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USCOM For Assessing Patients With COPD

NCT02329522 · Status: UNKNOWN · Type: OBSERVATIONAL · Enrollment: 200

Last updated 2017-10-02

No results posted yet for this study

Summary

Objective

The Ultrasonic Cardiac Output Monitor (USCOM) is a non-invasive, quantitative method for measuring and monitoring cardiovascular haemodynamic parameters in patients. The aims of this study are:

1. To investigate whether there is any correlation between haemodynamic parameters and COPD severity.
2. To investigate whether USCOM-derived haemodynamic variables may be used as prognostic indicators of 6-month, 1-year, 3-year and 5-year readmission.
3. To investigate whether USCOM-derived haemodynamic variables may be used as prognostic indicators of 6-month, 1-year, 3-year and 5-year all-cause mortality.

Design, Setting and Subjects This prospective observational study will be conducted in the Prince of Wales Hospital in Hong Kong.

Interventions Haemodynamic measurements made using the USCOM, and spirometry, will be performed as appropriate on subjects in respiratory clinic, the emergency department, medical wards and on ICU. In order to assess inter-observer variability, a second, blinded operator will repeated 15% of scans.

Conditions

Interventions

DEVICE

Ultrasonic Cardiac Output Monitor

An Ultrasonic Cardiac Output Monitor (USCOM; USCOM Pty Ltd, NSW, Australia) is a non-invasive Doppler ultrasonography. It is capable of measuring haemodynamic parameters non-invasively and appears to be simple and rapid to use, portable, relatively inexpensive and has less potential complications compared with the standard technique, pulmonary artery thermodilution (PATD). USCOM scans will be performed on patients to measure direct and derived haemodynamic variables, which will be performed in the supine position wherever possible. A transducer will be placed on the chest in either the suprasternal position to measure trans-aortic blood flow, or the left parasternal position to measure transpulmonary blood flow.

DEVICE

Spirometry

Spirometry assesses lung function through measuring the amount (volume) and/or speed (flow) of air that can be inhaled and exhaled. Patients are regarded as COPD if their Forced expiratory volume in 1 second (FEV1) to Forced vital capacity (FVC) ratio are smaller than 70%. Patients were required to perform three blowing manoeuvres, and post-bronchodilator test results were obtained within 20 minutes to 4 hours after inhaling 400 mg of salbultamol.

Sponsors & Collaborators

  • Chinese University of Hong Kong

    lead OTHER

Principal Investigators

  • Timothy H Rainer, MD FCEM · Accident & Emergency Medicine Academic Unit

Eligibility

Min Age
40 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2014-02-28
Primary Completion
2014-10-31
Completion
2020-09-30

Countries

  • China

Study Locations

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Entities

Diseases

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT02329522 on ClinicalTrials.gov