A Simple Clinical Tool to Help Diagnose Pulmonary Embolism: Phase 1

Overview

Información sobre este estudio

The goal of this project is to determine if the change in oxygen saturation during deep inspiration ("augmented pulse oximetry") can be used as a method to rule out pulmonary embolism (PE). The investigators propose to evaluate a simple, non-invasive clinical tool to help rule out PE. The investigators plan to measure the oxygen saturation of 40 consecutive patients with newly-diagnosed PE (within 60 minutes of diagnosis) and 80 matched controls who do not have a PE. Trained, blinded Respiratory Therapists will record each patient's oxygen saturation before, during, and after a 2-minute period of deep inspirations (vital capacity [the maximal amount of air that can be inhaled, measured in milliliters]) using an incentive spirometer. The investigators' central hypothesis is that persons with a PE will not respond to augmented pulse oximetry and will not significantly improve or normalize their oxygen saturation.

Elegibilidad para la participación

Los requisitos de elegibilidad de los participantes incluyen la edad, el sexo, el tipo y el estadio de la enfermedad, y los problemas de salud o tratamientos previos. Las pautas difieren de un estudio a otro e identifican quiénes pueden o no pueden participar. No hay garantía de que cada persona elegible que desee participar en un ensayo se inscribirá. Comunícate con el equipo del estudio para analizar la elegibilidad del estudio y la posible participación.

Inclusion Criteria:

  • 18 years of age or greater.
  • Agrees and able to participate in the study.
  • Room air SpO2 (oxygen saturation) less than 92% and newly-diagnosed PE (or controls with no PE) based on CT angiogram result.

Exclusion Criteria:

  • Clinical concern for instability.
  • Systolic blood pressure less than 100 mm Hg.
  • Heart rate ≥140 beats per minute.
  • Oxygen saturation less than 85% with more than 4 L supplemental oxygen.
  • Unable to participate/comply with instructions for using the incentive spirometer.
  • Patients from the Federal Medical Center in Rochester, Minnesota.
  • Patients who do not speak English (due to the need for expediency).

Patients will be under the care of the Emergency Department team who have the skills and resources to monitor and treat patients if they were to become unstable.

Sedes participantes de Mayo Clinic

Los estatus de los estudios cambian con frecuencia. Comunícate con el equipo del estudio para obtener la información más actualizada acerca de la posibilidad de participar.

Sede de Mayo Clinic Estatus Contacto

Rochester, Minn.

Investigador principal de Mayo Clinic

Allan Keller, M.D., M.S.

Cerrado; inscripción por invitación

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El estudio no está abierto para todos los que cumplen con los criterios de elegibilidad, sino solamente para las personas que el equipo del estudio ha invitado a participar.

Contact information:

Donna Lawson CCRP

(507) 255-7975

Lawson.Donna3@mayo.edu

More information

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CLS-20118283

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