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| Ciliary
Dyskinesia Test, Nasal, Trachea, Bronchial Brushings |
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Respiratory Ciliated Cell Motility Disorders |
Using swabs or brushes of respiratory mucosal sites,
one can perform wet-prep light microscopic exams to observe
presence or absence of ciliary activity and the quality of the
activity (is it rhythmic and coordinated?). The specimen is submitted
within a container with a small amount of normal saline such as
to act as a humidity chamber. After the diagnostic slide air dries
out, it can be Wright's stained for a permanent view of the cilia.
The goal should be to perform the exam in less than 30 minutes
of the specimen acquisition (although I have seen good activity
in an autopsy specimen 1-2 hours after death). [our first request
on a respiratory specimen was in 2003...LMC-03-7751]
This group of disorders is thought to be inherited;
about 1 in 70 is a carrier. Collectively, these cases are called "primary
ciliary dyskinesia" (PCD). EM shows the structural abnormalities
in PCD cases.
PCD cases present to doctors with manifestations
of brochiectasis, chronic sinusitis, and male infertility (immotile
or dysmotile sperm). About 30% have nasal polyposis; male infertility
is the rule; chronic chronic cough with purulent sputum due to
an ineffective respiratory muco-ciliary escalator.
True Kartagener's Syndrome (PCD plus situs inversus),
with a prevelance of 1 in 32000 births, accounts for about half
of the PCD cases (PCD about 1 in 16000 births).
(posted 22 November 2003) |
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