COPD Clinical Trial
Official title:
Comparing Exercise Capacity in Patients With COPD Using High Flow Nasal Cannula Oxygen vs The Venturi Mask
The aim of this study is to compare exercise capacity in COPD patients through two different systems of supplemental oxygen delivery: High Flow Nasal Cannula Oxygen (HFNCO) and The Venturi Mask (VM).
Design: interventional, crossover, randomized.
The main goal of this study is to compare the maximum speed reached in an Incremental Load
Treadmill Test (ILTT) and max time tolerated in a Constant Treadmill Load Test (CTLT) while
using two different oxygen delivery devices (High Flow Nasal Cannula Oxygen and The Mask
Venturi).
Patients will be evaluated through two different kinds of tests: Incremental Load Treadmill
Test (ILTT) and Constant Treadmill Load Test (CTLT). Each test will be conducted two times,
once using HFNCO and the other time with The VM.
In total, each patient will be evaluated four times on four different visits. The testing
order will be randomized through STATA.
The following variables will be measured before, during and after each test:
1. Max speed reached in an Incremental load test: Km/h
2. Max time tolerate in a Constant Load Test: in seconds
3. Oxygen saturation: %
4. Dyspnea: Modified Borg scale (0-10)
5. Cardiac rate: beats per minute
6. Respiratory rate: breaths per minute
7. Blood pressure: mmHg
8. Lower limbs fatigue: modified Borg scale (0-10)
9. Global comfort according to the device used: visual analogue scale (VAS) 0-10
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