Faculty Collaboration Database

Mechanisms of cough provocation and cough resolution in neonates with bronchopulmonary dysplasia. Pediatr Res 2015 Oct;78(4):462-9

Date

07/08/2015

Pubmed ID

26151491

Pubmed Central ID

PMC4800483

DOI

10.1038/pr.2015.131

Scopus ID

2-s2.0-84942862507 (requires institutional sign-in at Scopus site)   25 Citations

Abstract

BACKGROUND: Cough and deglutition are protective mechanisms that defend against aspiration. We identified mechanisms associated with cough provocation as well as those associated with cough resolution in infants with bronchopulmonary dysplasia (BPD).

METHODS: Manometry signatures of cough were recognized in 16 premature infants with BPD undergoing concurrent esophageal manometry, respiratory inductance plethysmography, and nasal air flow measurements. Pretussive and post-tussive pharyngo-esophageal motility changes were analyzed. Mechanisms associated with cough and mechanisms that restored respiratory and esophageal normalcy were analyzed.

RESULTS: We analyzed 312 cough events during 88 cough clusters; 97% were associated with recognizable manometric patterns. Initial mechanisms related with coughing included nonpropagating swallow (59%), upper esophageal sphincter (UES) reflex contraction (18%), and lower esophageal sphincter (LES) relaxation (14%). UES and LES dysfunction was present in 69% of nonpropagating swallow-associated cough clusters. Mechanisms restoring post-tussive normalcy included primary peristalsis (84%), secondary peristalsis (8%), and none recognized (8%). UES contraction reflex was associated with cough clusters more frequently in infants on nasal continuous positive airway pressure (NCPAP) (OR = 9.13, 95% CI = 1.88-44.24).

CONCLUSION: Cough clusters in infants with BPD had identifiable etiologies associated with esophageal events; common initial mechanisms were of upper aerodigestive origin, while common clearing mechanisms were peristaltic reflexes.

Author List

Jadcherla SR, Hasenstab KA, Shaker R, Castile RG

Author

Reza Shaker MD Assoc Provost, Sr Assoc Dean, Ctr Dir, Chief, Prof in the Medicine department at Medical College of Wisconsin

MESH terms used to index this publication - Major topics in bold

Bronchopulmonary Dysplasia
Chi-Square Distribution
Continuous Positive Airway Pressure
Cough
Deglutition
Esophageal Motility Disorders
Esophagus
Female
Gestational Age
Humans
Infant, Extremely Premature
Infant, Newborn
Logistic Models
Male
Manometry
Multivariate Analysis
Odds Ratio
Peristalsis
Pharynx
Pressure
Reflex
Risk Factors
Time Factors