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Symptomatic Hyperventilation in Individuals Living With Stroke

19. september 2026 oppdatert av: Yunus Emre Tutuneken, Istinye University

Impact of Symptomatic Hyperventilation on Respiratory Parameters and Functional Capacity Among Individuals Living With Stroke: A Comparative Study

This study will investigate the effects of hyperventilation syndrome on respiratory muscle strength, respiratory muscle endurance, pulmonary functions, and functional capacity in individuals living with stroke, and in this context, stroke patients with and without hyperventilation syndrome based on Nijmegen Questionnaire scores will be compared to evaluate the relationship between symptom burden and respiratory parameters.

Studieoversikt

Studietype

Observasjonsmessig

Registrering (Antatt)

92

Deltakelseskriterier

Forskere ser etter personer som passer til en bestemt beskrivelse, kalt kvalifikasjonskriterier. Noen eksempler på disse kriteriene er en persons generelle helsetilstand eller tidligere behandlinger.

Kvalifikasjonskriterier

Alder som er kvalifisert for studier

18 år til 80 år (Voksen, Eldre voksen)

Tar imot friske frivillige

Nei

Kjønn som er kvalifisert for studier

Alle

Prøvetakingsmetode

Ikke-sannsynlighetsprøve

Studiepopulasjon

The study population will comprise adult individuals diagnosed with stroke (ischaemic or haemorrhagic) who are in the post-stroke period. Participants will be recruited and screened based on the Nijmegen Questionnaire score to form two distinct cohorts: individuals presenting with symptomatic hyperventilation syndrome and individuals without hyperventilation syndrome.

Beskrivelse

Inclusion Criteria:

  • Individuals who will be diagnosed with a confirmed first-ever or recurrent stroke (ischaemic or haemorrhagic) verified by neuroimaging (CT or MRI).
  • Individuals who will be in the chronic or subacute post-stroke period (medically stable following stroke onset).
  • Individuals aged 18 years and older.
  • Individuals who will be classified into either the hyperventilation syndrome group based on a Nijmegen Questionnaire score of ≥23 or the control group based on a score of <23.
  • Individuals who will be able to comprehend instructions and cooperate adequately with pulmonary function tests, respiratory muscle testing, and physical performance assessments.
  • Individuals who will provide written informed consent to participate in the study.

Exclusion Criteria:

  • Individuals who will present with severe cognitive impairment, aphasia, or psychiatric disorders that will prevent reliable completion of questionnaires (such as the Nijmegen Questionnaire) or cooperation with test procedures.
  • Individuals who will have pre-existing primary chronic obstructive pulmonary disease (COPD), asthma, restrictive thoracic diseases, or other major pre-existing pulmonary pathologies that will confound pulmonary function test results.
  • Individuals who will have unstable cardiovascular conditions (e.g., recent myocardial infarction within the past 3-6 months, unstable angina pectoris, uncontrolled malignant arrhythmias, or uncontrolled severe hypertension) that will pose a risk during physical testing (such as the six-minute walk test).
  • Individuals who will have severe orthopedic, musculoskeletal, or lower extremity peripheral disorders unrelated to stroke that will independently limit functional capacity and walking distance (6MWD).
  • Individuals who will have active respiratory tract infections or acute pulmonary illnesses at the time of evaluation. Individuals who will be participating in an active pulmonary rehabilitation program or receiving respiratory muscle training concurrently.

Studieplan

Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.

Hvordan er studiet utformet?

Designdetaljer

  • Observasjonsmodeller: OTHER
  • Tidsperspektiver: PROSPECTIVE

Kohorter og intervensjoner

Gruppe / Kohort
Intervensjon / Behandling
Hyperventilation Syndrome Group

Both groups will undergo comprehensive evaluations including pulmonary function tests (FEV1, FVC, PEF), respiratory muscle strength (PImax, PEmax), respiratory muscle endurance tests, the Nijmegen Questionnaire, and the six-minute walk test (6MWT) to assess functional capacity.

Without Hyperventilation Syndrome Group

Both groups will undergo comprehensive evaluations including pulmonary function tests (FEV1, FVC, PEF), respiratory muscle strength (PImax, PEmax), respiratory muscle endurance tests, the Nijmegen Questionnaire, and the six-minute walk test (6MWT) to assess functional capacity.

Hva måler studien?

Primære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Change in Forced Expiratory Volume in One Second (FEV1 % predicted)
Tidsramme: Measured at baseline/assessment

FEV1 percent predicted values will be measured to evaluate and compare pulmonary function between the hyperventilation syndrome group and the control group.

Measured at baseline/assessment
Maximal inspiratory pressure (PImax)
Tidsramme: Measured at baseline/assessment.

Maximal inspiratory pressure will be assessed to determine respiratory muscle strength.

Measured at baseline/assessment.

Sekundære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Maximal expiratory pressure (PEmax)
Tidsramme: Measured at baseline/assessment.

Maximal expiratory pressure will be assessed to determine respiratory muscle strength.

Measured at baseline/assessment.
Respiratory Muscle Endurance Score
Tidsramme: Measured at baseline/assessment.

Respiratory muscle endurance scores will be recorded to evaluate breathing endurance between groups.

Measured at baseline/assessment.
Forced Vital Capacity (FVC)
Tidsramme: Measured at baseline/assessment.

FVC percentage value will be analyzed to assess restrictive patterns and flow rates.

Measured at baseline/assessment.
Peak Expiratory Flow (PEF)
Tidsramme: Measured at baseline/assessment.

PEF value will be analyzed to assess restrictive patterns and flow rates.

Measured at baseline/assessment.
Six-Minute Walk Distance (6MWD)
Tidsramme: Measured at baseline/assessment.

The six-minute walk test will be performed to measure functional capacity distance in meters.

Measured at baseline/assessment.

Samarbeidspartnere og etterforskere

Det er her du vil finne personer og organisasjoner som er involvert i denne studien.

Studierekorddatoer

Disse datoene sporer fremdriften for innsending av studieposter og sammendragsresultater til ClinicalTrials.gov. Studieposter og rapporterte resultater gjennomgås av National Library of Medicine (NLM) for å sikre at de oppfyller spesifikke kvalitetskontrollstandarder før de legges ut på det offentlige nettstedet.

Studer hoveddatoer

Studiestart (Antatt)

25. september 2026

Primær fullføring (Antatt)

15. desember 2026

Studiet fullført (Antatt)

15. desember 2026

Datoer for studieregistrering

Først innsendt

19. september 2026

Først innsendt som oppfylte QC-kriteriene

19. september 2026

Først lagt ut (Faktiske)

25. september 2026

Oppdateringer av studieposter

Sist oppdatering lagt ut (Faktiske)

25. september 2026

Siste oppdatering sendt inn som oppfylte QC-kriteriene

19. september 2026

Sist bekreftet

1. september 2026

Mer informasjon

Begreper knyttet til denne studien

Legemiddel- og utstyrsinformasjon, studiedokumenter

Studerer et amerikansk FDA-regulert medikamentprodukt

Nei

Studerer et amerikansk FDA-regulert enhetsprodukt

Nei

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