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Cytologic study of food microaspiration in recurrent obstructive bronchopathy
M Chiappero de Duran1, R Assayas
1Departamento de Alergia, Hospital de Niños Juan C. Navarro, San Juan, Argentina.
Abstract:
Sixty-four cases of infants ranging from 4 to 24 months of age (fed on milk) who suffered from Recurrent Obstructive Bronchopathy and a group of 10 healthy children were studied during 6 months (from May to October, 1984) in order to evaluate the incidence of the microaspiration phenomenon. This was done by means of a quick, easy and very cheap cytological method which etiologically diagnoses the microaspiration through fat elements phagocitized by the alveolar macrophages. They were evident in two different ways: 1) a new method of stained cellulae of a better morphological fidelity. 2) a larger quantity of exploratory smears from each patient which allowed an easier elimination of positive falses and a better individuation of negative falses. The data obtained by the technic were statistically processed using the significance of Chi or Khy square test, so as to make an exploratory-descriptive study of the method through the comparison of the averages obtained from the samples, smears and macrophages.
Insights
A new cytological method effectively diagnoses microaspiration in infants with recurrent obstructive bronchopathy by identifying fat elements in alveolar macrophages. This cost-effective technique improves diagnostic accuracy for this common infant respiratory condition.
Area of Science:
- Pediatrics
- Pulmonology
- Cytology
Background:
- Recurrent Obstructive Bronchopathy (ROB) is a significant concern in infants.
- Microaspiration is a suspected etiological factor in ROB.
- Accurate diagnosis of microaspiration is crucial for effective treatment.
Purpose of the Study:
- To evaluate the incidence of microaspiration in infants with ROB.
- To introduce and validate a novel, cost-effective cytological method for diagnosing microaspiration.
- To assess the diagnostic performance of the new method.
Main Methods:
- Studied 64 infants (4-24 months) with ROB and 10 healthy controls.
- Employed a rapid, inexpensive cytological technique to detect fat phagocytosed by alveolar macrophages.
- Utilized improved staining for better cell morphology and increased sample smears to enhance accuracy.
Main Results:
- The cytological method successfully identified microaspiration through characteristic findings in alveolar macrophages.
- Enhanced sample processing improved the differentiation between true positives and negatives.
- Statistical analysis (Chi-square test) supported the method's efficacy.
Conclusions:
- The developed cytological method is a viable, economical tool for diagnosing microaspiration in infants.
- This diagnostic approach aids in understanding the etiology of Recurrent Obstructive Bronchopathy.
- The technique offers improved accuracy and ease of use for clinicians.