Related Experiment Video
Updated: Jan 23, 2026

High-speed Video Microscopy Analysis for First-line Diagnosis of Primary Ciliary Dyskinesia
Published on: January 19, 2022
Cost-effectiveness analysis of three algorithms for diagnosing primary ciliary dyskinesia: a simulation study
Panayiotis Kouis1,2,3, Stefania I Papatheodorou4,5, Nicos Middleton6
1Respiratory Physiology Laboratory, Medical School, University of Cyprus, Nicosia, Cyprus. kouis.panayiotis@ucy.ac.cy.
Diagnosing Primary Ciliary Dyskinesia (PCD) is more effective using a parallel testing approach with nasal Nitric Oxide (nNO), High-Speed Video Microscopy (HSVM), and Transmission Electron Microscopy (TEM). This combined method identifies more patients cost-effectively compared to sequential testing strategies.
Area of Science:
- Medical Diagnostics
- Pulmonology
- Genetics
Background:
- Primary Ciliary Dyskinesia (PCD) diagnosis involves multiple tests like nasal Nitric Oxide (nNO), High-Speed Video Microscopy (HSVM), and Transmission Electron Microscopy (TEM).
- Current diagnostic strategies lack universal agreement on sequential versus parallel testing, leading to variability in PCD diagnosis.
Purpose of the Study:
- To evaluate the cost-effectiveness (CE) and incremental cost-effectiveness (ICE) of three different diagnostic algorithms for Primary Ciliary Dyskinesia.
- To compare sequential versus parallel testing combinations for PCD diagnosis.
Main Methods:
- A probabilistic decision analysis model simulated 1000 hypothetical referrals (320 expected PCD patients).
- Three diagnostic algorithms were assessed: nNO+TEM (sequential), nNO+HSVM (sequential), and nNO/HSVM (parallel) with confirmatory TEM for conflicting results.
- Monte Carlo simulations estimated patient identification rates, CE, and ICE ratios.
Main Results:
- The parallel nNO/HSVM+TEM algorithm identified the most PCD patients (313/320), outperforming sequential nNO+HSVM (274/320) and nNO+TEM (198/320).
- The nNO/HSVM+TEM algorithm had the highest mean annual cost (€209K), but the nNO+HSVM algorithm was found to be more cost-effective than nNO+TEM.
- The ICE ratio for the nNO/HSVM+TEM algorithm was €2.1K per additional PCD patient identified.
Conclusions:
- Parallel testing algorithms, specifically nNO/HSVM+TEM, are more effective for diagnosing PCD than sequential approaches.
- These findings support the development of evidence-based guidelines for PCD diagnostic testing.
- Further research on PCD-related quality of life and costs is recommended for guideline implementation.
More Related Videos
05:52Handwriting Analysis Indicates Spontaneous Dyskinesias in Neuroleptic Naïve Adolescents at High Risk for Psychosis
Published on: November 21, 2013
09:03Nasal Brushing Sampling and Processing Using Digital High Speed Ciliary Videomicroscopy – Adaptation for the COVID-19 Pandemic
Published on: November 7, 2020
Related Concept Videos
Mechanism of Ciliary Motion
The cilia are made up of microtubules in a 9+2 arrangement, with nine microtubule doublet ring bundles, surrounding a pair of central singlet microtubule bundles. The doublet microtubule bundles are...
Diagnosing Acidosis and Alkalosis
First, the pH level is assessed to determine whether the blood pH is normal (7.35–7.45), low (acidosis), or high (alkalosis).
Next, the PCO2 and...
Trial and Error and Algorithm
Buffer Effectiveness
The buffer capacity is the amount of acid or base that can be added to a given volume...
Framing Effects
Mechanistic Models: Compartment Models in Algorithms for Numerical Problem Solving
In individual population analyses, different algorithms are employed, such as Cauchy's method, which uses a...