Cardiorespiratory Fitness
Conditions
Keywords
areobic power, cardiopulmonary exercise testing, exercise capacity, functional capacity, physical activity
Brief summary
This study will compare the measured oxygen consumption (VO2) obtained during sub-maximal exercise testing with the estimated VO2 derived from a non-exercise questionnaire.
Detailed description
All surgical patients presenting at the Preoperative Anesthesia & Surgical Screening (PASS Clinic) will complete the Duke Activity Status Index (DASI) self-reported questionnaire as standard of care. If the DASI score is 34 or greater, the patients will not be considered for the study. If the DASI score is 33 or lower, the patient will be considered as a potential study participant. Eligible study participants will then complete a sub-maximal exercise test (Six Minute Step Test, 6MST) with measured VO2. The VO2 is an integral part of preoperative assessment of cardiorespiratory fitness (CRF). A low CRF is associated with a higher incidence of post-operative complications and mortality. The study will evaluate the ability to estimate VO2 from exercise-derived measurement with questionnaire-derived estimation.
Interventions
BEHAVIORALExercise
Calculate oxygen consumption
Sponsors
Duke University
Study design
Allocation
NON_RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
DIAGNOSTIC
Masking
NONE
Intervention model description
All subjects will be asked to complete the exercise test and the fitness questionnaire
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No
Inclusion criteria
* Age 18 and older * Able to speak English * Ambulatory \[assistive devices ok\] * Preoperative Anesthesia and Surgical Screening (PASS) clinic patient with DASI score \<34 * Able to provide informed consent
Exclusion criteria
* Acute myocardial infarction (3-5 days) * Unstable angina * Severe untreated arterial hypertension at rest (\>200 mm Hg systolic, \>120 mm Hg diastolic) * Resting heart rate \> 120 bpm * Room air desaturation at rest on room air \<85% * Inmate of correctional facility (i.e. prisoner) * Diagnosed history of dementia * Inability to ambulate independently * Considered inappropriate to participate by Principal Investigator
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Total amount of oxygen consumed per minute | Up to 15 minutes | Oxygen consumption measured in mL/min |
Countries
United States
Contacts
CONTACTDavid MacLeod, FRCA
CONTACTAshley Burke, BS
PRINCIPAL_INVESTIGATORDavid MacLeod, FRCA
Duke University
Outcome results
None listed