Respiratory disease · Brussels

Understanding and controlling asthma.

Asthma is a chronic inflammatory disease of the airways that causes wheezing, cough and breathlessness. At the CIRCAE centre in Woluwe-Saint-Lambert (Brussels), a pulmonologist confirms the diagnosis (spirometry, FeNO), assesses how well your asthma is controlled (ACT test) and adjusts treatment so you can breathe freely.

Signs & triggers

Our goal

Well-controlled asthma

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Diagnose chronic respiratory disorders

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Assess overall lung function

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Measure bronchial inflammation and allergic risk

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Offer personalised, adaptive care

Understanding

What is asthma?

Asthma is a chronic inflammatory disease of the airways. In people with asthma, the bronchi are hyper-reactive: on contact with certain triggers (allergens, infections, exercise, cold air, pollution) they become inflamed and narrow, causing wheezing, cough, chest tightness and breathlessness. These symptoms vary over time and can occur in attacks.

When well managed, asthma is very well controlled and allows a normal life, including sport. The key is to confirm the diagnosis objectively, measure the level of control and adjust the maintenance treatment to prevent attacks.

Diagnosis & control

Measure to treat better

Managing asthma relies on objective tests, beyond symptoms alone.

Spirometry & reversibility

Lung function

Breathing measurement (FEV1) before and after a bronchodilator to objectify airway obstruction and its reversibility, characteristic of asthma.

Exhaled NO (FeNO)

Bronchial inflammation

A simple, painless test that assesses airway inflammation and helps adjust inhaled corticosteroids.

Control test (ACT)

Follow-up

A validated questionnaire assessing your asthma control over the past 4 weeks, to fine-tune treatment.

Allergies & triggers

Skin-prick tests

Identification of the responsible allergens (dust mites, pollens, animals) by skin tests, to limit triggers.

The respiratory assessment

The asthma tests

Diagnosing and following up asthma relies on a pulmonology consultation and pulmonary function tests carried out on site. See the CIRCABREATH respiratory assessment →

First pulmonology consultation

Consultation · Specialist pulmonologist

An in-depth clinical assessment and referral to the most relevant examinations.

  • Analysis of respiratory symptoms (dyspnoea, cough, tightness, wheezing)
  • Assessment of medical and family history
  • Review of exposures (tobacco, environment, allergens)
  • Full respiratory clinical examination
  • Proposal of a personalised breathing assessment

Overnight oximetry: OtwoFellow

Home examination · Non-invasive

Analysis of overnight oximetry using the connected Oxyring. Assessment of the cardiovascular risk associated with apnoea.

  • Oxygen saturation (SpO₂) and heart rate
  • Pulse wave and Hypoxic Burden
  • PWAD: Pulse Wave Amplitude Drops (overnight vascular stress)

Pulmonary function tests (PFTs)

Gold-standard examination · Pulmonology

Essential tests for the diagnosis, severity assessment and follow-up of respiratory diseases.

  • Spirometry: FEV1, FVC, Tiffeneau ratio
  • Plethysmography: lung volumes and residual volume
  • CO diffusing capacity (DLCO): oxygen transfer into the blood
  • Measurement of airway resistance
  • Bronchodilator test: reversibility of obstruction

Exhaled nitric oxide measurement (FeNO)

Simple examination · Bronchial inflammation

A non-invasive marker of eosinophilic bronchial inflammation. A quick, painless examination.

  • Aids the diagnosis of asthma
  • Assessment of the level of airway inflammation
  • Monitoring the effectiveness of anti-inflammatory treatment
  • Adjustment of inhaled corticosteroid doses

Exercise challenge test

Cardio-respiratory examination · Exertion

Detects exercise-induced asthma, exercise hypoxaemia or unexplained dyspnoea.

  • Spirometry before and after exercise (FEV1, flow rates)
  • Oxygen saturation, heart rate and ECG
  • Continuous monitoring of reported symptoms

Objectives

  • Trigger and measure exercise-induced bronchoconstriction
  • Assess exercise tolerance
  • Adjust respiratory treatment

Allergy skin tests (Prick tests)

Allergy · Gold-standard diagnosis

Identification of allergic sensitisation to the main respiratory and food allergens.

  • Pollens, dust mites, animal dander, moulds
  • Food allergens based on the case history
  • Reading after 15–20 min: results in mm

Indications

  • Asthma and allergic rhinitis
  • Atopic eczema, urticaria
  • Assessment before allergen immunotherapy

Explore the assessments