- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04946162
The Use of Tadalafil in Confirmed COVID-19 Pneumonia.
Our goal is to assess the effects of Tadalafil in the setting of confirmed COVID-19 pneumonia. In particular we plan to assess its effects on oxygen saturation, P:F ratio, and mixed central venous oxygen
We plan to recruit all hospitalized patients at Santa Barbara Cottage Hospital with a confirmed COVID19 pneumonia (positive PCR + clinical signs/symptoms of lower respiratory disease) who meet the Berlin definition of ARDS and have access to measure a mixed venous oxygen saturation. For the purposes of obtaining mixed central venous oxygen, all participating patients will already have an internal jugular central venous catheter in place for inclusion in this study. Since all patients will be intubated, their Legally Authorized Representative (LAR) will be approached to discuss the study and asked to participate in the study by an ICU physician, either the attending physician or a medical resident.
Informed consent will be obtained from the LAR by an ICU attending physician or resident involved in the study prior to participation. Patients who meet the above eligibility criteria will have baseline levels of mixed central venous oxygen, oxygen saturation, P:F ratio, blood pressure and PaO2 recorded.
Each patient will then receive Tadalafil 40mg once. The above listed parameters will be monitored again 30 minutes after drug administration and 4 hours after drug administration. No other medication or ventilator changes will be made during this time period outside of emergent changes in the setting of patient deterioration. We will continue to analyze the data in the event of emergent ventilator changes.
Study Overview
Status
Conditions
Intervention / Treatment
Study Type
Phase
- Phase 4
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Hospitalized patients at SBCH with confirmed COVID19 pneumonia (PCR + clinical signs/symptoms of lower respiratory disease)
- Patients currently on a ventilator
- Patients who meet the Berlin definition of ARDS
- Patients who have access to measure a mixed venous oxygen saturation (i.e., patients with an internal jugular central venous catheter)
- Patient and/or Legally Authorized Representative is willing/able to provide informed consent
Exclusion Criteria:
- As tadalafil is currently a FDA Class B1 medication, indicating that little information is available, pregnant women along with women who are actively breastfeeding will be excluded from this series.
- All patients under 18
- Patients who are routinely taking nitrate medications
- All patients using Tadalafil daily for pulmonary arterial hypertension (Note: patients using Tadalafil intermittently for erectile dysfunction may still participate in the study)
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: N/A
- Interventional Model: Single Group Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
|---|---|
|
Experimental: Tadalafil Group
Each patient will be given tadalafil 40 mg one time
|
Each patient will be given tadalafil 40 mg one time
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
|---|---|---|
|
Improvement in P:F ratio
Time Frame: Pre-medication, 30 minutes post medication, 4 hours post-medication
|
Change in a patient's P:F ratio after medication administration
|
Pre-medication, 30 minutes post medication, 4 hours post-medication
|
|
Improvement in oxygen saturation
Time Frame: Pre-medication, 30 minutes post medication, 4 hours post-medication
|
Change in oxyhemoglobin as noted on an arterial blood gas sample after medication administration
|
Pre-medication, 30 minutes post medication, 4 hours post-medication
|
|
Improvement in partial pressure of oxygen in the bloodstream
Time Frame: Pre-medication, 30 minutes post medication, 4 hours post-medication
|
Change in oxygen partial pressure (aka PaO2) as noted on an arterial blood gas sample after medication administration
|
Pre-medication, 30 minutes post medication, 4 hours post-medication
|
Collaborators and Investigators
Sponsor
Publications and helpful links
General Publications
- Keyaerts E, Vijgen L, Chen L, Maes P, Hedenstierna G, Van Ranst M. Inhibition of SARS-coronavirus infection in vitro by S-nitroso-N-acetylpenicillamine, a nitric oxide donor compound. Int J Infect Dis. 2004 Jul;8(4):223-6. doi: 10.1016/j.ijid.2004.04.012.
- Akerstrom S, Mousavi-Jazi M, Klingstrom J, Leijon M, Lundkvist A, Mirazimi A. Nitric oxide inhibits the replication cycle of severe acute respiratory syndrome coronavirus. J Virol. 2005 Feb;79(3):1966-9. doi: 10.1128/JVI.79.3.1966-1969.2005.
- Klok FA, Kruip MJHA, van der Meer NJM, Arbous MS, Gommers D, Kant KM, Kaptein FHJ, van Paassen J, Stals MAM, Huisman MV, Endeman H. Confirmation of the high cumulative incidence of thrombotic complications in critically ill ICU patients with COVID-19: An updated analysis. Thromb Res. 2020 Jul;191:148-150. doi: 10.1016/j.thromres.2020.04.041. Epub 2020 Apr 30.
- Magro C, Mulvey JJ, Berlin D, Nuovo G, Salvatore S, Harp J, Baxter-Stoltzfus A, Laurence J. Complement associated microvascular injury and thrombosis in the pathogenesis of severe COVID-19 infection: A report of five cases. Transl Res. 2020 Jun;220:1-13. doi: 10.1016/j.trsl.2020.04.007. Epub 2020 Apr 15.
- Galie N, Brundage BH, Ghofrani HA, Oudiz RJ, Simonneau G, Safdar Z, Shapiro S, White RJ, Chan M, Beardsworth A, Frumkin L, Barst RJ; Pulmonary Arterial Hypertension and Response to Tadalafil (PHIRST) Study Group. Tadalafil therapy for pulmonary arterial hypertension. Circulation. 2009 Jun 9;119(22):2894-903. doi: 10.1161/CIRCULATIONAHA.108.839274. Epub 2009 May 26. Erratum In: Circulation. 2011 Sep 6;124(10):e279. Dosage error in article text.
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
- Infections
- Respiratory Tract Infections
- Respiratory Tract Diseases
- Respiration Disorders
- Lung Diseases
- Pneumonia
- Respiratory Distress Syndrome
- Molecular Mechanisms of Pharmacological Action
- Vasodilator Agents
- Urological Agents
- Enzyme Inhibitors
- Phosphodiesterase Inhibitors
- Phosphodiesterase 5 Inhibitors
- Tadalafil
Other Study ID Numbers
- 20-63mrx
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
product manufactured in and exported from the U.S.
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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