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Comparison of Arterial and Capillary Blood Gas Analyses in Patients With Respiratory Distress Due to COPD or APE (GAZOCAP)

1 de octubre de 2026 actualizado por: Centre Hospitalier Universitaire de Nice

The assessment of gas exchange is crucial for the management of patients suffering from respiratory distress due to an exacerbation of chronic obstructive pulmonary disease (COPD) or cardiogenic acute pulmonary edema (APE). These measurements are used by physicians to determine the need for noninvasive ventilation (NIV) as well as to evaluate its effectiveness and to decide whether to continue the treatment.

Arterial blood gas analysis is currently the gold standard for the measurement of these gas exchanges, though invasive, painful and risky (failure risks and possible local complications). Capillary blood gas analysis, which consists in collecting a blood drop from the ear or the finger by capillarity after punction, could represent a less invasive alternative. However, data comparing the performances of arterial and capillary blood gas analysis in the context of respiratory distress requiring a NIV remain limited.

This study is based on the hypothesis that capillary blood gas analysis can perform as well as arterial blood gas analysis. It is aimed at comparing values obtained from arterial and capillary blood gas analyses from patients with respiratory distress and requiring a NIV due to an exacerbation of COPD or cardiogenic APE.

Descripción general del estudio

Estado

Reclutamiento

Condiciones

Intervención / Tratamiento

Tipo de estudio

Intervencionista

Inscripción (Estimado)

65

Fase

  • No aplica

Contactos y Ubicaciones

Esta sección proporciona los datos de contacto de quienes realizan el estudio e información sobre dónde se lleva a cabo este estudio.

Estudio Contacto

  • Nombre: Nathalie Ducot, MD-PhD
  • Número de teléfono: +33 (0)4 92 03 32 42
  • Correo electrónico: ducot.n@chu-nice.fr

Copia de seguridad de contactos de estudio

  • Nombre: Charlotte Monge
  • Número de teléfono: +33 (0)7 87 51 25 93
  • Correo electrónico: monge.c@chu-nice.fr

Ubicaciones de estudio

      • Nice, Francia, 06000
        • Reclutamiento
        • CHU de Nice
        • Contacto:
          • Nathalie Ducot, MD-PhD
          • Número de teléfono: +33 (0)4 92 03 32 42
          • Correo electrónico: ducot.n@chu-nice.fr

Criterios de participación

Los investigadores buscan personas que se ajusten a una determinada descripción, denominada criterio de elegibilidad. Algunos ejemplos de estos criterios son el estado de salud general de una persona o tratamientos previos.

Criterio de elegibilidad

Edades elegibles para estudiar

18 años y mayores (Adulto, Adulto Mayor)

Acepta Voluntarios Saludables

No

Géneros elegibles para el estudio

Todos

Descripción

Inclusion Criteria:

  • Patients older than 18 years old
  • Patients admitted in the emergency care unit with an exacerbation of COPD or a cardiogenic APE requiring a non-invasive ventilation (i.e. for COPD patients pH< 7.35, for APE patients: PCO2 > 45 mmHg)
  • Patients affiliated to a social security system

Exclusion Criteria:

  • Patients for which a non-invasive ventilation was initiated upon pre-hospital care
  • Contraindication for non-invasive ventilation
  • Patients for which non-invasive ventilation is not indicated
  • Patients for which capillary or arterial blood gas analyses are impossible
  • Adults subject to legal guardianship (guardianship, conservatorship)
  • Pregnant women
  • Patients with a congenital heart disease

Plan de estudios

Esta sección proporciona detalles del plan de estudio, incluido cómo está diseñado el estudio y qué mide el estudio.

¿Cómo está diseñado el estudio?

Detalles de diseño

  • Propósito principal: Diagnóstico
  • Asignación: N / A
  • Modelo Intervencionista: Asignación de un solo grupo
  • Enmascaramiento: Ninguno (etiqueta abierta)

Armas e Intervenciones

Grupo de participantes/brazo
Intervención / Tratamiento
Experimental: Respiratory distress arm requiring a noninvasive ventilation

The intervention consists in carrying out arterial, veinous and capillary blood gas analyses before submitting the patient to noninvasive ventilation (5 minutes will separate each sampling). Data from these samplings will be recorded. 1 hour after the implementation of the noninvasive ventilation, patients will once again undergo arterial, veinous and capillary samplings for blood gas analyses. Respiratory parameters will be recorded as well at the onset of the noninvasive ventilation and one hour after its start.

¿Qué mide el estudio?

Medidas de resultado primarias

Medida de resultado
Medida Descripción
Periodo de tiempo
Agreement between carbon dioxide pressure (PCO2) values obtained from capillary and arterial blood gas analyses in patients requiring a non-invasive ventilation due to an exacerbation of COPD or a cardiogenic APE.
Periodo de tiempo: Baseline (once the patient arrives at the emergency care unit and is included in the study)

Agreement between arterial and capillary pCO₂ measurements, assessed using Bland-Altman analysis with mean bias and the 95% limits of agreement

Baseline (once the patient arrives at the emergency care unit and is included in the study)

Medidas de resultado secundarias

Medida de resultado
Medida Descripción
Periodo de tiempo
Agreement between pH values obtained from capillary and arterial blood gas analyses in patients requiring a non-invasive ventilation due to an exacerbation of COPD or a cardiogenic APE
Periodo de tiempo: Baseline (once the patient arrives at the emergency care unit and is included in the study)

Agreement between pH values obtained from capillary and arterial blood gas analyses, assessed using Bland-Altman analysis with mean bias and the 95% limits of agreement.

Baseline (once the patient arrives at the emergency care unit and is included in the study)
Agreement between bicarbonate concentration values obtained from capillary and arterial blood gas analyses in patients requiring a non-invasive ventilation due to an exacerbation of COPD or a cardiogenic APE.
Periodo de tiempo: Baseline (once the patient arrives at the emergency care unit and is included in the study)

Agreement between bicarbonate concentration values obtained from capillary and arterial blood gas analyses, assessed using Bland-Altman analysis with mean bias and the 95% limits of agreement.

Baseline (once the patient arrives at the emergency care unit and is included in the study)
Agreement between base concentration values obtained from capillary and arterial blood gas analyses in patients requiring a non-invasive ventilation due to an exacerbation of COPD or a cardiogenic APE.
Periodo de tiempo: Baseline (once the patient arrives at the emergency care unit and is included in the study)

Agreement between base concentration values obtained from capillary and arterial blood gas analyses, assessed using Bland-Altman analysis with mean bias and the 95% limits of agreement

Baseline (once the patient arrives at the emergency care unit and is included in the study)
Agreement between PCO2 values obtained from capillary and arterial blood gas analyses in patients with an exacerbation of COPD or a cardiogenic APE one hour after initiation of non-invasive ventilation.
Periodo de tiempo: One hour after initiation of non-invasive ventilation.

Agreement between PCO2 values obtained from capillary and arterial blood gas analyses, assessed using Bland-Altman analysis with mean bias and the 95% limits of agreement

One hour after initiation of non-invasive ventilation.
Agreement between pH values obtained from capillary and arterial blood gas analyses in patients with an exacerbation of COPD or a cardiogenic APE one hour after initiation of non-invasive ventilation.
Periodo de tiempo: One hour after initiation of non-invasive ventilation.

Agreement between pH values obtained from capillary and arterial blood gas analyses, assessed using Bland-Altman analysis with mean bias and the 95% limits of agreement.

One hour after initiation of non-invasive ventilation.
Agreement between bicarbonate concentration values obtained from capillary and arterial blood gas analyses in patients with an exacerbation of COPD or a cardiogenic APE one hour after initiation of non-invasive ventilation.
Periodo de tiempo: One hour after initiation of non-invasive ventilation.

Agreement between bicarbonate concentration values obtained from capillary and arterial blood gas analyses, assessed using Bland-Altman analysis with mean bias and the 95% limits of agreement

One hour after initiation of non-invasive ventilation.
Agreement between base concentration values obtained from capillary and arterial blood gas analyses in patients with an exacerbation of COPD or a cardiogenic APE one hour after initiation of non-invasive ventilation.
Periodo de tiempo: One hour after initiation of non-invasive ventilation.

Agreement between base concentration values obtained from capillary and arterial blood gas analyses, assessed using Bland-Altman analysis with mean bias and the 95% limits of agreement.

One hour after initiation of non-invasive ventilation.
Agreement between PCO2 values obtained from veinous and arterial blood gas analyses in patients requiring a non-invasive ventilation due to an exacerbation of COPD or a cardiogenic APE.
Periodo de tiempo: Baseline (once the patient arrives at the emergency care unit and is included in the study).

Agreement between PCO2 values obtained from veinous and arterial blood gas analyses, assessed using Bland-Altman analysis with mean bias and the 95% limits of agreement

Baseline (once the patient arrives at the emergency care unit and is included in the study).
Agreement between pH values obtained from veinous and arterial blood gas analyses in patients requiring a non-invasive ventilation due to an exacerbation of COPD or a cardiogenic APE.
Periodo de tiempo: Baseline (once the patient arrives at the emergency care unit and is included in the study).

Agreement between pH values obtained from veinous and arterial blood gas analyses, assessed using Bland-Altman analysis with mean bias and the 95% limits of agreement.

Baseline (once the patient arrives at the emergency care unit and is included in the study).
Agreement between bicarbonate concentration values obtained from veinous and arterial blood gas analyses in patients requiring a non-invasive ventilation due to an exacerbation of COPD or a cardiogenic APE.
Periodo de tiempo: Baseline (once the patient arrives at the emergency care unit and is included in the study).

Agreement between bicarbonate concentration values obtained from veinous and arterial blood gas analyses, assessed using Bland-Altman analysis with mean bias and the 95% limits of agreement

Baseline (once the patient arrives at the emergency care unit and is included in the study).
Agreement between base concentration values obtained from veinous and arterial blood gas analyses in patients requiring a non-invasive ventilation due to an exacerbation of COPD or a cardiogenic APE.
Periodo de tiempo: Baseline (once the patient arrives at the emergency care unit and is included in the study).

Agreement between base concentration values obtained from veinous and arterial blood gas analyses, assessed using Bland-Altman analysis with mean bias and the 95% limits of agreement

Baseline (once the patient arrives at the emergency care unit and is included in the study).
Agreement between PCO2 values obtained from veinous and arterial blood gas analyses in patients with an exacerbation of COPD or a cardiogenic APE one hour after initiation of non-invasive ventilation.
Periodo de tiempo: One hour after initiation of non-invasive ventilation.

Agreement between PCO2 values obtained from veinous and arterial blood gas analyses, assessed using Bland-Altman analysis with mean bias and the 95% limits of agreement

One hour after initiation of non-invasive ventilation.
Agreement between pH values obtained from veinous and arterial blood gas analyses in patients with an exacerbation of COPD or a cardiogenic APE one hour after initiation of non-invasive ventilation.
Periodo de tiempo: One hour after initiation of non-invasive ventilation.

Agreement between pH values obtained from veinous and arterial blood gas analyses, assessed using Bland-Altman analysis with mean bias and the 95% limits of agreement

One hour after initiation of non-invasive ventilation.
Agreement between bicarbonate concentration values obtained from veinous and arterial blood gas analyses in patients with an exacerbation of COPD or a cardiogenic APE one hour after initiation of non-invasive ventilation.
Periodo de tiempo: One hour after initiation of non-invasive ventilation.

Agreement between Bicarbonate concentration values obtained from veinous and arterial blood gas analyses, assessed using Bland-Altman analysis with mean bias and the 95% limits of agreement

One hour after initiation of non-invasive ventilation.
Agreement between base concentration values obtained from veinous and arterial blood gas analyses in patients with an exacerbation of COPD or a cardiogenic APE one hour after initiation of non-invasive ventilation.
Periodo de tiempo: One hour after initiation of non-invasive ventilation.

Agreement between base concentration values obtained from veinous and arterial blood gas analyses, assessed using Bland-Altman analysis with mean bias and the 95% limits of agreement

One hour after initiation of non-invasive ventilation.

Colaboradores e Investigadores

Aquí es donde encontrará personas y organizaciones involucradas en este estudio.

Patrocinador

Fechas de registro del estudio

Estas fechas rastrean el progreso del registro del estudio y los envíos de resultados resumidos a ClinicalTrials.gov. Los registros del estudio y los resultados informados son revisados ​​por la Biblioteca Nacional de Medicina (NLM) para asegurarse de que cumplan con los estándares de control de calidad específicos antes de publicarlos en el sitio web público.

Fechas importantes del estudio

Inicio del estudio (Actual)

28 de septiembre de 2026

Finalización primaria (Estimado)

24 de marzo de 2027

Finalización del estudio (Estimado)

24 de marzo de 2027

Fechas de registro del estudio

Enviado por primera vez

17 de septiembre de 2026

Primero enviado que cumplió con los criterios de control de calidad

17 de septiembre de 2026

Publicado por primera vez (Actual)

23 de septiembre de 2026

Actualizaciones de registros de estudio

Última actualización publicada (Actual)

2 de octubre de 2026

Última actualización enviada que cumplió con los criterios de control de calidad

1 de octubre de 2026

Última verificación

1 de octubre de 2026

Más información

Términos relacionados con este estudio

Otros números de identificación del estudio

  • 25-PP-13

Plan de datos de participantes individuales (IPD)

¿Planea compartir datos de participantes individuales (IPD)?

INDECISO

Información sobre medicamentos y dispositivos, documentos del estudio

Estudia un producto farmacéutico regulado por la FDA de EE. UU.

No

Estudia un producto de dispositivo regulado por la FDA de EE. UU.

No

Esta información se obtuvo directamente del sitio web clinicaltrials.gov sin cambios. Si tiene alguna solicitud para cambiar, eliminar o actualizar los detalles de su estudio, comuníquese con register@clinicaltrials.gov. Tan pronto como se implemente un cambio en clinicaltrials.gov, también se actualizará automáticamente en nuestro sitio web. .