Related Experiment Video
Updated: Apr 15, 2026

Conducting Respiratory Oscillometry in an Outpatient Setting
Published on: April 8, 2022
Monitoring strategies in children with asthma: a randomised controlled trial
Sandra Voorend-van Bergen1, Anja A Vaessen-Verberne2, Hein J Brackel3
1Department of Paediatrics, Division Paediatric Respiratory Medicine, Erasmus University Medical Centre-Sophia Children's Hospital, Rotterdam, the Netherlands.
Insights
Web-based asthma monitoring using the Asthma Control Test (ACT) allowed for significant reductions in inhaled corticosteroid (ICS) use while maintaining symptom control. This approach offers a promising strategy for managing childhood asthma effectively.
Area of Science:
- Pediatric Pulmonology
- Clinical Trial Research
- Asthma Management
Background:
- Asthma guidelines emphasize monitoring, yet many children have poorly controlled asthma.
- Optimal monitoring strategies for pediatric asthma remain unclear.
Purpose of the Study:
- To compare web-based monthly ACT monitoring and 4-monthly FENO monitoring against standard care (SC) for improving asthma outcomes.
- To evaluate the efficacy of different asthma monitoring strategies in children.
Main Methods:
- A 1-year, randomized controlled trial involving children aged 4-18 with asthma.
- Three groups: web-based ACT monitoring, FENO monitoring, and standard care.
- Primary endpoint: change in proportion of symptom-free days (SFD).
Main Results:
- No significant difference in SFD changes between the web, FENO, and SC groups.
- Web-based ACT monitoring led to a significant reduction in inhaled corticosteroid (ICS) dosage.
- Asthma control (ACT and SFD) was maintained despite ICS reduction in the web group.
Conclusions:
- The change in symptom-free days did not differ significantly across the monitoring strategies.
- Web-based ACT monitoring facilitates substantial ICS reduction without compromising asthma control.
- This study highlights the potential of digital health tools in asthma management.
Background:
Asthma guidelines recommend monitoring of asthma control. However, in a substantial proportion of children, asthma is poorly controlled and the best monitoring strategy is not known.
Objectives:
We studied two monitoring strategies for their ability to improve asthma outcomes in comparison with standard care (SC): web-based monthly monitoring with the (Childhood) Asthma Control Test (ACT or C-ACT) and 4-monthly monitoring of FENO.
Methods:
In this randomised controlled, partly blinded, parallel group multicentre trial with a 1-year follow-up, children aged 4-18 with a doctor's diagnosis of asthma treated in seven hospitals were randomised to one of the three groups. In the web group, treatment was adapted according to ACT obtained via a website at 1-month intervals; in the FENO group according to ACT and FENO, and in the SC group according to the ACT at 4-monthly visits. The primary endpoint was the change from baseline in the proportion of symptom-free days (SFD).
Results:
Two-hundred and eighty children (mean age 10.4 years, 66% boys) were included; 268 completed the study. Mean changes from baseline in SFD were similar between the groups: -2.1% (web group, n=90), +8.9% (FENO group, n=91) versus 0.15% (SC, n=87), p=0.15 and p=0.78. Daily dose of inhaled corticosteroids (ICS) decreased more in the web-based group compared with both other groups (-200 μg/day, p<0.01), while ACT and SFD remained similar.
Conclusions:
The change from baseline in SFD did not differ between monitoring strategies. With web-based ACT monitoring, ICS could be reduced substantially while control was maintained.
Trial Registration Number:
NTR 1995.
Related Concept Videos
Asthma-IV: Diagnostic and Management
Clinical Assessment for Asthma:
This is the first step in diagnosing and managing asthma. It includes:
Asthma-IV: Nursing Management
First, in...
Antiasthma Drugs: β2-Adrenoceptor Agonists
One class of bronchodilators includes β2-adrenoceptor agonists. These agents target the β2-adrenoceptors located on bronchial smooth muscle cells. By stimulating these receptors, β2-agonists induce...
Asthma-I: Introduction
Antiasthma Drugs: Mast Cell Stabilizers and Anti-IgE Drugs
Mast cell stabilizers, such as cromolyn (also known as sodium cromoglycate) and nedocromil (Tilade), are effective drugs in asthma management. These stabilizers hinder histamine release by skillfully obstructing the activation of mast cells and other cellular entities. Notably, they navigate this task without...
Antiasthma Drugs: Leukotriene Modifiers
Leukotriene modifiers work through two distinct mechanisms:

