{
  "abstract": "Introduction Following a feasibility study between 2019–2021, 1 we introduced a modified hypoxic challenge test (mHCT) to aid clinicians advising families and patients with complex needs, who used long term ventilation and planned air travel. We wanted to assess if the medical recommendations provided from the test were practical and used by the patient during air travel.Methods Patients who completed the test between November 2022 and October 2024 were contacted via telephone or asked in a follow-up consultation to complete a survey consisting of 7 questions that were asked by the medical team.Results We identified 38 patients (median age 6.8 years, range 3 m – 18 y) as eligible: 11 with neuromuscular disorders, 11 central hypoventilation disorders (e.g. CCHS, ROHHAD) and 16 with other diagnoses. The response rate was 30/38 patients and 21 of these took flights following mHCT. All patients followed the guidance, with 18 using NIV and/or supplemental oxygen. One patient reported respiratory difficulty during the flight but had an intercurrent illness at the time of flying. Whilst using ventilation, 48% required additional oxygen, the remainder using ventilation alone ( table 1). Family feedback commented on gaining reassurance from the test.Conclusion This service evaluation indicated the mHCT can inform the role of ventilatory support and reduce oxygen need during air travel, though it should be noted that this laboratory testing may not mirror an aeroplane environment. For patients and their families, mHCT helped travel planning, provided reassurance and had a cost benefit in reducing the need for supplementary oxygen.Abstract P51 Table 1Reference Riley M, et al. Pediatr Pulmonol. 2023;58:88–97.",
  "authors": [
    {
      "affiliations": [
        "Great Ormond Street Hospital, London, UK"
      ],
      "name": "Stephanie Brotherston"
    },
    {
      "affiliations": [
        "Great Ormond Street Hospital, London, UK"
      ],
      "name": "Paul Aurora"
    },
    {
      "affiliations": [
        "Great Ormond Street Hospital, London, UK"
      ],
      "name": "Aidan Laverty"
    },
    {
      "affiliations": [
        "Great Ormond Street Hospital, London, UK"
      ],
      "name": "Rogers Kirstie"
    },
    {
      "affiliations": [
        "Great Ormond Street Hospital, London, UK"
      ],
      "name": "Riley Mollie"
    },
    {
      "affiliations": [
        "Great Ormond Street Hospital, London, UK"
      ],
      "name": "Warraich Sara"
    },
    {
      "affiliations": [
        "Great Ormond Street Hospital, London, UK"
      ],
      "name": "Martin Samuels"
    }
  ],
  "title": "P51 Service evaluation: the modified hypoxic challenge test",
  "uid": "0f28880e-4646-5ba5-a54a-070079a2ea45"
}