Rehabilitation for Patients With Pulmonary Hypertension

Not Applicable

• Conditions: Pulmonary Hypertension
• Interventions: Other: Pulmonary rehabilitation

• Registration Number: NCT03955016
• Lead Sponsor: KU Leuven

Brief Summary

The purpose of this study is to test the impact of a personalized, partly supervised rehabilitation program on the exercise capacity in patients with pulmonary hypertension. The rehabilitation program consists of 2 weeks inpatient, 2 weeks ambulatory and 11 weeks home based rehabilitation.

Detailed Description

The present study is a 15 weeks, randomized (1:1) controlled trial. Patients in both groups will not change their usual medical treatment. After 2 clinical visits (screening and randomization visit), patients in the intervention group will follow a 15 week rehabilitation program consisting of 2 weeks inpatient, 2 weeks outpatient and 11 weeks home based rehabilitation. At the end of the outpatient rehabilitation phase (week 4) and the home-based program (week 15), clinical outcomes will be reassessed.

Study Timeline

• Study First Submitted: 2018-07-16
• Study Start: 2018-11-13
• Study First Submitted QC: 2019-05-16
• Study First Posted: 2019-05-17
• Status Verified: 2019-10
• Last Update Submitted: 2019-10-09
• Last Update Posted: 2019-10-10
• Primary Completion: 2020-11-01
• Study Completion: 2020-11-01

Recruitment & Eligibility

• Status: UNKNOWN
• Sex: All
• Target Recruitment: 20

Inclusion Criteria

• Female and male patients ≥ 18 years

• Pulmonary arterial hypertension (PAH, Group 1 of Nice classification) and chronic thromboembolic pulmonary hypertension (CTEPH, group 4)

• WHO functional class II-III

• PH diagnosed by right heart catheter showing:

  1. Baseline mean pulmonary arterial pressure (mPAP) ≥ 25 mmHg
  2. Baseline pulmonary vascular resistance (PVR) ≥ 240dyn x s x cm-5
  3. Baseline pulmonary capillary wedge pressure (PCWP) ≤ 15 mmHgg

• Patients receiving optimized conventional PH therapy including intensified treatment with diuretics and who have been stable for 2 months before entering the study.

• Except for diuretics, medical treatment should not be expected to change during the entire 15-week study period.

• Negative pregnancy test (β-HCG) at the start of the trial and appropriate contraception throughout the study for women with child- bearing potential

• Able to understand and willing to sign the Informed Consent Form

Exclusion Criteria

• PH of any cause other than permitted in the entry criteria, e.g. concomitantly to portal hypertension, complex congenital heart disease, reversed shunt, HIV infection, suspected pulmonary veno-occlusive disease based on pulmonary edema during a previous vasoreactivity test or on abnormal findings compatible with this diagnosis (septal lines or pulmonary edema at high resolution computer tomography), congenital or acquired valvular defects with clinically relevant myocardial function disorders not related to pulmonary hypertension or unclear diagnosis
• Patients with signs of right heart decompensation
• Walking disability
• Acute infection, pyrexia
• Any change in disease-targeted therapy within the last 2 months
• Any subject who is scheduled to receive an investigational drug during the course of this study
• Severe lung disease: FEV1/FVC <0.5 and total lung capacity <70% of the normal value
• Active myocarditis, instable angina pectoris, exercise induced ventricular arrhythmias, decompensated heart failure, active liver disease, porphyria or elevations of serum transaminases >3 x ULN (upper limit of normal) or bilirubin >1.5 x ULN
• Hemoglobin concentration of less than 75% of the lower limit of normal
• Systolic blood pressure <85 mmHg
• History or suspicion of inability to cooperate adequately

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Rehabilitation group	Pulmonary rehabilitation	15 weeks pulmonary rehabilitation program consisting of 2 weeks inpatient, 2 weeks outpatient and 11 weeks home-based rehabilitation.

Primary Outcome Measures

Name	Time	Method
Change in functional exercise capacity	Baseline, 4 weeks, 15 weeks	Change in six minutes-walk distance measured at baseline, after 4 weeks and at the end of the study (15 weeks after randomization).

Secondary Outcome Measures

Name	Time	Method
Change from baseline to 15 weeks between the rehabilitation and the control group in maximal exercise capacity	Baseline, 15 weeks	Maximal exercise capacity will be assessed by a maximal incremental cycling test. After a 2-min resting period and 3 minutes of unloaded cycling, the patients will start at 20 W and cycle until symptom limitation at an incremental workload of 10 W/min. Oxygen consumption, carbon dioxide output and ventilation will be measured breath by breath (Vmax series, SensorMedics, Anaheim, CA). Heart rate and oxygen saturation will be registered continuously. Peak workload, oxygen consumption (VO2 max), heart rate, blood pressure, oxygen saturation, ventilation and VE/VCO2 slope will be retrieved.
Difference in change over time between the rehabilitation and the control group in symptoms of anxiety and depression (HADs questionnaire)	Baseline, 4 weeks, 15 weeks	Symptoms of anxiety and depression will be assessed by the Depression, Anxiety, and Stress Scale. This questionnaires is self-administered and will be completed on paper. Higher scores indicate more symptoms of anxiety / depression.
Difference in change over time between the rehabilitation and the control group in Isometric quadriceps force	Baseline, 4 wekes, 15 weeks	An isometric maximal volitional contraction of the right quadriceps muscle be performed using the Biodex dynamometer with the patient seated with a 90° hip and 60° knee flexion. The best of 3 reproducible measurements will be retrieved as a measure of quadriceps force.
Difference in change over time between the rehabilitation and the control group in SF-36	Baseline, 4 weeks, 15 weeks	Health related quality of life (HRQoL) will be measured by the extensively validated generic HRQoL questionnaire, the 36-Item Short Form Survey Instrument (SF-36). This questionnaire includes two main scores with a physical component and an emotional component scale and eight subscales. The score ranges between 0 and 100, higher scores indicate a better quality of life. The questionnaire is self-administered and will be completed on paper
Difference in change over time between the rehabilitation and the control group in EmPHasis-10.	Baseline, 4 weeks, 15 weeks	Health related quality of life (HRQoL) will be measured the EmPHasis-10 questionnaire, measuring the impact of PH on health related quality of life. The score ranges between 0 and 50, higher scores indicate worse quality of life.
Change from baseline to 15 weeks between the rehabilitation and the control group in WHO functional class	Baseline, 15 weeks	The WHO functional classification ranges from class I (patients with PH but without resting limitation of physical activity) to class IV (patients with PH with inability to carry out any physical activity without symptoms). The WHO functional class is a powerful predictor of survival in patients with PH.
Difference in change over time between the rehabilitation and the control group in Borgscale at the end of the 6MWD test	Baseline, 4 weeks, 15 weeks	Borg (0-10) scale reporting on dyspnea and fatigue will be administered at the end of the six-minutes walk test. The score ranges between 0 and 10, a higher score means more symptoms of dyspnea / fatigue.
Difference in change over time between the rehabilitation and the control group in Objectively measured physical activity	Baseline, 4 weeks, 15 weeks	At every time point, physical activity will be measured for 1 week, using a physical activity monitor validated to be used in patients with respiratory disease. Patients will be asked to wear the monitor during waking hours. The mean number of steps per day and time spent in activities of at least moderate intensity will be retrieved as outcomes.
Change from baseline to 15 weeks between the rehabilitation and the control group in hemodynamics measured by echocardiography	Baseline, 15 weeks	Hemodynamics measured by echocardiography at rest and during a symptom limiting exercise test. The following outcomes will be investigated: Change in tricuspid annular plane systolic excursion, Change in tissue Doppler imaging, Change in left ventricular pump function, Change in right ventricular pump function , Change in thickness of interventricular septum, Change insize of inferior vena cava, Change in systolic pulmonary arterial pressure, Change in left ventricular eccentricity index, Change in Tei index , Change in right ventricular area, Change in right atrial area
Change from baseline to 15 weeks between the rehabilitation and the control group in proportion of patients who exceeded the MID in 6MWD	Baseline, 15 weeks	MID will be defined as an increase of at least 30m
Change from baseline to 15 weeks between the rehabilitation and the control group in heart function as measured by MRI (optional)	Baseline, 15 weeks	MRI scan at rest and during exercise combined with right heart catherization and blood sampling before and after the exercise protocol.
adverse events	15 weeks	Patients will be asked about visits to general practitioner and hospitalizations due to any medical reasons in order to control the occurrence of adverse events. In a semi-structured way,, occurrence of exercise related and non-exercise related adverse events will be collected.

Trial Locations

Locations (1)

University Hospitals Leuven; 🇧🇪 Leuven, Belgium