Related Experiment Video
Updated: May 12, 2026

High-speed Video Microscopy Analysis for First-line Diagnosis of Primary Ciliary Dyskinesia
Published on: January 19, 2022
Early Life Disease Burden and Outcomes in Children Diagnosed With Primary Ciliary Dyskinesia in Infancy
Madhan Kumar1, Dvir Gatt2,3, Zofia Zysman-Colman1
1Montreal Children's Hospital, McGill University Health Centre, Montreal, Quebec, Canada.
Insights
Early diagnosis of primary ciliary dyskinesia (PCD) in infants is crucial. Despite early interventions like airway clearance, children face significant respiratory and hearing issues, highlighting the need for ongoing care and further research on therapies like inhaled hypertonic saline.
Area of Science:
- Pediatric Pulmonology
- Rare Genetic Disorders
- Clinical Outcomes Research
Background:
- Primary ciliary dyskinesia (PCD) is a rare genetic disorder causing chronic oto-sino-pulmonary disease from birth.
- Delayed diagnosis is common, leading to poorly understood early-life disease burdens.
Purpose of the Study:
- To analyze early disease burdens and long-term outcomes in infants diagnosed with PCD near birth.
- To evaluate the impact of early interventions and therapies on disease progression.
Main Methods:
- Retrospective analysis of disease burdens until age 2 and outcomes at ages 6-7 in infants diagnosed with PCD near birth.
- Data collected from two Canadian PCD centers.
Main Results:
- Thirty-five infants (median diagnostic age 34 days) were included; all received chest physiotherapy.
- By age 2, high rates of respiratory exacerbations (66% outpatient, 29% inpatient), ER visits (60%), and abnormal audiology (91%) were observed.
- Early inhaled hypertonic saline (IHS) use was associated with less Pseudomonas aeruginosa but more inpatient exacerbations, suggesting a complex effect.
Conclusions:
- Infants with PCD experience significant respiratory infections and clinical care burdens even with early diagnosis and treatment.
- A high risk of hearing loss necessitates universal screening and close follow-up.
- The role of inhaled hypertonic saline in early Pseudomonas acquisition and hospitalization requires further investigation through prospective studies.
Background:
Primary ciliary dyskinesia (PCD) is a genetically heterogeneous disorder causing chronic oto-sino-pulmonary disease from birth. Since diagnosis is often delayed into childhood or adulthood, early-life disease burdens remain poorly described.
Methods:
This retrospective study analyzed disease burdens until 2 years of age and outcomes at 6-7 years of age in children diagnosed with PCD near birth at two Canadian PCD centers.
Results:
Thirty-five infants (median diagnostic age 34 days) were included. All received daily chest physiotherapy, while 52% received daily inhaled hypertonic saline therapy (IHS) from diagnosis. By 2 years of age, 66% experienced outpatient respiratory exacerbations, 29% had inpatient respiratory exacerbations, 60% required emergency room visits for respiratory illness, and 14% had Pseudomonas aeruginosa in sputum cultures. Abnormal audiology occurred in 91% screened, and 49% required tympanostomy tubes. Despite early diagnosis and therapy, spirometry showed a trend towards obstruction (mean FEV₁/FVC ratio Z-score -1.43) by 7 years of age. Infants on daily IHS from birth (n = 18, mostly at one center) had significantly fewer Pseudomonas aeruginosa sputum isolates (0% vs. 29%, p = 0.02) but significantly increased inpatient respiratory exacerbations (44% vs. 12%, p = 0.04) compared to infants not on regular IHS (n = 17).
Conclusion:
Despite early diagnosis, ongoing respiratory surveillance, and regular airway clearance, infants with PCD develop frequent respiratory infections and have high clinical care burdens. Infants have markedly increased risk of hearing loss, warranting universal screening and close follow-up. Inhaled hypertonic saline may influence early Pseudomonas acquisition and hospitalization risk, warranting prospective study of this commonly prescribed therapy.
Related Concept Videos
Chronic Obstructive Pulmonary Disease I: Introduction
Chronic Obstructive Pulmonary Disease III: Chronic Bronchitis Features
Cystic Fibrosis: Pathogenesis
CF is primarily caused by a genetic mutation in a chromosome 7 gene coding for the cystic fibrosis transmembrane conductance regulator (CFTR) protein. The most common gene mutation leading to CF is the ΔF508 mutation, but...
Cystic Fibrosis: Management
Sinus disease and chronic sinusitis...
Chronic Obstructive Pulmonary Disease-I: Introduction
Chronic Obstructive Pulmonary Disease
Smoking is a primary risk factor for COPD, with over 80% of patients having a history of it. Patients typically experience progressive dyspnea or labored breathing, frequent coughing, and recurrent pulmonary infections. Many eventually succumb to respiratory failure, characterized by...

