Clinical trial NCT06603584: Phenotypes of Preschool Wheezing Among Children Attending Sohag University Hospital
Official title: Phenotypes of Preschool Wheezing Among Children Attending Sohag University Hospital
Study type: OBSERVATIONAL
Overall status: RECRUITING
Conditions: Wheezing
Lead sponsor: Sohag University
Sponsor class: OTHER
First posted: 2024-09-19
Enrollment: 100
Sex: ALL
Minimum age (years): 2
Maximum age (years): 6
Standard ages: CHILD
Accepts healthy volunteers: no
Observational model: CASE_ONLY
Time perspective: RETROSPECTIVE
Sampling method: PROBABILITY_SAMPLE
Study population: - patients from the age of one to five years with recurrent wheezing

Brief summary: Wheezing in preschool children is very common, with a wide differential diagnosis. It is essential to be sure of the exact sound that parents are describing; the term 'wheeze' is often applied to non-specific sound.Approximately one-third of children are diagnosed with wheeze in the first 3 years of life, making wheeze one of the commonest respiratory symptoms.The differential diagnosis of wheeze is wide, and different management strategies are needed depending on the underlying phenotype. The word 'wheeze' is used to describe many different sounds. That can be heard by both clincians and parent. Even if true wheeze is heard, this should not be automatically assumed to be due to bronchospasm. Airway narrowing by mucus will produce true wheeze but does not respond to bronchodilators. Similarly, airway malacia, either related to intrinsic airway wall defects or loss of alveolar tethering points, are also causes of bronchodilatorunresponsive wheeze; indeed, bronchodilators, by reducing airway smooth muscle tone, may actually worsen airway narrowing.


Eligibility criteria: Inclusion Criteria:

* patients from the age of one to five years with recurrent wheezing

Exclusion Criteria:

* Children above 5 years and below one year old.
* Failure to obtain informed consent.
* Children below 6 years with chest diseases other than wheezing

Primary outcomes:
measure: Forced Expiratory Volume
timeFrame: 6 months
Secondary outcomes:
Other outcomes:
Locations:
city: Sohag
country: Egypt
facility: Sohag university Hospital
Study officials:
References:
citation: Fitzpatrick AM, Bacharier LB, Guilbert TW, Jackson DJ, Szefler SJ, Beigelman A, Cabana MD, Covar R, Holguin F, Lemanske RF Jr, Martinez FD, Morgan W, Phipatanakul W, Pongracic JA, Zeiger RS, Mauger DT; NIH/NHLBI AsthmaNet. Phenotypes of Recurrent Wheezing in Preschool Children: Identification by Latent Class Analysis and Utility in Prediction of Future Exacerbation. J Allergy Clin Immunol Pract. 2019 Mar;7(3):915-924.e7. doi: 10.1016/j.jaip.2018.09.016. Epub 2018 Sep 26.
citation: Lowe LA, Simpson A, Woodcock A, Morris J, Murray CS, Custovic A; NAC Manchester Asthma and Allergy Study Group. Wheeze phenotypes and lung function in preschool children. Am J Respir Crit Care Med. 2005 Feb 1;171(3):231-7. doi: 10.1164/rccm.200406-695OC. Epub 2004 Oct 22.
citation: Salehian S, Fleming L, Saglani S, Custovic A. Phenotype and endotype based treatment of preschool wheeze. Expert Rev Respir Med. 2023 Jul-Dec;17(10):853-864. doi: 10.1080/17476348.2023.2271832. Epub 2023 Nov 24.
citation: Kwong CG, Bacharier LB. Phenotypes of wheezing and asthma in preschool children. Curr Opin Allergy Clin Immunol. 2019 Apr;19(2):148-153. doi: 10.1097/ACI.0000000000000516.