Chronic Heart Failure
Conditions
Keywords
chronic heart failure, exercise capacity, symptom-limited stair-climbing test
Brief summary
Aims: To assess the efficacy of symptom-limited stair-climbing test (SLSCT), in determining the exercise capacities of patients with chronic heart failure (CHF) in comparison with cardiopulmonary exercise test (CPET) and 6-minute walk test(6MWT) and to interpret the results according to the clinical status of the patients. Methods: Thirty-one patients, aged 50-75 years, with stage II-III CHF according to the New York Heart Association Classification and left ventricular ejection fraction (LVEF) of ≤45% were included. The demographic and clinical characteristics of the patients were recorded. Exercise capacity was assessed by SLSCT, 6MWT, and CPET. The duration of patients' performance in the test, reasons for ending the test and predicted maximal oxygen consumption (VO2max) were recorded. Heart rate (HR), blood pressure (BP), dyspnoea severity \[Modified Borg Scale (MBS)\] and peripheral oxygen saturation were recorded. Pulmonary functions were assessed by spirometry.
Interventions
OTHERExercise Test
Tests were conducted to evaluate exercise capacity.
Sponsors
KTO Karatay University
Study design
Observational model
OTHER
Time perspective
PROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
50 Years to 75 Years
Healthy volunteers
Yes
Inclusion criteria
* 50-75 years of age * NYHA stage II-III * LVEF of 45% or less * Independently walking and climbing stairs * Volunteer to participate in research
Exclusion criteria
* Any acute or chronic condition that would limit exercise capacity other than CHF * Insufficient mental status to perform tests and surveys * Orthopaedic problem limiting exercise test in lower extremity * Severe obesity or there is a secondary cause for obesity * Uncontrolled cardiac arrhythmia * Unstable angina
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Symptom-Limited Stair-Climbing Test(SLSCT) | baseline | predicted VO2 max (ml/kg/min) |
| Six-Minute Walk Test(6MWT) | baseline | predicted VO2 max (ml/kg/min) |
| Cardiopulmonary Exercise Test(CPET) | baseline | predicted VO2 max (ml/kg/min) |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Blood Pressure | immediately after the procedure | Systolic and diastolic blood pressure (mmHg) |
| Heart Rate | immediately after the procedure | Heart Rate beats/min |
| Left Ventricular Ejection Fraction | baseline | Ecocardiography |
Other
| Measure | Time frame | Description |
|---|---|---|
| FEV1 % | baseline | Forced Expiratory Volume in One Second % |
| FVC % | baseline | Forced Vital Capacity % |
| FEF 25-75 % | baseline | Forced Expiratory Flow % |
| PEF % | baseline | Peak Expiratory Flow % |
| FEV1 l/sec | bseline | Forced Vital Capacity l/sec |
| FEV1/FVC | bseline | FEV1/FVC % |
| FVC l/sec | baseline | Forced Vital Capacity l/sec |
| FEF 25-75 l/sec | baseline | Forced Expiratory Flow 25-75 l/sec |
| PEF l/sec | baseline | Peak Expiratory Flow l/sec |
Outcome results
None listed