- ICH GCP
- Registr klinických studií v USA
- Klinická studie NCT07824674
The Effect of Additive On-Demand Sildenafil vs. Dextrose Candy on Maximum Exercise Capacity in Pulmonary Arterial Hypertension (Pocket-PH)
The Effect of Additive On-Demand Sildenafil vs. Dextrose Candy on Maximum Exercise Capacity in Pulmonary Arterial Hypertension: A Randomized, Cross-Over Trial.
Přehled studie
Postavení
Intervence / Léčba
Detailní popis
This study is a prospective, randomized, cross-over trial evaluating the effects of additive 20 mg sildenafil versus placebo/sham dextrose candy on exercise capacity in patients with previously diagnosed pulmonary arterial hypertension (PAH).
PAH is a progressive and debilitating disease characterized by increased mean pulmonary arterial pressure (mPAP) and pulmonary vascular resistance (PVR), leading to right ventricular overload, and ultimately right heart failure. Despite advancements in pharmacological therapy, treatment options remain limited and optimizing individualized approaches to improve exercise capacity and manage symptom burden remains a challenge.
Phosphodiesterase type 5 inhibitors, such as sildenafil, are cornerstones of PAH treatment, enhancing pulmonary vasodilation and improving haemodynamics. While three times daily dosing is standard with three time 20-80mg daily. On-demand additive sildenafil use before exercise has not been studied, but as recent trials have shown that dosing up to three times 80mg is as safe as 20mg, there is a potential that additive therapy may be beneficial. Given sildenafil's rapid onset of action with peak effects after 30-120 minutes, it may offer acute functional benefits regarding maximum workload (Wmax) when administered shortly beforehand, in the terms of a "pill-in-the pocket" intake.
After providing informed consent, eligible participants (aged 18 - 80 years, with PAH diagnosed according to the ESC/ERS 2022/2019 guidelines) will be randomly assigned to receive either 20 mg sildenafil or dextrose candy (Dextro Energy). 45 minutes post-intake, they will undergo incremental spiroergometry (10-20 W increases) and right heart focused stress-echocardiography on a cycle ergometer until exhaustion. After a rest phase of 30 minutes, patients will perform CWRET at 75% of achieved Wmax until exhaustion. Then, after a washout period of minimum 24 hours up to 12 weeks, participants will cross over to the opposite treatment, repeating the same protocol.
In case of a beneficial result, our study could support the use of an additive pill-in-the-pocket therapy strategy which may allow treatment to be tailored to the individual activity demands of patients.
Typ studie
Zápis (Odhadovaný)
Fáze
- Fáze 2
- Fáze 3
Kontakty a umístění
Studijní kontakt
- Jméno: Arcangelo F Carta, MD
- Telefonní číslo: +41 44 255 22 20
- E-mail: arcangelo.carta@usz.ch
Studijní záloha kontaktů
- Jméno: Silvia Ulrich, Prof. MD
- Telefonní číslo: +41 44 255 22 21
- E-mail: silvia.ulrich@usz.ch
Studijní místa
-
-
Canton of Zurich
-
Zurich, Canton of Zurich, Švýcarsko, 8091
- Nábor
- University Hospital of Zurich, Department of Pulmonology
-
Kontakt:
- Arcangelo F Carta, Dr. med.
- Telefonní číslo: +41 44 255 22 20
- E-mail: arcangelo.carta@usz.ch
-
-
Kritéria účasti
Kritéria způsobilosti
Věk způsobilý ke studiu
- Dospělý
- Starší dospělý
Přijímá zdravé dobrovolníky
Popis
Inclusion Criteria:
- Signed Informed consent
- Age 18 - 80 years (both sexes)
- Pulmonary hypertension (PH) class I (PAH) previously diagnosed according to ESC/ERS 2022/2019 guidelines (mPAP ≥ 20 mmHg, PVR ≥ 2 WU, PAWP ≤ 15 mmHg) during diagnostic right-heart catheterization.
- Stable condition, on the same PH-medication for >4 weeks
Exclusion Criteria:
- Severe resting hypoxia (PaO2 <7.3 kPa)
- Moderate-to-severe chronic obstructive or restrictive pulmonary disease (FEV1 ≤ 60% predicted, FVC ≤ 60% predicted)
- Women with known pregnancy or breast feeding
- Other clinically significant concomitant disease states (e.g., severe renal or hepatic disease, unstable cardiovascular disease, etc.)
Concurrent medication with:
- Nitric oxide donors (molsidomine, nicrorandil, etc.)
- Soluble guanylate cyclase stimulators (riociguat)
- Potent CYP3A4 inhibitors (azoles, clarithromycin, protease inhibitors)
- History of anterior ischemic optic neuropathy or hereditary retinal disease
- Participation in another study with investigational drug with potential influence the study data within the 30 days preceding and during the present study.
- Known allergies or hypersensitivity to sildenafil 20mg (Revatio 20mg) or dextrose candy (Dextroenergy) including any of its components
Studijní plán
Jak je studie koncipována?
Detaily designu
- Primární účel: Léčba
- Přidělení: Randomizované
- Intervenční model: Crossover Assignment
- Maskování: Singl
Zbraně a zásahy
Skupina účastníků / Arm |
Intervence / Léčba |
|---|---|
|
Jiný: Intervention Order A
Group A will receive the active comparator first (Sildenafil 20mg) in accordance with the Cross-Over trial design.
|
Administration of Dextrose Candy by mouth as a tablet.
Ostatní jména:
Administration of Sildenafil 20mg by mouth as a tablet.
Ostatní jména:
|
|
Jiný: Intervention Order B
Group B will receive the placebo comparator first (Dextrose Candy) in accordance with the Cross-Over trial design.
|
Administration of Dextrose Candy by mouth as a tablet.
Ostatní jména:
Administration of Sildenafil 20mg by mouth as a tablet.
Ostatní jména:
|
Co je měření studie?
Primární výstupní opatření
Měření výsledku |
Popis opatření |
Časové okno |
|---|---|---|
|
Maximum workload (Wmax)
Časové okno: Within 1 - 90 days
|
The difference in maximum workload (Wmax) attained during maximum spiroergometry 45 minutes after treatment with Sildenafil 20mg (Revatio 20mg) versus dextrose candy (Dextro Energy).
|
Within 1 - 90 days
|
Sekundární výstupní opatření
Měření výsledku |
Popis opatření |
Časové okno |
|---|---|---|
|
Time to Exhaustion (Tmax)
Časové okno: Within 1 - 90 days
|
Difference in Time to Exhaustion (Tmax)attained during CWRET after treatment with Sildenafil 20mg (Revatio 20mg) versus dextrose candy (Dextro Energy)
|
Within 1 - 90 days
|
|
Cardiometabolic parameters (CPET, CWRET): Oxygen Saturation (SpO2)
Časové okno: Within 1 - 90 days
|
Change in Oxygen Saturation (SpO2) during CPET / CWRET
|
Within 1 - 90 days
|
|
Focused Stress-Echocardiography (Right Heart): Stroke Volume (SV)
Časové okno: Within 1 - 90 days
|
Change in Stroke Volume (SV) during CPET
|
Within 1 - 90 days
|
|
Arterial blood gases: Arterial Partial Pressure of Oxygen (PaO2)
Časové okno: Within 1 - 90 days
|
Change in Arterial Partial Pressure of Oxygen (PaO2) during CPET.
|
Within 1 - 90 days
|
|
Borg CR10 (Borg Category-Ratio 10 Scale)
Časové okno: Within 1 - 90 days
|
Changes in Borg CR10 questionnaire (Borg Category-Ratio 10 Scale) after CPET / CWRET (0-10, higher values indicate more severe symptoms)
|
Within 1 - 90 days
|
|
Focused Stress-Echocardiography (Right Heart): Tricuspid Regurgitation Pressure Gradient (TRPG)
Časové okno: Within 1 - 90 days
|
Change in Tricuspid Regurgitation Pressure Gradient (TRPG) during CPET
|
Within 1 - 90 days
|
|
Cardiometabolic parameters (CPET / CWRET): Blood Pressure (BP)
Časové okno: Within 1 - 90 days
|
Change in Blood Pressure (BP) during CPET / CWRET
|
Within 1 - 90 days
|
|
Cardiometabolic parameters (CPET / CWRET): Heart Rate (HR)
Časové okno: Within 1 - 90 days
|
Change in Heart Rate (HR) during CPET / CWRET
|
Within 1 - 90 days
|
|
Cardiometabolic parameters (CPET / CWRET): Rate Pressure Product (RPP)
Časové okno: Within 1 - 90 days
|
Change in Rate Pressure Product (RPP) during CPET / CWRET
|
Within 1 - 90 days
|
|
Cardiometabolic parameters (CPET / CWRET): Maximum Uptake of Oxygen (V'O2max)
Časové okno: Within 1 - 90 days
|
Change Maximum Uptake of Oxygen (V'O2max) during CPET / CWRET
|
Within 1 - 90 days
|
|
Cardiometabolic parameters (CPET / CWRET): Maximum Carbon Dioxide Production (V'CO2max)
Časové okno: Within 1 - 90 days
|
Change in Maximum Carbon Dioxide Production (V'CO2max) during CPET / CWRET
|
Within 1 - 90 days
|
|
Cardiometabolic parameters (CPET / CWRET): Maximum Minute Ventilation (V'Emax)
Časové okno: Within 1 - 90 days
|
Change in Maximum Minute Ventilation (V'Emax) during CPET / CWRET
|
Within 1 - 90 days
|
|
Cardiometabolic parameters (CPET / CWRET): Maximum Ventilatory Equivalent for Oxygen (V'E/VO2)
Časové okno: Within 1 - 90 days
|
Change in Maximum Ventilatory Equivalent for Oxygen (V'E/VO2) during CPET / CWRET
|
Within 1 - 90 days
|
|
Cardiometabolic parameters (CPET / CWRET): Maximum Ventilatory Equivalent for Carbon Dioxide (V'E/VCO2)
Časové okno: Within 1 - 90 days
|
Change in Maximum Ventilatory Equivalent for Carbon Dioxide (V'E/VCO2) during CPET / CWRET
|
Within 1 - 90 days
|
|
Cardiometabolic parameters (CPET / CWRET): Breathing Frequency (BF)
Časové okno: Within 1 - 90 days
|
Change in Breathing Frequency (BF) during CPET / CWRET
|
Within 1 - 90 days
|
|
Cardiometabolic parameters (CPET / CWRET): Breathing Reserve (BR)
Časové okno: Within 1 - 90 days
|
Change in Breathing Reserve (BR) during CPET / CWRET
|
Within 1 - 90 days
|
|
Arterial blood gases: Arterial Partial Pressure of Carbon Dioxide (PaCO2)
Časové okno: Within 1 - 90 days
|
Change in Arterial Partial Pressure of Carbon Dioxide (PaCO2) during CPET.
|
Within 1 - 90 days
|
|
Arterial blood gases: Bicarbonate (HCO3-)
Časové okno: Within 1 - 90 days
|
Change in Bicarbonate HCO3- before and after CPET.
|
Within 1 - 90 days
|
|
Arterial blood gases: Arterial Oxygen Saturation (SaO2)
Časové okno: Within 1 - 90 days
|
Change in Arterial Oxygen Saturation (SaO2) before and after CPET.
|
Within 1 - 90 days
|
|
Arterial blood gases: Base Excess (BE)
Časové okno: Within 1 - 90 days
|
Change in Base Excess (BE) before and after CPET.
|
Within 1 - 90 days
|
|
Arterial blood gases: Lactate (lac)
Časové okno: Within 1 - 90 days
|
Change in Lactate (lac) concentration before and after CPET.
|
Within 1 - 90 days
|
|
Arterial blood gases: Hemoglobin (Hb)
Časové okno: Within 1 - 90 days
|
Change in Hemoglobin (Hb) before and after CPET.
|
Within 1 - 90 days
|
|
Arterial blood gases: Hematocrit (Hct)
Časové okno: Within 1 - 90 days
|
Change in Hematocrit (Hct) before and after CPET.
|
Within 1 - 90 days
|
|
Focused Stress-Echocardiography (Right Heart): Tricuspid Regurgitation Velocity (TRV)
Časové okno: Within 1 - 90 days
|
Change in Tricuspid Regurgitation Velocity (TRV) during CPET
|
Within 1 - 90 days
|
|
Focused Stress-Echocardiography (Right Heart): Right Atrial Pressure (RAP)
Časové okno: Within 1 - 90 days
|
Change in Right Atrial Pressure (RAP) during CPET
|
Within 1 - 90 days
|
|
Focused Stress-Echocardiography (Right Heart): Systolic Pulmonary Arterial Pressure (sPAP)
Časové okno: Within 1 - 90 days
|
Change in Systolic Pulmonary Arterial Pressure (sPAP) during CPET
|
Within 1 - 90 days
|
|
Focused Stress-Echocardiography (Right Heart): Fractional Area Change (FAC)
Časové okno: Within 1 - 90 days
|
Change in Fractional Area Change (FAC) during CPET
|
Within 1 - 90 days
|
|
Focused Stress-Echocardiography (Right Heart): Tricuspid Annular Plane Systolic Excursion (TAPSE)
Časové okno: Within 1 - 90 days
|
Change in Tricuspid Annular Plane Systolic Excursion (TAPSE) during CPET
|
Within 1 - 90 days
|
|
Focused Stress-Echocardiography (Right Heart): Ratio of Tricuspid Regurgitation Pressure Gradient to Cardiac Output (TRPG/CO)
Časové okno: Within 1 - 90 days
|
Change in Ratio of Tricuspid Regurgitation Pressure Gradient to Cardiac Output (TRPG/CO) during CPET
|
Within 1 - 90 days
|
|
Focused Stress-Echocardiography (Right Heart): Cardiac Output (CO)
Časové okno: Within 1 - 90 days
|
Change in Cardiac Output (CO) during CPET
|
Within 1 - 90 days
|
|
Focused Stress-Echocardiography (Right Heart): Pulmonary Vascular Resistance (PVR)
Časové okno: Within 1 - 90 days
|
Change in Pulmonary Vascular Resistance (PVR) during CPET
|
Within 1 - 90 days
|
Další výstupní opatření
Měření výsledku |
Popis opatření |
Časové okno |
|---|---|---|
|
Safety Profile / (S)AEs
Časové okno: (S)AEs will be assessed immediately after each intervention (A or B) during the corresponding study visits (1 and 2).
|
Safety and (S)AEs of each Intervention [sildenafil 20mg (Revatio 20mg) and dextrose candy (Dextro Energy)] will be assessed.
|
(S)AEs will be assessed immediately after each intervention (A or B) during the corresponding study visits (1 and 2).
|
Spolupracovníci a vyšetřovatelé
Sponzor
Vyšetřovatelé
- Vrchní vyšetřovatel: Silvia Ulrich, Prof. Dr. med., University of Zurich
- Vrchní vyšetřovatel: Arcangelo F Carta, Dr. med., University of Zurich
Termíny studijních záznamů
Hlavní termíny studia
Začátek studia (Odhadovaný)
Primární dokončení (Odhadovaný)
Dokončení studie (Odhadovaný)
Termíny zápisu do studia
První předloženo
První předloženo, které splnilo kritéria kontroly kvality
První zveřejněno (Aktuální)
Aktualizace studijních záznamů
Poslední zveřejněná aktualizace (Aktuální)
Odeslaná poslední aktualizace, která splnila kritéria kontroly kvality
Naposledy ověřeno
Více informací
Termíny související s touto studií
Klíčová slova
Další relevantní podmínky MeSH
- Nemoci dýchacích cest
- Plicní onemocnění
- Hypertenze, plicní
- Plicní arteriální hypertenze
- Sloučeniny síry
- Organické chemikálie
- Heterocyklické sloučeniny, 1 kruh
- Heterocyklické sloučeniny
- Heterocyklické sloučeniny, 2-prsten
- Heterocyklické sloučeniny, fúzované kroužek
- Uhlohydráty
- Amidy
- Puriny
- Cukry
- Sulfonamidy
- Sulfony
- Piperaziny
- Hexózy
- Monosacharidy
- Sildenafil citrát
- Glukóza
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