{
  "id": 4481036,
  "title": "Fractional exhaled nitric oxide elevated in pediatric chest tightness-variant asthma",
  "url": "https://urgent.news/2026/08/30/fractional-exhaled-nitric-oxide-elevated-in-pediatric-chest-tightness",
  "topic": "health",
  "section": "Health & Medicine",
  "published": "2026-08-30T19:00:01.000Z",
  "source": {
    "name": "Medical Xpress",
    "slug": "medical-xpress",
    "url": "https://medicalxpress.com/news/2026-08-fractional-exhaled-nitric-oxide-elevated.html"
  },
  "original_language": "en",
  "account": "Children diagnosed with chest tightness variant asthma (CTVA) in a Chinese retrospective case-control study exhibited elevated fractional exhaled nitric oxide (FeNO) levels and reduced forced expiratory volume in one second (FEV1), forced vital capacity (FVC), and peak expiratory flow compared to healthy controls. Researchers from Cangzhou Central Hospital found that obesity, inhalant allergen sensitization, allergic rhinitis, atopic dermatitis, chronic respiratory infections, and family history of allergic diseases were significantly associated with CTVA. However, further formal diagnostic accuracy studies are required to validate the use of combined FeNO and small airway indicators in diagnosing CTVA.",
  "summary": "Children with chest tightness variant asthma (CTVA) have higher fractional exhaled nitric oxide (FeNO) levels and lower measures of small airway function, according to a study published online Aug. 10 in Frontiers in Pediatrics.",
  "key_points": [
    "Children with chest tightness variant asthma had elevated FeNO levels.",
    "CTVA patients showed reduced FEV1, FVC, and peak expiratory flow.",
    "Obesity, allergen sensitization, and family history linked to CTVA."
  ],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}