical cocaine or phenylephrine/lidocaine spray*. Anaesthesia. https://doi.org/10.1046/j.1365-2044.2003.03264.x Retrieved from https://designdex.org/study/768e89ee-1f73-40e5-b12b-41034a4aced6/larger-nasal-intubation-tube-diameters-significantly-increase-patient-discomfort
Paragraph starter
The study by Cara, Norris, and Neale (2003) demonstrated a direct correlation between the diameter of nasal intubation tubes and increased patient pain scores, indicating that larger dimensions lead to greater discomfort. This underscores the importance of considering physical size as a critical factor in minimizing user discomfort in design projects, particularly those involving insertion into sensitive anatomical areas.
Source
Anaesthesia
Pain during awake nasal intubation after topical cocaine or phenylephrine/lidocaine spray*
journal · 2003
View sourceQuestions about this research
- What does the research say about larger nasal intubation tube diameters significantly increase patient discomfort?
- When designing or selecting medical devices for nasal intubation, prioritize the smallest effective diameter to minimize patient discomfort. Evidence: Anaesthesia (2003).
- Why does "Larger Nasal Intubation Tube Diameters Significantly Increase Patient Discomfort" matter for design?
- This finding is critical for medical device design and procedural protocols. Understanding the direct impact of physical dimensions on patient experience allows for informed decisions in material selection, device sizing, and the development of less invasive alternatives.
- How can designers apply this research?
- When designing or selecting medical devices for nasal intubation, prioritize the smallest effective diameter to minimize patient discomfort.
- What were the main findings?
- Topical anaesthesia using an atomiser resulted in incomplete analgesia for insertion of nasopharyngeal airways.. Larger diameter tubes resulted in higher pain scores.. There was no significant difference in pain scores between the two tested anaesthetic drugs.
- What research method was used?
- Randomized cross-over study with 25 participants.
- How strong is the evidence?
- Evidence strength is rated Strong effect, based on a 2003 journal from Anaesthesia.
- What should I do differently in my next project?
- When designing or specifying medical tubes for insertion into sensitive anatomical passages, conduct user testing to correlate physical dimensions with perceived discomfort and physiological stress.
- What are the limitations?
- The study was conducted on volunteers, and the effectiveness of anaesthesia was incomplete even with topical application.
- Is there evidence that nasal intubation affects design outcomes?
- The study found that current topical anaesthetic methods for nasal intubation are not fully effective and that using larger diameter tubes significantly increases patient pain, with no difference observed between the two tested anaesthetic sprays. This finding is critical for medical device design and procedural protoc Source: Anaesthesia (2003).
- Where does this patient discomfort research apply?
- Medical procedures, specifically awake nasal intubation. It sits within human factors research on designdex.org.
Related research topics
nasal intubation design research · evidence on nasal intubation · does nasal intubation improve design outcomes · patient discomfort studies for designers · nasal intubation and patient discomfort findings · human factors research evidence