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Infant sleeping position and inspiratory pressures in the upper airways and oesophagus
1Department of Otorhinolaryngology, Ullevaal, University Hospital, Oslo, Norway.
Insights
Infant sleeping position affects airway pressure. Peak negative inspiratory pressure in the esophagus was lower when infants slept supine with their head straight, indicating potential breathing differences.
Area of Science:
- Pediatric Pulmonology
- Neonatal Physiology
- Sleep Medicine
Background:
- Infant airway anatomy and function are critical for safe sleep.
- Sleeping position can influence upper airway patency and respiratory mechanics.
- Understanding pressure dynamics in different positions is key for assessing infant respiratory health.
Purpose of the Study:
- To investigate the impact of infant sleeping positions on inspiratory pressures.
- To measure airway and esophageal pressures across various sleep postures in healthy neonates and infants.
- To determine if specific sleeping positions correlate with altered inspiratory pressure dynamics.
Main Methods:
- Inspiratory pressures measured at multiple upper airway levels and the esophagus.
- Evaluated 31 healthy infants aged 1-3 days, 25 at 6 weeks, and 23 at 12 weeks.
- Monitored oxygen saturation, ECG, impedance, nasal airflow, and esophageal pressure (PES) in four sleeping positions.
Main Results:
- No significant changes in heart rate, oxygen saturation, or respiratory rate across positions.
- Peak negative inspiratory pressures (PES) were significantly lower in the supine head straight position compared to head turned and prone.
- At 6 weeks, PES was significantly lower in supine head straight versus prone; overall, PES was less negative in supine head straight across all ages, though not always statistically significant.
Conclusions:
- Infant sleeping position, particularly supine with head straight, is associated with reduced negative inspiratory esophageal pressure.
- These findings suggest potential differences in airway resistance or respiratory effort based on sleep posture.
- Further research is warranted to explore the clinical implications of these pressure variations for infant respiratory health.
Abstract:
Inspiratory pressures were measured at three levels in the upper airways and in the oesophagus in different sleeping positions. Thirty one consecutive healthy infants were examined at the age of 1-3 days, 25 of these at 6 weeks, and 23 at 12 weeks. Oxygen saturation, an electrocardiogram, transthoracic impedance, nasal airflow, and inspiratory pressure in the epipharynx, oropharynx, hypopharynx, and in the intrathoracic part of the oesophagus were measured. There was no significant change in the heart rate, oxygen saturation, or respiratory rate in the four sleeping positions. The peak negative inspiratory pressures obtained from the oesophagus (PES) were significantly lower in the supine head straight compared with the supine head turned and the prone positions. At 6 weeks, the only significant difference was between the supine head straight and the prone positions. The PES is less negative at all ages in the supine head straight than in all other sleeping positions, but this does not reach statistical significance.