Related Experiment Video
Updated: Aug 26, 2025

Collection, Expansion, and Differentiation of Primary Human Nasal Epithelial Cell Models for Quantification of Cilia Beat Frequency
Published on: November 10, 2021
In vitro measurement of ciliary beat frequency in 92 children with recurrent respiratory tract problems
A Drake-Lee1,2, A Green2, A-L McDermott1
1Department of Otolaryngology, Birmingham Children's Hospital, UK.
Insights
Measuring ciliary beat frequency aids in diagnosing chronic respiratory issues in children. This diagnostic tool helps identify conditions like asthma and bronchiectasis, improving patient outcomes.
Area of Science:
- Pediatric Pulmonology
- Respiratory Physiology
- Diagnostic Medicine
Background:
- Chronic or recurrent mucoid respiratory tract symptoms present diagnostic challenges.
- Accurate diagnosis is crucial for effective management of pediatric respiratory conditions.
Purpose of the Study:
- To evaluate the utility of ciliary beat frequency measurement in diagnosing chronic respiratory symptoms in children.
- To assess the relationship between ciliary function and specific respiratory conditions.
Main Methods:
- Ninety-two children with chronic respiratory symptoms were categorized into four groups: refractory asthma, bronchiectasis, dextrocardia, and recurrent respiratory tract infections.
- Ciliary beat frequency was measured using photometric analysis under general anesthesia.
- The impact of temperature on ciliary beat frequency was assessed.
Main Results:
- Twenty-six children exhibited absent ciliary beating.
- A statistically significant difference in ciliary beat frequency was observed at different temperatures (p = 0.0003).
- Nasal polyps were identified in one child with normal ciliary beat frequency.
Conclusions:
- Ciliary beat frequency measurement is a valuable component in the diagnostic workup for children with persistent or recurrent respiratory tract infections.
- Abnormal ciliary function may be indicative of underlying respiratory pathology.
Background:
Chronic or recurrent mucoid respiratory tract symptoms may be difficult to diagnose.
Method:
Ninety-two children with chronic respiratory symptoms were divided into 4 groups: 18 children with refractory asthma, 10 with bronchiectasis without dextrocardia, 18 with dextrocardia and 46 with recurrent respiratory tract infections. Except for five neonates, cytology samples were taken under general anaesthesia. Ciliary beat frequency was measured photometrically and analysed by in-house computer software.
Results:
Nasal polyps were found in one child with normal ciliary beat frequency. Twenty-six children had no beating cilia (male to female ratio, 15:11). The effect of increasing temperature on the ciliary beat frequency of the remaining 66 patients was evaluated (42 patients, more than 30°C, median, 8.3 Hz; 24 patients, 30-37°C, median, 11.8 Hz; p = 0.0003).
Conclusion:
The measurement of ciliary beat frequency is part of the diagnostic work up of patients with persistent or recurrent respiratory tract infections.
More Related Videos
Related Concept Videos
Assessment of Ventilation I: Respiratory Rate
A Ventilation assessment is critical for monitoring a patient's health status. Respiration, one of the most accessible vital signs, provides insights into the function of numerous body systems and can indicate serious health issues, such as brainstem injuries from head trauma.
Critical Guidelines for Assessing Ventilation:
Special considerations while measuring oxygen saturation
Ensuring accuracy in vital sign recordings while prioritizing patient comfort and minimizing anxiety is...
Assessment of Ventilation II: Respiratory Depth and Rhythm
Respiratory depth measures the volume of air inhaled or exhaled during a breath. It can vary from shallow to deep and typically remains consistent when a person is at rest or asleep. Occasionally, individuals will automatically inhale deeply, known as sighing, which inflates the lungs with more air than normal breathing.
To assess respiratory depth, observe the degree of chest excursion or movement:
Chronic Obstructive Pulmonary Disease-IV: Assessement and Diagnostic Studies
Medical History

