Related Experiment Videos
[Regulation of nasal resistance in children]
Insights
Nasal cycles, a regulatory mechanism of nasal airflow, were found in 79% of older children and 50% of younger children aged 3-10. This study confirms nasal cycles are regulated in children.
Area of Science:
- Pediatric Otolaryngology
- Respiratory Physiology
Context:
- Nasal cycles, characterized by alternating congestion and decongestion of nasal tissues, are well-documented in adults.
- Previous research has yielded conflicting results regarding the presence and definition of nasal cycles in children.
- Active anterior rhinomanometry is a validated method for assessing nasal airflow dynamics.
Purpose:
- To investigate the presence and characteristics of nasal cycles in children aged 3-10 years using active anterior rhinomanometry.
- To determine if nasal cycles in children are subject to a regulatory mechanism, similar to adults.
Summary:
- Nasal airflow was measured every 15 minutes for 2 hours on both sides at a 1 mbar pressure in children aged 3-10.
- Nasal cycles were identified in 79% of children aged 7-10 and 50% of children aged 3-6, using Hasegawa's and Kern's criteria.
- Correlation analysis of nasal airflow measurements indicated that nasal cycles in children are regulated, unlike non-specific "solidary movements".
Impact:
- This study provides evidence for the presence of regulated nasal cycles in a significant proportion of children, even at younger ages.
- Findings challenge previous assumptions about the developmental timing of nasal cycle regulation.
- Contributes to a better understanding of pediatric nasal physiology and potential clinical implications.
Abstract:
By means of active anterior rhinorheomanometry we searched for nasal cycles in children of 3-10 years of age. We measured the nasal air flow every 15 minutes for a period of 2 hours on both sides in relation to a pressure of 1 mbar. In the group of the 7-10 year old children we found nasal cycles in 79 per cent according to Hasegawa's and Kern's definition. In contrast to other authors nasal cycles were also ascertained in 50 per cent of the 3-6 year old children: Computing the correlation coefficient between the difference of one measurement from the right and left mean nasal air flow, we could demonstrate that the nasal cycle was actually subject to a regulatory mechanism. In contrast "solidary movements" showed no regulation in our challenge-controlled measurements.